diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 0000000..010ec9d
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,14 @@
+[profile.release]
+opt-level = 'z'
+lto = true
+codegen-units = 1
+
+[unstable]
+build-std = ["core", "alloc"]
+build-std-features = ["compiler-builtins-mem"]
+
+# By default, heap size is enforced to 8192 bytes.
+# Authorized values are [2048, 4096, 8192, 16384, 24576]
+# We use 16k as we get some crashes on 8k when running the tests with big 20+ input TXs
+[env]
+HEAP_SIZE = "16384"
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..dfe0770
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+# Auto detect text files and perform LF normalization
+* text=auto
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..5462dbb
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,14 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+
+version: 2
+updates:
+  - package-ecosystem: "cargo" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "daily"
+    allow:
+      - dependency-name: "ledger_device_sdk"
+      - dependency-name: "include_gif"
diff --git a/.github/workflows/build_and_functional_tests.yml b/.github/workflows/build_and_functional_tests.yml
new file mode 100644
index 0000000..3e87c18
--- /dev/null
+++ b/.github/workflows/build_and_functional_tests.yml
@@ -0,0 +1,49 @@
+name: Build and run functional tests using ragger through reusable workflow
+
+# This workflow will build the app and then run functional tests using the Ragger framework upon Speculos emulation.
+# It calls a reusable workflow developed by Ledger's internal developer team to build the application and upload the
+# resulting binaries.
+# It then calls another reusable workflow to run the Ragger tests on the compiled application binary.
+#
+# The build part of this workflow is mandatory, this ensures that the app will be deployable in the Ledger App Store.
+# While the test part of this workflow is optional, having functional testing on your application is mandatory and this workflow and
+# tooling environment is meant to be easy to use and adapt after forking your application
+
+permissions:
+  actions: write
+  contents: write
+  pull-requests: write
+
+on:
+  workflow_dispatch:
+    inputs:
+      golden_run:
+        type: choice
+        required: true
+        default: 'Raise an error (default)'
+        description: CI behavior if the test snaphots are different than expected.
+        options:
+          - 'Raise an error (default)'
+          - 'Open a PR'
+  push:
+    branches:
+      - master
+      - main
+      - develop
+  pull_request:
+
+jobs:
+  build_application:
+    name: Build application using the reusable workflow
+    uses: LedgerHQ/ledger-app-workflows/.github/workflows/reusable_build.yml@v1
+    with:
+      upload_app_binaries_artifact: "compiled_app_binaries"
+      builder: ledger-app-builder
+
+  ragger_tests:
+    name: Run ragger tests using the reusable workflow
+    needs: build_application
+    uses: LedgerHQ/ledger-app-workflows/.github/workflows/reusable_ragger_tests.yml@v1
+    with:
+      download_app_binaries_artifact: "compiled_app_binaries"
+      regenerate_snapshots: ${{ inputs.golden_run == 'Open a PR' }}
diff --git a/.github/workflows/coding_style_checks.yml b/.github/workflows/coding_style_checks.yml
new file mode 100644
index 0000000..7f91930
--- /dev/null
+++ b/.github/workflows/coding_style_checks.yml
@@ -0,0 +1,21 @@
+name: Run coding style check
+
+# This workflow will run linting checks to ensure a level of code quality among all Ledger applications.
+#
+# The presence of this workflow is mandatory as a minimal level of linting is required.
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - master
+      - main
+      - develop
+  pull_request:
+  
+jobs:
+  check_linting:
+    name: Check linting using the reusable workflow
+    uses: LedgerHQ/ledger-app-workflows/.github/workflows/reusable_lint.yml@v1
+    with:
+      source: './src'
diff --git a/.github/workflows/extra_checks.yml b/.github/workflows/extra_checks.yml
new file mode 100644
index 0000000..b90d19f
--- /dev/null
+++ b/.github/workflows/extra_checks.yml
@@ -0,0 +1,28 @@
+name: Run extra checks
+
+# This workflow will run `run_extra_checks.sh` from the project root.
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - master
+      - main
+      - develop
+  pull_request:
+
+jobs:
+  run_extra_checks:
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v5
+    
+      # Note: no need to install docker manually, because it's already installed, see
+      # https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2404-Readme.md
+
+      - name: Run the checks
+        run: |
+          docker run --rm -v "$(realpath .):/app" -w /app \
+            ghcr.io/ledgerhq/ledger-app-builder/ledger-app-dev-tools:latest \
+            bash run_extra_checks.sh
diff --git a/.github/workflows/guidelines_enforcer.yml b/.github/workflows/guidelines_enforcer.yml
new file mode 100644
index 0000000..b217d84
--- /dev/null
+++ b/.github/workflows/guidelines_enforcer.yml
@@ -0,0 +1,27 @@
+name: Ensure compliance with Ledger guidelines
+
+# This workflow is mandatory in all applications
+# It calls a reusable workflow guidelines_enforcer developed by Ledger's internal developer team.
+# The successful completion of the reusable workflow is a mandatory step for an app to be available on the Ledger
+# application store.
+#
+# More information on the guidelines can be found in the repository:
+# LedgerHQ/ledger-app-workflows/
+
+permissions:
+  actions: write
+  contents: read
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - master
+      - main
+      - develop
+  pull_request:
+
+jobs:
+  guidelines_enforcer:
+    name: Call Ledger guidelines_enforcer
+    uses: LedgerHQ/ledger-app-workflows/.github/workflows/reusable_guidelines_enforcer.yml@v1
diff --git a/.github/workflows/misspellings_checks.yml b/.github/workflows/misspellings_checks.yml
new file mode 100644
index 0000000..845be36
--- /dev/null
+++ b/.github/workflows/misspellings_checks.yml
@@ -0,0 +1,19 @@
+name: Misspellings checks
+
+# This workflow performs some misspelling checks on the repository
+# It is there to help us maintain a level of quality in our codebase and does not have to be kept on forked
+# applications.
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - master
+      - main
+      - develop
+  pull_request:
+
+jobs:
+  misspell:
+    name: Check misspellings
+    uses: LedgerHQ/ledger-app-workflows/.github/workflows/reusable_spell_check.yml@v1
diff --git a/.github/workflows/python_tests_checks.yml b/.github/workflows/python_tests_checks.yml
new file mode 100644
index 0000000..f035629
--- /dev/null
+++ b/.github/workflows/python_tests_checks.yml
@@ -0,0 +1,44 @@
+name: Checks on the Python tests
+
+# This workflow performs some checks on the Python client used by the Boilerplate tests
+# It is there to help us maintain a level of quality in our codebase and does not have to be kept on forked
+# applications.
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - master
+      - main
+      - develop
+  pull_request:
+
+jobs:
+
+  lint:
+    name: Boilerplate client linting
+    runs-on: ubuntu-latest
+    steps:
+    - name: Clone
+      uses: actions/checkout@v3
+    - name: Installing PIP dependencies
+      run: |
+        pip install pylint
+        pip install --extra-index-url https://test.pypi.org/simple/ -r tests/requirements.txt
+    - name: Lint Python code
+      run: |
+        pylint --rc tests/setup.cfg tests/application_client/
+
+  mypy:
+    name: Type checking
+    runs-on: ubuntu-latest
+    steps:
+    - name: Clone
+      uses: actions/checkout@v3
+    - name: Installing PIP dependencies
+      run: |
+        pip install mypy
+        pip install --extra-index-url https://test.pypi.org/simple/ -r tests/requirements.txt
+    - name: Mypy type checking
+      run: |
+        mypy tests/application_client/
diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
new file mode 100644
index 0000000..fb70e1e
--- /dev/null
+++ b/.github/workflows/unit_tests.yml
@@ -0,0 +1,31 @@
+name: Run unit tests
+
+# This workflow will run `run_unit_tests.sh` from the project root for each device model.
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - master
+      - main
+      - develop
+  pull_request:
+
+jobs:
+  run_extra_checks:
+    runs-on: ubuntu-24.04
+    strategy:
+      matrix:
+        model: [nanox, nanosp, stax, flex, apex_p]
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v5
+
+      # Note: no need to install docker manually, because it's already installed, see
+      # https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2404-Readme.md
+
+      - name: Run the checks
+        run: |
+          docker run --rm -v "$(realpath .):/app" -w /app \
+            ghcr.io/ledgerhq/ledger-app-builder/ledger-app-dev-tools:latest \
+            bash run_unit_tests.sh ${{ matrix.model }}
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..246e261
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,29 @@
+target
+app.json
+app_nanos.json
+app_nanosplus.json
+app_nanox.json
+app_stax.json
+app_flex.json
+
+# Temporary directory with snapshots taken during test runs
+tests/snapshots-tmp/
+
+.DS_Store
+
+# Python
+*.pyc[cod]
+*.egg
+__pycache__/
+*.egg-info/
+.eggs/
+.python-version
+
+# Related to the Ledger VSCode extension
+# Virtual env for sideload (macOS and Windows)
+ledger/
+# Build directory
+build/
+
+# VSCode
+.vscode/
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..4f1a245
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,1647 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
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+
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+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "86b8d5f90ddd19cb4a147a5fa63ca848db3df085e25fee3cc10b39b6eebae764"
+
+[[package]]
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+checksum = "c7651a1f62a11b8cbd5e0d42526e55f2c99886c77e007179efff86c2b137e66c"
+
+[[package]]
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+checksum = "c1dc67659d35f387f5f6c479dc4e28f1d4bb90ddd1a5d3da2e5d97b42d6272c3"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.53.0"
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+checksum = "9ce6ccbdedbf6d6354471319e781c0dfef054c81fbc7cf83f338a4296c0cae11"
+
+[[package]]
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+checksum = "581fee95406bb13382d2f65cd4a908ca7b1e4c2f1917f143ba16efe98a589b5d"
+
+[[package]]
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+checksum = "2e55b5ac9ea33f2fc1716d1742db15574fd6fc8dadc51caab1c16a3d3b4190ba"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.53.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0a6e035dd0599267ce1ee132e51c27dd29437f63325753051e71dd9e42406c57"
+
+[[package]]
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+checksum = "271414315aff87387382ec3d271b52d7ae78726f5d44ac98b4f4030c91880486"
+
+[[package]]
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+checksum = "f3edebf492c8125044983378ecb5766203ad3b4c2f7a922bd7dd207f6d443e95"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "wit-bindgen"
+version = "0.57.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ebf944e87a7c253233ad6766e082e3cd714b5d03812acc24c318f549614536e"
+
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+checksum = "bce33a6288fa3f072a8c2c7d0f2fdbb90e28298f0135c1f99b96c3db2efcc60b"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.49"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8fd425244944f4ab65ccff928e7323354c5a018c75838362fdce749dfad2ee1e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.104",
+]
+
+[[package]]
+name = "zeroize"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
+[[package]]
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+
+[[package]]
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+version = "0.4.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f423a2c17029964870cfaabb1f13dfab7d092a62a29a89264f4d36990ca414a"
+
+[[package]]
+name = "zune-inflate"
+version = "0.2.54"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73ab332fe2f6680068f3582b16a24f90ad7096d5d39b974d1c0aff0125116f02"
+dependencies = [
+ "simd-adler32",
+]
+
+[[package]]
+name = "zune-jpeg"
+version = "0.4.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "29ce2c8a9384ad323cf564b67da86e21d3cfdff87908bc1223ed5c99bc792713"
+dependencies = [
+ "zune-core",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..6343154
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,83 @@
+[package]
+name = "mintlayer-app"
+version.workspace = true
+edition = "2021"
+
+[workspace]
+members = ["crates/app-core", "crates/messages"]
+resolver = "2"
+
+[workspace.package]
+version = "0.1.0"
+
+[workspace.dependencies]
+bech32 = { version = "0.11", default-features = false }
+chrono = { version = "0.4", default-features = false }
+derive_more = { version = "2.1.1", default-features = false }
+hex = { version = "0.4.3", default-features = false }
+image = "0.25.8"
+ledger_device_sdk = "1.35.1"
+ledger_secure_sdk_sys = "1.16.1"
+num_enum = { version = "0.7.5", default-features = false }
+# Note: the testmacro crate is published by Ledger and its source code comes from the `testmacro`
+# dir inside the sdk repo, i.e. https://github.com/LedgerHQ/ledger-device-rust-sdk/tree/cad196841dbd72c037cfa01bec81a4a3ae57a04e/testmacro
+# (though the published version is a bit older).
+testmacro = "0.1.0"
+
+mintlayer-app-core = { path = "crates/app-core" }
+mintlayer-messages = { path = "crates/messages" }
+
+[workspace.dependencies.parity-scale-codec]
+git = "https://github.com/paritytech/parity-scale-codec.git"
+# Use the specific commit "5021525697edc0661591ebc71392c48d950a10b0",
+# which includes a fix for NanoX devices that do not support certain
+# atomic operations.
+#
+# Fix reference: https://github.com/paritytech/parity-scale-codec/pull/751
+# This fix should be included in releases after version 3.7.5.
+rev = "5021525697edc0661591ebc71392c48d950a10b0"
+default-features = false
+
+[workspace.dependencies.mintlayer-core-primitives]
+git = "https://github.com/mintlayer/mintlayer-core-primitives"
+# The commit "Merge pull request #4 from mintlayer/fix_typo".
+rev = "8644bfe06d932d687075939d2d175183ba1c369d"
+package = "mintlayer-core-primitives"
+
+[dependencies]
+ledger_device_sdk.workspace = true
+
+mintlayer-app-core.workspace = true
+
+[build-dependencies]
+image.workspace = true
+
+[[bin]]
+# Note: we only have this section to disable tests, but Cargo inists that "name" should also
+# be specified.
+name = "mintlayer-app"
+# The app bin crate is a thin wrapper around `mintlayer-app-core` and it's not supposed to have
+# unit tests of its own. So we disable tests completely to prevent Cargo from producing an uncompilable
+# test binary.
+test = false
+
+[package.metadata.ledger]
+curve = ["secp256k1"]
+flags = "0"
+path = ["44'/19788'", "44'/1'"]
+name = "Mintlayer"
+
+[package.metadata.ledger.nanox]
+icon = "icons/mintlayer_14x14.gif"
+
+[package.metadata.ledger.nanosplus]
+icon = "icons/mintlayer_14x14.gif"
+
+[package.metadata.ledger.stax]
+icon = "icons/mintlayer_32x32.gif"
+
+[package.metadata.ledger.flex]
+icon = "icons/mintlayer_40x40.gif"
+
+[package.metadata.ledger.apex_p]
+icon = "icons/mintlayer_32x32.png"
diff --git a/LICENSE b/LICENSE
deleted file mode 100644
index 65bdee8..0000000
--- a/LICENSE
+++ /dev/null
@@ -1,21 +0,0 @@
-MIT License
-
-Copyright (c) 2025 Mintlayer
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
diff --git a/LICENSE.md b/LICENSE.md
new file mode 100644
index 0000000..8dada3e
--- /dev/null
+++ b/LICENSE.md
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
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+      "You" (or "Your") shall mean an individual or Legal Entity
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+   6. Trademarks. This License does not grant permission to use the trade
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+   Unless required by applicable law or agreed to in writing, software
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+   See the License for the specific language governing permissions and
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diff --git a/README.md b/README.md
new file mode 100644
index 0000000..326d124
--- /dev/null
+++ b/README.md
@@ -0,0 +1,149 @@
+# Ledger Rust Mintlayer Application
+
+![Rule enforcer](https://github.com/mintlayer/mintlayer-ledger-app/actions/workflows/guidelines_enforcer.yml/badge.svg) ![Build and tests](https://github.com/mintlayer/mintlayer-ledger-app/actions/workflows/build_and_functional_tests.yml/badge.svg)
+
+This is the Mintlayer Ledger application for the Ledger Nano X, S+, Stax, Flex and Nano Gen 5 devices.
+
+:warning: Nano S is not supported
+
+## Quick start guide
+
+### With VS Code
+
+You can quickly setup a development environment on any platform (macOS, Linux or Windows) to build and test your application with [Ledger's VS Code extension](https://marketplace.visualstudio.com/items?itemName=LedgerHQ.ledger-dev-tools).
+
+By using Ledger's own developer tools [Docker image](https://github.com/LedgerHQ/ledger-app-builder/pkgs/container/ledger-app-builder%2Fledger-app-dev-tools), the extension allows you to **build** your apps with the latest SDK, **test** them on **Speculos** and **load** them on any supported device.
+
+- Install and run [Docker](https://www.docker.com/products/docker-desktop/).
+- Make sure you have an X11 server running :
+  - On Ubuntu Linux, it should be running by default.
+  - On macOS, install and launch [XQuartz](https://www.xquartz.org/) (make sure to go to XQuartz > Preferences > Security and check "Allow client connections").
+  - On Windows, install and launch [VcXsrv](https://sourceforge.net/projects/vcxsrv/) (make sure to configure it to disable access control).
+- Install [VScode](https://code.visualstudio.com/download) and add [Ledger's extension](https://marketplace.visualstudio.com/items?itemName=LedgerHQ.ledger-dev-tools).
+- Open a terminal and clone `app-boilerplate-rust` with `git clone git@github.com:LedgerHQ/app-boilerplate-rust.git`.
+- Open the `app-boilerplate-rust` folder with VSCode.
+- Use Ledger extension's sidebar menu or open the tasks menu with `ctrl + shift + b` (`command + shift + b` on a Mac) to conveniently execute actions :
+  - **Build** the app for the device model of your choice with `Build`.
+  - **Test** your binary on the [Speculos emulator](https://github.com/LedgerHQ/speculos) with `Run with emulator`.
+  - You can also **run functional tests**, load the app on a physical device, and more.
+
+ℹ️ The terminal tab of VSCode will show you what commands the extension runs behind the scene.
+
+## With a terminal
+
+### Prerequisites
+
+If you do not wish to use the [VS Code extension](#with-vs-code), you can follow the following steps to setup a development environment on Linux, Windows or MacOS.
+
+- The [ledger-app-dev-tools](https://github.com/LedgerHQ/ledger-app-builder/pkgs/container/ledger-app-builder%2Fledger-app-dev-tools) Docker image contains all the required tools and libraries to build, test and load an application on a device. You can download it from the ghcr.io docker repository:
+
+```shell
+sudo docker pull ghcr.io/ledgerhq/ledger-app-builder/ledger-app-dev-tools:latest
+```
+
+- Make sure you have an X11 server running :
+  - On Ubuntu Linux, it should be running by default.
+  - On macOS, install and launch [XQuartz](https://www.xquartz.org/) (make sure to go to XQuartz > Preferences > Security and check "Allow client connections").
+  - On Windows, install and launch [VcXsrv](https://sourceforge.net/projects/vcxsrv/) (make sure to configure it to disable access control).
+- You can then enter into this development environment by executing the following command from the directory of the application (`git` repository):
+  - Linux (Ubuntu):
+  ```shell
+  sudo docker run --rm -ti --privileged -v "/dev/bus/usb:/dev/bus/usb" -v "$(realpath .):/app" --publish 5001:5001 --publish 9999:9999 -e DISPLAY=$DISPLAY -v '/tmp/.X11-unix:/tmp/.X11-unix' ghcr.io/ledgerhq/ledger-app-builder/ledger-app-dev-tools:latest
+  ```
+  - macOS:
+  ```shell
+  sudo docker run  --rm -ti --privileged -v "$(pwd -P):/app" --publish 5001:5001 --publish 9999:9999 -e DISPLAY='host.docker.internal:0' -v '/tmp/.X11-unix:/tmp/.X11-unix' ghcr.io/ledgerhq/ledger-app-builder/ledger-app-dev-tools:latest
+  ```
+  - Windows (with PowerShell):
+  ```shell
+  docker run --rm -ti --privileged -v "$(Get-Location):/app" -e DISPLAY='host.docker.internal:0' --publish 5001:5001 --publish 9999:9999 ghcr.io/ledgerhq/ledger-app-builder/ledger-app-dev-tools:latest
+  ```
+
+The application's code will be available from inside the docker container, you can proceed to the following compilation steps to build your app.
+
+### Building
+
+You can build the Mintlayer app with the following command executed in the root directory of the app.
+
+```bash
+cargo ledger build nanox
+```
+
+This command will build the app for the Nano X, but you can use any supported device (`nanox`, `nanosplus`, `stax`, `flex`)
+
+### Testing
+
+#### Ragger functional tests
+
+This Mintlayer app comes with functional tests implemented with Ledger's [Ragger](https://github.com/LedgerHQ/ragger) test framework.
+
+- Install the tests requirements
+
+```bash
+pip install -r tests/requirements.txt
+```
+
+- Run the functional tests :
+
+```shell
+pytest tests/ --tb=short -v --device {nanosp | nanox | stax | flex}
+```
+
+#### Emulator
+
+You can also run the app directly on the [Speculos emulator](https://github.com/LedgerHQ/speculos) from the Docker container
+
+#### Nano S+ or X
+
+```bash
+speculos --apdu-port 9999 --api-port 5000 --display headless --model nanosp target/nanosplus/release/mintlayer-app
+```
+
+:warning: UI is displayed on `localhost:5000`
+
+#### Stax or Flex
+
+```bash
+speculos --apdu-port 9999 --api-port 5000 --model stax target/stax/release/mintlayer-app
+```
+
+You can also specify the seed phrase with -s "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about"
+
+:warning: UI is displayed by your X server
+
+You can then send APDU using `ledgercomm` (`pip install ledgercomm`):
+
+```
+ledgercomm-send file test.apdu
+```
+
+### Loading on device
+
+:warning: Loading the built application on a device shall be performed out of the Docker container, by using [ledgerctl](https://github.com/LedgerHQ/ledgerctl):
+
+```shell
+pip3 install ledgerwallet
+```
+
+ℹ️ Your device must be connected, unlocked and the screen showing the dashboard (not inside an application).
+
+For instance, for Flex:
+
+```bash
+ledgerctl install -f target/flex/release/app_flex.json
+```
+
+## Continuous Integration
+
+The following workflows are executed in [GitHub Actions](https://github.com/features/actions) :
+
+- Ledger guidelines enforcer which verifies that an app is compliant with Ledger guidelines. The successful completion of this reusable workflow is a mandatory step for an app to be available on the Ledger application store. More information on the guidelines can be found in the repository [ledger-app-workflow](https://github.com/LedgerHQ/ledger-app-workflows)
+- Compilation of the application for all supported devices in the [ledger-app-builder](https://github.com/LedgerHQ/ledger-app-builder) docker image
+- End-to-end tests with the [Speculos](https://github.com/LedgerHQ/speculos) emulator and [ragger](https://github.com/LedgerHQ/ragger) (see [tests/](tests/))
+- Various lint checks :
+  - Source code lint checks with `cargo fmt`
+  - Python functional test code lint checks with `pylint` and `mypy`
+
+## Additional documentation
+
+For development guidelines related to the app's memory usage see [docs/memory_usage.md](docs/memory_usage.md).
diff --git a/build.rs b/build.rs
new file mode 100644
index 0000000..25e883c
--- /dev/null
+++ b/build.rs
@@ -0,0 +1,49 @@
+use std::process::Command;
+
+use image::{ImageFormat, ImageReader, Pixel};
+
+fn main() {
+    println!("cargo:rerun-if-changed=script.ld");
+    println!("cargo:rerun-if-changed=icons/mintlayer_14x14.gif");
+    println!("cargo:rerun-if-changed=icons/mask_14x14.gif");
+
+    let path = std::path::PathBuf::from("icons");
+    let reader = ImageReader::open(path.join("mintlayer_14x14.gif")).unwrap();
+    let img = reader.decode().unwrap();
+    let mut gray = img.into_luma8();
+
+    // Apply mask
+    let mask = ImageReader::open(path.join("mask_14x14.gif"))
+        .unwrap()
+        .decode()
+        .unwrap()
+        .into_luma8();
+
+    for (x, y, mask_pixel) in mask.enumerate_pixels() {
+        let mask_value = mask_pixel[0];
+        let mut gray_pixel = *gray.get_pixel(x, y);
+        if mask_value == 0 {
+            gray_pixel = image::Luma([0]);
+        } else {
+            gray_pixel.invert();
+        }
+        gray.put_pixel(x, y, gray_pixel);
+    }
+
+    let glyph_path = std::path::PathBuf::from("glyphs");
+    gray.save_with_format(glyph_path.join("home_nano_nbgl.png"), ImageFormat::Png)
+        .unwrap();
+
+    let output = Command::new("git")
+        .args(["rev-parse", "HEAD"])
+        .output()
+        .expect("Failed to execute git command");
+
+    let git_hash = String::from_utf8(output.stdout).expect("Failed to convert git output to UTF-8");
+
+    // Expose the Git hash as an environment variable
+    println!("cargo:rustc-env=GIT_HASH={}", git_hash.trim());
+
+    // Rerun the build script if .git/HEAD changes
+    println!("cargo:rerun-if-changed=.git/HEAD");
+}
diff --git a/clippy.toml b/clippy.toml
new file mode 100644
index 0000000..8feef8a
--- /dev/null
+++ b/clippy.toml
@@ -0,0 +1,3 @@
+# Clippy will complain if objects smaller that this are boxed.
+# The default is 200 and we sometimes box slightly smaller objects.
+too-large-for-stack = 150
diff --git a/crates/app-core/Cargo.toml b/crates/app-core/Cargo.toml
new file mode 100644
index 0000000..024e4ca
--- /dev/null
+++ b/crates/app-core/Cargo.toml
@@ -0,0 +1,27 @@
+[package]
+name = "mintlayer-app-core"
+version.workspace = true
+edition = "2021"
+
+[dependencies]
+bech32 = { workspace = true, default-features = false, features = ["alloc"] }
+chrono = { workspace = true, default-features = false, features = ["alloc"] }
+hex = { workspace = true, default-features = false, features = ["alloc"] }
+ledger_device_sdk.workspace = true
+ledger_secure_sdk_sys.workspace = true
+
+mintlayer-core-primitives.workspace = true
+mintlayer-messages.workspace = true
+
+[dev-dependencies]
+ledger_device_sdk = { workspace = true, features = ["unit_test"] }
+testmacro.workspace = true
+
+[features]
+default = ["ledger_device_sdk/nano_nbgl"]
+debug = ["ledger_device_sdk/debug"]
+
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = [
+    'cfg(target_os, values("apex_p", "stax", "flex", "nanos", "nanox", "nanosplus"))',
+] }
diff --git a/crates/app-core/src/app_ui/address.rs b/crates/app-core/src/app_ui/address.rs
new file mode 100644
index 0000000..daaa282
--- /dev/null
+++ b/crates/app-core/src/app_ui/address.rs
@@ -0,0 +1,46 @@
+/*****************************************************************************
+ *   Mintlayer Ledger App.
+ *   (c) 2023 Ledger SAS.
+ *   (c) 2025 RBB S.r.l.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *****************************************************************************/
+
+use crate::{
+    app_ui::utils::{compress_public_key, load_glyph, to_address},
+    StatusWord,
+};
+use mintlayer_messages::mlcp::{CoinType, Destination, PublicKey};
+
+use ledger_device_sdk::{
+    ecc::ECPublicKey,
+    nbgl::{NbglAddressReview, NbglGlyph},
+};
+
+pub fn ui_display_pk<const T: char>(
+    public_key: &ECPublicKey<65, T>,
+    coin_type: CoinType,
+) -> Result<bool, StatusWord> {
+    let pk = compress_public_key(public_key)?;
+
+    let dest = Destination::PublicKey(PublicKey::Secp256k1Schnorr(pk));
+    let addr = to_address(&dest, coin_type)?;
+
+    const MINTLAYER: NbglGlyph = load_glyph();
+
+    // Display the address confirmation screen.
+    Ok(NbglAddressReview::new()
+        .glyph(&MINTLAYER)
+        .review_title("Verify ML address")
+        .show(&addr))
+}
diff --git a/crates/app-core/src/app_ui/menu.rs b/crates/app-core/src/app_ui/menu.rs
new file mode 100644
index 0000000..b6dff58
--- /dev/null
+++ b/crates/app-core/src/app_ui/menu.rs
@@ -0,0 +1,32 @@
+/*****************************************************************************
+ *   Mintlayer Ledger App.
+ *   (c) 2023 Ledger SAS.
+ *   (c) 2025 RBB S.r.l.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *****************************************************************************/
+
+use ledger_device_sdk::nbgl::{NbglGlyph, NbglHomeAndSettings};
+
+use crate::app_ui::utils::load_glyph;
+
+pub fn ui_menu_main() -> NbglHomeAndSettings {
+    const MINTLAYER: NbglGlyph = load_glyph();
+
+    // Display the home screen.
+    NbglHomeAndSettings::new().glyph(&MINTLAYER).infos(
+        "Mintlayer",
+        env!("CARGO_PKG_VERSION"),
+        env!("CARGO_PKG_AUTHORS"),
+    )
+}
diff --git a/crates/app-core/src/app_ui/sign.rs b/crates/app-core/src/app_ui/sign.rs
new file mode 100644
index 0000000..4222b50
--- /dev/null
+++ b/crates/app-core/src/app_ui/sign.rs
@@ -0,0 +1,594 @@
+/*****************************************************************************
+ *   Mintlayer Ledger App.
+ *   (c) 2025 RBB S.r.l.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *****************************************************************************/
+
+use alloc::string::String;
+use alloc::{format, string::ToString};
+use core::fmt::Write;
+
+use crate::{
+    app_ui::utils::{
+        bech32m_encode, compress_public_key, load_glyph, to_address, to_public_key_hash,
+    },
+    handlers::sign_tx::{CoinOrTokenId, InputCommand, TxParsingOutputsContext, TxType},
+    StatusWord,
+};
+use mintlayer_messages::{
+    encode,
+    mlcp::{
+        AccountCommand, AccountSpending, Amount, CoinType, Destination, IsTokenFreezable,
+        IsTokenUnfreezable, NftIssuance, OrderAccountCommand, OutputTimeLock, OutputValue,
+        PublicKey, TokenIssuance, TokenTotalSupply, TxOutput, VrfPublicKey, H256,
+    },
+    AddrType,
+};
+
+use chrono::{TimeZone, Utc};
+use ledger_device_sdk::{
+    ecc::ECPublicKey,
+    nbgl::{
+        Field, NbglGlyph, NbglReview, NbglStreamingReview, NbglStreamingReviewStatus,
+        TransactionType,
+    },
+};
+
+struct FormatedOutput {
+    name: &'static str,
+    value: String,
+}
+
+pub fn ui_new_streaming_review() -> NbglStreamingReview {
+    const MINTLAYER: NbglGlyph = load_glyph();
+
+    NbglStreamingReview::new()
+        .glyph(&MINTLAYER)
+        .tx_type(TransactionType::Transaction)
+}
+
+pub fn ui_start_streaming_review(review: &NbglStreamingReview) -> bool {
+    review.start("Review transaction", None)
+}
+
+pub fn ui_streaming_review_show_input(
+    review: &NbglStreamingReview,
+    input: &InputCommand,
+    coin: CoinType,
+) -> Result<bool, StatusWord> {
+    let input = format_input(input, coin)?;
+
+    let fields = [Field {
+        name: input.name,
+        value: &input.value,
+    }];
+
+    let res = match review.next(&fields) {
+        NbglStreamingReviewStatus::Rejected => false,
+        NbglStreamingReviewStatus::Next | NbglStreamingReviewStatus::Skipped => true,
+    };
+
+    Ok(res)
+}
+
+pub fn ui_streaming_review_show_output(
+    review: &NbglStreamingReview,
+    output: &TxOutput,
+    coin: CoinType,
+) -> Result<bool, StatusWord> {
+    let output = format_output(output, coin)?;
+
+    let fields = [Field {
+        name: output.name,
+        value: &output.value,
+    }];
+
+    let res = match review.next(&fields) {
+        NbglStreamingReviewStatus::Rejected => false,
+        NbglStreamingReviewStatus::Next | NbglStreamingReviewStatus::Skipped => true,
+    };
+
+    Ok(res)
+}
+
+pub fn ui_approve_streaming_review(
+    review: &NbglStreamingReview,
+    ctx: &TxParsingOutputsContext,
+) -> Result<bool, StatusWord> {
+    let coin = ctx.coin();
+    let fees = ctx.summary().fees_iter().try_fold(
+        String::new(),
+        |mut acc, res| -> Result<_, StatusWord> {
+            let (coin_or_token, fee) = res?;
+
+            match coin_or_token {
+                CoinOrTokenId::Coin => writeln!(
+                    acc,
+                    "{} {}",
+                    format_amount(Amount::from_atoms(fee), coin),
+                    coin.coin_ticker()
+                )
+                .map_err(|_| StatusWord::TxDisplayFail)?,
+
+                CoinOrTokenId::TokenId(token_id) => {
+                    if fee != 0 {
+                        writeln!(
+                            acc,
+                            "{fee} {}",
+                            id_to_address(token_id, coin.token_id_address_prefix())?
+                        )
+                        .map_err(|_| StatusWord::TxDisplayFail)?
+                    }
+                }
+            };
+
+            Ok(acc)
+        },
+    )?;
+
+    let fields = [Field {
+        name: "Fees:",
+        value: &fees,
+    }];
+
+    match review.next(&fields) {
+        NbglStreamingReviewStatus::Rejected => return Ok(false),
+        NbglStreamingReviewStatus::Next | NbglStreamingReviewStatus::Skipped => {}
+    };
+
+    let title = transaction_title(&ctx.summary().tx_type());
+    Ok(review.finish(title))
+}
+
+fn transaction_title(tx_type: &Option<TxType>) -> &'static str {
+    match tx_type {
+        None | Some(TxType::ComplexTransaction) => "Sign transaction",
+        Some(TxType::Transfer) => "Sign transfer transaction",
+        Some(TxType::Burn) => "Sign burn transaction",
+        Some(TxType::Htlc) => "Sign create HTLC transaction",
+        Some(TxType::CreateDelegation) => "Sign create delegation transaction",
+        Some(TxType::DelegationStake) => "Sign stake delegation transaction",
+        Some(TxType::DelegationWithdrawal) => "Sign withdrawal delegation transaction",
+        Some(TxType::CreateStakePool) => "Sign create stake pool transaction",
+        Some(TxType::DecommissionStakePool) => "Sign decommission stake pool transaction",
+        Some(TxType::CreateNft) => "Sign create NFT transaction",
+        Some(TxType::CreateToken) => "Sign create token transaction",
+        Some(TxType::MintTokens) => "Sign mint tokens transaction",
+        Some(TxType::UnmintTokens) => "Sign unmint tokens transaction",
+        Some(TxType::FreezeToken) => "Sign freeze tokens transaction",
+        Some(TxType::UnfreezeToken) => "Sign unfreeze tokens transaction",
+        Some(TxType::LockTokenSupply) => "Sign lock token supply transaction",
+        Some(TxType::ChangeTokenAuthority) => "Sign change token authority transaction",
+        Some(TxType::ChangeTokenMetadataUri) => "Sign change token metadata URI transaction",
+        Some(TxType::CreateOrder) => "Sign create order transaction",
+        Some(TxType::FillOrder) => "Sign fill order transaction",
+        Some(TxType::FreezeOrder) => "Sign freeze order transaction",
+        Some(TxType::ConcludeOrder) => "Sign conclude order transaction",
+        Some(TxType::DataDeposit) => "Sign data deposit transaction",
+    }
+}
+
+/// Displays a message for review and signing confirmation on the device.
+///
+/// This function handles both printable text and raw binary data by
+/// displaying UTF-8 content directly and falling back to hex encoding for other data.
+///
+/// # Arguments
+///
+/// * `message` - A byte slice (`&[u8]`) containing the message to be signed.
+///
+/// # Returns
+///
+/// * `Ok(true)` if the user approves the signing.
+/// * `Ok(false)` if the user rejects.
+/// * `Err(AppSW)` on error.
+pub fn ui_display_message<const T: char>(
+    message: &[u8],
+    public_key: &ECPublicKey<65, T>,
+    coin_type: CoinType,
+    addr_type: AddrType,
+) -> Result<bool, StatusWord> {
+    let pk = compress_public_key(public_key)?;
+
+    let dest = match addr_type {
+        AddrType::PublicKey => Destination::PublicKey(PublicKey::Secp256k1Schnorr(pk)),
+        AddrType::PublicKeyHash => Destination::PublicKeyHash(to_public_key_hash(&pk)?),
+    };
+    let addr = to_address(&dest, coin_type)?;
+
+    let message_str = match core::str::from_utf8(message) {
+        Ok(s) if s.bytes().all(|b| (0x20..=0x7E).contains(&b)) => s.to_string(),
+        Ok(_) | Err(_) => format!("0x{}", hex::encode(message)),
+    };
+
+    let msg_fields = [
+        Field {
+            name: "Address",
+            value: addr.as_str(),
+        },
+        Field {
+            name: "Message",
+            value: message_str.as_str(),
+        },
+    ];
+
+    const MINTLAYER: NbglGlyph = load_glyph();
+
+    // Create the NBGL review flow with titles appropriate for message signing.
+    let review: NbglReview = NbglReview::new()
+        .titles(
+            "Review message",   // Initial title
+            "Cannot be undone", // Warning on the second screen
+            "Sign message",     // Final confirmation prompt
+        )
+        .tx_type(TransactionType::Message)
+        .glyph(&MINTLAYER);
+
+    // Show the review screen with the defined fields and return the user's choice.
+    Ok(review.show(&msg_fields))
+}
+
+fn vrf_to_address(key: &VrfPublicKey, coin: CoinType) -> Result<String, StatusWord> {
+    bech32m_encode(coin.vrf_public_key_address_prefix(), &encode(key))
+}
+
+fn id_to_address(id: &H256, hrp: &str) -> Result<String, StatusWord> {
+    bech32m_encode(hrp, &id.0)
+}
+
+fn format_amount(amount: Amount, coin: CoinType) -> String {
+    let decimals = coin.coin_decimals() as usize;
+    let mantissa = amount.into_atoms();
+
+    // ceil(log10(u128::MAX)) + 1 for decimal point = 40
+    // This is not the maximum possible length, but a reasonable expectation of it.
+    let mut buffer = String::with_capacity(40);
+    write!(&mut buffer, "{mantissa:0>width$}", width = decimals + 1).unwrap();
+    buffer.insert(buffer.len() - decimals, '.');
+    buffer
+}
+
+fn format_atoms(amount: Amount) -> String {
+    amount.into_atoms().to_string()
+}
+
+fn format_value(value: &OutputValue, coin: CoinType) -> Result<String, StatusWord> {
+    match value {
+        OutputValue::Coin(amount) => Ok(format!("Coins: {}", format_amount(*amount, coin))),
+        OutputValue::TokenV1(token_id, amount) => Ok(format!(
+            "Token: {} {}",
+            id_to_address(token_id.hash(), coin.token_id_address_prefix())?,
+            format_atoms(*amount)
+        )),
+    }
+}
+
+fn format_timestamp(seconds_u64: u64) -> Result<String, StatusWord> {
+    let seconds_i64: i64 = seconds_u64
+        .try_into()
+        .map_err(|_| StatusWord::TxLockTimeInvalid)?;
+    let datetime = Utc
+        .timestamp_opt(seconds_i64, 0)
+        .earliest()
+        .ok_or(StatusWord::TxLockTimeInvalid)?;
+
+    Ok(datetime.format("%Y-%m-%d %H:%M:%S").to_string())
+}
+
+fn format_lock(lock: &OutputTimeLock) -> Result<String, StatusWord> {
+    let s = match lock {
+        OutputTimeLock::UntilHeight(h) => format!("Lock until block height {}", h.0),
+        OutputTimeLock::UntilTime(t) => format!("Lock until {}", format_timestamp(t.0 .0)?),
+        OutputTimeLock::ForBlockCount(b) => format!("Lock for {} blocks", b.0),
+        OutputTimeLock::ForSeconds(s) => format!("Lock for {} seconds", s.0),
+    };
+    Ok(s)
+}
+
+/// Formats a transaction output into a FormatedOutput.
+///
+/// # Arguments
+/// * `output` - A reference to the `TxOutput` enum variant to format.
+/// * `coin` - The coin information, used for formatting amounts.
+///
+/// # Returns
+/// A FormatedOutput containing the title and value of the output.
+fn format_output(output: &TxOutput, coin: CoinType) -> Result<FormatedOutput, StatusWord> {
+    let (name, value) = match output {
+        TxOutput::Transfer(value, destination) => (
+            "Transfer",
+            format!(
+                "Destination: {}\n{}\n",
+                to_address(destination, coin)?,
+                format_value(value, coin)?
+            ),
+        ),
+
+        TxOutput::LockThenTransfer(value, destination, lock) => {
+            let address_short = format!(
+                "Destination: {}\n{}\n{}\n",
+                to_address(destination, coin)?,
+                format_lock(lock)?,
+                format_value(value, coin)?
+            );
+            if cfg!(any(target_os = "nanosplus", target_os = "nanox")) {
+                ("LockThenXfer", address_short)
+            } else {
+                ("Lock then Transfer", address_short)
+            }
+        }
+
+        TxOutput::Burn(value) => ("Burn", format_value(value, coin)?),
+
+        TxOutput::CreateStakePool(pool_id, data) => {
+            let address_short = format!(
+                "Pool ID: {}\nStaker key: {}\nDecommission key: {}\nVRF public key: {}\nMargin ratio per thousand: {}\nCost per block: {}\nPledge{}\n",
+                id_to_address(pool_id.hash(), coin.pool_id_address_prefix())?, to_address(&data.staker, coin)?, to_address(&data.decommission_key, coin)?, vrf_to_address(&data.vrf_public_key, coin)?, data.margin_ratio_per_thousand.0, format_amount(data.cost_per_block, coin),
+                format_amount(data.pledge, coin));
+            ("Create staking pool", address_short)
+        }
+
+        TxOutput::ProduceBlockFromStake(destination, _pool_id) => {
+            let name = if cfg!(any(target_os = "nanosplus", target_os = "nanox")) {
+                "Prod block"
+            } else {
+                "Produce block from stake"
+            };
+
+            (
+                name,
+                format!("New staker key: {}", to_address(destination, coin)?),
+            )
+        }
+        TxOutput::CreateDelegationId(destination, pool_id) => {
+            let address_short = format!(
+                "Address: {}\nPoolId: {}",
+                to_address(destination, coin)?,
+                id_to_address(pool_id.hash(), coin.pool_id_address_prefix())?
+            );
+
+            let name = if cfg!(any(target_os = "nanosplus", target_os = "nanox")) {
+                "Create deleg"
+            } else {
+                "Create delegation"
+            };
+
+            (name, address_short)
+        }
+
+        TxOutput::DelegateStaking(amount, delegation_id) => {
+            let name = if cfg!(any(target_os = "nanosplus", target_os = "nanox")) {
+                "Deleg stake"
+            } else {
+                "Delegate staking"
+            };
+
+            (
+                name,
+                format!(
+                    "\n{}\n{}",
+                    id_to_address(delegation_id.hash(), coin.delegation_id_address_prefix())?,
+                    format_value(&OutputValue::Coin(*amount), coin)?,
+                ),
+            )
+        }
+        TxOutput::IssueFungibleToken(x) => {
+            let TokenIssuance::V1(data) = x;
+
+            let ticker = String::from_utf8_lossy(data.token_ticker.as_ref());
+            let metadata_uri = String::from_utf8_lossy(data.metadata_uri.as_ref());
+
+            let total_supply_str = match data.total_supply {
+                TokenTotalSupply::Unlimited => "UNLIMITED".to_string(),
+                TokenTotalSupply::Lockable => "LOCKABLE".to_string(),
+                TokenTotalSupply::Fixed(amount) => {
+                    let formatted_amount = format_amount(amount, coin);
+                    format!("FIXED {}", formatted_amount)
+                }
+            };
+            let is_freezable = match data.is_freezable {
+                IsTokenFreezable::Yes => "Yes",
+                IsTokenFreezable::No => "No",
+            };
+
+            let address_short = format!(
+                "Ticker: {}\nAuthority: {}\nMetadata URI: {}\nTotal token supply: {}\nNumber of decimals: {}\nIs freezable: {}",
+                ticker, to_address(&data.authority, coin)?, metadata_uri, total_supply_str, data.number_of_decimals, is_freezable
+            );
+            let name = if cfg!(any(target_os = "nanosplus", target_os = "nanox")) {
+                "Issue token"
+            } else {
+                "Issue fungible token"
+            };
+
+            (name, address_short)
+        }
+
+        TxOutput::IssueNft(_nft_id, data, destination) => {
+            let NftIssuance::V0(data) = data;
+            let address_short = format!(
+                "Name: {}\nCreator: {}\nTicker: {}\nAddress: {}\nIcon URI: {}\nAdditional metadata URI: {}\nMedia URI: {}",
+                String::from_utf8_lossy(data.name.as_ref()),
+                data.creator.clone().map(|creator| to_address(&Destination::PublicKey(creator), coin)).transpose()?.unwrap_or_default(),
+                String::from_utf8_lossy(data.ticker.as_ref()),
+                to_address(destination, coin)?,
+                String::from_utf8_lossy(data.icon_uri.as_ref()),
+                String::from_utf8_lossy(data.additional_metadata_uri.as_ref()),
+                String::from_utf8_lossy(data.media_uri.as_ref())
+            );
+            let name = if cfg!(any(target_os = "nanosplus", target_os = "nanox")) {
+                "Issue NFT"
+            } else {
+                "Issue NFT token"
+            };
+
+            (name, address_short)
+        }
+
+        TxOutput::DataDeposit(data) => ("Data deposit", hex::encode(data)),
+
+        TxOutput::Htlc(value, data) => {
+            let address_short = format!(
+                "Secret hash: {}\nSpend key: {}\nRefund key: {}\nRefund time lock: {}\n{}",
+                hex::encode(data.secret_hash.0),
+                to_address(&data.spend_key, coin)?,
+                to_address(&data.refund_key, coin)?,
+                format_lock(&data.refund_timelock)?,
+                format_value(value, coin)?
+            );
+            ("HTLC", address_short)
+        }
+
+        TxOutput::CreateOrder(data) => {
+            let ask_amount = format_value(&data.ask, coin)?;
+            let give_amount = format_value(&data.give, coin)?;
+            let address_short = format!(
+                "Conclude key: {}\nAsk: {}\nGive: {}",
+                to_address(&data.conclude_key, coin)?,
+                ask_amount,
+                give_amount
+            );
+            ("Create order", address_short)
+        }
+    };
+
+    Ok(FormatedOutput { name, value })
+}
+
+fn format_input(input: &InputCommand, coin: CoinType) -> Result<FormatedOutput, StatusWord> {
+    let (name, value) = match input {
+        InputCommand::AccountSpending(cmd) => match cmd {
+            AccountSpending::DelegationBalance(delegation_id, amount) => {
+                let address_short = format!(
+                    "Delegation ID: {}\nAmount: {}",
+                    id_to_address(delegation_id.hash(), coin.delegation_id_address_prefix())?,
+                    format_amount(*amount, coin)
+                );
+                if cfg!(any(target_os = "nanosplus", target_os = "nanox")) {
+                    ("Del Wdrwl", address_short)
+                } else {
+                    ("Delegation withdrawal", address_short)
+                }
+            }
+        },
+        InputCommand::AccountCommand(cmd) => match cmd {
+            AccountCommand::MintTokens(token_id, amount) => {
+                let address_short = format!(
+                    "Token ID: {}\nAmount: {}",
+                    id_to_address(token_id.hash(), coin.token_id_address_prefix())?,
+                    format_amount(*amount, coin)
+                );
+                ("Mint tokens", address_short)
+            }
+            AccountCommand::UnmintTokens(token_id) => {
+                let address_short = format!(
+                    "Token ID: {}",
+                    id_to_address(token_id.hash(), coin.token_id_address_prefix())?,
+                );
+                ("Unmint tokens", address_short)
+            }
+            AccountCommand::LockTokenSupply(token_id) => {
+                let address_short = format!(
+                    "Token ID: {}",
+                    id_to_address(token_id.hash(), coin.token_id_address_prefix())?
+                );
+                if cfg!(any(target_os = "nanosplus", target_os = "nanox")) {
+                    ("Lock token", address_short)
+                } else {
+                    ("Lock token supply", address_short)
+                }
+            }
+            AccountCommand::FreezeToken(token_id, is_unfreezable) => {
+                let address_short = format!(
+                    "Token ID: {}\nIs unfreezable: {}",
+                    id_to_address(token_id.hash(), coin.token_id_address_prefix())?,
+                    if *is_unfreezable == IsTokenUnfreezable::Yes {
+                        "Yes"
+                    } else {
+                        "No"
+                    }
+                );
+                ("Freeze token", address_short)
+            }
+            AccountCommand::UnfreezeToken(token_id) => {
+                let address_short = format!(
+                    "Token ID: {}",
+                    id_to_address(token_id.hash(), coin.token_id_address_prefix())?,
+                );
+                if cfg!(any(target_os = "nanosplus", target_os = "nanox")) {
+                    ("Unfrz token", address_short)
+                } else {
+                    ("Unfreeze token", address_short)
+                }
+            }
+            AccountCommand::ChangeTokenAuthority(token_id, new_authority) => {
+                let address_short = format!(
+                    "Token ID: {}\nNew authority: {}",
+                    id_to_address(token_id.hash(), coin.token_id_address_prefix())?,
+                    to_address(new_authority, coin)?
+                );
+                if cfg!(any(target_os = "nanosplus", target_os = "nanox")) {
+                    ("Chg token auth", address_short)
+                } else {
+                    ("Change token authority", address_short)
+                }
+            }
+            AccountCommand::ChangeTokenMetadataUri(token_id, new_metadata_uri) => {
+                let address_short = format!(
+                    "Token ID: {}\nNew metadata URI: {}",
+                    id_to_address(token_id.hash(), coin.token_id_address_prefix())?,
+                    String::from_utf8_lossy(new_metadata_uri)
+                );
+                if cfg!(any(target_os = "nanosplus", target_os = "nanox")) {
+                    ("Chg token meta", address_short)
+                } else {
+                    ("Change token metadata URI", address_short)
+                }
+            }
+            AccountCommand::ConcludeOrder(_) | AccountCommand::FillOrder(_, _, _) => {
+                return Err(StatusWord::OrdersV0NotSupported)
+            }
+        },
+        InputCommand::OrderCommand(cmd) => match cmd {
+            OrderAccountCommand::FillOrder(order_id, fill_amount) => {
+                let address_short = format!(
+                    "Order ID: {}\nFill amount: {}",
+                    id_to_address(order_id.hash(), coin.order_id_address_prefix())?,
+                    format_amount(*fill_amount, coin),
+                );
+                ("Fill order", address_short)
+            }
+            OrderAccountCommand::FreezeOrder(order_id) => {
+                let address_short = format!(
+                    "Order ID: {}",
+                    id_to_address(order_id.hash(), coin.order_id_address_prefix())?
+                );
+                ("Freeze order", address_short)
+            }
+            OrderAccountCommand::ConcludeOrder(order_id) => {
+                let address_short = format!(
+                    "Order ID: {}",
+                    id_to_address(order_id.hash(), coin.order_id_address_prefix())?
+                );
+                if cfg!(any(target_os = "nanosplus", target_os = "nanox")) {
+                    ("Conclude ord", address_short)
+                } else {
+                    ("Conclude order", address_short)
+                }
+            }
+        },
+    };
+
+    Ok(FormatedOutput { name, value })
+}
diff --git a/crates/app-core/src/app_ui/utils.rs b/crates/app-core/src/app_ui/utils.rs
new file mode 100644
index 0000000..92a5200
--- /dev/null
+++ b/crates/app-core/src/app_ui/utils.rs
@@ -0,0 +1,106 @@
+/*****************************************************************************
+ *   Mintlayer Ledger App.
+ *   (c) 2025 RBB S.r.l.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *****************************************************************************/
+
+use alloc::string::String;
+
+use ledger_device_sdk::{
+    ecc::ECPublicKey,
+    hash::{blake2::Blake2b_512, HashInit},
+    include_gif,
+    nbgl::NbglGlyph,
+};
+
+use crate::StatusWord;
+use mintlayer_messages::{
+    encode,
+    mlcp::{CoinType, Destination, PublicKeyHash, Secp256k1PublicKey},
+};
+
+pub fn bech32m_encode(hrp: &str, data: &[u8]) -> Result<String, StatusWord> {
+    let parsed_hrp = bech32::Hrp::parse(hrp).map_err(|_| StatusWord::TxAddressFail)?;
+
+    let encoded = bech32::encode::<bech32::Bech32m>(parsed_hrp, data)
+        .map_err(|_| StatusWord::TxAddressFail)?;
+
+    Ok(encoded)
+}
+
+pub fn to_address(destination: &Destination, coin: CoinType) -> Result<String, StatusWord> {
+    let hrp = coin.address_prefix(destination.into());
+    bech32m_encode(hrp, &encode(destination))
+}
+
+/// Load glyph from file with include_gif macro. Creates an NBGL compatible glyph.
+pub const fn load_glyph() -> NbglGlyph<'static> {
+    #[cfg(target_os = "apex_p")]
+    const MINTLAYER: NbglGlyph =
+        NbglGlyph::from_include(include_gif!("../../glyphs/mintlayer_48x48.png", NBGL));
+    #[cfg(any(target_os = "stax", target_os = "flex"))]
+    const MINTLAYER: NbglGlyph =
+        NbglGlyph::from_include(include_gif!("../../glyphs/mintlayer_64x64.gif", NBGL));
+    #[cfg(any(target_os = "nanosplus", target_os = "nanox"))]
+    const MINTLAYER: NbglGlyph =
+        NbglGlyph::from_include(include_gif!("../../icons/mintlayer_14x14.gif", NBGL));
+
+    MINTLAYER
+}
+
+pub fn compress_public_key<const T: char>(
+    public_key: &ECPublicKey<65, T>,
+) -> Result<Secp256k1PublicKey, StatusWord> {
+    let uncompressed_key = &public_key.pubkey;
+    if uncompressed_key[0] != 0x04 {
+        return Err(StatusWord::InvalidUncompressedPublicKey);
+    }
+
+    let mut compressed_key = [0u8; 33];
+
+    let y_coordinate = &uncompressed_key[33..65];
+    let prefix = if y_coordinate[31].is_multiple_of(2) {
+        0x02
+    } else {
+        0x03
+    };
+
+    compressed_key[0] = prefix;
+
+    let x_coordinate = &uncompressed_key[1..33];
+    compressed_key[1..].copy_from_slice(x_coordinate);
+
+    Ok(Secp256k1PublicKey(compressed_key))
+}
+
+pub fn to_public_key_hash(pk: &Secp256k1PublicKey) -> Result<PublicKeyHash, StatusWord> {
+    let mut blake2b256 = Blake2b_512::new();
+    let mut public_key_hash: [u8; 64] = [0u8; 64];
+
+    blake2b256
+        .update(&[0])
+        .map_err(|_| StatusWord::TxHashFail)?;
+    blake2b256
+        .update(&pk.0)
+        .map_err(|_| StatusWord::TxHashFail)?;
+
+    blake2b256
+        .finalize(&mut public_key_hash)
+        .map_err(|_| StatusWord::TxHashFail)?;
+
+    let mut pkh = [0u8; 20];
+    pkh.copy_from_slice(&public_key_hash[0..20]);
+
+    Ok(PublicKeyHash(pkh))
+}
diff --git a/crates/app-core/src/errors.rs b/crates/app-core/src/errors.rs
new file mode 100644
index 0000000..364bb55
--- /dev/null
+++ b/crates/app-core/src/errors.rs
@@ -0,0 +1,56 @@
+/*****************************************************************************
+ *   Mintlayer Ledger App.
+ *   (c) 2025 RBB S.r.l.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *****************************************************************************/
+
+use ledger_device_sdk::ecc::CxError;
+use mintlayer_messages::StatusWord;
+
+pub fn cx_err_to_status(e: CxError) -> StatusWord {
+    match e {
+        CxError::Carry => StatusWord::EccCarry,
+        CxError::Locked => StatusWord::EccLocked,
+        CxError::Unlocked => StatusWord::EccUnlocked,
+        CxError::NotLocked => StatusWord::EccNotLocked,
+        CxError::NotUnlocked => StatusWord::EccNotUnlocked,
+        CxError::InternalError => StatusWord::EccInternalError,
+        CxError::InvalidParameterSize => StatusWord::EccInvalidParameterSize,
+        CxError::InvalidParameterValue => StatusWord::EccInvalidParameterValue,
+        CxError::InvalidParameter => StatusWord::EccInvalidParameter,
+        CxError::NotInvertible => StatusWord::EccNotInvertible,
+        CxError::Overflow => StatusWord::EccOverflow,
+        CxError::MemoryFull => StatusWord::EccMemoryFull,
+        CxError::NoResidue => StatusWord::EccNoResidue,
+        CxError::PointAtInfinity => StatusWord::EccPointAtInfinity,
+        CxError::InvalidPoint => StatusWord::EccInvalidPoint,
+        CxError::InvalidCurve => StatusWord::EccInvalidCurve,
+        CxError::GenericError => StatusWord::EccGenericError,
+    }
+}
+
+pub fn sdk_err_to_status(e: ledger_device_sdk::io::StatusWords) -> StatusWord {
+    match e {
+        ledger_device_sdk::io::StatusWords::Ok => StatusWord::Ok,
+        ledger_device_sdk::io::StatusWords::BadCla => StatusWord::ClaNotSupported,
+        ledger_device_sdk::io::StatusWords::NothingReceived => StatusWord::NothingReceived,
+        ledger_device_sdk::io::StatusWords::BadIns => StatusWord::InsNotSupported,
+        ledger_device_sdk::io::StatusWords::BadP1P2 => StatusWord::WrongP1P2,
+        ledger_device_sdk::io::StatusWords::BadLen => StatusWord::WrongApduLength,
+        ledger_device_sdk::io::StatusWords::UserCancelled => StatusWord::Deny,
+        ledger_device_sdk::io::StatusWords::Unknown => StatusWord::Unknown,
+        ledger_device_sdk::io::StatusWords::Panic => StatusWord::Panic,
+        ledger_device_sdk::io::StatusWords::DeviceLocked => StatusWord::DeviceLocked,
+    }
+}
diff --git a/crates/app-core/src/handlers/get_public_key.rs b/crates/app-core/src/handlers/get_public_key.rs
new file mode 100644
index 0000000..86b7c44
--- /dev/null
+++ b/crates/app-core/src/handlers/get_public_key.rs
@@ -0,0 +1,55 @@
+/*****************************************************************************
+ *   Mintlayer Ledger App.
+ *   (c) 2025 RBB S.r.l.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *****************************************************************************/
+
+use crate::app_ui::address::ui_display_pk;
+use crate::StatusWord;
+use mintlayer_messages::{
+    mlcp::CoinType, ChainCode, GetPublicKeyResponse, PublicKey, PublicKeyReq,
+};
+
+use ledger_device_sdk::ecc::{Secp256k1, SeedDerive};
+
+// Path should be at least [bip44, coin_type, account_index]
+const MIN_PATH_LEN: usize = 3;
+
+pub fn handle_get_public_key(
+    req: PublicKeyReq,
+    display: bool,
+) -> Result<GetPublicKeyResponse, StatusWord> {
+    if req.path.as_ref().len() < MIN_PATH_LEN {
+        return Err(StatusWord::InvalidPath);
+    }
+    let coin_type: CoinType = req.coin_type.into();
+    if req.path.as_ref()[1] != coin_type.bip44_coin_type() {
+        return Err(StatusWord::InvalidPath);
+    }
+
+    let (k, cc) = Secp256k1::derive_from(req.path.as_ref());
+    let pk = k.public_key().map_err(|_| StatusWord::KeyDeriveFail)?;
+    let code = cc.ok_or(StatusWord::KeyDeriveFail)?;
+
+    // Display address on device if requested
+    if display && !ui_display_pk(&pk, req.coin_type.into())? {
+        return Err(StatusWord::Deny);
+    }
+    let response = GetPublicKeyResponse {
+        public_key: PublicKey(pk.pubkey),
+        chain_code: ChainCode(code.value),
+    };
+
+    Ok(response)
+}
diff --git a/crates/app-core/src/handlers/sign_message.rs b/crates/app-core/src/handlers/sign_message.rs
new file mode 100644
index 0000000..5a60d55
--- /dev/null
+++ b/crates/app-core/src/handlers/sign_message.rs
@@ -0,0 +1,131 @@
+/*****************************************************************************
+ *   Mintlayer Ledger App.
+ *   (c) 2025 RBB S.r.l.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *****************************************************************************/
+
+use crate::{
+    app_ui::sign::ui_display_message, errors::cx_err_to_status, handlers::utils::mintlayer_hash,
+    DataContext, StatusWord,
+};
+use mintlayer_messages::{
+    mlcp::CoinType, AddrType, Bip32Path, MsgSignatureResponse, SignMessageReq, SignatureResponse,
+};
+
+use alloc::vec::Vec;
+use ledger_device_sdk::ecc::{ECPrivateKey, Secp256k1, SeedDerive};
+use ledger_secure_sdk_sys::*;
+
+pub struct SignMessageContext {
+    path: Bip32Path,
+    coin: CoinType,
+    addr_type: AddrType,
+    review_finished: bool,
+}
+
+impl SignMessageContext {
+    pub fn new(req: SignMessageReq) -> Self {
+        Self {
+            path: req.path,
+            coin: req.coin.into(),
+            addr_type: req.addr_type,
+            review_finished: false,
+        }
+    }
+
+    pub fn finished(&self) -> bool {
+        self.review_finished
+    }
+}
+
+pub fn setup_sign_message(req: SignMessageReq) -> DataContext {
+    DataContext::SignMessageContext(SignMessageContext::new(req))
+}
+
+pub fn handle_sign_message(
+    message: &[u8],
+    ctx: &mut SignMessageContext,
+) -> Result<MsgSignatureResponse, StatusWord> {
+    let private_key = Secp256k1::derive_from_path(ctx.path.as_ref());
+    let public_key = private_key
+        .public_key()
+        .map_err(|_| StatusWord::KeyDeriveFail)?;
+
+    // Display review. If user approves sign it.
+    // Otherwise, return a "deny" status word.
+    if ui_display_message(message, &public_key, ctx.coin, ctx.addr_type)? {
+        ctx.review_finished = true;
+        Ok(compute_signature(&private_key, message)?)
+    } else {
+        ctx.review_finished = true;
+        Err(StatusWord::Deny)
+    }
+}
+
+fn compute_signature<const N: usize>(
+    private_key: &ECPrivateKey<N, 'W'>,
+    message: &[u8],
+) -> Result<MsgSignatureResponse, StatusWord> {
+    const MESSAGE_MAGIC_PREFIX: &str = "===MINTLAYER MESSAGE BEGIN===\n";
+    const MESSAGE_MAGIC_SUFFIX: &str = "\n===MINTLAYER MESSAGE END===";
+
+    let message = MESSAGE_MAGIC_PREFIX
+        .as_bytes()
+        .iter()
+        .chain(message.iter())
+        .chain(MESSAGE_MAGIC_SUFFIX.as_bytes().iter())
+        .copied()
+        .collect::<Vec<_>>();
+
+    let message_hash = mintlayer_hash(&message)?;
+    let message_hash2 = mintlayer_hash(message_hash.as_bytes())?;
+
+    let sig = schnorr_sign(private_key, message_hash2.as_bytes())?;
+
+    let response = MsgSignatureResponse {
+        signature: SignatureResponse(sig),
+    };
+
+    Ok(response)
+}
+
+pub fn schnorr_sign<const N: usize>(
+    private_key: &ECPrivateKey<N, 'W'>,
+    msg: &[u8],
+) -> Result<[u8; 64], StatusWord> {
+    const HASH_ALGORITHM_ID: u8 = CX_SHA256;
+    const SIGNING_MODE: u32 = CX_ECSCHNORR_BIP0340 | CX_RND_PROVIDED | CX_LAST;
+
+    let mut sig = [0u8; 64];
+    let mut sig_len = 64;
+
+    // The `unsafe` block is required for FFI.
+    let err_code = unsafe {
+        cx_ecschnorr_sign_no_throw(
+            private_key as *const ECPrivateKey<N, 'W'> as *const cx_ecfp_256_private_key_s,
+            SIGNING_MODE,
+            HASH_ALGORITHM_ID,
+            msg.as_ptr(),
+            msg.len(),
+            sig.as_mut_ptr(),
+            &mut sig_len,
+        )
+    };
+
+    if err_code != CX_OK {
+        Err(cx_err_to_status(err_code.into()))
+    } else {
+        Ok(sig)
+    }
+}
diff --git a/crates/app-core/src/handlers/sign_tx/mod.rs b/crates/app-core/src/handlers/sign_tx/mod.rs
new file mode 100644
index 0000000..cbde975
--- /dev/null
+++ b/crates/app-core/src/handlers/sign_tx/mod.rs
@@ -0,0 +1,493 @@
+/*****************************************************************************
+ *   Mintlayer Ledger App.
+ *   (c) 2025 RBB S.r.l.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *****************************************************************************/
+
+use alloc::{boxed::Box, vec::Vec};
+
+use crate::{
+    app_ui::sign::{
+        ui_approve_streaming_review, ui_new_streaming_review, ui_start_streaming_review,
+        ui_streaming_review_show_input, ui_streaming_review_show_output,
+    },
+    handlers::{sign_message::schnorr_sign, utils::mintlayer_hash},
+    DataContext, StatusWord,
+};
+use mintlayer_messages::{
+    encode_as_compact, encode_to,
+    mlcp::{CoinType as PCoinType, SighashInputCommitment, H256},
+    CoinType, Encode, InputAddressPath, Response, SignTxReq, SignatureResponse, TxInputReq,
+    TxInputSignatureResponse, TxMetadataReq, TxMetadataV1Req, TxMetadataVersionReq, TxOutputReq,
+};
+
+use ledger_device_sdk::{
+    ecc::{Secp256k1, SeedDerive},
+    hash::{blake2::Blake2b_512, HashInit},
+    nbgl::{NbglSpinner, NbglStreamingReview},
+};
+
+mod summary_collector;
+use summary_collector::TxSummaryCollector;
+pub use summary_collector::{CoinOrTokenId, InputCommand, TxType};
+
+const BIP44: u32 = 44 + (1 << 31);
+
+// BIP44/COIN/ACCOUNT/PURPOSE/INDEX
+const DERIVATION_PATH_LEN: usize = 5;
+// DERIVATION_PATH_LEN without the BIP44 and COIN as they are the same for all
+const COMPRESSED_DERIVATION_PATH_LEN: usize = 3;
+
+// we try to save a few bytes instead of using usize for indexes,
+// u32 is enough to cover max possible number of inputs and outputs
+type Index = u32;
+
+pub struct InputCompressed {
+    pub path: [u32; COMPRESSED_DERIVATION_PATH_LEN],
+    pub input_idx: Index,
+    pub multisig_idx: Option<Index>,
+}
+
+impl InputCompressed {
+    fn new(addr: InputAddressPath, input_idx: Index, coin: PCoinType) -> Result<Self, StatusWord> {
+        let path = addr.path.as_ref();
+        if path.len() != DERIVATION_PATH_LEN {
+            return Err(StatusWord::TxInvalidInputPath);
+        }
+
+        if path[0] != BIP44 {
+            return Err(StatusWord::TxInvalidInputPath);
+        }
+
+        if path[1] != coin.bip44_coin_type() {
+            return Err(StatusWord::TxInvalidInputPath);
+        }
+
+        Ok(Self {
+            path: path[2..]
+                .try_into()
+                .map_err(|_| StatusWord::TxInvalidInputPath)?,
+            input_idx,
+            multisig_idx: addr.multisig_idx,
+        })
+    }
+}
+
+pub struct TxMetadata {
+    coin: PCoinType,
+    num_inputs: Index,
+    num_outputs: Index,
+}
+
+pub struct TxParsingInputsContext {
+    metadata: TxMetadata,
+
+    tx_hasher: Blake2b_512,
+    input_commitments_hasher: Blake2b_512,
+
+    summary: TxSummaryCollector,
+    inputs: Vec<InputCompressed>,
+
+    spinner: NbglSpinner,
+
+    num_inputs_parsed: Index,
+}
+
+pub struct TxParsingInputCommitmentsContext {
+    metadata: TxMetadata,
+
+    tx_hasher: Blake2b_512,
+    input_commitments_hasher: Blake2b_512,
+    input_commitments_hash: [u8; 64],
+
+    summary: TxSummaryCollector,
+    inputs: Vec<InputCompressed>,
+
+    spinner: NbglSpinner,
+
+    num_inputs_parsed: Index,
+}
+
+impl TxParsingInputCommitmentsContext {
+    fn advance_next_input_additional_info_step(
+        mut self: Box<Self>,
+        review: &NbglStreamingReview,
+    ) -> Result<TxParsingContext, StatusWord> {
+        let finished_with_inputs = self.num_inputs_parsed >= (self.metadata.num_inputs - 1);
+
+        if finished_with_inputs {
+            // Make sure the hashes match before continuing with the outputs
+            let mut input_commitments_hash: [u8; 64] = [0u8; 64];
+            self.input_commitments_hasher
+                .finalize(&mut input_commitments_hash)
+                .map_err(|_| StatusWord::TxHashFail)?;
+
+            if input_commitments_hash != self.input_commitments_hash {
+                return Err(StatusWord::DifferentInputCommitmentHash);
+            }
+
+            if !ui_start_streaming_review(review) {
+                return Err(StatusWord::Deny);
+            }
+
+            if let Some(command) = self.summary.input_command() {
+                if !ui_streaming_review_show_input(review, command, self.metadata.coin)? {
+                    return Err(StatusWord::Deny);
+                }
+            }
+
+            self.tx_hasher
+                .update(&encode_as_compact(self.metadata.num_outputs))
+                .map_err(|_| StatusWord::TxHashFail)?;
+            let new_context = TxParsingContext::ParsingOutputs(Box::new(TxParsingOutputsContext {
+                metadata: self.metadata,
+
+                tx_hasher: self.tx_hasher,
+
+                summary: self.summary,
+                inputs: self.inputs,
+
+                spinner: self.spinner,
+
+                num_outputs_parsed: 0,
+            }));
+            Ok(new_context)
+        } else {
+            self.num_inputs_parsed += 1;
+            Ok(TxParsingContext::ParsingInputCommitments(self))
+        }
+    }
+}
+
+impl TxParsingInputsContext {
+    fn advance_next_input_step(mut self: Box<Self>) -> Result<TxParsingContext, StatusWord> {
+        self.num_inputs_parsed += 1;
+        let finished_with_inputs = self.num_inputs_parsed >= self.metadata.num_inputs;
+
+        if finished_with_inputs {
+            if self.inputs.is_empty() {
+                return Err(StatusWord::NothingToSign);
+            }
+
+            // Update hash for input commitments and proceed with outputs
+            self.tx_hasher
+                .update(&self.metadata.num_inputs.to_le_bytes())
+                .map_err(|_| StatusWord::TxHashFail)?;
+
+            let mut input_commitments_hash: [u8; 64] = [0u8; 64];
+            self.input_commitments_hasher
+                .finalize(&mut input_commitments_hash)
+                .map_err(|_| StatusWord::TxHashFail)?;
+
+            Ok(TxParsingContext::ParsingInputCommitments(Box::new(
+                TxParsingInputCommitmentsContext {
+                    metadata: self.metadata,
+                    tx_hasher: self.tx_hasher,
+                    input_commitments_hasher: Blake2b_512::new(),
+                    input_commitments_hash,
+                    summary: self.summary,
+                    inputs: self.inputs,
+                    spinner: self.spinner,
+                    num_inputs_parsed: 0,
+                },
+            )))
+        } else {
+            Ok(TxParsingContext::ParsingInputs(self))
+        }
+    }
+}
+
+pub struct TxParsingOutputsContext {
+    metadata: TxMetadata,
+
+    tx_hasher: Blake2b_512,
+
+    summary: TxSummaryCollector,
+    inputs: Vec<InputCompressed>,
+
+    spinner: NbglSpinner,
+
+    num_outputs_parsed: Index,
+}
+
+impl TxParsingOutputsContext {
+    pub fn coin(&self) -> PCoinType {
+        self.metadata.coin
+    }
+
+    pub fn summary(&self) -> &TxSummaryCollector {
+        &self.summary
+    }
+
+    fn advance_next_output_state(
+        mut self: Box<Self>,
+        review: &NbglStreamingReview,
+    ) -> Result<TxParsingContext, StatusWord> {
+        if self.num_outputs_parsed < (self.metadata.num_outputs - 1) {
+            self.num_outputs_parsed += 1;
+            Ok(TxParsingContext::ParsingOutputs(self))
+        } else {
+            // Finalize the tx hash for signing
+            let mut message_hash: [u8; 64] = [0u8; 64];
+            self.tx_hasher
+                .finalize(&mut message_hash)
+                .map_err(|_| StatusWord::TxHashFail)?;
+
+            let tx_hash = mintlayer_hash(&message_hash[0..32])?;
+
+            if ui_approve_streaming_review(review, &self)? {
+                Ok(TxParsingContext::Signing(Box::new(TxSigningContext {
+                    metadata: self.metadata,
+                    inputs: self.inputs,
+                    spinner: self.spinner,
+                    num_inputs_signed: 0,
+                    tx_hash,
+                })))
+            } else {
+                Err(StatusWord::Deny)
+            }
+        }
+    }
+}
+
+pub struct TxSigningContext {
+    metadata: TxMetadata,
+    tx_hash: H256,
+
+    inputs: Vec<InputCompressed>,
+
+    spinner: NbglSpinner,
+
+    num_inputs_signed: Index,
+}
+
+impl TxSigningContext {
+    fn compute_signature_and_append(
+        mut self: Box<Self>,
+    ) -> Result<(TxInputSignatureResponse, TxParsingContext), StatusWord> {
+        let address = self
+            .inputs
+            .get(self.num_inputs_signed as usize)
+            .ok_or(StatusWord::WrongContext)?;
+
+        let [p1, p2, p3] = address.path;
+        let addr = [BIP44, self.metadata.coin.bip44_coin_type(), p1, p2, p3];
+
+        let private_key = Secp256k1::derive_from_path(&addr);
+        let sig = schnorr_sign(&private_key, self.tx_hash.as_bytes())?;
+
+        let signature = SignatureResponse(sig);
+        let input_idx = address.input_idx;
+        let multisig_idx = address.multisig_idx;
+
+        let has_next = ((self.num_inputs_signed + 1) as usize) < self.inputs.len();
+
+        let response = TxInputSignatureResponse {
+            signature,
+            multisig_idx,
+            input_idx,
+            has_next,
+        };
+
+        let new_ctx = if has_next {
+            self.num_inputs_signed += 1;
+            TxParsingContext::Signing(self)
+        } else {
+            TxParsingContext::Finished
+        };
+
+        Ok((response, new_ctx))
+    }
+}
+
+pub enum TxParsingContext {
+    ParsingInputs(Box<TxParsingInputsContext>),
+    ParsingInputCommitments(Box<TxParsingInputCommitmentsContext>),
+    ParsingOutputs(Box<TxParsingOutputsContext>),
+    Signing(Box<TxSigningContext>),
+    Finished,
+}
+
+impl TxParsingContext {
+    pub fn from_v1(
+        coin: CoinType,
+        TxMetadataV1Req {
+            num_inputs,
+            num_outputs,
+        }: TxMetadataV1Req,
+    ) -> Result<Self, StatusWord> {
+        const VERSION_1: u8 = 1;
+        let mut tx_hasher = Blake2b_512::new();
+        // mode
+        tx_hasher
+            .update(b"\x01")
+            .map_err(|_| StatusWord::TxHashFail)?;
+        // version
+        tx_hasher
+            .update(&[VERSION_1])
+            .map_err(|_| StatusWord::TxHashFail)?;
+        // flags
+        tx_hasher
+            .update(&[0; 16])
+            .map_err(|_| StatusWord::TxHashFail)?;
+
+        tx_hasher
+            .update(&num_inputs.to_le_bytes())
+            .map_err(|_| StatusWord::TxHashFail)?;
+
+        Ok(Self::ParsingInputs(Box::new(TxParsingInputsContext {
+            metadata: TxMetadata {
+                coin: coin.into(),
+                num_inputs,
+                num_outputs,
+            },
+            tx_hasher,
+            spinner: NbglSpinner::new(),
+            summary: TxSummaryCollector::new(),
+            num_inputs_parsed: 0,
+            input_commitments_hasher: Blake2b_512::new(),
+            inputs: Vec::new(),
+        })))
+    }
+
+    /// Shows a spinner while processing the inputs and input commitments if there are more than a few
+    /// as well as while signing and returning the signatures.
+    pub fn show_spinner(&mut self) {
+        let (metadata, spinner) = match self {
+            Self::ParsingInputs(ctx) => (&ctx.metadata, &mut ctx.spinner),
+            Self::ParsingInputCommitments(ctx) => (&ctx.metadata, &mut ctx.spinner),
+            Self::Signing(ctx) => {
+                ctx.spinner.show("Signing...");
+                return;
+            }
+            // While parsing outputs we are showing the review and not the spinner
+            Self::ParsingOutputs(_) | Self::Finished => return,
+        };
+
+        // We show a spinner while processing the inputs and input commitments if there are more than 5
+        // 5 was chosen somewhat arbitrarily
+        let transaction_has_many_inputs = metadata.num_inputs > 5;
+
+        if transaction_has_many_inputs {
+            spinner.show("Parsing transaction...");
+        }
+    }
+
+    pub fn finished(&self) -> bool {
+        matches!(self, Self::Finished)
+    }
+}
+
+pub fn setup_sign_tx(req: TxMetadataReq) -> Result<DataContext, StatusWord> {
+    let mut tx_ctx = match req.version {
+        TxMetadataVersionReq::V1(v1_req) => TxParsingContext::from_v1(req.coin, v1_req)?,
+    };
+
+    tx_ctx.show_spinner();
+
+    Ok(DataContext::TxContext(tx_ctx, ui_new_streaming_review()))
+}
+
+fn handle_input_req(
+    req: Box<TxInputReq>,
+    mut ctx: Box<TxParsingInputsContext>,
+) -> Result<TxParsingContext, StatusWord> {
+    let num_inputs_parsed = ctx.num_inputs_parsed;
+    let compressed_inputs = req
+        .addresses
+        .into_iter()
+        .map(|a| InputCompressed::new(a, num_inputs_parsed, ctx.metadata.coin))
+        .collect::<Result<Vec<_>, StatusWord>>()?;
+    ctx.inputs.extend(compressed_inputs);
+
+    ctx.summary.process_input(&req.inp)?;
+
+    let (input, commitment) = req.inp.into_input_and_commitment();
+    update_hash(&commitment, &mut ctx.input_commitments_hasher)?;
+    update_hash(&input, &mut ctx.tx_hasher)?;
+    ctx.advance_next_input_step()
+}
+
+fn handle_input_commitment_req(
+    req: &SighashInputCommitment,
+    mut ctx: Box<TxParsingInputCommitmentsContext>,
+    review: &NbglStreamingReview,
+) -> Result<TxParsingContext, StatusWord> {
+    update_hash(req, &mut ctx.input_commitments_hasher)?;
+    update_hash(req, &mut ctx.tx_hasher)?;
+    ctx.advance_next_input_additional_info_step(review)
+}
+
+fn handle_output_req(
+    req: &TxOutputReq,
+    mut ctx: Box<TxParsingOutputsContext>,
+    review: &NbglStreamingReview,
+) -> Result<TxParsingContext, StatusWord> {
+    if ui_streaming_review_show_output(review, &req.out, ctx.metadata.coin)? {
+        ctx.summary.process_output(&req.out)?;
+        update_hash(&req.out, &mut ctx.tx_hasher)?;
+        ctx.advance_next_output_state(review)
+    } else {
+        Err(StatusWord::Deny)
+    }
+}
+
+pub fn handle_sign_tx(
+    req: SignTxReq,
+    ctx: TxParsingContext,
+    review: &mut NbglStreamingReview,
+) -> Result<(Response, TxParsingContext), StatusWord> {
+    let new_ctx = match (req, ctx) {
+        (SignTxReq::Input(req), TxParsingContext::ParsingInputs(ctx)) => {
+            handle_input_req(req, ctx)?
+        }
+        (SignTxReq::InputCommitment(req), TxParsingContext::ParsingInputCommitments(ctx)) => {
+            handle_input_commitment_req(req.as_ref(), ctx, review)?
+        }
+        (SignTxReq::Output(req), TxParsingContext::ParsingOutputs(ctx)) => {
+            handle_output_req(req.as_ref(), ctx, review)?
+        }
+        (SignTxReq::NextSignature, TxParsingContext::Signing(ctx)) => {
+            TxParsingContext::Signing(ctx)
+        }
+        (SignTxReq::NextSignature, TxParsingContext::Finished) => {
+            return Err(StatusWord::TxAlreadyFinished)
+        }
+        _ => return Err(StatusWord::WrongContext),
+    };
+
+    let new_ctx = match new_ctx {
+        ctx @ (TxParsingContext::ParsingInputs(_)
+        | TxParsingContext::Finished
+        | TxParsingContext::ParsingInputCommitments(_)
+        | TxParsingContext::ParsingOutputs(_)) => ctx,
+        TxParsingContext::Signing(ctx) => {
+            let (response, mut new_ctx) = ctx.compute_signature_and_append()?;
+            new_ctx.show_spinner();
+
+            return Ok((Response::TxSignature(response), new_ctx));
+        }
+    };
+
+    Ok((Response::TxNext, new_ctx))
+}
+
+fn update_hash<T: Encode>(data: &T, hasher: &mut Blake2b_512) -> Result<(), StatusWord> {
+    let mut buf = Vec::<u8>::new();
+    encode_to(data, &mut buf);
+    hasher
+        .update(buf.as_slice())
+        .map_err(|_| StatusWord::TxHashFail)?;
+    Ok(())
+}
diff --git a/crates/app-core/src/handlers/sign_tx/summary_collector.rs b/crates/app-core/src/handlers/sign_tx/summary_collector.rs
new file mode 100644
index 0000000..8306b4f
--- /dev/null
+++ b/crates/app-core/src/handlers/sign_tx/summary_collector.rs
@@ -0,0 +1,400 @@
+/*****************************************************************************
+ *   Mintlayer Ledger App.
+ *   (c) 2025 RBB S.r.l.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *****************************************************************************/
+
+use alloc::collections::BTreeMap;
+
+use crate::StatusWord;
+use mintlayer_messages::{
+    mlcp::{
+        AccountCommand, AccountSpending, Amount, OrderAccountCommand, OutputValue, TxOutput, H256,
+    },
+    AdditionalOrderInfo, AdditionalUtxoInfo, TxInputWithAdditionalInfo,
+};
+
+#[derive(Eq, Ord, PartialEq, PartialOrd)]
+pub enum CoinOrTokenId {
+    Coin,
+    TokenId(H256),
+}
+
+#[derive(Clone, Copy, PartialEq, Eq)]
+pub enum TxType {
+    Transfer,
+    Burn,
+    Htlc,
+    CreateDelegation,
+    DelegationStake,
+    DelegationWithdrawal,
+    CreateStakePool,
+    DecommissionStakePool,
+    CreateNft,
+    CreateToken,
+    MintTokens,
+    UnmintTokens,
+    FreezeToken,
+    UnfreezeToken,
+    LockTokenSupply,
+    ChangeTokenAuthority,
+    ChangeTokenMetadataUri,
+    FillOrder,
+    FreezeOrder,
+    CreateOrder,
+    ConcludeOrder,
+    DataDeposit,
+    ComplexTransaction,
+}
+
+pub enum InputCommand {
+    AccountSpending(AccountSpending),
+    AccountCommand(AccountCommand),
+    OrderCommand(OrderAccountCommand),
+}
+
+pub struct TxSummaryCollector {
+    tx_type: Option<TxType>,
+    input_command: Option<InputCommand>,
+    total_inputs: BTreeMap<CoinOrTokenId, Amount>,
+    total_outputs: BTreeMap<CoinOrTokenId, Amount>,
+}
+
+impl TxSummaryCollector {
+    pub fn new() -> Self {
+        Self {
+            tx_type: None,
+            input_command: None,
+            total_inputs: BTreeMap::new(),
+            total_outputs: BTreeMap::new(),
+        }
+    }
+
+    pub fn input_command(&self) -> Option<&InputCommand> {
+        self.input_command.as_ref()
+    }
+
+    pub fn tx_type(&self) -> Option<TxType> {
+        self.tx_type
+    }
+
+    pub fn total_inputs(&self) -> &BTreeMap<CoinOrTokenId, Amount> {
+        &self.total_inputs
+    }
+
+    pub fn total_outputs(&self) -> &BTreeMap<CoinOrTokenId, Amount> {
+        &self.total_outputs
+    }
+
+    pub fn fees_iter(
+        &self,
+    ) -> impl Iterator<Item = Result<(&CoinOrTokenId, u128), StatusWord>> + '_ {
+        self.total_inputs()
+            .iter()
+            .map(move |(coin_or_token, amount)| {
+                let out = *self
+                    .total_outputs()
+                    .get(coin_or_token)
+                    .unwrap_or(&Amount::ZERO);
+
+                let fee = amount
+                    .into_atoms()
+                    .checked_sub(out.into_atoms())
+                    .ok_or(StatusWord::TxFeeUnderflow)?;
+
+                Ok((coin_or_token, fee))
+            })
+    }
+
+    pub fn process_output(&mut self, out: &TxOutput) -> Result<(), StatusWord> {
+        match &out {
+            TxOutput::Transfer(value, _) | TxOutput::LockThenTransfer(value, _, _) => {
+                self.tx_type = merge_tx_type(self.tx_type, TxType::Transfer);
+
+                let (coin_or_token_id, amount) = into_coin_or_token_id_and_amount(value)?;
+                self.increase_output_totals(coin_or_token_id, amount)?;
+            }
+            TxOutput::Burn(value) => {
+                self.tx_type = merge_tx_type(self.tx_type, TxType::Burn);
+
+                let (coin_or_token_id, amount) = into_coin_or_token_id_and_amount(value)?;
+                self.increase_output_totals(coin_or_token_id, amount)?;
+            }
+            TxOutput::Htlc(value, _) => {
+                self.tx_type = merge_tx_type(self.tx_type, TxType::Htlc);
+
+                let (coin_or_token_id, amount) = into_coin_or_token_id_and_amount(value)?;
+                self.increase_output_totals(coin_or_token_id, amount)?;
+            }
+            TxOutput::CreateStakePool(_, data) => {
+                self.tx_type = merge_tx_type(self.tx_type, TxType::CreateStakePool);
+
+                self.increase_output_totals(CoinOrTokenId::Coin, data.pledge)?;
+            }
+            TxOutput::ProduceBlockFromStake(_, _) => {}
+            TxOutput::DelegateStaking(amount, _) => {
+                self.tx_type = merge_tx_type(self.tx_type, TxType::DelegationStake);
+                self.increase_output_totals(CoinOrTokenId::Coin, *amount)?;
+            }
+            TxOutput::CreateDelegationId(_, _) => {
+                self.tx_type = merge_tx_type(self.tx_type, TxType::CreateDelegation);
+            }
+            TxOutput::IssueFungibleToken(_) => {
+                self.tx_type = merge_tx_type(self.tx_type, TxType::CreateToken);
+            }
+            TxOutput::DataDeposit(_) => {
+                self.tx_type = merge_tx_type(self.tx_type, TxType::DataDeposit);
+            }
+            TxOutput::IssueNft(_, _, _) => {
+                self.tx_type = merge_tx_type(self.tx_type, TxType::CreateNft);
+            }
+            TxOutput::CreateOrder(order_data) => {
+                self.tx_type = merge_tx_type(self.tx_type, TxType::CreateOrder);
+                let (coin_or_token_id, amount) =
+                    into_coin_or_token_id_and_amount(&order_data.give)?;
+                self.increase_output_totals(coin_or_token_id, amount)?;
+            }
+        }
+
+        Ok(())
+    }
+
+    pub fn process_input(&mut self, inp: &TxInputWithAdditionalInfo) -> Result<(), StatusWord> {
+        match inp {
+            TxInputWithAdditionalInfo::Utxo(_, info) => match info {
+                AdditionalUtxoInfo::UtxoWithPoolData {
+                    utxo: _,
+                    staker_balance,
+                } => {
+                    self.tx_type = merge_tx_type(self.tx_type, TxType::DecommissionStakePool);
+                    self.increase_input_totals(CoinOrTokenId::Coin, *staker_balance)?;
+                }
+                AdditionalUtxoInfo::Utxo(utxo) => {
+                    match &utxo {
+                        TxOutput::Transfer(value, _)
+                        | TxOutput::LockThenTransfer(value, _, _)
+                        | TxOutput::Htlc(value, _) => {
+                            let (coin_or_token_id, amount) =
+                                into_coin_or_token_id_and_amount(value)?;
+                            self.increase_input_totals(coin_or_token_id, amount)?;
+                        }
+                        TxOutput::Burn(_)
+                        | TxOutput::ProduceBlockFromStake(_, _)
+                        | TxOutput::CreateDelegationId(_, _)
+                        | TxOutput::IssueFungibleToken(_)
+                        | TxOutput::DataDeposit(_)
+                        | TxOutput::DelegateStaking(_, _)
+                        | TxOutput::CreateOrder(_) => return Err(StatusWord::TxInvalidInputUtxo),
+                        TxOutput::CreateStakePool(_, data) => {
+                            self.increase_input_totals(CoinOrTokenId::Coin, data.pledge)?;
+                        }
+                        TxOutput::IssueNft(nft_id, _, _) => {
+                            self.increase_input_totals(
+                                CoinOrTokenId::TokenId(*nft_id.hash()),
+                                Amount::from_atoms(1),
+                            )?;
+                        }
+                    };
+                }
+            },
+            TxInputWithAdditionalInfo::Account(acc) => {
+                self.input_command = Some(InputCommand::AccountSpending(acc.spending.clone()));
+                match acc.spending {
+                    AccountSpending::DelegationBalance(_, amount) => {
+                        self.tx_type = merge_tx_type(self.tx_type, TxType::DelegationWithdrawal);
+                        self.increase_input_totals(CoinOrTokenId::Coin, amount)?;
+                    }
+                }
+            }
+            TxInputWithAdditionalInfo::AccountCommand(_, cmd) => {
+                self.input_command = Some(InputCommand::AccountCommand(cmd.clone()));
+                match cmd {
+                    AccountCommand::MintTokens(token_id, amount) => {
+                        self.tx_type = merge_tx_type(self.tx_type, TxType::MintTokens);
+                        self.increase_input_totals(
+                            CoinOrTokenId::TokenId(*token_id.hash()),
+                            *amount,
+                        )?;
+                    }
+                    AccountCommand::ConcludeOrder(_) | AccountCommand::FillOrder(_, _, _) => {
+                        return Err(StatusWord::OrdersV0NotSupported)
+                    }
+                    AccountCommand::UnmintTokens(_) => {
+                        self.tx_type = merge_tx_type(self.tx_type, TxType::UnmintTokens);
+                    }
+                    AccountCommand::LockTokenSupply(_) => {
+                        self.tx_type = merge_tx_type(self.tx_type, TxType::LockTokenSupply);
+                    }
+                    AccountCommand::FreezeToken(_, _) => {
+                        self.tx_type = merge_tx_type(self.tx_type, TxType::FreezeToken);
+                    }
+                    AccountCommand::UnfreezeToken(_) => {
+                        self.tx_type = merge_tx_type(self.tx_type, TxType::UnfreezeToken);
+                    }
+                    AccountCommand::ChangeTokenAuthority(_, _) => {
+                        self.tx_type = merge_tx_type(self.tx_type, TxType::ChangeTokenAuthority);
+                    }
+                    AccountCommand::ChangeTokenMetadataUri(_, _) => {
+                        self.tx_type = merge_tx_type(self.tx_type, TxType::ChangeTokenMetadataUri);
+                    }
+                }
+            }
+            TxInputWithAdditionalInfo::OrderAccountCommand(
+                cmd,
+                AdditionalOrderInfo {
+                    initially_asked,
+                    initially_given,
+                    ask_balance,
+                    give_balance,
+                },
+            ) => {
+                self.input_command = Some(InputCommand::OrderCommand(cmd.clone()));
+                match cmd {
+                    OrderAccountCommand::FillOrder(_, fill_amount) => {
+                        let (fill_coin_or_token_id, asked_amount) =
+                            into_coin_or_token_id_and_amount(initially_asked)?;
+                        let (given_coin_or_token_id, given_amount) =
+                            into_coin_or_token_id_and_amount(initially_given)?;
+
+                        self.increase_output_totals(fill_coin_or_token_id, *fill_amount)?;
+
+                        let atoms = given_amount
+                            .into_atoms()
+                            .checked_mul(fill_amount.into_atoms())
+                            .ok_or(StatusWord::TxNumericOperationFail)?
+                            .checked_div(asked_amount.into_atoms())
+                            .ok_or(StatusWord::TxNumericOperationFail)?;
+                        let amount = Amount::from_atoms(atoms);
+                        self.increase_input_totals(given_coin_or_token_id, amount)?;
+
+                        self.tx_type = merge_tx_type(self.tx_type, TxType::FillOrder);
+                    }
+                    OrderAccountCommand::ConcludeOrder(_) => {
+                        let (coin_or_token_id, _) =
+                            into_coin_or_token_id_and_amount(initially_asked)?;
+                        self.increase_input_totals(coin_or_token_id, *ask_balance)?;
+
+                        let (coin_or_token_id, _) =
+                            into_coin_or_token_id_and_amount(initially_given)?;
+                        self.increase_input_totals(coin_or_token_id, *give_balance)?;
+
+                        self.tx_type = merge_tx_type(self.tx_type, TxType::ConcludeOrder);
+                    }
+                    OrderAccountCommand::FreezeOrder(_) => {
+                        self.tx_type = merge_tx_type(self.tx_type, TxType::FreezeOrder);
+                    }
+                }
+            }
+        };
+
+        Ok(())
+    }
+
+    fn increase_input_totals(
+        &mut self,
+        key: CoinOrTokenId,
+        amount: Amount,
+    ) -> Result<(), StatusWord> {
+        let total = self
+            .total_inputs
+            .entry(key)
+            .or_insert(Amount::from_atoms(0));
+        let new_total = total
+            .into_atoms()
+            .checked_add(amount.into_atoms())
+            .ok_or(StatusWord::TxNumericOperationFail)?;
+        *total = Amount::from_atoms(new_total);
+        Ok(())
+    }
+
+    fn increase_output_totals(
+        &mut self,
+        key: CoinOrTokenId,
+        amount: Amount,
+    ) -> Result<(), StatusWord> {
+        let total = self
+            .total_outputs
+            .entry(key)
+            .or_insert(Amount::from_atoms(0));
+        let new_total = total
+            .into_atoms()
+            .checked_add(amount.into_atoms())
+            .ok_or(StatusWord::TxNumericOperationFail)?;
+        *total = Amount::from_atoms(new_total);
+        Ok(())
+    }
+}
+
+fn merge_tx_type(tx_type: Option<TxType>, new_type: TxType) -> Option<TxType> {
+    match tx_type {
+        None => Some(new_type),
+        // Transfers are a lower priority (as they can be change outputs) so keep the previous type
+        Some(_) if new_type == TxType::Transfer => tx_type,
+        Some(_) => Some(TxType::ComplexTransaction),
+    }
+}
+
+fn into_coin_or_token_id_and_amount(
+    value: &OutputValue,
+) -> Result<(CoinOrTokenId, Amount), StatusWord> {
+    match value {
+        OutputValue::Coin(amount) => Ok((CoinOrTokenId::Coin, *amount)),
+        OutputValue::TokenV1(token_id, amount) => {
+            Ok((CoinOrTokenId::TokenId(*token_id.hash()), *amount))
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use alloc::vec::Vec;
+
+    use crate::testing::prelude::*;
+
+    use mintlayer_messages::mlcp;
+
+    use super::*;
+
+    // TODO: this is a sample test, need to expand it and add more tests
+    #[test_item]
+    fn sample_test() {
+        let mut collector = TxSummaryCollector::new();
+
+        collector
+            .process_input(&TxInputWithAdditionalInfo::Utxo(
+                mlcp::UtxoOutPoint::new(
+                    mlcp::OutPointSourceId::Transaction(mlcp::Id::new(mlcp::H256::zero())),
+                    0,
+                ),
+                AdditionalUtxoInfo::Utxo(mlcp::TxOutput::Transfer(
+                    mlcp::OutputValue::Coin(mlcp::Amount::from_atoms(123)),
+                    mlcp::Destination::AnyoneCanSpend,
+                )),
+            ))
+            .unwrap();
+
+        collector
+            .process_output(&mlcp::TxOutput::Transfer(
+                mlcp::OutputValue::Coin(mlcp::Amount::from_atoms(120)),
+                mlcp::Destination::AnyoneCanSpend,
+            ))
+            .unwrap();
+
+        let fees = collector
+            .fees_iter()
+            .collect::<Result<Vec<_>, _>>()
+            .unwrap();
+        assert!(fees == [(&CoinOrTokenId::Coin, 3)]);
+    }
+}
diff --git a/crates/app-core/src/handlers/utils.rs b/crates/app-core/src/handlers/utils.rs
new file mode 100644
index 0000000..d43404b
--- /dev/null
+++ b/crates/app-core/src/handlers/utils.rs
@@ -0,0 +1,32 @@
+/*****************************************************************************
+ *   Mintlayer Ledger App.
+ *   (c) 2025 RBB S.r.l.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *****************************************************************************/
+
+use crate::StatusWord;
+
+use mintlayer_messages::mlcp::H256;
+
+use ledger_device_sdk::hash::{blake2::Blake2b_512, HashInit};
+
+pub fn mintlayer_hash(data: &[u8]) -> Result<H256, StatusWord> {
+    let mut hasher = Blake2b_512::new();
+    let mut message_hash: [u8; 64] = [0u8; 64];
+    hasher
+        .hash(data, &mut message_hash)
+        .map_err(|_| StatusWord::TxHashFail)?;
+
+    Ok(H256::from_slice(&message_hash[..32]))
+}
diff --git a/crates/app-core/src/lib.rs b/crates/app-core/src/lib.rs
new file mode 100644
index 0000000..19ffc16
--- /dev/null
+++ b/crates/app-core/src/lib.rs
@@ -0,0 +1,351 @@
+/*****************************************************************************
+ *
+ *   Mintlayer Ledger App.
+ *   (c) 2023 Ledger SAS.
+ *   (c) 2025 RBB S.r.l.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *****************************************************************************/
+
+#![no_std]
+// The following is needed to be able to generate a test executable that can be run on speculos.
+// 1. Disable the generation of `fn main`.
+#![cfg_attr(test, no_main)]
+// 2. "custom_test_frameworks" must be enabled to be able to specify the custom runner and use
+// the `#[test_case]` attribute (used internally by `testmacro::test_item`).
+#![feature(custom_test_frameworks)]
+// 3. Specify the custom test runner. All test cases collected by `#[test_case]` will be passed
+// to this function. In particular, `sdk_test_runner` will loop over the array of test cases and:
+// a) fix references stored inside the test case via pic_rs/pic;
+// b) invoke the closure associated with the test case.
+#![test_runner(ledger_device_sdk::testing::sdk_test_runner)]
+// 4. This will put `fn test_main` at the test crate's root, which will call the runner that we've
+// specified above; we'll call it from our `sample_main`.
+#![reexport_test_harness_main = "test_main"]
+
+mod app_ui {
+    pub mod address;
+    pub mod menu;
+    pub mod sign;
+    pub mod utils;
+}
+mod handlers {
+    pub mod get_public_key;
+    pub mod sign_message;
+    pub mod sign_tx;
+    pub mod utils;
+}
+
+mod errors;
+#[cfg(test)]
+mod testing;
+
+// Required for using String, Vec, format!...
+extern crate alloc;
+use alloc::vec::Vec;
+
+use ledger_device_sdk::{
+    io::{ApduHeader, Comm, Reply},
+    nbgl::{init_comm, NbglHomeAndSettings, NbglReviewStatus, NbglStreamingReview, StatusType},
+};
+
+use app_ui::menu::ui_menu_main;
+use errors::sdk_err_to_status;
+use handlers::{
+    get_public_key::handle_get_public_key,
+    sign_message::{handle_sign_message, setup_sign_message, SignMessageContext},
+    sign_tx::{handle_sign_tx, setup_sign_tx, TxParsingContext},
+};
+use mintlayer_messages::{
+    decode_all, encode, Ins, PubKeyP1, Response, SignP1, StatusWord, APDU_CLASS, MAX_ADPU_DATA_LEN,
+    P2_DONE, P2_MORE,
+};
+
+pub const MAX_BUFFER_LEN: usize = 4 * MAX_ADPU_DATA_LEN;
+
+/// Represents a fully assembled Low-Level Instruction.
+/// Contains the aggregated data from one or more APDUs (if P2 indicated more data).
+pub struct RawInstruction {
+    pub ins: u8,
+    pub p1: u8,
+    pub data: Vec<u8>,
+}
+
+pub enum ReceiveInstructionResult {
+    ExpectingNextChunk,
+    Instruction(RawInstruction),
+}
+
+/// State machine to handle APDU packet chaining (P2_MORE / P2_DONE).
+pub struct ApduTransport {
+    buffer: Vec<u8>,
+    current_ins: Option<u8>,
+    current_p1: Option<u8>,
+}
+
+impl Default for ApduTransport {
+    fn default() -> Self {
+        Self {
+            buffer: Vec::with_capacity(u8::MAX as usize), // Pre-alloc for at least one standard APDU
+            current_ins: None,
+            current_p1: None,
+        }
+    }
+}
+
+impl ApduTransport {
+    /// Reads the next APDU from `comm`.
+    ///
+    /// - If `P2 == P2_MORE`, it accumulates the data and returns `Ok(None)`.
+    ///   It also sends a `StatusWord::Ok` to the host to request the next chunk.
+    /// - If `P2 == P2_DONE`, it finishes accumulation and returns `Ok(Some(RawInstruction))`.
+    pub fn receive(&mut self, comm: &mut Comm) -> Result<ReceiveInstructionResult, StatusWord> {
+        let header: ApduHeader = comm.next_command();
+        let data = comm.get_data().map_err(sdk_err_to_status)?;
+
+        // Validation: If we are in the middle of a stream, INS and P1 must match
+        if let (Some(curr_ins), Some(curr_p1)) = (self.current_ins, self.current_p1) {
+            if header.ins != curr_ins {
+                self.reset();
+                return Err(StatusWord::WrongInstruction);
+            }
+            if header.p1 != curr_p1 {
+                self.reset();
+                return Err(StatusWord::WrongP1P2);
+            }
+        } else {
+            // New command sequence starting
+            self.current_ins = Some(header.ins);
+            self.current_p1 = Some(header.p1);
+        }
+
+        if self.buffer.len() + data.len() > MAX_BUFFER_LEN {
+            self.reset();
+            return Err(StatusWord::MaxBufferLenExceeded);
+        }
+
+        self.buffer.extend_from_slice(data);
+
+        match header.p2 {
+            P2_MORE => Ok(ReceiveInstructionResult::ExpectingNextChunk),
+            P2_DONE => {
+                // Construct the full instruction
+                let raw = RawInstruction {
+                    ins: header.ins,
+                    p1: header.p1,
+                    data: core::mem::take(&mut self.buffer),
+                };
+                self.reset();
+                Ok(ReceiveInstructionResult::Instruction(raw))
+            }
+            _ => {
+                self.reset();
+                Err(StatusWord::WrongP1P2)
+            }
+        }
+    }
+
+    fn reset(&mut self) {
+        self.buffer.clear();
+        self.current_ins = None;
+        self.current_p1 = None;
+    }
+}
+
+pub enum Command {
+    GetPubkey { p1: PubKeyP1, data: Vec<u8> },
+    SignTx { p1: SignP1, data: Vec<u8> },
+    SignMessage { p1: SignP1, data: Vec<u8> },
+    Ping,
+}
+
+impl TryFrom<RawInstruction> for Command {
+    type Error = StatusWord;
+
+    fn try_from(raw: RawInstruction) -> Result<Self, Self::Error> {
+        match raw.ins {
+            Ins::PUB_KEY => {
+                let p1: PubKeyP1 = raw.p1.try_into()?;
+                Ok(Command::GetPubkey { p1, data: raw.data })
+            }
+            Ins::SIGN_TX => {
+                let p1: SignP1 = raw.p1.try_into()?;
+                Ok(Command::SignTx { p1, data: raw.data })
+            }
+            Ins::SIGN_MSG => {
+                let p1: SignP1 = raw.p1.try_into()?;
+                Ok(Command::SignMessage { p1, data: raw.data })
+            }
+            Ins::PING => Ok(Command::Ping),
+            _ => Err(StatusWord::InsNotSupported),
+        }
+    }
+}
+
+fn show_status_and_home_if_needed(cmd: &Command, ctx: &mut AppContext, status: &StatusWord) {
+    let (show_status, status_type) = match (cmd, status) {
+        (Command::GetPubkey { p1, .. }, StatusWord::Deny | StatusWord::Ok) if p1.display() => {
+            (true, StatusType::Address)
+        }
+        (Command::SignTx { .. }, StatusWord::Deny | StatusWord::Ok) if ctx.finished() => {
+            (true, StatusType::Transaction)
+        }
+        (Command::SignMessage { .. }, StatusWord::Deny | StatusWord::Ok) if ctx.finished() => {
+            (true, StatusType::Message)
+        }
+        (Command::Ping, StatusWord::Ok) => {
+            ctx.home.show_and_return();
+            return;
+        }
+        (_, _) => (false, StatusType::Transaction), // Default fallback
+    };
+
+    if show_status {
+        let success = *status == StatusWord::Ok;
+        NbglReviewStatus::new()
+            .status_type(status_type)
+            .show(success);
+
+        // call home.show_and_return() to show home and setting screen
+        ctx.home.show_and_return();
+    }
+}
+
+pub enum DataContext {
+    TxContext(TxParsingContext, NbglStreamingReview),
+    SignMessageContext(SignMessageContext),
+}
+
+struct AppContext {
+    pub data_context: Option<DataContext>,
+    pub home: NbglHomeAndSettings,
+}
+
+impl AppContext {
+    fn new() -> Self {
+        Self {
+            data_context: None,
+            home: Default::default(),
+        }
+    }
+
+    fn finished(&self) -> bool {
+        self.data_context.as_ref().is_some_and(|ctx| match ctx {
+            DataContext::SignMessageContext(ctx) => ctx.finished(),
+            DataContext::TxContext(ctx, _) => ctx.finished(),
+        })
+    }
+}
+
+pub fn mintlayer_main() {
+    let mut comm = Comm::new().set_expected_cla(APDU_CLASS);
+
+    let mut tx_ctx = AppContext::new();
+
+    // Initialize reference to Comm instance for NBGL API calls.
+    init_comm(&mut comm);
+    tx_ctx.home = ui_menu_main();
+    tx_ctx.home.show_and_return();
+
+    let mut transport = ApduTransport::default();
+
+    loop {
+        let raw_instruction = match transport.receive(&mut comm) {
+            Ok(ReceiveInstructionResult::Instruction(raw)) => raw,
+            Ok(ReceiveInstructionResult::ExpectingNextChunk) => {
+                // Signal host that we received the chunk and are waiting for more
+                comm.append(&encode(Response::ExpectingNextChunk));
+                comm.reply(Reply(StatusWord::Ok as u16));
+                continue; // Waiting for more chunks, loop around
+            }
+            Err(sw) => {
+                comm.reply(Reply(sw as u16));
+                continue;
+            }
+        };
+
+        let command = match Command::try_from(raw_instruction) {
+            Ok(cmd) => cmd,
+            Err(sw) => {
+                comm.reply(Reply(sw as u16));
+                continue;
+            }
+        };
+
+        let status = match handle_command(&command, &mut tx_ctx) {
+            Ok(response) => {
+                comm.append(&encode(response));
+                comm.reply_ok();
+                StatusWord::Ok
+            }
+            Err(sw) => {
+                comm.reply(Reply(sw as u16));
+                sw
+            }
+        };
+
+        show_status_and_home_if_needed(&command, &mut tx_ctx, &status);
+    }
+}
+
+fn handle_command(cmd: &Command, ctx: &mut AppContext) -> Result<Response, StatusWord> {
+    match cmd {
+        Command::GetPubkey { p1, data } => {
+            let req = decode_all(data).ok_or(StatusWord::DeserializeFail)?;
+            handle_get_public_key(req, p1.display()).map(Response::PublicKey)
+        }
+        Command::SignTx { p1, data } => match p1 {
+            SignP1::Start => {
+                let req = decode_all(data).ok_or(StatusWord::DeserializeFail)?;
+                ctx.data_context = Some(setup_sign_tx(req)?);
+                Ok(Response::TxSetup)
+            }
+            SignP1::Next => {
+                let (mut tx_ctx, mut review) = match ctx.data_context.take() {
+                    Some(DataContext::TxContext(c, r)) => (c, r),
+                    _ => return Err(StatusWord::WrongContext),
+                };
+
+                let req = decode_all(data).ok_or(StatusWord::DeserializeFail)?;
+
+                tx_ctx.show_spinner();
+
+                match handle_sign_tx(req, tx_ctx, &mut review) {
+                    Ok((response, new_ctx)) => {
+                        ctx.data_context = Some(DataContext::TxContext(new_ctx, review));
+                        Ok(response)
+                    }
+                    Err(sw) => {
+                        ctx.data_context = None;
+                        Err(sw)
+                    }
+                }
+            }
+        },
+        Command::SignMessage { p1, data } => match p1 {
+            SignP1::Start => {
+                let req = decode_all(data).ok_or(StatusWord::DeserializeFail)?;
+                ctx.data_context = Some(setup_sign_message(req));
+                Ok(Response::MessageSetup)
+            }
+            SignP1::Next => {
+                let msg_ctx = match ctx.data_context.as_mut() {
+                    Some(DataContext::SignMessageContext(ctx)) => ctx,
+                    _ => return Err(StatusWord::WrongContext),
+                };
+                handle_sign_message(data, msg_ctx).map(Response::MessageSignature)
+            }
+        },
+        Command::Ping => Ok(Response::Pong),
+    }
+}
diff --git a/crates/app-core/src/testing.rs b/crates/app-core/src/testing.rs
new file mode 100644
index 0000000..8b75de4
--- /dev/null
+++ b/crates/app-core/src/testing.rs
@@ -0,0 +1,47 @@
+/*****************************************************************************
+ *
+ *   Mintlayer Ledger App.
+ *   (c) 2023 Ledger SAS.
+ *   (c) 2026 RBB S.r.l.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *****************************************************************************/
+
+use alloc::{borrow::ToOwned as _, format};
+
+pub mod prelude {
+    // testmacro::test_item expects `TestType` to be imported.
+    pub use ledger_device_sdk::testing::TestType;
+
+    pub use testmacro::test_item;
+}
+
+#[no_mangle]
+extern "C" fn sample_main() {
+    crate::test_main();
+    ledger_device_sdk::exit_app(0);
+}
+
+#[panic_handler]
+fn handle_panic(info: &core::panic::PanicInfo) -> ! {
+    ledger_device_sdk::error!(
+        "Panic occurred at {}: {}",
+        info.location().map_or_else(
+            || "???".to_owned(),
+            |loc| format!("{}:{}", loc.file(), loc.line())
+        ),
+        info.message(),
+    );
+
+    ledger_device_sdk::exit_app(1);
+}
diff --git a/crates/messages/Cargo.toml b/crates/messages/Cargo.toml
new file mode 100644
index 0000000..03edaeb
--- /dev/null
+++ b/crates/messages/Cargo.toml
@@ -0,0 +1,20 @@
+[package]
+name = "mintlayer-messages"
+version.workspace = true
+edition = "2024"
+
+[dependencies]
+derive_more = { workspace = true, default-features = false, features = ["display"]}
+num_enum = { workspace = true, default-features = false }
+# Note: normally we would enable the "chain-error" feature of parity-scale-codec to make decode errors
+# more informative. But in the Ledger app we never examine or even print those errors, so enabling this
+# feature would only increase the size of the binary and make the app use more stack during decoding.
+parity-scale-codec = { workspace = true, default-features = false, features = ["derive"] }
+
+mintlayer-core-primitives.workspace = true
+
+[lib]
+# Note: this crate doesn't have unit tests at the moment. If we ever need them, a custom runner
+# has to be set up the same way it's done in `mintlayer-app-core`. For now we just disable tests
+# completely to prevent Cargo from producing an uncompilable test binary.
+test = false
diff --git a/crates/messages/src/lib.rs b/crates/messages/src/lib.rs
new file mode 100644
index 0000000..7bf1498
--- /dev/null
+++ b/crates/messages/src/lib.rs
@@ -0,0 +1,503 @@
+/*****************************************************************************
+ *   Mintlayer Ledger App.
+ *   (c) 2025 RBB S.r.l.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *****************************************************************************/
+
+#![no_std]
+
+// Required for using String, Vec, format!...
+extern crate alloc;
+
+use alloc::{boxed::Box, vec::Vec};
+use core::iter::ExactSizeIterator;
+
+use derive_more::Display;
+use num_enum::{IntoPrimitive, TryFromPrimitive};
+use parity_scale_codec::{Decode, DecodeAll};
+
+pub use mintlayer_core_primitives as mlcp;
+pub use parity_scale_codec::Encode;
+
+pub const APDU_CLASS: u8 = 0xE1;
+pub const MAX_ADPU_DATA_LEN: usize = u8::MAX as usize;
+
+// P2 is used to indicate APDU chunking.
+// `P2_DONE` marks the final chunk, while `P2_MORE` indicates that more chunks follow.
+pub const P2_DONE: u8 = 0x00;
+pub const P2_MORE: u8 = 0x80;
+
+fn wrong_p1p2(_: u8) -> StatusWord {
+    StatusWord::WrongP1P2
+}
+
+#[derive(Debug, Clone, Copy, Eq, PartialEq, TryFromPrimitive, IntoPrimitive)]
+#[num_enum(error_type(name = StatusWord, constructor = wrong_p1p2))]
+#[repr(u8)]
+pub enum PubKeyP1 {
+    NoDisplayAddress = 0,
+    DisplayAddress = 1,
+}
+
+impl PubKeyP1 {
+    pub fn display(&self) -> bool {
+        *self == Self::DisplayAddress
+    }
+}
+
+pub struct Ins {}
+
+impl Ins {
+    pub const PUB_KEY: u8 = 0x00;
+    pub const SIGN_TX: u8 = 0x01;
+    pub const SIGN_MSG: u8 = 0x02;
+    pub const PING: u8 = 0x03;
+}
+
+#[derive(Debug, Clone, Copy, Eq, PartialEq, TryFromPrimitive, IntoPrimitive)]
+#[num_enum(error_type(name = StatusWord, constructor = wrong_p1p2))]
+#[repr(u8)]
+pub enum SignP1 {
+    Start = 0,
+    Next = 1,
+}
+
+#[derive(Debug, Clone, Copy, Eq, PartialEq, TryFromPrimitive, IntoPrimitive)]
+#[num_enum(error_type(name = StatusWord, constructor = wrong_p1p2))]
+#[repr(u8)]
+pub enum PingP1 {
+    Start = 0,
+}
+
+#[derive(Encode, Decode)]
+pub struct PublicKeyReq {
+    pub coin_type: CoinType,
+    pub path: Bip32Path,
+}
+
+#[derive(Encode, Decode)]
+pub struct SignMessageReq {
+    pub coin: CoinType,
+    pub addr_type: AddrType,
+    pub path: Bip32Path,
+}
+
+#[derive(Encode, Decode)]
+pub enum SignTxReq {
+    Input(Box<TxInputReq>),
+    InputCommitment(Box<mlcp::SighashInputCommitment>),
+    Output(Box<TxOutputReq>),
+    NextSignature,
+}
+
+#[derive(Encode, Decode)]
+pub struct TxMetadataV1Req {
+    pub num_inputs: u32,
+    pub num_outputs: u32,
+}
+
+#[derive(Encode, Decode)]
+pub enum TxMetadataVersionReq {
+    V1(TxMetadataV1Req),
+}
+
+#[derive(Encode, Decode)]
+pub struct TxMetadataReq {
+    pub coin: CoinType,
+    pub version: TxMetadataVersionReq,
+}
+
+#[derive(Encode, Decode)]
+pub struct TxInputReq {
+    pub addresses: Vec<InputAddressPath>,
+    pub inp: TxInputWithAdditionalInfo,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Encode, Decode)]
+pub struct AdditionalOrderInfo {
+    pub initially_asked: mlcp::OutputValue,
+    pub initially_given: mlcp::OutputValue,
+    pub ask_balance: mlcp::Amount,
+    pub give_balance: mlcp::Amount,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Encode, Decode)]
+pub enum AdditionalUtxoInfo {
+    Utxo(mlcp::TxOutput),
+    UtxoWithPoolData {
+        utxo: mlcp::TxOutput,
+        staker_balance: mlcp::Amount,
+    },
+}
+
+impl From<AdditionalUtxoInfo> for mlcp::SighashInputCommitment {
+    fn from(value: AdditionalUtxoInfo) -> Self {
+        match value {
+            AdditionalUtxoInfo::Utxo(output) => mlcp::SighashInputCommitment::Utxo(output),
+            AdditionalUtxoInfo::UtxoWithPoolData {
+                utxo,
+                staker_balance,
+            } => mlcp::SighashInputCommitment::ProduceBlockFromStakeUtxo {
+                utxo,
+                staker_balance,
+            },
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Encode, Decode)]
+pub enum TxInputWithAdditionalInfo {
+    #[codec(index = 0)]
+    Utxo(mlcp::UtxoOutPoint, AdditionalUtxoInfo),
+
+    #[codec(index = 1)]
+    Account(mlcp::AccountOutPoint),
+
+    #[codec(index = 2)]
+    AccountCommand(mlcp::AccountNonce, mlcp::AccountCommand),
+
+    #[codec(index = 3)]
+    OrderAccountCommand(mlcp::OrderAccountCommand, AdditionalOrderInfo),
+}
+
+impl TxInputWithAdditionalInfo {
+    pub fn into_input_and_commitment(self) -> (mlcp::TxInput, mlcp::SighashInputCommitment) {
+        match self {
+            TxInputWithAdditionalInfo::Utxo(utxo, info) => (mlcp::TxInput::Utxo(utxo), info.into()),
+            TxInputWithAdditionalInfo::Account(acc) => (
+                mlcp::TxInput::Account(acc),
+                mlcp::SighashInputCommitment::None,
+            ),
+            TxInputWithAdditionalInfo::AccountCommand(nonce, cmd) => (
+                mlcp::TxInput::AccountCommand(nonce, cmd),
+                mlcp::SighashInputCommitment::None,
+            ),
+            TxInputWithAdditionalInfo::OrderAccountCommand(cmd, info) => {
+                let commitment = match &cmd {
+                    mlcp::OrderAccountCommand::FillOrder(_, _) => {
+                        mlcp::SighashInputCommitment::FillOrderAccountCommand {
+                            initially_asked: info.initially_asked,
+                            initially_given: info.initially_given,
+                        }
+                    }
+                    mlcp::OrderAccountCommand::ConcludeOrder(_) => {
+                        mlcp::SighashInputCommitment::ConcludeOrderAccountCommand {
+                            initially_asked: info.initially_asked,
+                            initially_given: info.initially_given,
+                            ask_balance: info.ask_balance,
+                            give_balance: info.give_balance,
+                        }
+                    }
+                    mlcp::OrderAccountCommand::FreezeOrder(_) => mlcp::SighashInputCommitment::None,
+                };
+                (mlcp::TxInput::OrderAccountCommand(cmd), commitment)
+            }
+        }
+    }
+}
+
+#[derive(Encode, Decode)]
+pub struct TxOutputReq {
+    pub out: mlcp::TxOutput,
+}
+
+#[derive(Encode, Decode, Clone, Copy, Debug, Eq, PartialEq, IntoPrimitive)]
+#[repr(u8)]
+pub enum CoinType {
+    Mainnet = 0,
+    Testnet = 1,
+    Regtest = 2,
+    Signet = 3,
+}
+
+impl From<CoinType> for mlcp::CoinType {
+    fn from(value: CoinType) -> Self {
+        match value {
+            CoinType::Mainnet => Self::Mainnet,
+            CoinType::Testnet => Self::Testnet,
+            CoinType::Regtest => Self::Regtest,
+            CoinType::Signet => Self::Signet,
+        }
+    }
+}
+
+#[repr(u8)]
+#[derive(Encode, Decode, Clone, Copy, IntoPrimitive)]
+pub enum AddrType {
+    PublicKey = 0,
+    PublicKeyHash = 1,
+}
+
+/// BIP32 path stored as an array of [`u32`].
+#[derive(Default, Encode, Decode, Clone)]
+pub struct Bip32Path(pub Vec<u32>);
+
+impl AsRef<[u32]> for Bip32Path {
+    fn as_ref(&self) -> &[u32] {
+        &self.0
+    }
+}
+
+/// Address path to be signed for an input
+#[derive(Encode, Decode)]
+pub struct InputAddressPath {
+    pub path: Bip32Path,
+    pub multisig_idx: Option<u32>,
+}
+
+#[derive(Encode, Decode)]
+pub struct PublicKey(pub [u8; 65]);
+
+#[derive(Encode, Decode)]
+pub struct ChainCode(pub [u8; 32]);
+
+#[derive(Encode, Decode)]
+pub struct GetPublicKeyResponse {
+    pub public_key: PublicKey,
+    pub chain_code: ChainCode,
+}
+
+#[derive(Encode, Decode)]
+pub struct SignatureResponse(pub [u8; 64]);
+
+#[derive(Encode, Decode)]
+pub struct TxInputSignatureResponse {
+    pub signature: SignatureResponse,
+    pub input_idx: u32,
+    pub multisig_idx: Option<u32>,
+    pub has_next: bool,
+}
+
+#[derive(Encode, Decode)]
+pub struct MsgSignatureResponse {
+    pub signature: SignatureResponse,
+}
+
+#[derive(Encode, Decode)]
+pub enum Response {
+    #[codec(index = 0)]
+    ExpectingNextChunk,
+    #[codec(index = 1)]
+    PublicKey(GetPublicKeyResponse),
+    #[codec(index = 2)]
+    TxSetup,
+    #[codec(index = 3)]
+    TxNext,
+    #[codec(index = 4)]
+    TxSignature(TxInputSignatureResponse),
+    #[codec(index = 5)]
+    MessageSetup,
+    #[codec(index = 6)]
+    MessageSignature(MsgSignatureResponse),
+    #[codec(index = 7)]
+    Pong,
+}
+
+pub fn encode<T: Encode>(t: T) -> Vec<u8> {
+    t.encode()
+}
+
+pub fn encode_to<T: Encode>(t: T, buf: &mut Vec<u8>) {
+    t.encode_to(buf)
+}
+
+pub fn decode_all<T: Decode>(mut bytes: &[u8]) -> Option<T> {
+    T::decode_all(&mut bytes).ok()
+}
+
+pub fn encode_as_compact(num: u32) -> Vec<u8> {
+    parity_scale_codec::Compact::<u32>::encode(&num.into())
+}
+
+/// This represents an APDU used in communication with Mintlayer Ledger app.
+///
+/// Note that the class byte is not present here, because it's the same for all our APDUs.
+///
+/// Also, we don't have the second parameter byte here either, because its meaning is the same
+/// across all APDUs - it specifies whether this APDU represents the last chunk of the instruction.
+pub struct Apdu<'a> {
+    instruction_byte: u8,
+    param1_byte: u8,
+    command_data: &'a [u8],
+    is_last_chunk: bool,
+}
+
+impl<'a> Apdu<'a> {
+    /// Create an APDU with data; this will fail if the data length exceeds the allowed maximum.
+    pub fn new_with_data(
+        instruction_byte: u8,
+        param1_byte: u8,
+        command_data: &'a [u8],
+    ) -> Option<Self> {
+        (command_data.len() <= MAX_ADPU_DATA_LEN).then_some(Self {
+            instruction_byte,
+            param1_byte,
+            command_data,
+            is_last_chunk: true,
+        })
+    }
+
+    /// Returns an ExactSizeIterator of APDUs by chunking the data to MAX_ADPU_DATA_LEN
+    pub fn new_chunks(
+        instruction_byte: u8,
+        param1_byte: u8,
+        data: &'a [u8],
+    ) -> impl ExactSizeIterator<Item = Self> {
+        let chunk_iter = data.chunks(MAX_ADPU_DATA_LEN);
+        let last_chunk_idx = chunk_iter.len() - 1;
+
+        chunk_iter.enumerate().map(move |(chunk_idx, chunk)| Self {
+            instruction_byte,
+            param1_byte,
+            command_data: chunk,
+            is_last_chunk: chunk_idx == last_chunk_idx,
+        })
+    }
+
+    pub fn is_last(&self) -> bool {
+        self.is_last_chunk
+    }
+
+    /// The number of bytes that will be written by `write_bytes`.
+    ///
+    /// This can be used to reserve the required capacity in the destination collection
+    /// (note that `Extend::extend_reserve is` still nightly-only, so we can't use it).
+    pub fn bytes_count(&self) -> usize {
+        // class, instruction, param1 and param2 bytes, then 1 byte for data length, then the
+        // data itself.
+        5 + self.command_data.len()
+    }
+
+    pub fn write_bytes(&self, collection: &mut impl core::iter::Extend<u8>) {
+        let param2_byte = if self.is_last_chunk { P2_DONE } else { P2_MORE };
+
+        collection.extend([
+            APDU_CLASS,
+            self.instruction_byte,
+            self.param1_byte,
+            param2_byte,
+        ]);
+        // Should be true by construction
+        assert!(self.command_data.len() <= u8::MAX as usize);
+        collection.extend(core::iter::once(self.command_data.len() as u8));
+        collection.extend(self.command_data.iter().copied());
+    }
+}
+
+/// Application status words.
+#[repr(u16)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Display, IntoPrimitive, TryFromPrimitive)]
+pub enum StatusWord {
+    // Standard Ledger APDU Codes
+    #[display("Success")]
+    Ok = 0x9000,
+    #[display("Nothing received")]
+    NothingReceived = 0x6982,
+    #[display("User cancelled")]
+    Deny = 0x6985,
+    #[display("CLA not supported")]
+    ClaNotSupported = 0x6E00,
+    #[display("Instruction not supported")]
+    InsNotSupported = 0x6E01,
+    #[display("Wrong P1/P2 parameters")]
+    WrongP1P2 = 0x6E02,
+    #[display("Wrong APDU length")]
+    WrongApduLength = 0x6E03,
+    #[display("Unknown")]
+    Unknown = 0x6D00,
+    #[display("Panic")]
+    Panic = 0xE000,
+    #[display("Device locked")]
+    DeviceLocked = 0x5515,
+
+    // App Specific Errors (0xB...)
+    #[display("Transaction display failed")]
+    TxDisplayFail = 0xB000,
+    #[display("Transaction lock time value is invalid")]
+    TxLockTimeInvalid = 0xB001,
+    #[display("Transaction wrong length")]
+    TxWrongLength = 0xB002,
+    #[display("Transaction hashing failed")]
+    TxHashFail = 0xB003,
+    #[display("Transaction address failed")]
+    TxAddressFail = 0xB004,
+    #[display("Different instruction than expected")]
+    WrongInstruction = 0xB005,
+    #[display("Key derivation failed")]
+    KeyDeriveFail = 0xB006,
+    #[display("Orders V0 not supported")]
+    OrdersV0NotSupported = 0xB007,
+    #[display("Wrong context")]
+    WrongContext = 0xB008,
+    #[display("Deserialization failed")]
+    DeserializeFail = 0xB009,
+    #[display("Invalid input UTXO")]
+    TxInvalidInputUtxo = 0xB00A,
+    #[display("Numeric operation failed")]
+    TxNumericOperationFail = 0xB00B,
+    #[display("Tx fee underflow")]
+    TxFeeUnderflow = 0xB00C,
+    #[display("Invalid input path")]
+    TxInvalidInputPath = 0xB00D,
+    #[display("Nothing to sign")]
+    NothingToSign = 0xB00E,
+    #[display("Transaction already finished")]
+    TxAlreadyFinished = 0xB00F,
+    #[display("Invalid path")]
+    InvalidPath = 0xB010,
+    #[display("Invalid uncompressed public key")]
+    InvalidUncompressedPublicKey = 0xB011,
+    #[display("Max buffer length exceeded")]
+    MaxBufferLenExceeded = 0xB012,
+    #[display("Different input commitment hash")]
+    DifferentInputCommitmentHash = 0xB013,
+    #[display("Invalid Timestamp")]
+    InvalidTimestamp = 0xB014,
+
+    // Ecc Errors
+    #[display("ECC Carry")]
+    EccCarry = 0xB100,
+    #[display("ECC Locked")]
+    EccLocked = 0xB101,
+    #[display("ECC Unlocked")]
+    EccUnlocked = 0xB102,
+    #[display("ECC Not Locked")]
+    EccNotLocked = 0xB103,
+    #[display("ECC Not Unlocked")]
+    EccNotUnlocked = 0xB104,
+    #[display("ECC Internal Error")]
+    EccInternalError = 0xB105,
+    #[display("ECC Invalid Parameter Size")]
+    EccInvalidParameterSize = 0xB106,
+    #[display("ECC Invalid Parameter Value")]
+    EccInvalidParameterValue = 0xB107,
+    #[display("ECC Invalid Parameter")]
+    EccInvalidParameter = 0xB108,
+    #[display("ECC Not Invertible")]
+    EccNotInvertible = 0xB109,
+    #[display("ECC Overflow")]
+    EccOverflow = 0xB10A,
+    #[display("ECC Memory Full")]
+    EccMemoryFull = 0xB10B,
+    #[display("ECC No Residue")]
+    EccNoResidue = 0xB10C,
+    #[display("ECC Point At Infinity")]
+    EccPointAtInfinity = 0xB10D,
+    #[display("ECC Invalid Point")]
+    EccInvalidPoint = 0xB10E,
+    #[display("ECC Invalid Curve")]
+    EccInvalidCurve = 0xB10F,
+    #[display("ECC Generic Error")]
+    EccGenericError = 0xB110,
+}
diff --git a/doc/mintlayer.md b/doc/mintlayer.md
new file mode 100644
index 0000000..9dd23d9
--- /dev/null
+++ b/doc/mintlayer.md
@@ -0,0 +1,277 @@
+# Mintlayer application: Technical Specifications
+
+This page details the protocol implemented for the Mintlayer Ledger app.
+
+## Framework
+
+### APDUs
+
+The messaging format of the app is compatible with the standard [APDU protocol](https://developers.ledger.com/docs/device-app/explanation/io#apdu-interpretation-loop).
+
+The class byte used for all standard commands is `CLA = 0xE1`.
+
+| CLA | INS | COMMAND NAME   | DESCRIPTION                                                        |
+| --- | --- | -------------- | ------------------------------------------------------------------ |
+| E1  | 00  | GET_PUBLIC_KEY | Return (and optionally show on screen) a public key and chain code |
+| E1  | 01  | SIGN_TX        | Sign a transaction through a multi-step process                    |
+| E1  | 02  | SIGN_MSG       | Sign a generic message                                             |
+| E1  | 03  | PING           | Simple ping request to check connectivity                          |
+
+### Chunking and P2
+
+The APDU buffer on the Ledger device has a maximum data length (`MAX_ADPU_DATA_LEN` = 255 bytes). To accommodate larger payloads, the app implements a chunking mechanism controlled by the `P2` parameter:
+
+- `P2 = 0x00` (`P2_DONE`): This is the final chunk (or the only chunk) of the instruction. The app will assemble the buffer and execute the command.
+- `P2 = 0x80` (`P2_MORE`): More chunks follow. The app accumulates the data into a buffer (up to a maximum of `1020` bytes) and returns `0x9000` (Success) to ask the client for the next chunk.
+
+_Note: For chunked commands, `INS` and `P1` must remain identical across all chunks of the same sequence._
+
+### Data Serialization and Responses
+
+The app uses **SCALE codec** (`parity_scale_codec`) for the serialization and deserialization of the data payloads. Vector length prefixes and standard variable-length integer types are represented using SCALE's Compact encoding.
+
+#### Response Wrapper
+
+On a successful command execution (returning status word `0x9000`), the app encodes the returned payload inside a top-level SCALE-encoded `Response` enum. 
+
+The SCALE representation of an enum begins with a single byte representing the variant index, followed by the encoded fields of that variant.
+
+The `Response` enum structure and its variant indices are:
+
+| Variant Index | Variant Name | Inner Payload Type | Description |
+|---|---|---|---|
+| `0` | `ExpectingNextChunk` | None | Returned when more APDU chunks are expected (`P2_MORE` sequence) |
+| `1` | `PublicKey` | `GetPublicKeyResponse` | Public key and chain code response |
+| `2` | `TxSetup` | None | Acknowledges transaction initialization (`SIGN_TX` with `P1 = 0`) |
+| `3` | `TxNext` | None | Acknowledges receipt of a transaction chunk |
+| `4` | `TxSignature` | `TxInputSignatureResponse` | Contains an input signature |
+| `5` | `MessageSetup` | None | Acknowledges message signing initialization (`SIGN_MSG` with `P1 = 0`) |
+| `6` | `MessageSignature` | `MsgSignatureResponse` | Contains the final message signature |
+| `7` | `Pong` | None | Pong response for the `PING` instruction |
+
+Any successful command output described below is prefixed by its corresponding 1-byte variant index.
+
+## Status Words
+
+The application returns standard Ledger status words as well as app-specific and ECC cryptographic errors.
+
+| SW     | SW name                        | Description                                    |
+| ------ | ------------------------------ | ---------------------------------------------- |
+| 0x5515 | `DeviceLocked`                 | Device locked                                  |
+| 0x6982 | `NothingReceived`              | Nothing received                               |
+| 0x6985 | `Deny`                         | Rejected by user / User cancelled              |
+| 0x6D00 | `Unknown`                      | Unknown                                        |
+| 0x6E00 | `ClaNotSupported`              | CLA not supported                              |
+| 0x6E01 | `InsNotSupported`              | Instruction not supported                      |
+| 0x6E02 | `WrongP1P2`                    | Wrong P1/P2 parameters                         |
+| 0x6E03 | `WrongApduLength`              | Wrong APDU length                              |
+| 0x9000 | `Ok`                           | Success                                        |
+| 0xB000 | `TxDisplayFail`                | Transaction display failed                     |
+| 0xB001 | `TxLockTimeInvalid`            | Transaction lock time value is invalid         |
+| 0xB002 | `TxWrongLength`                | Transaction wrong length                       |
+| 0xB003 | `TxHashFail`                   | Transaction hashing failed                     |
+| 0xB004 | `TxAddressFail`                | Transaction address failed                     |
+| 0xB005 | `WrongInstruction`             | Different instruction than expected            |
+| 0xB006 | `KeyDeriveFail`                | Key derivation failed                          |
+| 0xB007 | `OrdersV0NotSupported`         | Orders V0 not supported                        |
+| 0xB008 | `WrongContext`                 | Wrong context (e.g., Next called before Start) |
+| 0xB009 | `DeserializeFail`              | SCALE deserialization failed                   |
+| 0xB00A | `TxInvalidInputUtxo`           | Invalid input UTXO                             |
+| 0xB00B | `TxNumericOperationFail`       | Numeric operation failed                       |
+| 0xB00C | `TxFeeUnderflow`               | Tx fee underflow                               |
+| 0xB00D | `TxInvalidInputPath`           | Invalid input path                             |
+| 0xB00E | `NothingToSign`                | Nothing to sign                                |
+| 0xB00F | `TxAlreadyFinished`            | Transaction already finished                   |
+| 0xB010 | `InvalidPath`                  | Invalid BIP32 path                             |
+| 0xB011 | `InvalidUncompressedPublicKey` | Invalid uncompressed public key                |
+| 0xB012 | `MaxBufferLenExceeded`         | Max buffer length exceeded (Chunking limit)    |
+| 0xB013 | `DifferentInputCommitmentHash` | Different input commitment hash                |
+| 0xB014 | `InvalidTimestamp`             | Invalid Timestamp                              |
+| 0xB100 | `EccCarry`                     | ECC Carry                                      |
+| 0xB101 | `EccLocked`                    | ECC Locked                                     |
+| 0xB102 | `EccUnlocked`                  | ECC Unlocked                                   |
+| 0xB103 | `EccNotLocked`                 | ECC Not Locked                                 |
+| 0xB104 | `EccNotUnlocked`               | ECC Not Unlocked                               |
+| 0xB105 | `EccInternalError`             | ECC Internal Error                             |
+| 0xB106 | `EccInvalidParameterSize`      | ECC Invalid Parameter Size                     |
+| 0xB107 | `EccInvalidParameterValue`     | ECC Invalid Parameter Value                    |
+| 0xB108 | `EccInvalidParameter`          | ECC Invalid Parameter                          |
+| 0xB109 | `EccNotInvertible`             | ECC Not Invertible                             |
+| 0xB10A | `EccOverflow`                  | ECC Overflow                                   |
+| 0xB10B | `EccMemoryFull`                | ECC Memory Full                                |
+| 0xB10C | `EccNoResidue`                 | ECC No Residue                                 |
+| 0xB10D | `EccPointAtInfinity`           | ECC Point At Infinity                          |
+| 0xB10E | `EccInvalidPoint`              | ECC Invalid Point                              |
+| 0xB10F | `EccInvalidCurve`              | ECC Invalid Curve                              |
+| 0xB110 | `EccGenericError`              | ECC Generic Error                              |
+| 0xE000 | `Panic`                        | Panic                                          |
+
+---
+
+## Commands
+
+### GET_PUBLIC_KEY
+
+Returns a public key and chain code at the given derivation path.
+Optionally displays the generated address on the device screen for user verification.
+
+#### Encoding
+
+**Command**
+
+| _CLA_ | _INS_ | _P1_                 |
+| ----- | ----- | -------------------- |
+| E1    | 00    | `0` or `1` (Display) |
+
+**Input data (`PublicKeyReq` - SCALE encoded)**
+
+| Type        | Name        | Description                                               |
+| ----------- | ----------- | --------------------------------------------------------- |
+| `u8` (Enum) | `coin_type` | `0` = Mainnet, `1` = Testnet, `2` = Regtest, `3` = Signet |
+| `Vec<u32>`  | `path`      | The BIP32 derivation path                                 |
+
+**Output data (`Response::PublicKey(GetPublicKeyResponse)` - SCALE encoded)**
+
+| Length | Description                                                         |
+| ------ | ------------------------------------------------------------------- |
+| `1`    | Variant index byte (`0x01`)                                         |
+| `65`   | The uncompressed public key (`GetPublicKeyResponse.public_key`)     |
+| `32`   | The chain code (`GetPublicKeyResponse.chain_code`)                  |
+
+#### Description
+
+If `P1` is `0`, the application derives the public key and returns it silently.
+If `P1` is `1`, the application will display the address derived from the requested path on the device screen.
+The command will only return `Ok` (0x9000) if the user approves it, otherwise, it returns `Deny` (0x6985).
+
+---
+
+### SIGN_TX
+
+Signs a Mintlayer transaction.
+Because transactions can be larger than available APDU buffers and RAM, the parsing and signing process is split into an interactive state machine using `P1 = 0` (Start) and `P1 = 1` (Next).
+
+#### Encoding
+
+**Command**
+
+| _CLA_ | _INS_ | _P1_                      |
+| ----- | ----- | ------------------------- |
+| E1    | 01    | `0` (Start) or `1` (Next) |
+
+**Input Data for `P1 = 0` (Start) (`TxMetadataReq` - SCALE encoded)**
+
+| Type  | Name          | Description                                               |
+| ----- | ------------- | --------------------------------------------------------- |
+| `u8`  | `coin`        | `0` = Mainnet, `1` = Testnet, `2` = Regtest, `3` = Signet |
+| `u8`  | `version`     | Transaction version                                       |
+| `u32` | `num_inputs`  | Total number of inputs in the transaction                 |
+| `u32` | `num_outputs` | Total number of outputs in the transaction                |
+
+**Input Data for `P1 = 1` (Next) (`SignTxReq` Enum - SCALE encoded)**
+
+The client sends a sequence of `SignTxReq` variants. The variant index dictates the type of data being sent:
+
+- `Input` (Index 0): Contains `TxInputReq` (Input address paths and UTXO/Account info).
+- `InputCommitment` (Index 1): Contains `SighashInputCommitment`.
+- `Output` (Index 2): Contains `TxOutputReq`.
+- `NextSignature` (Index 3): Requests the device to yield the next available signature.
+
+**Output data (`Response::TxSignature(TxInputSignatureResponse)` - SCALE encoded)**
+
+Yielded during `NextSignature` sequences.
+
+The response payload is prefixed with the `TxSignature` variant index (`0x04`), followed by the `TxInputSignatureResponse` fields:
+
+| Type          | Name           | Description                                 |
+| ------------- | -------------- | ------------------------------------------- |
+| `[u8; 64]`    | `signature`    | The 64-byte cryptographic signature         |
+| `Option<u32>` | `multisig_idx` | Optional multisig index                     |
+| `u32` | `input_idx` | The index of the input that was just signed |
+| `bool`        | `has_next`     | True if there are more signatures remaining |
+
+*Note: For `Start` (`P1 = 0`) and intermediate `Next` (`P1 = 1`) data chunks (before signatures), the app returns `Response::TxSetup` (variant index `0x02`) and `Response::TxNext` (variant index `0x03`) respectively, with no extra fields.*
+
+#### Description
+
+To sign a transaction, the client must follow a strict order:
+
+1. Call `SIGN_TX` with `P1 = 0` (Start) passing the overall transaction metadata (`TxMetadataReq`).
+2. Sequentially call `SIGN_TX` with `P1 = 1` (Next) to stream inputs `Input`, input commitments `InputCommitment` and then outputs (`Output`).
+3. After all data is verified by the user on the device's secure screen, the client requests signatures by repeatedly calling `SIGN_TX` with `P1 = 1` and the `NextSignature` variant.
+4. The device will yield `TxInputSignatureResponse` payloads until `has_next` is false.
+
+---
+
+### SIGN_MSG
+
+Signs a generic message using a BIP-32 derived key. The process is stateful to allow streaming long messages.
+
+#### Encoding
+
+**Command**
+
+| _CLA_ | _INS_ | _P1_                      |
+| ----- | ----- | ------------------------- |
+| E1    | 02    | `0` (Start) or `1` (Next) |
+
+**Input Data for `P1 = 0` (Start) (`SignMessageReq` - SCALE encoded)**
+
+| Type        | Name        | Description                                   |
+| ----------- | ----------- | --------------------------------------------- |
+| `u8` (Enum) | `coin`      | Coin type (Mainnet, Testnet, Regtest, Signet) |
+| `u8` (Enum) | `addr_type` | `0` = PublicKey, `1` = PublicKeyHash          |
+| `Vec<u32>`  | `path`      | The BIP32 derivation path to use for signing  |
+
+**Input Data for `P1 = 1` (Next)**
+
+| Type         | Description                                                   |
+| ------------ | ------------------------------------------------------------- |
+| `<variable>` | The raw byte chunks of the message payload to be accumulated. |
+
+**Output data (`Response::MessageSignature(MsgSignatureResponse)` - SCALE encoded)**
+
+The response payload is prefixed with the `MessageSignature` variant index (`0x06`), followed by the `MsgSignatureResponse` fields:
+
+| Length | Description                         |
+| ------ | ----------------------------------- |
+| `64`   | The 64-byte cryptographic signature |
+
+*Note: For `Start` (`P1 = 0`) initialization, the app returns `Response::MessageSetup` (variant index `0x05`) with no extra fields.*
+
+#### Description
+
+The `SIGN_MSG` flow initializes the signing context via `Start`.
+The client then sends the message chunks iteratively using `Next`.
+Once the message transmission is completed and the user validates the request on the hardware screen,
+the device returns the 64-byte signature.
+Chunking the payload via the `P2` parameter mechanism is utilized here if the data exceeds a single APDU packet limit.
+
+---
+
+### PING
+
+Simple ping request to check connectivity.
+
+#### Encoding
+
+**Command**
+
+| _CLA_ | _INS_ | _P1_ |
+| ----- | ----- | ---- |
+| E1    | 03    | `0`  |
+
+**Input data**
+
+None.
+
+**Output data (`Response::Pong` - SCALE encoded)**
+
+| Length | Description                                                 |
+| ------ | ----------------------------------------------------------- |
+| `1`    | Variant index byte (`0x07`) representing `Response::Pong` |
+
+#### Description
+
+The client sends a `PING` command to verify that the app is running and responsive.
+The app returns `Response::Pong` (success indicator) on success, and returns the home screen to the user.
diff --git a/docs/memory_usage.md b/docs/memory_usage.md
new file mode 100644
index 0000000..71a8fba
--- /dev/null
+++ b/docs/memory_usage.md
@@ -0,0 +1,94 @@
+# Memory usage
+
+## Device memory size
+
+Judging by `.ld` files in [the Ledger Rust SDK](https://github.com/LedgerHQ/ledger-device-rust-sdk/tree/cad196841dbd72c037cfa01bec81a4a3ae57a04e/ledger_secure_sdk_sys/devices),
+the amount of SRAM each model has is:
+| Device            | SRAM |
+| ----------------- | ---- |
+| apex_p, nanosplus | 40KB |
+| flex, stax        | 36KB |
+| nanox             | 28KB |
+
+The first part of the RAM will be occupied by the app's globals (one of which will be the heap used by the Rust code) and the rest is stack.
+
+The `HEAP_SIZE` variable in `.cargo/config.toml` specifies the size of the Rust heap (which is just [a static array under the hood](https://github.com/LedgerHQ/ledger-device-rust-sdk/blob/cad196841dbd72c037cfa01bec81a4a3ae57a04e/ledger_secure_sdk_sys/src/lib.rs#L64)).
+
+I.e. the bigger `HEAP_SIZE` is, the less is the stack. And with the `HEAP_SIZE` of 16KB, we'll have less than 12KB of stack at nanox.
+
+## Reducing app stack usage
+
+- Function's parameters and the return value consume stack space (unless the object is small enough to be put into a register).
+- Moving an object around inside the function body may increase stack consumption as well.
+
+So,
+- Box large types if you need to pass/return them by value.
+- Avoid unboxing boxed large objects when passing them by value. E.g. even if a function only needs `LargeObj`,
+  pass `Box<LargeObj>` to it anyway (which would be discouraged by the "normal" best practices), because passing it
+  unboxed would increase the stack usage.\
+  This includes the case when a member function consumes `self` - declare it as `self: Box<Self>` instead.
+- `sizeof` of 200 bytes is probably large enough. E.g. in the past boxing certain objects of roughly this size
+  decreased stack usage by roughly 1.3KB (which is more than 10% of all stack space available on nanox).
+
+### Determining the current stack usage of the app
+
+Build the app with `emit-stack-sizes`:
+```
+RUSTFLAGS="-Z emit-stack-sizes" cargo ledger build nanox
+```
+After that you can use `llvm-readobj` to obtain sizes of stack frames of each function:
+```
+llvm-readobj --stack-sizes --demangle target/nanox/release/mintlayer-app
+```
+
+You can also force `llvm-readobj` to emit json and use `jq` to sort the output by the stack size. E.g. the following
+will print 20 functions with the biggest stack frame size:
+```
+llvm-readobj --stack-sizes --demangle --elf-output-style=JSON target/nanox/release/mintlayer-app | jq -r '.[].StackSizes | sort_by(.Entry.Size) | reverse | .[:20][] | .Entry | "\(.Size)\t\(.Functions | join(", "))"'
+```
+
+### Determining the actual available stack
+
+At least in the current version of the SDK, the linker script emits symbols that
+can be used to determine the actual stack size, e.g. via `llvm-readelf`:
+```
+llvm-readelf -s target/nanox/release/mintlayer-app | rg '_stack|_estack'
+```
+Example output:
+```
+1581: da7a425c     0 NOTYPE  GLOBAL DEFAULT     6 app_stack_canary
+1624: da7a7000     0 NOTYPE  GLOBAL DEFAULT     6 _estack
+1697: da7a4260     0 NOTYPE  GLOBAL DEFAULT     6 _stack
+```
+Here `_estack` is the end of the stack area, `_stack` is the beginning of it and `app_stack_canary` is a 4-byte marker
+placed just below `_stack` and used to detect stack overflows. The difference between `_estack` and `_stack` will be
+the stack size, in this case it's da7a7000-da7a4260=2DA0 (11680 in decimal).
+
+### Other notes
+
+This code:
+```
+fn foo(x: &X) {
+    match x {
+        X::A => { /*do stuff*/ },
+        X::B => { /*do other stuff*/ },
+    }
+}
+```
+may use more stack than:
+```
+fn foo(x: &X) {
+    match x {
+        X::A => stuff(),
+        X::B => other_stuff(),
+    }
+}
+
+#[inline(never)] fn stuff()       { /*do stuff*/ }
+#[inline(never)] fn other_stuff() { /*do other stuff*/ }
+```
+I.e. it seems that LLVM cannot always reuse stack slots between different branches of the `match`, and with bigger enums
+and bigger stack usage in each branch the overhead becomes bigger as well. So, splitting a large `match` into separate
+non-inlinable functions may be a way of reducing the app's stack usage, but this should probably be the last resort,
+because if all large objects are boxed, the stack usage in each branch should be relatively small, which will make
+the overhead relatively small as well.
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diff --git a/ledger_app.toml b/ledger_app.toml
new file mode 100644
index 0000000..853c6c5
--- /dev/null
+++ b/ledger_app.toml
@@ -0,0 +1,7 @@
+[app]
+build_directory = "./"
+sdk = "Rust"
+devices = ["nanox", "nanos+", "stax", "flex", "apex_p"]
+
+[tests]
+pytest_directory = "./tests/"
diff --git a/run_extra_checks.sh b/run_extra_checks.sh
new file mode 100755
index 0000000..2e4eeea
--- /dev/null
+++ b/run_extra_checks.sh
@@ -0,0 +1,46 @@
+#!/bin/bash
+
+set -e
+set -o nounset
+
+# Run some extra checks (for now its mostly clippy).
+
+# Notes about clippy:
+# 1. Ledger's guideline enforcer also runs it. But at the moment of writing this it doesn't check
+#    tests, see https://github.com/LedgerHQ/ledger-app-workflows/blob/master/scripts/check_all.sh.
+#    Besides, we want to enable some additional checks, similar to what we do in Mintlayer Core,
+#    so we do a separate clippy run here.
+# 2. The guideline enforcer runs it for all existing device models, but in this additional run this
+#    is redundant, so we use one arbitrarily chosen model.
+# 3. Unlike in Mintlayer Core, we can't disable certain annoying and mostly useless checks (such as
+#    let-and-return), because the guideline enforcer will run them anyway.
+
+SCRIPT_DIR=$(cd "$(dirname "$0")" && pwd)
+
+cd "$SCRIPT_DIR"
+
+echo "Running cargo fmt"
+cargo fmt --check -- --config newline_style=Unix
+
+CLIPPY_TARGET_ARG=--target=apex_p
+
+echo "Running clippy (any code)"
+cargo clippy "$CLIPPY_TARGET_ARG" --all-features --workspace --bins --lib --tests  -- \
+    -D warnings \
+    -D clippy::implicit_saturating_sub \
+    -D clippy::implicit_clone \
+    -D clippy::map_unwrap_or \
+    -D clippy::unnested_or_patterns \
+    -D clippy::mut_mut \
+    -D clippy::todo
+
+echo "Running clippy (production code)"
+# TODO: consider also enabling `unwrap_used` and `items_after_statements`.
+cargo clippy "$CLIPPY_TARGET_ARG" --all-features --workspace --bins --lib -- \
+    -A clippy::all \
+    -D clippy::float_arithmetic \
+    -D clippy::dbg_macro \
+    -D clippy::fallible_impl_from \
+    -D clippy::string_slice
+
+echo "All checks passed"
diff --git a/run_unit_tests.sh b/run_unit_tests.sh
new file mode 100755
index 0000000..5f3d45c
--- /dev/null
+++ b/run_unit_tests.sh
@@ -0,0 +1,33 @@
+#!/bin/bash
+
+set -e
+set -o nounset
+
+# Run unit tests; the first argument must be the device model: nanox, nanosp, stax, flex or apex_p.
+
+SCRIPT_DIR=$(cd "$(dirname "$0")" && pwd)
+
+cd "$SCRIPT_DIR"
+
+MODEL=$1
+
+if [[ "$MODEL" == "nanosp" ]]; then
+    TARGET="nanosplus"
+else
+    TARGET="$MODEL"
+fi
+
+echo "*** Running unit tests on $MODEL ***"
+
+PACKAGES=(mintlayer-app-core)
+
+for package in "${PACKAGES[@]}"; do
+    echo "*** Building unit tests for $package ***"
+
+    output=$(cargo test -p "$package" --release --no-run --message-format=json --target="$TARGET")
+    jq_selector='select(.reason == "compiler-artifact") | select(.profile.test == true) | select(.executable != null) | .executable'
+    test_exe_path=$(jq -r "$jq_selector" <<< "$output")
+
+    echo "*** Running unit tests for $package ***"
+    speculos --display headless --model "$MODEL" "$test_exe_path"
+done
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..ffbbd17
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,3 @@
+[toolchain]
+channel = "nightly-2025-12-05"
+
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..1b527f4
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,29 @@
+/*****************************************************************************
+ *   Mintlayer Ledger App.
+ *   (c) 2023 Ledger SAS.
+ *   (c) 2025 RBB S.r.l.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *****************************************************************************/
+
+#![no_std]
+#![no_main]
+
+use mintlayer_app_core::mintlayer_main;
+
+ledger_device_sdk::set_panic!(ledger_device_sdk::exiting_panic);
+
+#[no_mangle]
+extern "C" fn sample_main() {
+    mintlayer_main();
+}
diff --git a/tests/application_client/__init__.py b/tests/application_client/__init__.py
new file mode 100644
index 0000000..dff703e
--- /dev/null
+++ b/tests/application_client/__init__.py
@@ -0,0 +1,761 @@
+#  Copyright (c) 2022 RBB S.r.l
+#  opensource@mintlayer.org
+#  SPDX-License-Identifier: MIT
+#  Licensed under the MIT License;
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#  https://github.com/mintlayer/mintlayer-core/blob/master/LICENSE
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+import scalecodec  # type: ignore
+
+MAINNET = 0
+TESTNET = 1
+REGTEST = 2
+SIGNET = 3
+
+
+def init_mintlayer_types():
+    custom_types = {
+        "types": {
+            "Bip32Path": "Vec<u32>",
+            "Amount": "Compact<u128>",
+            "H256": "[u8; 32]",
+            "BlockHeight": "Compact<u64>",
+            "OutputValue": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Coin", "Amount"],
+                    ["TokenV0", ""],  # deprecated
+                    ["TokenV1", "(TokenId, Amount)"],
+                ],
+            },
+            "InputAddressPath": {
+                "type": "struct",
+                "type_mapping": [
+                    ["path", "Vec<u32>"],
+                    ["multisig_idx", "Option<u32>"],
+                ],
+            },
+            "InputMeta": {
+                "type": "struct",
+                "type_mapping": [
+                    ["addresses", "Vec<InputAddressPath>"],
+                ],
+            },
+            "Destination": {
+                "type": "enum",
+                "type_mapping": [
+                    ["AnyoneCanSpend", "()"],
+                    ["Address", "(PublicKeyHash)"],
+                    ["PublicKey", "PublicKey"],
+                    ["ScriptHash", "ScriptId"],
+                    ["ClassicMultiSig", "(PublicKeyHash)"],
+                ],
+            },
+            "PublicKeyHash": "[u8; 20]",
+            "PublicKey": {
+                "type": "struct",
+                "type_mapping": [
+                    ["key", "PublicKeyHolder"],
+                ],
+            },
+            "PublicKeyHolder": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Secp256k1Schnorr", "(Secp256k1PublicKey)"],
+                ],
+            },
+            "Secp256k1PublicKey": {
+                "type": "struct",
+                "type_mapping": [
+                    ["pubkey_data", "[u8; 33]"],
+                ],
+            },
+            "IsTokenFreezable": {
+                "type": "enum",
+                "type_mapping": [
+                    ["No", "()"],
+                    ["Yes", "()"],
+                ],
+            },
+            "TokenTotalSupply": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Fixed", "Amount"],
+                    ["Lockable", "()"],
+                    ["Unlimited", "()"],
+                ],
+            },
+            "TokenIssuanceV1": {
+                "type": "struct",
+                "type_mapping": [
+                    ["token_ticker", "Vec<u8>"],
+                    ["number_of_decimals", "u8"],
+                    ["metadata_uri", "Vec<u8>"],
+                    ["total_supply", "TokenTotalSupply"],
+                    ["authority", "Destination"],
+                    ["is_freezable", "IsTokenFreezable"],
+                ],
+            },
+            "TokenIssuance": {
+                "type": "enum",
+                # The Rust enum has an explicit codec index of 1 for the V1 variant.
+                # A placeholder is added for index 0 to ensure correct encoding.
+                "type_mapping": [
+                    ["_Unused", "()"],
+                    ["V1", "TokenIssuanceV1"],
+                ],
+            },
+            "TokenCreator": {
+                "type": "struct",
+                "type_mapping": [
+                    ["public_key", "PublicKey"],
+                ],
+            },
+            "Metadata": {
+                "type": "struct",
+                "type_mapping": [
+                    ["creator", "Option<TokenCreator>"],
+                    ["name", "Vec<u8>"],
+                    ["description", "Vec<u8>"],
+                    ["ticker", "Vec<u8>"],
+                    ["icon_uri", "Vec<u8>"],
+                    ["additional_metadata_uri", "Vec<u8>"],
+                    ["media_uri", "Vec<u8>"],
+                    ["media_hash", "Vec<u8>"],
+                ],
+            },
+            "NftIssuanceV0": {
+                "type": "struct",
+                "type_mapping": [
+                    ["metadata", "Metadata"],
+                ],
+            },
+            "NftIssuance": {
+                "type": "enum",
+                "type_mapping": [
+                    ["V0", "NftIssuanceV0"],
+                ],
+            },
+            "TxOutput": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Transfer", "(OutputValue, Destination)"],
+                    ["LockThenTransfer", "(OutputValue, Destination, OutputTimeLock)"],
+                    ["Burn", "(OutputValue)"],
+                    ["CreateStakePool", "(PoolId, StakePoolData)"],
+                    ["ProduceBlockFromStake", "(Destination, PoolId)"],
+                    ["CreateDelegationId", "(Destination, PoolId)"],
+                    ["DelegateStaking", "(Amount, DelegationId)"],
+                    ["IssueFungibleToken", "TokenIssuance"],
+                    ["IssueNft", "(TokenId, NftIssuance, Destination)"],
+                    ["DataDeposit", "Vec<u8>"],
+                    ["Htlc", "(OutputValue, HashedTimelockContract)"],
+                ],
+            },
+            "HashedTimelockContract": {
+                "type": "struct",
+                "type_mapping": [
+                    ["secret_hash", "[u8; 20]"],
+                    ["spend_key", "Destination"],
+                    ["refund_timelock", "OutputTimeLock"],
+                    ["refund_key", "Destination"],
+                ],
+            },
+            "OutputTimeLock": {
+                "type": "enum",
+                "type_mapping": [
+                    ["UntilHeight", "(BlockHeight)"],
+                    ["UntilTime", "(BlockTimestamp)"],
+                    ["ForBlockCount", "Compact<u64>"],
+                    ["ForSeconds", "Compat<u64>"],
+                ],
+            },
+            "PoolId": "H256",
+            "DelegationId": "H256",
+            "TokenId": "H256",
+            "OrderId": "H256",
+            "StakePoolData": {
+                "type": "struct",
+                "type_mapping": [
+                    ["value", "Amount"],
+                    ["staker", "Destination"],
+                    ["vrf_public_key", "VRFPublicKey"],
+                    ["decommission_key", "Destination"],
+                    ["margin_ratio_per_thousand", "u16"],
+                    ["cost_per_block", "Amount"],
+                ],
+            },
+            "VRFPublicKey": {
+                "type": "struct",
+                "type_mapping": [
+                    ["key", "VRFPublicKeyHolder"],
+                ],
+            },
+            "VRFPublicKeyHolder": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Schnorrkel", "(SchnorrkelPublicKey)"],
+                ],
+            },
+            "SchnorrkelPublicKey": {
+                "type": "struct",
+                "type_mapping": [
+                    ["key", "[u8; 32]"],
+                ],
+            },
+            "OutPointSourceId": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Transaction", "H256"],
+                    ["BlockReward", "H256"],
+                ],
+            },
+            "OutPoint": {
+                "type": "struct",
+                "type_mapping": [
+                    ["id", "OutPointSourceId"],
+                    ["index", "u32"],
+                ],
+            },
+            "AccountNonce": "Compact<u64>",
+            "IsTokenUnfreezable": {
+                "type": "enum",
+                "type_mapping": [
+                    ["No", "()"],
+                    ["Yes", "()"],
+                ],
+            },
+            "AccountCommand": {
+                "type": "enum",
+                "type_mapping": [
+                    ["MintTokens", "(TokenId, Amount)"],
+                    ["UnmintTokens", "TokenId"],
+                    ["LockTokenSupply", "TokenId"],
+                    ["FreezeToken", "(TokenId, IsTokenUnfreezable)"],
+                    ["UnfreezeToken", "TokenId"],
+                    ["ChangeTokenAuthority", "(TokenId, Destination)"],
+                    ["ConcludeOrder", "OrderId"],
+                    ["FillOrder", "(OrderId, Amount, Destination)"],
+                    ["ChangeTokenMetadataUri", "(TokenId, Vec<u8>)"],
+                ],
+            },
+            "OrderAccountCommand": {
+                "type": "enum",
+                "type_mapping": [
+                    ["FillOrder", "(OrderId, Amount)"],
+                    ["FreezeOrder", "OrderId"],
+                    ["ConcludeOrder", "OrderId"],
+                ],
+            },
+            "TxInput": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Utxo", "OutPoint"],
+                    ["Account", "(AccountOutPoint)"],
+                    ["AccountCommand", "(AccountNonce, AccountCommand)"],
+                    ["OrderAccountCommand", "OrderAccountCommand"],
+                ],
+            },
+            "TxInputWithAdditionalInfo": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Utxo", "(OutPoint, AdditionalUtxoInfo)"],
+                    ["Account", "(AccountOutPoint)"],
+                    ["AccountCommand", "(AccountNonce, AccountCommand)"],
+                    ["OrderAccountCommand", "(OrderAccountCommand, AdditionalOrderInfo)"],
+                ],
+            },
+            "AccountOutPoint": {
+                "type": "struct",
+                "type_mapping": [
+                    ["nonce", "Compact<u64>"],
+                    ["account", "AccountSpending"],
+                ],
+            },
+            "AccountSpending": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Delegation", "(H256, Amount)"],
+                ],
+            },
+            "TransactionV1": {
+                "type": "struct",
+                "type_mapping": [
+                    ["version", "u8"],  # has to be 1
+                    ["flags", "Compact<u128>"],
+                    ["inputs", "Vec<TxInput>"],
+                    ["outputs", "Vec<TxOutput>"],
+                ],
+            },
+            "InputWitness": {
+                "type": "enum",
+                "type_mapping": [
+                    ["NoSignature", "Option<Vec<u8>>"],
+                    ["Standard", "StandardInputSignature"],
+                ],
+            },
+            "TokenAdditionalInfo": {
+                "type": "struct",
+                "type_mapping": [
+                    ["num_decimals", "u8"],
+                    ["ticker", "Vec<u8>"],
+                ],
+            },
+            "PoolAdditionalInfo": {
+                "type": "struct",
+                "type_mapping": [
+                    ["staker_balance", "Amount"],
+                ],
+            },
+            "OrderAdditionalInfo": {
+                "type": "struct",
+                "type_mapping": [
+                    ["initially_asked", "OutputValue"],
+                    ["initially_given", "OutputValue"],
+                    ["ask_balance", "Amount"],
+                    ["give_balance", "Amount"],
+                ],
+            },
+            "InfoId": {
+                "type": "enum",
+                "type_mapping": [
+                    ["TokenId", "H256"],
+                    ["PoolId", "H256"],
+                    ["OrderId", "H256"],
+                ],
+            },
+            "SighashInputCommitment": {
+                "type": "enum",
+                "type_mapping": [
+                    ["None", "()"],
+                    ["Utxo", "TxOutput"],
+                    ["ProduceBlockFromStakeUtxo", "(TxOutput, Amount)"],
+                    ["FillOrderAccountCommand", "(OutputValue, OutputValue)"],
+                    [
+                        "ConcludeOrderAccountCommand",
+                        "(OutputValue, OutputValue, Amount, Amount)",
+                    ],
+                ],
+            },
+            "TxAdditionalInfo": {
+                "type": "struct",
+                "type_mapping": [
+                    ["token_info", "BTreeMap<H256, TokenAdditionalInfo>"],
+                    ["pool_info", "BTreeMap<H256, PoolAdditionalInfo>"],
+                    ["order_info", "BTreeMap<H256, OrderAdditionalInfo>"],
+                ],
+            },
+            "StandardInputSignature": {
+                "type": "struct",
+                "type_mapping": [
+                    ["sighash_type", "u8"],
+                    ["raw_signature", "Vec<u8>"],
+                ],
+            },
+            "SignedTransaction": {
+                "type": "struct",
+                "type_mapping": [
+                    ["transaction", "TransactionV1"],
+                    ["signatures", "Vec<InputWitness>"],
+                ],
+            },
+            "PartiallySignedTransaction": {
+                "type": "struct",
+                "type_mapping": [
+                    ["tx", "TransactionV1"],
+                    ["witnesses", "Vec<Option<InputWitness>>"],
+                    ["input_utxos", "Vec<Option<TxOutput>>"],
+                    ["destinations", "Vec<Option<Destination>>"],
+                    ["htlc_secrets", "Vec<Option<[u8; 32]>>"],
+                    ["additional_infos", "TxAdditionalInfo"],
+                ],
+            },
+            "SignedTransactionIntent": {
+                "type": "struct",
+                "type_mapping": [
+                    ["signed_message", "String"],
+                    ["signatures", "Vec<Vec<u8>>"],
+                ],
+            },
+            "AuthorizedPublicKeyHashSpend": {
+                "type": "struct",
+                "type_mapping": [
+                    ["public_key", "PublicKey"],
+                    ["signature", "Signature"],
+                ],
+            },
+            "TxMetadataVersionReq": {
+                "type": "enum",
+                "type_mapping": [
+                    ["V1", "TxMetadataV1Req"],
+                ],
+            },
+            "TxMetadataV1Req": {
+                "type": "struct",
+                "type_mapping": [
+                    ["num_inputs", "u32"],
+                    ["num_outputs", "u32"],
+                ],
+            },
+            "TxMetadataReq": {
+                "type": "struct",
+                "type_mapping": [
+                    ["coin", "u8"],
+                    ["version", "TxMetadataVersionReq"],
+                ],
+            },
+            "TxInputReq": {
+                "type": "struct",
+                "type_mapping": [
+                    ["addresses", "Vec<InputAddressPath>"],
+                    ["inp", "TxInputWithAdditionalInfo"],
+                ],
+            },
+            "AdditionalUtxoInfo": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Utxo", "TxOutput"],
+                    [
+                        "PoolInfo",
+                        "(TxOutput, Amount)",
+                    ],
+                ],
+            },
+            "AdditionalOrderInfo": {
+                "type": "struct",
+                "type_mapping": [
+                    ["initially_asked", "OutputValue"],
+                    ["initially_given", "OutputValue"],
+                    ["ask_balance", "Amount"],
+                    ["give_balance", "Amount"],
+                ],
+            },
+            "TxOutputReq": {
+                "type": "struct",
+                "type_mapping": [
+                    ["out", "TxOutput"],
+                ],
+            },
+            "SignTxReq": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Input", "TxInputReq"],
+                    ["InputCommitment", "SighashInputCommitment"],
+                    ["Output", "TxOutputReq"],
+                    ["NextSignature", "()"],
+                ],
+            },
+            "SignatureResponse": "[u8; 64]",
+            "MsgSignature": {
+                "type": "struct",
+                "type_mapping": [
+                    ["signature", "SignatureResponse"],
+                ],
+            },
+            "TxInputSignatureResponse": {
+                "type": "struct",
+                "type_mapping": [
+                    ["signature", "SignatureResponse"],
+                    ["input_idx", "u32"],
+                    ["multisig_idx", "Option<u32>"],
+                    ["has_next", "bool"],
+                ],
+            },
+            "PublicKeyResponse": "[u8; 65]",
+            "ChainCodeResponse": "[u8; 32]",
+            "GetPublicKeyResponse": {
+                "type": "struct",
+                "type_mapping": [
+                    ["public_key", "PublicKeyResponse"],
+                    ["chain_code", "ChainCodeResponse"],
+                ],
+            },
+            "MsgSignatureResponse": {
+                "type": "struct",
+                "type_mapping": [
+                    ["signature", "SignatureResponse"],
+                ],
+            },
+            "Response": {
+                "type": "enum",
+                "type_mapping": [
+                    ["ExpectingNextChunk", "()"],
+                    ["PublicKey", "GetPublicKeyResponse"],
+                    ["TxSetup", "()"],
+                    ["TxNext", "()"],
+                    ["TxSignature", "TxInputSignatureResponse"],
+                    ["MessageSetup", "()"],
+                    ["MessageSignature", "MsgSignatureResponse"],
+                    ["Pong", "()"],
+                ],
+            },
+            "SemVer": {
+                "type": "struct",
+                "type_mapping": [
+                    ["major", "u8"],
+                    ["minor", "u8"],
+                    ["patch", "u16"],
+                ],
+            },
+            "PeerAddressIp4": {
+                "type": "struct",
+                "type_mapping": [
+                    ["ip", "[u8; 4]"],
+                    ["port", "u16"],
+                ],
+            },
+            "PeerAddressIp6": {
+                "type": "struct",
+                "type_mapping": [
+                    ["ip", "[u8; 16]"],
+                    ["port", "u16"],
+                ],
+            },
+            "PeerAddress": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Ip4", "PeerAddressIp4"],
+                    ["Ip6", "PeerAddressIp6"],
+                ],
+            },
+            "HandshakeHello": {
+                "type": "struct",
+                "type_mapping": [
+                    ["protocol", "u32"],
+                    ["network", "[u8; 4]"],
+                    ["services", "u64"],
+                    ["user_agent", "String"],
+                    ["version", "SemVer"],
+                    ["receiver_address", "Option<PeerAddress>"],
+                    ["current_time", "Compact<u64>"],
+                    ["handshake_nonce", "u64"],
+                ],
+            },
+            "HandshakeHelloAck": {
+                "type": "struct",
+                "type_mapping": [
+                    ["protocol", "u32"],
+                    ["network", "[u8; 4]"],
+                    ["services", "u64"],
+                    ["user_agent", "String"],
+                    ["version", "SemVer"],
+                    ["receiver_address", "Option<PeerAddress>"],
+                    ["current_time", "Compact<u64>"],
+                ],
+            },
+            "HandshakeMessage": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Hello", "HandshakeHello"],
+                    ["HelloAck", "HandshakeHelloAck"],
+                ],
+            },
+            "PingMessage": {
+                "type": "struct",
+                "type_mapping": [
+                    ["nonce", "u64"],
+                ],
+            },
+            "BlockHeader": {
+                "type": "struct",
+                "type_mapping": [
+                    ["version", "u8"],
+                    ["prev_block_id", "H256"],
+                    ["tx_merkle_root", "H256"],
+                    ["witness_merkle_root", "H256"],
+                    ["timestamp", "Compact<u64>"],
+                    ["consensus_data", "ConsensusData"],
+                ],
+            },
+            "SignedBlockHeader": {
+                "type": "struct",
+                "type_mapping": [
+                    ["header", "BlockHeader"],
+                    ["signature", "BlockHeaderSignature"],
+                ],
+            },
+            "BlockHeaderSignature": {
+                "type": "enum",
+                "type_mapping": [
+                    ["None", "()"],
+                    ["HeaderSignature", "(BlockHeaderSignatureData)"],
+                ],
+            },
+            "BlockHeaderSignatureData": {
+                "type": "struct",
+                "type_mapping": [
+                    ["signature", "(Signature)"],
+                ],
+            },
+            "Signature": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Secp256k1Schnorr", "[u8; 64]"],
+                ],
+            },
+            "ConsensusData": {
+                "type": "enum",
+                "type_mapping": [
+                    ["None", "()"],
+                    ["PoW", "PoWData"],
+                    ["PoS", "PoSData"],
+                ],
+            },
+            "PoWData": {
+                "type": "struct",
+                "type_mapping": [
+                    ["bits", "u32"],
+                    ["nonce", "u128"],
+                ],
+            },
+            "PoSData": {
+                "type": "struct",
+                "type_mapping": [
+                    ["kernel_inputs", "Vec<TxInput>"],
+                    ["kernel_witness", "Vec<InputWitness>"],
+                    ["stake_pool_id", "PoolId"],
+                    ["vrf_data", "VRFReturn"],
+                    ["compact_target", "u32"],
+                ],
+            },
+            "VRFReturn": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Schnorrkel", "(SchnorrkelVRFReturn)"],
+                ],
+            },
+            "SchnorrkelVRFReturn": {
+                "type": "struct",
+                "type_mapping": [
+                    ["preout", "[u8; 32]"],
+                    ["proof", "[u8; 64]"],
+                ],
+            },
+            "BlockIdAtHeight": "H256",
+            "BlockBody": {
+                "type": "struct",
+                "type_mapping": [
+                    ["reward", "BlockReward"],
+                    ["transactions", "Vec<SignedTransaction>"],
+                ],
+            },
+            "BlockReward": {
+                "type": "struct",
+                "type_mapping": [
+                    ["reward_outputs", "Vec<TxOutput>"],
+                ],
+            },
+            "Block": {
+                "type": "enum",
+                "type_mapping": [
+                    ["V1", "(BlockV1)"],
+                ],
+            },
+            "BlockV1": {
+                "type": "struct",
+                "type_mapping": [
+                    ["header", "SignedBlockHeader"],
+                    ["body", "BlockBody"],
+                ],
+            },
+            "Id": "[u8; 32]",
+            "HeaderListRequest": "Vec<Id>",
+            "HeaderList": "Vec<SignedBlockHeader>",
+            "TransactionResponse": {
+                "type": "enum",
+                "type_mapping": [
+                    ["not_found", "Id"],
+                    ["found", "SignedTransaction"],
+                ],
+            },
+            "Message": {
+                "type": "enum",
+                "type_mapping": [
+                    ["handshake", "HandshakeMessage"],
+                    ["ping_request", "PingMessage"],
+                    ["ping_response", "PingMessage"],
+                    ["new_transaction", "Id"],
+                    ["header_list_request", "HeaderListRequest"],
+                    ["header_list", "HeaderList"],
+                    ["block_list_request", "Vec<Id>"],
+                    ["block_response", "()"],
+                    ["announce_addr_request", "PeerAddress"],
+                    ["addr_list_request", "()"],
+                    ["addr_list_response", "Vec<PeerAddress>"],
+                    ["transaction_request", "Id"],
+                    ["transaction_response", "TransactionResponse"],
+                ],
+            },
+            "GenerateBlockInputData": {
+                "type": "enum",
+                "type_mapping": [
+                    ["None", "()"],
+                    ["PoW", "PoWGenerateBlockInputData"],
+                    ["PoS", "PoSGenerateBlockInputData"],
+                ],
+            },
+            "PoSGenerateBlockInputData": {
+                "type": "struct",
+                "type_mapping": [
+                    ["stake_private_key", "PrivateKey"],
+                    ["vrf_private_key", "VRFPrivateKey"],
+                    ["pool_id", "PoolId"],
+                    ["kernel_inputs", "Vec<TxInput>"],
+                    ["kernel_input_utxo", "Vec<TxOutput>"],
+                ],
+            },
+            "Privatekey": {
+                "type": "struct",
+                "type_mapping": [
+                    ["key", "PrivateKeyHolder"],
+                ],
+            },
+            "PrivateKeyHolder": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Secp256k1Schnorr", "(Secp256k1PrivateKey)"],
+                ],
+            },
+            "Secp256k1PrivateKey": {
+                "type": "struct",
+                "type_mapping": [
+                    ["data", "[u8; 32]"],
+                ],
+            },
+            "VRFPrivateKey": {
+                "type": "struct",
+                "type_mapping": [
+                    ["key", "VRFPrivateKeyHolder"],
+                ],
+            },
+            "VRFPrivateKeyHolder": {
+                "type": "enum",
+                "type_mapping": [
+                    ["Schnorrkel", "(SchnorrkelPrivateKey)"],
+                ],
+            },
+            "SchnorrkelPrivateKey": {
+                "type": "struct",
+                "type_mapping": [["key", "[u8; 64]"]],
+            },
+            "PoWGenerateBlockInputData": {
+                "type": "struct",
+                "type_mapping": [
+                    ["reward_destination", "Destination"],
+                ],
+            },
+        }
+    }
+
+    scalecodec.base.RuntimeConfiguration().update_type_registry(custom_types)
+
+
+init_mintlayer_types()
diff --git a/tests/application_client/mintlayer_command_sender.py b/tests/application_client/mintlayer_command_sender.py
new file mode 100644
index 0000000..939d5e4
--- /dev/null
+++ b/tests/application_client/mintlayer_command_sender.py
@@ -0,0 +1,416 @@
+from contextlib import contextmanager
+from dataclasses import dataclass
+from enum import IntEnum
+from typing import Any, Generator, List, Optional
+
+import scalecodec  # type: ignore
+from ragger.backend.interface import RAPDU, BackendInterface
+from ragger.navigator import NavInsID
+from ragger.navigator.navigation_scenario import NavigationScenarioData, UseCase
+
+from .mintlayer_transaction import Transaction
+
+tx_metadata_obj = scalecodec.base.RuntimeConfiguration().create_scale_object(
+    "TxMetadataReq"
+)
+sign_tx_req_obj = scalecodec.base.RuntimeConfiguration().create_scale_object(
+    "SignTxReq"
+)
+
+MAX_APDU_LEN: int = 255
+TX_RESPONSE_SIZE: int = 71
+
+CLA: int = 0xE1
+
+@dataclass
+class ReviewTransaction:
+    transaction: Transaction
+    has_command_input: bool
+    review_custom_screen_text: str
+
+@dataclass
+class SignTxStep:
+    kind: str
+    index: int | None = None
+
+class GetAppAndVersionP1(IntEnum):
+    # Parameter 1 for first APDU number.
+    P1_START = 0x00
+    P1_NEXT = 0x01
+
+class SignTxP1(IntEnum):
+    # Parameter 1 for first APDU number.
+    P1_START = 0x00
+    P1_NEXT = 0x01
+
+class SignMessageP1(IntEnum):
+    # Parameter 1 for first APDU number.
+    P1_START = 0x00
+    P1_NEXT = 0x01
+
+class GetPublicKeyP1(IntEnum):
+    P1_START = 0x00
+    # Parameter 1 for screen confirmation for GET_PUBLIC_KEY.
+    P1_CONFIRM = 0x01
+
+
+class P2(IntEnum):
+    # Parameter 2 for last APDU to receive.
+    P2_LAST = 0x00
+    # Parameter 2 for more APDU to receive.
+    P2_MORE = 0x80
+
+
+class InsType(IntEnum):
+    GET_PUBLIC_KEY = 0x00
+    SIGN_TX = 0x01
+    SIGN_MESSAGE = 0x02
+
+
+class Errors(IntEnum):
+    SW_DENY = 0x6985
+    SW_CLA_NOT_SUPPORTED = 0x6E00
+    SW_INS_NOT_SUPPORTED = 0x6E01
+    SW_WRONG_P1P2 = 0x6E02
+    SW_WRONG_APDU_LENGTH = 0x6E03
+
+    SW_WRONG_RESPONSE_LENGTH = 0xB000
+    SW_DISPLAY_BIP32_PATH_FAIL = 0xB001
+    SW_WRONG_TX_LENGTH = 0xB002
+    SW_WRONG_CONTEXT = 0xB008
+    SW_DESERIALIZE_FAIL = 0xB009
+    SW_MAX_BUFFER_LEN_EXCEEDED = 0xB012
+
+
+def split_message(message: bytes, max_size: int) -> List[bytes]:
+    return [message[x : x + max_size] for x in range(0, len(message), max_size)]
+
+
+class MintlayerCommandSender:
+    def __init__(self, backend: BackendInterface) -> None:
+        self.backend = backend
+
+    def get_app_and_version(self) -> RAPDU:
+        return self.backend.exchange(
+            cla=0xB0,  # specific CLA for BOLOS
+            ins=0x01,  # specific INS for get_app_and_version
+            p1=GetAppAndVersionP1.P1_START,
+            p2=P2.P2_LAST,
+            data=b"",
+        )
+
+    def get_public_key(self, coin: int, path: str) -> RAPDU:
+        data = coin.to_bytes(1, "little") + pack_derivation_path(path)
+
+        return self.backend.exchange(
+            cla=CLA,
+            ins=InsType.GET_PUBLIC_KEY,
+            p1=GetPublicKeyP1.P1_START,
+            p2=P2.P2_LAST,
+            data=data,
+        )
+
+    @contextmanager
+    def get_public_key_with_confirmation(
+        self, coin: int, path: str
+    ) -> Generator[None, None, None]:
+        data = coin.to_bytes(1, "little") + pack_derivation_path(path)
+
+        with self.backend.exchange_async(
+            cla=CLA,
+            ins=InsType.GET_PUBLIC_KEY,
+            p1=GetPublicKeyP1.P1_CONFIRM,
+            p2=P2.P2_LAST,
+            data=data,
+        ) as response:
+            yield response
+
+    @contextmanager
+    def sign_message(
+        self, coin: int, addr_type: int, path: str, message: bytes
+    ) -> Generator[None, None, None]:
+        data = (
+            coin.to_bytes(1, "little")
+            + addr_type.to_bytes(1, "little")
+            + pack_derivation_path(path)
+        )
+
+        self.backend.exchange(
+            cla=CLA, ins=InsType.SIGN_MESSAGE, p1=SignMessageP1.P1_START, p2=P2.P2_LAST, data=data
+        )
+        chunks = split_message(message, MAX_APDU_LEN)
+
+        for chunk in chunks[:-1]:
+            self.backend.exchange(
+                cla=CLA,
+                ins=InsType.SIGN_MESSAGE,
+                p1=SignMessageP1.P1_NEXT,
+                p2=P2.P2_MORE,
+                data=chunk
+            )
+
+        with self.backend.exchange_async(
+            cla=CLA,
+            ins=InsType.SIGN_MESSAGE,
+            p1=SignMessageP1.P1_NEXT,
+            p2=P2.P2_LAST,
+            data=chunks[-1]
+        ) as response:
+            yield response
+
+    def sign_tx(self, transaction: Transaction) -> Generator[SignTxStep, None, None]:
+        # ---- METADATA ----
+        metadata = tx_metadata_obj.encode(
+            {
+                "coin": transaction.coin,
+                "version": {
+                    "V1": {
+                        "num_inputs": len(transaction.inputs),
+                        "num_outputs": len(transaction.outputs),
+                    },
+                },
+            }
+        ).data
+
+        res = self.backend.exchange(
+            cla=CLA,
+            ins=InsType.SIGN_TX,
+            p1=SignTxP1.P1_START,
+            p2=P2.P2_LAST,
+            data=bytes(metadata),
+        )
+        print("metadata ", res)
+
+        # ---- INPUTS ----
+        print("sending inputs", len(transaction.inputs))
+
+        for inp in transaction.inputs:
+            self._send_chunked_sync(inp)
+
+        # ---- INPUT COMMITMENTS ----
+        print("sending input commitments")
+
+        for inp in transaction.input_commitments[:-1]:
+            self._send_chunked_sync(inp)
+
+        chunks = split_message(transaction.input_commitments[-1], MAX_APDU_LEN)
+
+        # all but last chunk sync
+        for chunk in chunks[:-1]:
+            self.backend.exchange(
+                cla=CLA,
+                ins=InsType.SIGN_TX,
+                p1=SignTxP1.P1_NEXT,
+                p2=P2.P2_MORE,
+                data=chunk,
+            )
+
+        # last chunk async -> UI review
+        with self.backend.exchange_async(
+            cla=CLA,
+            ins=InsType.SIGN_TX,
+            p1=SignTxP1.P1_NEXT,
+            p2=P2.P2_LAST,
+            data=chunks[-1],
+        ):
+            kind = "start"
+            yield SignTxStep(kind=kind, index=0)
+
+
+        # ---- OUTPUTS ----
+        print("streaming outputs")
+
+        for idx, out in enumerate(transaction.outputs):
+            print(f"sending output {idx}")
+
+            chunks = split_message(out, MAX_APDU_LEN)
+
+            # all but last chunk sync
+            for chunk in chunks[:-1]:
+                self.backend.exchange(
+                    cla=CLA,
+                    ins=InsType.SIGN_TX,
+                    p1=SignTxP1.P1_NEXT,
+                    p2=P2.P2_MORE,
+                    data=chunk,
+                )
+
+            # last chunk async -> UI review
+            with self.backend.exchange_async(
+                cla=CLA,
+                ins=InsType.SIGN_TX,
+                p1=SignTxP1.P1_NEXT,
+                p2=P2.P2_LAST,
+                data=chunks[-1],
+            ):
+                kind = "final" if idx == len(transaction.outputs) - 1 else "output"
+                yield SignTxStep(kind=kind, index=idx)
+
+    def _send_chunked_sync(self, data: bytes):
+        chunks = split_message(data, MAX_APDU_LEN)
+
+        for chunk in chunks[:-1]:
+            self.backend.exchange(
+                cla=CLA,
+                ins=InsType.SIGN_TX,
+                p1=SignTxP1.P1_NEXT,
+                p2=P2.P2_MORE,
+                data=chunk,
+            )
+
+        self.backend.exchange(
+            cla=CLA,
+            ins=InsType.SIGN_TX,
+            p1=SignTxP1.P1_NEXT,
+            p2=P2.P2_LAST,
+            data=chunks[-1],
+        )
+
+    def get_async_response(self) -> Optional[RAPDU]:
+        return self.backend.last_async_response
+
+    def get_all_signatures(self, tx: Transaction) -> List[bytes | Any]:
+        if self.backend.last_async_response is None:
+            raise ValueError("None response")
+
+        next_sig = sign_tx_req_obj.encode({"NextSignature": None}).data
+        responses = [self.backend.last_async_response.data]
+        for _ in tx.inputs[1:]:
+            res = self.backend.exchange(
+                cla=CLA,
+                ins=InsType.SIGN_TX,
+                p1=SignTxP1.P1_NEXT,
+                p2=P2.P2_LAST,
+                data=next_sig,
+            )
+            if res is not None:
+                responses.append(res.data)
+            else:
+                raise ValueError("None response")
+        return responses
+
+
+def hardened_index(index: int) -> int:
+    return index | 1 << 31
+
+
+def pack_derivation_path(derivation_path: str) -> bytes:
+    path_obj = scalecodec.base.RuntimeConfiguration().create_scale_object("Bip32Path")
+
+    split = derivation_path.split("/")
+
+    if split[0] != "m":
+        raise ValueError("Error master expected")
+
+    path = []
+    for value in split[1:]:
+        if value == "":
+            raise ValueError(f'Error missing value in split list "{split}"')
+        if value.endswith("'"):
+            path.append(hardened_index(int(value[:-1])))
+        else:
+            path.append(int(value))
+
+    return path_obj.encode(path).data
+
+
+def sign_tx_review(
+    client,
+    device,
+    navigator,
+    scenario_navigator,
+    review_transaction: ReviewTransaction,
+):
+    transaction = review_transaction.transaction
+    has_command_input = review_transaction.has_command_input
+    review_custom_screen_text = review_transaction.review_custom_screen_text
+
+    start_idx = 0
+    if not device.is_nano:
+        instruction = NavInsID.SWIPE_CENTER_TO_LEFT
+    else:
+        instruction = NavInsID.RIGHT_CLICK
+
+    last_page_pattern=r".*\((\d+)/\1\)$"
+
+    for step in client.sign_tx(transaction):
+        print("step kind: ", step.kind)
+        if step.kind == "start":
+            navigator.navigate_and_compare(
+                path=scenario_navigator.screenshot_path,
+                test_case_name=scenario_navigator.test_name,
+                instructions=[instruction],
+                screen_change_before_first_instruction=False,
+                screen_change_after_last_instruction=False,
+                snap_start_idx=start_idx,
+            )
+            start_idx += 10
+
+            if has_command_input:
+                if device.is_nano:
+                    navigator.navigate_until_text_and_compare(
+                        navigate_instruction=instruction,
+                        validation_instructions=[instruction],
+                        text=last_page_pattern,
+                        path=scenario_navigator.screenshot_path,
+                        test_case_name=scenario_navigator.test_name,
+                        screen_change_before_first_instruction=False,
+                        screen_change_after_last_instruction=False,
+                        snap_start_idx=start_idx,
+                    )
+                else:
+                    navigator.navigate_and_compare(
+                        path=scenario_navigator.screenshot_path,
+                        test_case_name=scenario_navigator.test_name,
+                        instructions=[instruction] * 2,
+                        screen_change_before_first_instruction=False,
+                        screen_change_after_last_instruction=False,
+                        snap_start_idx=start_idx,
+                    )
+                start_idx += 10
+
+        if step.kind == "output":
+            if device.is_nano:
+                navigator.navigate_until_text_and_compare(
+                    navigate_instruction=instruction,
+                    validation_instructions=[instruction],
+                    text=last_page_pattern,
+                    path=scenario_navigator.screenshot_path,
+                    test_case_name=scenario_navigator.test_name,
+                    screen_change_before_first_instruction=False,
+                    screen_change_after_last_instruction=False,
+                    snap_start_idx=start_idx,
+                )
+            else:
+                navigator.navigate_and_compare(
+                    path=scenario_navigator.screenshot_path,
+                    test_case_name=scenario_navigator.test_name,
+                    instructions=[instruction] * 2,
+                    screen_change_before_first_instruction=False,
+                    screen_change_after_last_instruction=False,
+                    snap_start_idx=start_idx,
+                )
+            start_idx += 10
+
+        elif step.kind == "final":
+            scenario = NavigationScenarioData(
+                scenario_navigator.device,
+                scenario_navigator.backend,
+                UseCase.TX_REVIEW,
+                True)
+            navigator.navigate_until_text_and_compare(
+                navigate_instruction=scenario.navigation,
+                validation_instructions=scenario.validation,
+                text=review_custom_screen_text,
+                path=scenario_navigator.screenshot_path,
+                test_case_name=scenario_navigator.test_name,
+                screen_change_after_last_instruction=False,
+                snap_start_idx=start_idx,
+                )
+
+    # The device as yielded the result, parse it and ensure that the signature is correct
+    responses = client.get_all_signatures(transaction)
+
+    assert len(responses) == len(transaction.inputs)
+    for response in responses:
+        assert len(response) == TX_RESPONSE_SIZE
diff --git a/tests/application_client/mintlayer_response_unpacker.py b/tests/application_client/mintlayer_response_unpacker.py
new file mode 100644
index 0000000..edb28d4
--- /dev/null
+++ b/tests/application_client/mintlayer_response_unpacker.py
@@ -0,0 +1,86 @@
+from struct import unpack
+from typing import Tuple
+
+import scalecodec  # type: ignore
+
+
+# remainder, data_len, data
+def pop_sized_buf_from_buffer(buffer: bytes, size: int) -> Tuple[bytes, bytes]:
+    return buffer[size:], buffer[0:size]
+
+
+# remainder, data_len, data
+def pop_size_prefixed_buf_from_buf(buffer: bytes) -> Tuple[bytes, int, bytes]:
+    data_len = buffer[0]
+    return buffer[1 + data_len :], data_len, buffer[1 : data_len + 1]
+
+
+# Unpack from response:
+# response = app_name (var)
+def unpack_get_app_name_response(response: bytes) -> str:
+    return response.decode("ascii")
+
+
+# Unpack from response:
+# response = MAJOR (1)
+#            MINOR (1)
+#            PATCH (1)
+def unpack_get_version_response(response: bytes) -> Tuple[int, int, int]:
+    assert len(response) == 3
+    major, minor, patch = unpack("BBB", response)
+    return (major, minor, patch)
+
+
+# Unpack from response:
+# response = format_id (1)
+#            app_name_raw_len (1)
+#            app_name_raw (var)
+#            version_raw_len (1)
+#            version_raw (var)
+#            unused_len (1)
+#            unused (var)
+def unpack_get_app_and_version_response(response: bytes) -> Tuple[str, str]:
+    response, _ = pop_sized_buf_from_buffer(response, 1)
+    response, _, app_name_raw = pop_size_prefixed_buf_from_buf(response)
+    response, _, version_raw = pop_size_prefixed_buf_from_buf(response)
+    response, _, _ = pop_size_prefixed_buf_from_buf(response)
+
+    assert len(response) == 0
+
+    return app_name_raw.decode("ascii"), version_raw.decode("ascii")
+
+
+# Unpack from response:
+def unpack_get_public_key_response(response: bytes) -> Tuple[int, bytes, int, bytes]:
+    response_bytes = scalecodec.base.ScaleBytes(response)
+    response_obj = scalecodec.base.RuntimeConfiguration().create_scale_object(
+        "Response", data=response_bytes
+    )
+    msg = response_obj.decode()
+
+    print(msg)
+
+    pub_key = bytes.fromhex(msg["PublicKey"]["public_key"][2:])
+    pub_key_len = len(pub_key)
+    chain_code = bytes.fromhex(msg["PublicKey"]["chain_code"][2:])
+    chain_code_len = len(chain_code)
+
+    print(pub_key_len, pub_key)
+    print(chain_code_len, chain_code)
+
+    assert pub_key_len == 65
+    assert chain_code_len == 32
+    return pub_key_len, pub_key, chain_code_len, chain_code
+
+
+# Unpack from response:
+def unpack_sign_message_response(response: bytes) -> bytes:
+    response_bytes = scalecodec.base.ScaleBytes(response)
+    response_obj = scalecodec.base.RuntimeConfiguration().create_scale_object(
+        "Response", data=response_bytes
+    )
+    resp = response_obj.decode()
+    assert resp["MessageSignature"] is not None
+    signature = bytes.fromhex(resp["MessageSignature"]["signature"][2:])
+    assert len(signature) == 64
+    return signature
diff --git a/tests/application_client/mintlayer_transaction.py b/tests/application_client/mintlayer_transaction.py
new file mode 100644
index 0000000..acd6ac1
--- /dev/null
+++ b/tests/application_client/mintlayer_transaction.py
@@ -0,0 +1,14 @@
+from dataclasses import dataclass
+from typing import List
+
+
+class TransactionError(Exception):
+    pass
+
+
+@dataclass
+class Transaction:
+    coin: int
+    inputs: List[bytes]
+    input_commitments: List[bytes]
+    outputs: List[bytes]
diff --git a/tests/application_client/mintlayer_utils.py b/tests/application_client/mintlayer_utils.py
new file mode 100644
index 0000000..fd96e62
--- /dev/null
+++ b/tests/application_client/mintlayer_utils.py
@@ -0,0 +1,61 @@
+from io import BytesIO
+from typing import Optional, Literal
+
+
+UINT64_MAX: int = 2**64-1
+UINT32_MAX: int = 2**32-1
+UINT16_MAX: int = 2**16-1
+
+
+def write_varint(n: int) -> bytes:
+    if n < 0xFC:
+        return n.to_bytes(1, byteorder="little")
+
+    if n <= UINT16_MAX:
+        return b"\xFD" + n.to_bytes(2, byteorder="little")
+
+    if n <= UINT32_MAX:
+        return b"\xFE" + n.to_bytes(4, byteorder="little")
+
+    if n <= UINT64_MAX:
+        return b"\xFF" + n.to_bytes(8, byteorder="little")
+
+    raise ValueError(f"Can't write to varint: '{n}'!")
+
+
+def read_varint(buf: BytesIO,
+                prefix: Optional[bytes] = None) -> int:
+    b: bytes = prefix if prefix else buf.read(1)
+
+    if not b:
+        raise ValueError(f"Can't read prefix: '{b.hex()}'!")
+
+    n: int = {b"\xfd": 2, b"\xfe": 4, b"\xff": 8}.get(b, 1)  # default to 1
+
+    b = buf.read(n) if n > 1 else b
+
+    if len(b) != n:
+        raise ValueError("Can't read varint!")
+
+    return int.from_bytes(b, byteorder="little")
+
+
+def read(buf: BytesIO, size: int) -> bytes:
+    b: bytes = buf.read(size)
+
+    if len(b) < size:
+        raise ValueError(f"Can't read {size} bytes in buffer!")
+
+    return b
+
+
+def read_uint(buf: BytesIO,
+              bit_len: int,
+              byteorder: Literal['big', 'little'] = 'little') -> int:
+    size: int = bit_len // 8
+    b: bytes = buf.read(size)
+
+    if len(b) < size:
+        raise ValueError(f"Can't read u{bit_len} in buffer!")
+
+    return int.from_bytes(b, byteorder)
diff --git a/tests/application_client/py.typed b/tests/application_client/py.typed
new file mode 100644
index 0000000..e69de29
diff --git a/tests/boil-freeze.txt b/tests/boil-freeze.txt
new file mode 100644
index 0000000..a74fc92
--- /dev/null
+++ b/tests/boil-freeze.txt
@@ -0,0 +1,60 @@
+aniso8601==9.0.1
+asn1crypto==1.5.1
+attrs==22.2.0
+bip-utils==2.7.0
+cbor2==5.4.6
+certifi==2022.12.7
+cffi==1.15.1
+charset-normalizer==3.0.1
+click==8.1.3
+coincurve==17.0.0
+construct==2.10.68
+crcmod==1.7
+cryptography==39.0.1
+ecdsa==0.16.1
+ed25519-blake2b==1.4
+exceptiongroup==1.1.0
+Flask==2.1.2
+Flask-RESTful==0.3.9
+hidapi==0.13.1
+idna==3.4
+importlib-metadata==6.0.0
+importlib-resources==5.12.0
+iniconfig==2.0.0
+intelhex==2.3.0
+itsdangerous==2.1.2
+Jinja2==3.1.2
+jsonschema==4.17.3
+ledgerwallet==0.2.3
+MarkupSafe==2.1.2
+mnemonic==0.20
+packaging==23.0
+Pillow==9.4.0
+pkg_resources==0.0.0
+pkgutil_resolve_name==1.3.10
+pluggy==1.0.0
+protobuf==3.20.3
+py-sr25519-bindings==0.1.4
+pycparser==2.21
+pycryptodome==3.17
+pyelftools==0.29
+PyNaCl==1.5.0
+PyQt5==5.15.9
+PyQt5-Qt5==5.15.2
+PyQt5-sip==12.11.1
+pyrsistent==0.19.3
+pysha3==1.0.2
+pytesseract==0.3.10
+pytest==7.2.1
+pytz==2022.7.1
+ragger==1.6.0
+requests==2.28.2
+semver==2.13.0
+six==1.16.0
+speculos==0.1.224
+tabulate==0.9.0
+toml==0.10.2
+tomli==2.0.1
+urllib3==1.26.14
+Werkzeug==2.2.3
+zipp==3.15.0
diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 0000000..0315a04
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,19 @@
+import pytest
+from ragger.conftest import configuration
+from ragger.navigator import NavInsID
+
+###########################
+### CONFIGURATION START ###
+###########################
+
+# You can configure optional parameters by overriding the value of ragger.configuration.OPTIONAL_CONFIGURATION
+# Please refer to ragger/conftest/configuration.py for their descriptions and accepted values
+
+configuration.OPTIONAL.CUSTOM_SEED = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about"
+
+#########################
+### CONFIGURATION END ###
+#########################
+
+# Pull all features from the base ragger conftest using the overridden configuration
+pytest_plugins = ("ragger.conftest.base_conftest",)
diff --git a/tests/requirements.txt b/tests/requirements.txt
new file mode 100644
index 0000000..fdc689b
--- /dev/null
+++ b/tests/requirements.txt
@@ -0,0 +1,6 @@
+pytest
+ragger[speculos,ledgerwallet]>=1.21.1
+ecdsa>=0.16.1,<0.17.0
+safe-pysha3>=1.0.0,<2.0.0
+tomli>=2.0.1
+scalecodec>=1.2.11
\ No newline at end of file
diff --git a/tests/setup.cfg b/tests/setup.cfg
new file mode 100644
index 0000000..7d0d7e3
--- /dev/null
+++ b/tests/setup.cfg
@@ -0,0 +1,21 @@
+[tool:pytest]
+addopts = --strict-markers
+
+[pylint]
+disable = C0114,  # missing-module-docstring
+          C0115,  # missing-class-docstring
+          C0116,  # missing-function-docstring
+          C0103,  # invalid-name
+          R0801,  # duplicate-code
+          R0913   # too-many-arguments
+max-line-length=100
+extension-pkg-whitelist=hid
+
+[pycodestyle]
+max-line-length = 100
+
+[mypy-hid.*]
+ignore_missing_imports = True
+
+[mypy-pytest.*]
+ignore_missing_imports = True
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diff --git a/tests/test_app_mainmenu.py b/tests/test_app_mainmenu.py
new file mode 100644
index 0000000..a55bdc3
--- /dev/null
+++ b/tests/test_app_mainmenu.py
@@ -0,0 +1,19 @@
+from ragger.navigator import NavInsID
+
+from utils import ROOT_SCREENSHOT_PATH
+
+
+# In this test we check the behavior of the device main menu
+def test_app_mainmenu(device, navigator, test_name):
+    # Navigate in the main menu
+    if device.is_nano:
+        instructions = [
+            NavInsID.RIGHT_CLICK,
+            NavInsID.RIGHT_CLICK
+        ]
+    else:
+        instructions = [
+            NavInsID.USE_CASE_HOME_SETTINGS,
+        ]
+    navigator.navigate_and_compare(ROOT_SCREENSHOT_PATH, test_name, instructions,
+                                   screen_change_before_first_instruction=False)
diff --git a/tests/test_error_cmd.py b/tests/test_error_cmd.py
new file mode 100644
index 0000000..f9d10a5
--- /dev/null
+++ b/tests/test_error_cmd.py
@@ -0,0 +1,227 @@
+import pytest
+import scalecodec  # type: ignore
+from ragger.error import ExceptionRAPDU
+
+from application_client import MAINNET
+from application_client.mintlayer_command_sender import (CLA, GetAppAndVersionP1, SignTxP1, P2, Errors,
+                                                         InsType)
+
+tx_metadata_obj = scalecodec.base.RuntimeConfiguration().create_scale_object("TxMetadataReq")
+sign_tx_req_obj = scalecodec.base.RuntimeConfiguration().create_scale_object("SignTxReq")
+
+# Ensure the app returns an error when a bad CLA is used
+def test_bad_cla(backend):
+    with pytest.raises(ExceptionRAPDU) as e:
+        backend.exchange(cla=CLA + 1, ins=InsType.GET_PUBLIC_KEY)
+    assert e.value.status == Errors.SW_CLA_NOT_SUPPORTED
+
+
+# Ensure the app returns an error when a bad INS is used
+def test_bad_ins(backend):
+    with pytest.raises(ExceptionRAPDU) as e:
+        backend.exchange(cla=CLA, ins=0xFF)
+    assert e.value.status == Errors.SW_INS_NOT_SUPPORTED
+
+
+# Ensure the app returns an error when a bad P1 or P2 is used
+def test_wrong_p1p2(backend):
+    # Wrong P2
+    with pytest.raises(ExceptionRAPDU) as e:
+        backend.exchange(
+            cla=CLA, ins=InsType.GET_PUBLIC_KEY, p1=GetAppAndVersionP1.P1_START, p2=123
+        )
+    assert e.value.status == Errors.SW_WRONG_P1P2
+
+    backend.exchange(
+            cla=CLA, ins=InsType.GET_PUBLIC_KEY, p1=GetAppAndVersionP1.P1_START, p2=P2.P2_MORE
+        )
+    
+    # Wrong P1 after sending MORE
+    with pytest.raises(ExceptionRAPDU) as e:
+        backend.exchange(
+            cla=CLA, ins=InsType.GET_PUBLIC_KEY, p1=GetAppAndVersionP1.P1_START + 1, p2=P2.P2_MORE
+        )
+    assert e.value.status == Errors.SW_WRONG_P1P2
+
+
+# Ensure the app returns an error when a bad data length is used
+def test_wrong_data_length(backend):
+    # APDUs must be at least 4 bytes: CLA, INS, P1, P2.
+    with pytest.raises(ExceptionRAPDU) as e:
+        backend.exchange_raw(bytes.fromhex("E00300"))
+    assert e.value.status == Errors.SW_WRONG_APDU_LENGTH
+    # APDUs advertises a too long length
+    with pytest.raises(ExceptionRAPDU) as e:
+        backend.exchange_raw(bytes.fromhex("E003000005"))
+    assert e.value.status == Errors.SW_WRONG_APDU_LENGTH
+
+
+# Ensure there is no state confusion when trying wrong APDU sequences
+def test_invalid_state(backend):
+    with pytest.raises(ExceptionRAPDU) as e:
+        backend.exchange(
+            cla=CLA,
+            ins=InsType.SIGN_TX,
+            p1=SignTxP1.P1_NEXT,  # Try to continue a flow instead of start a new one
+            p2=P2.P2_LAST,
+        )
+    assert e.value.status == Errors.SW_WRONG_CONTEXT
+
+
+def test_sign_tx_invalid_coin(backend, scenario_navigator, device, navigator):
+    invalid_coin = 255
+    num_inputs = 1
+    num_outputs = 1
+    metadata = tx_metadata_obj.encode(
+        {
+            "coin": invalid_coin,
+            "version": {
+                "V1": {
+                    "num_inputs": num_inputs,
+                    "num_outputs": num_outputs,
+                },
+            },
+        }
+    ).data
+
+    with pytest.raises(ExceptionRAPDU) as e:
+        res = backend.exchange(
+            cla=CLA,
+            ins=InsType.SIGN_TX,
+            p1=SignTxP1.P1_START,
+            p2=P2.P2_LAST,
+            data=bytes(metadata),
+        )
+
+    assert e.value.status == Errors.SW_DESERIALIZE_FAIL
+
+
+def test_sign_tx_invalid_context(backend, scenario_navigator, device, navigator):
+    """
+    After metadata try to pass an output instead of the input
+    expect an error for wrong context
+    """
+    num_inputs = 2
+    num_outputs = 2
+    metadata = tx_metadata_obj.encode(
+        {
+            "coin": MAINNET,
+            "version": {
+                "V1": {
+                    "num_inputs": num_inputs,
+                    "num_outputs": num_outputs,
+                },
+            },
+        }
+    ).data
+
+    res = backend.exchange(
+        cla=CLA,
+        ins=InsType.SIGN_TX,
+        p1=SignTxP1.P1_START,
+        p2=P2.P2_LAST,
+        data=bytes(metadata),
+    )
+
+    assert res.status == 0x9000
+
+    with pytest.raises(ExceptionRAPDU) as e:
+        res = backend.exchange(
+            cla=CLA,
+            ins=InsType.SIGN_TX,
+            p1=SignTxP1.P1_NEXT,
+            p2=P2.P2_LAST,
+            data=sign_tx_req_obj.encode(
+                {
+                    "Output": {
+                        "out": {
+                            "Transfer": [
+                                {"Coin": 10},
+                                {
+                                    "PublicKey": {
+                                        "key": {"Secp256k1Schnorr": {"pubkey_data": bytes([0] * 33)}}
+                                    }
+                                },
+                            ],
+                        }
+                    }
+                }
+            ).data,
+        )
+    assert e.value.status == Errors.SW_WRONG_CONTEXT
+
+
+def test_sign_tx_invalid_input(backend, scenario_navigator, device, navigator):
+    num_inputs = 2
+    num_outputs = 2
+    metadata = tx_metadata_obj.encode(
+        {
+            "coin": MAINNET,
+            "version": {
+                "V1": {
+                    "num_inputs": num_inputs,
+                    "num_outputs": num_outputs,
+                },
+            },
+        }
+    ).data
+
+    res = backend.exchange(
+        cla=CLA,
+        ins=InsType.SIGN_TX,
+        p1=SignTxP1.P1_START,
+        p2=P2.P2_LAST,
+        data=bytes(metadata),
+    )
+
+    print("res, ", res.status)
+    assert res.status == 0x9000
+
+    with pytest.raises(ExceptionRAPDU) as e:
+        res = backend.exchange(
+            cla=CLA,
+            ins=InsType.SIGN_TX,
+            p1=SignTxP1.P1_NEXT,
+            p2=P2.P2_LAST,
+            data=bytes([0] * 10),
+        )
+
+    assert e.value.status == Errors.SW_DESERIALIZE_FAIL
+
+
+def test_sign_tx_too_large_data(backend, scenario_navigator, device, navigator):
+    num_inputs = 2
+    num_outputs = 2
+    metadata = tx_metadata_obj.encode(
+        {
+            "coin": MAINNET,
+            "version": {
+                "V1": {
+                    "num_inputs": num_inputs,
+                    "num_outputs": num_outputs,
+                },
+            },
+        }
+    ).data
+
+    res = backend.exchange(
+        cla=CLA,
+        ins=InsType.SIGN_TX,
+        p1=SignTxP1.P1_START,
+        p2=P2.P2_LAST,
+        data=bytes(metadata),
+    )
+
+    assert res.status == 0x9000
+
+    with pytest.raises(ExceptionRAPDU) as e:
+        for _ in range(100):
+            res = backend.exchange(
+                cla=CLA,
+                ins=InsType.SIGN_TX,
+                p1=SignTxP1.P1_NEXT,
+                p2=P2.P2_MORE,
+                data=b"big_input_data",
+            )
+
+    assert e.value.status == Errors.SW_MAX_BUFFER_LEN_EXCEEDED
diff --git a/tests/test_name_version.py b/tests/test_name_version.py
new file mode 100644
index 0000000..f822470
--- /dev/null
+++ b/tests/test_name_version.py
@@ -0,0 +1,16 @@
+from application_client.mintlayer_command_sender import MintlayerCommandSender
+from application_client.mintlayer_response_unpacker import \
+    unpack_get_app_and_version_response
+
+
+# Test a specific APDU asking BOLOS (and not the app) the name and version of the current app
+def test_get_app_and_version(backend, backend_name):
+    # Use the app interface instead of raw interface
+    client = MintlayerCommandSender(backend)
+    # Send the special instruction to BOLOS
+    response = client.get_app_and_version()
+    # Use an helper to parse the response, assert the values
+    app_name, version = unpack_get_app_and_version_response(response.data)
+    print(app_name, version)
+    assert app_name == "Mintlayer"
+    assert version == "0.1.0"
diff --git a/tests/test_pubkey_cmd.py b/tests/test_pubkey_cmd.py
new file mode 100644
index 0000000..377aab8
--- /dev/null
+++ b/tests/test_pubkey_cmd.py
@@ -0,0 +1,79 @@
+import pytest
+from ragger.bip import CurveChoice, calculate_public_key_and_chaincode
+from ragger.error import ExceptionRAPDU
+
+from application_client import MAINNET, TESTNET
+from application_client.mintlayer_command_sender import (
+    Errors, MintlayerCommandSender)
+from application_client.mintlayer_response_unpacker import \
+    unpack_get_public_key_response
+
+MNEMONIC = "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about"
+
+
+# In this test we check that the GET_PUBLIC_KEY works in non-confirmation mode
+def test_get_public_key_no_confirm(backend):
+    for path in [
+        "m/44'/19788'/0'/0/0",
+        "m/44'/19788'/0/0/0",
+        "m/44'/19788'/911'/0/0",
+        "m/44'/19788'/255/255/255",
+        "m/44'/19788'/2147483647/0/0/0/0/0/0/0",
+    ]:
+        client = MintlayerCommandSender(backend)
+        response = client.get_public_key(coin=MAINNET, path=path).data
+        _, public_key, _, _ = unpack_get_public_key_response(response)
+
+        ref_public_key, _ = calculate_public_key_and_chaincode(
+            CurveChoice.Secp256k1, path=path, mnemonic=MNEMONIC
+        )
+        assert public_key.hex() == ref_public_key
+
+
+def test_get_public_key_no_confirm_testnet(backend):
+    for path in [
+        "m/44'/1'/0'/0/0",
+        "m/44'/1'/0/0/0",
+        "m/44'/1'/911'/0/0",
+        "m/44'/1'/255/255/255",
+        "m/44'/1'/2147483647/0/0/0/0/0/0/0",
+    ]:
+        client = MintlayerCommandSender(backend)
+        response = client.get_public_key(coin=TESTNET, path=path).data
+        _, public_key, _, _ = unpack_get_public_key_response(response)
+
+        ref_public_key, _ = calculate_public_key_and_chaincode(
+            CurveChoice.Secp256k1, path=path, mnemonic=MNEMONIC
+        )
+        assert public_key.hex() == ref_public_key
+
+
+# In this test we check that the GET_PUBLIC_KEY works in confirmation mode
+def test_get_public_key_confirm_accepted(backend, scenario_navigator):
+    client = MintlayerCommandSender(backend)
+    path = "m/44'/19788'/0'/0/0"
+
+    with client.get_public_key_with_confirmation(coin=MAINNET, path=path):
+        scenario_navigator.address_review_approve()
+
+    response = client.get_async_response().data
+    _, public_key, _, _ = unpack_get_public_key_response(response)
+
+    ref_public_key, _ = calculate_public_key_and_chaincode(
+        CurveChoice.Secp256k1, path=path, mnemonic=MNEMONIC
+    )
+    assert public_key.hex() == ref_public_key
+
+
+# In this test we check that the GET_PUBLIC_KEY in confirmation mode replies an error if the user refuses
+def test_get_public_key_confirm_refused(backend, scenario_navigator):
+    client = MintlayerCommandSender(backend)
+    path = "m/44'/19788'/0'/0/0"
+
+    with pytest.raises(ExceptionRAPDU) as e:
+        with client.get_public_key_with_confirmation(coin=MAINNET, path=path):
+            scenario_navigator.address_review_reject()
+
+    # Assert that we have received a refusal
+    assert e.value.status == Errors.SW_DENY
+    assert len(e.value.data) == 0
diff --git a/tests/test_sign_cmd.py b/tests/test_sign_cmd.py
new file mode 100644
index 0000000..5bf93c0
--- /dev/null
+++ b/tests/test_sign_cmd.py
@@ -0,0 +1,1650 @@
+import pytest
+import scalecodec
+from ragger.navigator import NavIns, NavInsID
+
+from application_client import MAINNET
+from application_client.mintlayer_command_sender import (
+    MintlayerCommandSender,
+    sign_tx_review,
+    ReviewTransaction,
+)
+from application_client.mintlayer_response_unpacker import unpack_get_public_key_response
+from application_client.mintlayer_transaction import Transaction
+
+sign_tx_req_obj = scalecodec.base.RuntimeConfiguration().create_scale_object("SignTxReq")
+
+TX_RESPONSE_SIZE = 71
+
+
+def test_sign_tx_transfer(backend, scenario_navigator, device, navigator):
+    # Use the app interface instead of raw interface
+    client = MintlayerCommandSender(backend)
+    # The path used for this entire test
+    path: str = "m/44'/19788'/0'/0/0"
+
+    # First we need to get the public key of the device in order to build the transaction
+    rapdu = client.get_public_key(coin=MAINNET, path=path)
+    _, public_key, _, _ = unpack_get_public_key_response(rapdu.data)
+
+    print("pk", len(public_key))
+
+    h = 1 << 31
+    additional_info = {
+            "Utxo": {
+                "Transfer": [
+                    {"Coin": 10},
+                    {
+                        "PublicKey": {
+                            "key": {
+                                "Secp256k1Schnorr": {"pubkey_data": bytes([0] * 33)}
+                            }
+                        }
+                    },
+                ],
+            }
+        }
+    inp = sign_tx_req_obj.encode(
+        {
+            "Input": 
+                {
+                    "addresses": [
+                        {"path": [44 + h, 19788 + h, 0 + h, 0, 0], "multisig_idx": None}
+                    ],
+                    "inp": {
+                        "Utxo": [
+                            {
+                                "id": {"Transaction": "0x{}".format(bytes([0] * 32).hex())},
+                                "index": 1,
+                            },
+                            additional_info,
+                        ]
+                    }
+                }
+            }
+        ).data
+    
+    inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": additional_info
+        }
+        ).data
+
+    output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "Transfer": [
+                        {"Coin": 10},
+                        {
+                            "PublicKey": {
+                                "key": {"Secp256k1Schnorr": {"pubkey_data": bytes([0] * 33)}}
+                            }
+                        },
+                    ],
+                }
+            }
+        }
+    ).data
+    # Create the transaction that will be sent to the device for signing
+    transaction = Transaction(
+        coin=MAINNET, inputs=[inp], input_commitments=[inp_commitment], outputs=[output]
+    )
+
+    review_tx = ReviewTransaction(
+        transaction=transaction,
+        has_command_input=False,
+        review_custom_screen_text=r"Sign\stransfer"
+    )
+    sign_tx_review(client, device, navigator, scenario_navigator, review_tx)
+
+
+def test_sign_tx_lock_then_transfer(backend, scenario_navigator, device, navigator):
+    # Use the app interface instead of raw interface
+    client = MintlayerCommandSender(backend)
+    # The path used for this entire test
+    path: str = "m/44'/19788'/0'/0/0"
+
+    h = 1 << 31
+    inp = sign_tx_req_obj.encode(
+        {
+            "Input": 
+                {
+                    "addresses": [
+                        {"path": [44 + h, 19788 + h, 0 + h, 0, 0], "multisig_idx": None}
+                    ],
+                    "inp": {
+                        "Account": {
+                            "nonce": 1,
+                            "account": {"Delegation": [[0] * 32, 11]},
+                        }
+                    },
+                }
+            }
+    ).data
+
+    inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": {"None": None}
+        }
+    ).data
+
+    output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "LockThenTransfer": [
+                        {"Coin": 10},
+                        {
+                            "PublicKey": {
+                                "key": {"Secp256k1Schnorr": {"pubkey_data": bytes([0] * 33)}}
+                            }
+                        },
+                        {"UntilHeight": 10},
+                    ],
+                }
+            }
+        }
+    ).data
+
+    # Create the transaction that will be sent to the device for signing
+    transaction = Transaction(
+        coin=MAINNET, inputs=[inp], input_commitments=[inp_commitment], outputs=[output]
+    )
+
+    review_tx = ReviewTransaction(
+        transaction=transaction,
+        has_command_input=True,
+        review_custom_screen_text=r"Sign\swithdrawal"
+    )
+    sign_tx_review(client, device, navigator, scenario_navigator, review_tx)
+
+
+def test_sign_tx_create_delegation(backend, scenario_navigator, device, navigator):
+    # Use the app interface instead of raw interface
+    client = MintlayerCommandSender(backend)
+    h = 1 << 31
+
+    additional_info = {
+            "Utxo": {
+                "Transfer": [
+                    {"Coin": 10},
+                    {
+                        "PublicKey": {
+                            "key": {
+                                "Secp256k1Schnorr": {"pubkey_data": bytes([0] * 33)}
+                            }
+                        }
+                    },
+                ],
+            }
+        }
+    inp = sign_tx_req_obj.encode(
+        {
+            "Input": 
+                {
+                    "addresses": [
+                        {"path": [44 + h, 19788 + h, 0 + h, 0, 0], "multisig_idx": None}
+                    ],
+                    "inp": {
+                        "Utxo": [
+                            {
+                            "id": {"Transaction": "0x{}".format(bytes([0] * 32).hex())},
+                            "index": 1,
+                            },
+                            additional_info,
+                        ]
+                    },
+                }
+            }
+    ).data
+
+    inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": additional_info
+        }
+    ).data
+
+    output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "CreateDelegationId": [
+                        {
+                            "PublicKey": {
+                                "key": {"Secp256k1Schnorr": {"pubkey_data": bytes([0] * 33)}}
+                            }
+                        },
+                        [0] * 32,
+                    ],
+                }
+            }
+        }
+    ).data
+
+    # Create the transaction that will be sent to the device for signing
+    transaction = Transaction(
+        coin=MAINNET, inputs=[inp], input_commitments=[inp_commitment], outputs=[output]
+    )
+
+    review_tx = ReviewTransaction(
+        transaction=transaction,
+        has_command_input=False,
+        review_custom_screen_text=r"Sign\screate"
+    )
+    sign_tx_review(client, device, navigator, scenario_navigator, review_tx)
+
+
+def test_sign_tx_delegation_staking(backend, scenario_navigator, device, navigator):
+    # Use the app interface instead of raw interface
+    client = MintlayerCommandSender(backend)
+    h = 1 << 31
+
+    additional_info = {
+            "Utxo": {
+                "Transfer": [
+                    {"Coin": 10},
+                    {
+                        "PublicKey": {
+                            "key": {
+                                "Secp256k1Schnorr": {"pubkey_data": bytes([0] * 33)}
+                            }
+                        }
+                    },
+                ],
+            }
+        }
+    inp = sign_tx_req_obj.encode(
+        {
+            "Input": 
+                {
+                    "addresses": [
+                        {"path": [44 + h, 19788 + h, 0 + h, 0, 0], "multisig_idx": None}
+                    ],
+                    "inp": {
+                        "Utxo": [
+                            {
+                                "id": {"Transaction": "0x{}".format(bytes([0] * 32).hex())},
+                                "index": 1,
+                            },
+                            additional_info,
+                        ]
+                    },
+                }
+            }
+    ).data
+
+    inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": additional_info
+        }
+    ).data
+
+    output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "DelegateStaking": [5, [0] * 32],
+                }
+            }
+        }
+    ).data
+
+    # Create the transaction that will be sent to the device for signing
+    transaction = Transaction(
+        coin=MAINNET, inputs=[inp], input_commitments=[inp_commitment], outputs=[output]
+    )
+
+    review_tx = ReviewTransaction(
+        transaction=transaction,
+        has_command_input=False,
+        review_custom_screen_text=r"Sign\sstake"
+    )
+    sign_tx_review(client, device, navigator, scenario_navigator, review_tx)
+
+
+def test_sign_tx_create_stake_pool(backend, scenario_navigator, device, navigator):
+    # Use the app interface instead of raw interface
+    client = MintlayerCommandSender(backend)
+    h = 1 << 31
+    
+    additional_info = {
+            "Utxo": {
+                "Transfer": [
+                    {"Coin": 40001},
+                    {
+                        "PublicKey": {
+                            "key": {
+                                "Secp256k1Schnorr": {"pubkey_data": bytes([0] * 33)}
+                            }
+                        }
+                    },
+                ],
+            }
+        }
+    inp = sign_tx_req_obj.encode(
+        {
+            "Input": 
+                {
+                    "addresses": [
+                        {"path": [44 + h, 19788 + h, 0 + h, 0, 0], "multisig_idx": None}
+                    ],
+                    "inp": {
+                        "Utxo": [
+                            {
+                                "id": {"Transaction": "0x{}".format(bytes([0] * 32).hex())},
+                                "index": 1,
+                            },
+                            additional_info,
+                        ]
+                    },
+                }
+            }
+    ).data
+
+    inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": additional_info
+        }
+    ).data
+
+    output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "CreateStakePool": [
+                        [0] * 32,
+                        {
+                            "value": 40000,
+                            "staker": {
+                                "PublicKey": {
+                                    "key": {
+                                        "Secp256k1Schnorr": {"pubkey_data": bytes([0] * 33)}
+                                    }
+                                }
+                            },
+                            "vrf_public_key": {"key": {"Schnorrkel": {"key": bytes([0] * 32)}}},
+                            "decommission_key": {
+                                "PublicKey": {
+                                    "key": {
+                                        "Secp256k1Schnorr": {"pubkey_data": bytes([0] * 33)}
+                                    }
+                                }
+                            },
+                            "margin_ratio_per_thousand": 10,
+                            "cost_per_block": 5,
+                        },
+                    ],
+                }
+            }
+        }
+    ).data
+    # Create the transaction that will be sent to the device for signing
+    transaction = Transaction(
+        coin=MAINNET, inputs=[inp], input_commitments=[inp_commitment], outputs=[output]
+    )
+
+    review_tx = ReviewTransaction(
+        transaction=transaction,
+        has_command_input=False,
+        review_custom_screen_text=r"Sign\screate\sstake"
+    )
+    sign_tx_review(client, device, navigator, scenario_navigator, review_tx)
+
+
+def test_sign_tx_issue_fungible_token(backend, scenario_navigator, device, navigator):
+    # Use the app interface instead of raw interface
+    client = MintlayerCommandSender(backend)
+    h = 1 << 31
+    additional_info = {
+            "Utxo": {
+                "Transfer": [
+                    {"Coin": 10},
+                    {
+                        "PublicKey": {
+                            "key": {
+                                "Secp256k1Schnorr": {"pubkey_data": bytes([0] * 33)}
+                            }
+                        }
+                    },
+                ],
+            }
+        }
+    inp = sign_tx_req_obj.encode(
+        {
+            "Input": 
+                {
+                    "addresses": [
+                        {"path": [44 + h, 19788 + h, 0 + h, 0, 0], "multisig_idx": None}
+                    ],
+                    "inp": {
+                        "Utxo": [
+                            {
+                                "id": {"Transaction": "0x{}".format(bytes([0] * 32).hex())},
+                                "index": 1,
+                            },
+                            additional_info,
+                        ]
+                    },
+                }
+            }
+    ).data
+
+    inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": additional_info
+        }
+    ).data
+
+    output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "IssueFungibleToken": {
+                        "V1": {
+                            "token_ticker": b"MYTKN",
+                            "number_of_decimals": 8,
+                            "metadata_uri": b"https://my.token.uri",
+                            "total_supply": {"Fixed": 1000000000},
+                            "authority": {
+                                "PublicKey": {
+                                    "key": {
+                                        "Secp256k1Schnorr": {"pubkey_data": bytes([0] * 33)}
+                                    }
+                                }
+                            },
+                            "is_freezable": {"Yes": None},
+                        }
+                    },
+                }
+            }
+        }
+    ).data
+
+    # Create the transaction that will be sent to the device for signing
+    transaction = Transaction(
+        coin=MAINNET, inputs=[inp], input_commitments=[inp_commitment], outputs=[output]
+    )
+
+    review_tx = ReviewTransaction(
+        transaction=transaction,
+        has_command_input=False,
+        review_custom_screen_text=r"Sign\screate\stoken"
+    )
+    sign_tx_review(client, device, navigator, scenario_navigator, review_tx)
+
+
+def test_sign_tx_issue_nft(backend, scenario_navigator, device, navigator):
+    # Use the app interface instead of raw interface
+    client = MintlayerCommandSender(backend)
+    h = 1 << 31
+    additional_info = {
+            "Utxo": {
+                "Transfer": [
+                    {"Coin": 2000},
+                    {
+                        "PublicKey": {
+                            "key": {
+                                "Secp256k1Schnorr": {"pubkey_data": bytes([0] * 33)}
+                            }
+                        }
+                    },
+                ],
+            }
+        }
+    inp = sign_tx_req_obj.encode(
+        {
+            "Input": 
+                {
+                    "addresses": [
+                        {"path": [44 + h, 19788 + h, 0 + h, 0, 0], "multisig_idx": None}
+                    ],
+                    "inp": {
+                        "Utxo": [
+                            {
+                                "id": {"Transaction": "0x{}".format(bytes([0] * 32).hex())},
+                                "index": 1,
+                            },
+                            additional_info,
+                        ]
+                    },
+                }
+            }
+    ).data
+
+    inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": additional_info
+        }
+    ).data
+
+    # This is the new output for issuing an NFT.
+    # The structure is (TokenId, NftIssuance, Destination)
+    output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "IssueNft": [
+                        bytes([0] * 32),
+                        {
+                            "V0": {
+                                "metadata": {
+                                    "creator": {
+                                        "public_key": {
+                                            "key": {
+                                                "Secp256k1Schnorr": {
+                                                    "pubkey_data": bytes([0] * 33)
+                                                }
+                                            }
+                                        }
+                                    },
+                                    "name": b"MyAwesomeNFT",
+                                    "description": b"FirstNFT",
+                                    "ticker": b"MNFT1",
+                                    "icon_uri": b"https://my.nft/icon.png",
+                                    "additional_metadata_uri": b"https://my.nft/meta.json",
+                                    "media_uri": b"https://my.nft/media.jpg",
+                                    "media_hash": bytes([0] * 32),
+                                }
+                            }
+                        },
+                        {
+                            "PublicKey": {
+                                "key": {"Secp256k1Schnorr": {"pubkey_data": bytes([0] * 33)}}
+                            }
+                        },
+                    ],
+                }
+            }
+        }
+    ).data
+
+    # Create the transaction that will be sent to the device for signing
+    transaction = Transaction(
+        coin=MAINNET, inputs=[inp], input_commitments=[inp_commitment], outputs=[output]
+    )
+
+    review_tx = ReviewTransaction(
+        transaction=transaction,
+        has_command_input=False,
+        review_custom_screen_text=r"Sign\screate\sNFT"
+    )
+    sign_tx_review(client, device, navigator, scenario_navigator, review_tx)
+
+
+def test_sign_tx_mint_tokens(backend, scenario_navigator, device, navigator):
+    """
+    Test signing a transaction with two inputs:
+    1. A standard UTXO input.
+    2. An AccountCommand input to mint new tokens.
+    And one output to transfer the newly minted tokens.
+    """
+    client = MintlayerCommandSender(backend)
+    h = 1 << 31
+    bip44_path = [44 + h, 19788 + h, 0 + h, 0, 0]
+
+    # The utxo (the previous TxOutput that this UTXO input spends)
+    # This represents an output of 100 coins owned by our key
+    additional_info = {
+            "Utxo": {
+                "Transfer": [
+                    {"Coin": 100},
+                    {
+                        "PublicKey": {
+                            "key": {
+                                "Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}
+                            }
+                        }
+                    },
+                ],
+            }
+        }
+    utxo_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "Utxo": [
+                        {
+                            "id": {"Transaction": f"0x{bytes([1]*32).hex()}"},
+                            "index": 0,
+                        },
+                        additional_info,
+                    ]
+                },
+            }
+        }
+    ).data
+
+    inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": additional_info
+        }
+    ).data
+
+    # This is the AccountCommand to mint 1000 units of a new token
+    account_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "AccountCommand": [
+                        1,  # AccountNonce
+                        {
+                            "MintTokens": [
+                                f"0x{bytes([0]*32).hex()}",  # TokenId
+                                1000,  # Amount to mint
+                            ]
+                        },
+                    ]
+                },
+            }
+        }
+    ).data
+
+    acc_inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": {"None": None}
+        }
+    ).data
+
+    mint_output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "Transfer": [
+                        {"TokenV1": [f"0x{bytes([0]*32).hex()}", 1000]},
+                        {
+                            "PublicKey": {
+                                "key": {"Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}}
+                            }
+                        },
+                    ],
+                }
+            }
+        }
+    ).data
+
+    transaction = Transaction(
+        coin=MAINNET,
+        inputs=[utxo_input, account_input],
+        input_commitments=[inp_commitment, acc_inp_commitment],
+        outputs=[mint_output],
+    )
+
+    review_tx = ReviewTransaction(
+        transaction=transaction,
+        has_command_input=True,
+        review_custom_screen_text=r"Sign\smint\stokens"
+    )
+    sign_tx_review(client, device, navigator, scenario_navigator, review_tx)
+
+
+def test_sign_tx_unmint_tokens(backend, scenario_navigator, device, navigator):
+    """
+    Test signing a transaction with two inputs:
+    1. A standard UTXO input to pay tx fees.
+    2. An AccountCommand input to unmint new tokens.
+    3. A standard UTXO input with tokens to unmint
+    And one output to transfer the newly minted tokens.
+    """
+    client = MintlayerCommandSender(backend)
+    h = 1 << 31
+    bip44_path = [44 + h, 19788 + h, 0 + h, 0, 0]
+
+    # The additional data (the previous TxOutput that this UTXO input spends)
+    # This represents an output of 100 coins owned by our key
+    additional_info = {
+            "Utxo": {
+                "Transfer": [
+                    {"Coin": 100},
+                    {
+                        "PublicKey": {
+                            "key": {
+                                "Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}
+                            }
+                        }
+                    },
+                ],
+            }
+        }
+    additional_info2 = {
+            "Utxo": {
+                "Transfer": [
+                    {"TokenV1": [f"0x{bytes([0]*32).hex()}", 1000]},
+                    {
+                        "PublicKey": {
+                            "key": {
+                                "Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}
+                            }
+                        }
+                    },
+                ],
+            }
+        }
+    utxo_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "Utxo": [
+                        {
+                            "id": {"Transaction": f"0x{bytes([1]*32).hex()}"},
+                            "index": 0,
+                        },
+                        additional_info,
+                    ]
+                },
+            }
+        }
+    ).data
+
+    inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": additional_info,
+        }
+    ).data
+
+    utxo_input2 = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "Utxo": [
+                        {
+                            "id": {"Transaction": f"0x{bytes([1]*32).hex()}"},
+                            "index": 2,
+                        },
+                        additional_info2,
+                    ]
+                },
+            }
+        }
+    ).data
+
+    inp_commitment2 = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": additional_info2,
+        }
+    ).data
+
+    account_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "AccountCommand": [
+                        1,  # AccountNonce
+                        {
+                            "UnmintTokens": f"0x{bytes([0]*32).hex()}",  # TokenId
+                        },
+                    ]
+                },
+            }
+        }
+    ).data
+
+    acc_inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": {"None": None}
+        }
+    ).data
+
+    change_output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "Transfer": [
+                        {"Coin": 99},
+                        {
+                            "PublicKey": {
+                                "key": {"Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}}
+                            }
+                        },
+                    ],
+                }
+            }
+        }
+    ).data
+
+    transaction = Transaction(
+        coin=MAINNET,
+        inputs=[utxo_input, account_input, utxo_input2],
+        input_commitments=[inp_commitment, acc_inp_commitment, inp_commitment2],
+        outputs=[change_output],
+    )
+
+    review_tx = ReviewTransaction(
+        transaction=transaction,
+        has_command_input=True,
+        review_custom_screen_text=r"Sign\sunmint\stokens"
+    )
+    sign_tx_review(client, device, navigator, scenario_navigator, review_tx)
+
+
+def test_sign_tx_freeze_tokens(backend, scenario_navigator, device, navigator):
+    """
+    Test signing a transaction with two inputs:
+    1. A standard UTXO input to pay for tx fees.
+    2. An AccountCommand input to freeze the tokens.
+    And one output to transfer the change coins.
+    """
+    client = MintlayerCommandSender(backend)
+    h = 1 << 31
+    bip44_path = [44 + h, 19788 + h, 0 + h, 0, 0]
+
+    # The additional info (the previous TxOutput that this UTXO input spends)
+    # This represents an output of 100 coins owned by our key
+    additional_info = {
+            "Utxo": {
+                "Transfer": [
+                    {"Coin": 100},
+                    {
+                        "PublicKey": {
+                            "key": {
+                                "Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}
+                            }
+                        }
+                    },
+                ],
+            }
+        }
+
+    utxo_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "Utxo": [
+                        {
+                            "id": {"Transaction": f"0x{bytes([1]*32).hex()}"},
+                            "index": 0,
+                        },
+                        additional_info,
+                    ]
+                },
+            }
+        }
+    ).data
+
+    inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": additional_info,
+        }
+    ).data
+
+    # This is the AccountCommand to mint 1000 units of a new token
+    account_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "AccountCommand": [
+                        1,  # AccountNonce
+                        {"FreezeToken": [f"0x{bytes([0]*32).hex()}", {"No": None}]},  # TokenId
+                    ]
+                },
+            }
+        }
+    ).data
+
+    acc_inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": {"None": None}
+        }
+    ).data
+
+    change_output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "Transfer": [
+                        {"Coin": 99},
+                        {
+                            "PublicKey": {
+                                "key": {"Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}}
+                            }
+                        },
+                    ],
+                }
+            }
+        }
+    ).data
+
+    transaction = Transaction(
+        coin=MAINNET,
+        inputs=[utxo_input, account_input],
+        input_commitments=[inp_commitment, acc_inp_commitment],
+        outputs=[change_output],
+    )
+
+    review_tx = ReviewTransaction(
+        transaction=transaction,
+        has_command_input=True,
+        review_custom_screen_text=r"Sign\sfreeze\stokens"
+    )
+    sign_tx_review(client, device, navigator, scenario_navigator, review_tx)
+
+
+def test_sign_tx_unfreeze_tokens(backend, scenario_navigator, device, navigator):
+    """
+    Test signing a transaction with two inputs:
+    1. A standard UTXO input to pay for tx fees.
+    2. An AccountCommand input to unfreeze the tokens.
+    And one output to transfer the change coins.
+    """
+    client = MintlayerCommandSender(backend)
+    h = 1 << 31
+    bip44_path = [44 + h, 19788 + h, 0 + h, 0, 0]
+
+    # The additional data (the previous TxOutput that this UTXO input spends)
+    # This represents an output of 100 coins owned by our key
+    additional_info = {
+            "Utxo": {
+                "Transfer": [
+                    {"Coin": 100},
+                    {
+                        "PublicKey": {
+                            "key": {
+                                "Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}
+                            }
+                        }
+                    },  
+                ],
+            }
+        }
+    utxo_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "Utxo": [
+                        {
+                            "id": {"Transaction": f"0x{bytes([1]*32).hex()}"},
+                            "index": 0,
+                        },
+                        additional_info,
+                    ]
+                },
+            }
+        }).data
+
+    inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": additional_info,
+        }
+    ).data
+
+    # This is the AccountCommand to mint 1000 units of a new token
+    account_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "AccountCommand": [
+                        1,  # AccountNonce
+                        {
+                            "UnfreezeToken": f"0x{bytes([0]*32).hex()}",  # TokenId
+                        },
+                    ]
+                },
+            }
+        }
+    ).data
+
+    acc_inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": {"None": None}
+        }
+    ).data
+
+    change_output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "Transfer": [
+                        {"Coin": 99},
+                        {
+                            "PublicKey": {
+                                "key": {"Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}}
+                            }
+                        },
+                    ],
+                }
+            }
+        }
+    ).data
+
+    transaction = Transaction(
+        coin=MAINNET,
+        inputs=[utxo_input, account_input],
+        input_commitments=[inp_commitment, acc_inp_commitment],
+        outputs=[change_output],
+    )
+
+    review_tx = ReviewTransaction(
+        transaction=transaction,
+        has_command_input=True,
+        review_custom_screen_text=r"Sign\sunfreeze"
+    )
+    sign_tx_review(client, device, navigator, scenario_navigator, review_tx)
+
+
+def test_sign_tx_change_token_authority(backend, scenario_navigator, device, navigator):
+    """
+    Test signing a transaction with two inputs:
+    1. A standard UTXO input to pay for tx fees.
+    2. An AccountCommand input to change the token's authority.
+    And one output to transfer the change coins.
+    """
+    client = MintlayerCommandSender(backend)
+    h = 1 << 31
+    bip44_path = [44 + h, 19788 + h, 0 + h, 0, 0]
+
+    # The additional data (the previous TxOutput that this UTXO input spends)
+    # This represents an output of 100 coins owned by our key
+    additional_info = {
+            "Utxo": {
+                "Transfer": [
+                    {"Coin": 100},
+                    {
+                        "PublicKey": {
+                            "key": {
+                                "Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}
+                            }
+                        }
+                    },
+                ],
+            }
+        }
+    utxo_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "Utxo": [
+                        {
+                            "id": {"Transaction": f"0x{bytes([1]*32).hex()}"},
+                            "index": 0,
+                        },
+                        additional_info,
+                    ]
+                },
+            }
+        }).data
+
+    inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": additional_info,
+        }
+    ).data
+
+    # This is the AccountCommand to mint 1000 units of a new token
+    account_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "AccountCommand": [
+                        1,  # AccountNonce
+                        {
+                            "ChangeTokenAuthority": [
+                                f"0x{bytes([0]*32).hex()}",  # TokenId
+                                {
+                                    "PublicKey": {
+                                        "key": {
+                                            "Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}
+                                        }
+                                    }
+                                },
+                            ]
+                        },
+                    ]
+                },
+            }
+        }
+    ).data
+
+    acc_inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": {"None": None}
+        }
+    ).data
+
+    change_output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "Transfer": [
+                        {"Coin": 99},
+                        {
+                            "PublicKey": {
+                                "key": {"Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}}
+                            }
+                        },
+                    ],
+                }
+            }
+        }
+    ).data
+
+    transaction = Transaction(
+        coin=MAINNET,
+        inputs=[utxo_input, account_input],
+        input_commitments=[inp_commitment, acc_inp_commitment],
+        outputs=[change_output],
+    )
+
+    review_tx = ReviewTransaction(
+        transaction=transaction,
+        has_command_input=True,
+        review_custom_screen_text=r"Sign\schange\stoken"
+    )
+    sign_tx_review(client, device, navigator, scenario_navigator, review_tx)
+
+
+def test_sign_tx_change_token_metadata_uri(
+    backend, scenario_navigator, device, navigator
+):
+    """
+    Test signing a transaction with two inputs:
+    1. A standard UTXO input to pay for tx fees.
+    2. An AccountCommand input to change the token's metadata uri.
+    And one output to transfer the change coins.
+    """
+    client = MintlayerCommandSender(backend)
+    h = 1 << 31
+    bip44_path = [44 + h, 19788 + h, 0 + h, 0, 0]
+
+    # The additional info (the previous TxOutput that this UTXO input spends)
+    # This represents an output of 100 coins owned by our key
+    additional_info = {
+            "Utxo": {
+                "Transfer": [
+                    {"Coin": 100},
+                    {
+                        "PublicKey": {
+                            "key": {
+                                "Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}
+                            }
+                        }
+                    },
+                ],
+            }
+        }
+    utxo_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "Utxo": [
+                        {
+                            "id": {"Transaction": f"0x{bytes([1]*32).hex()}"},
+                            "index": 0,
+                        },
+                        additional_info,
+                    ]
+                },
+            }
+        }
+    ).data
+
+    inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": additional_info,
+        }
+    ).data
+
+    # This is the AccountCommand to mint 1000 units of a new token
+    account_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "AccountCommand": [
+                        1,  # AccountNonce
+                        {
+                            "ChangeTokenMetadataUri": [
+                                f"0x{bytes([0]*32).hex()}",  # TokenId
+                                "uri.com".encode(),
+                            ]
+                        },
+                    ]
+                },
+            }
+        }
+    ).data
+
+    acc_inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": {"None": None}
+        }
+    ).data
+
+    change_output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "Transfer": [
+                        {"Coin": 99},
+                        {
+                            "PublicKey": {
+                                "key": {"Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}}
+                            }
+                        },
+                    ],
+                }
+            }
+        }
+    ).data
+
+    transaction = Transaction(
+        coin=MAINNET,
+        inputs=[utxo_input, account_input],
+        input_commitments=[inp_commitment, acc_inp_commitment],
+        outputs=[change_output],
+    )
+
+    review_tx = ReviewTransaction(
+        transaction=transaction,
+        has_command_input=True,
+        review_custom_screen_text=r"Sign\schange\stoken"
+    )
+    sign_tx_review(client, device, navigator, scenario_navigator, review_tx)
+
+
+def test_sign_tx_order_fill(backend, scenario_navigator, device, navigator):
+    """
+    Test signing a transaction with two inputs:
+    1. A standard UTXO input to pay for tx fees.
+    2. An AccountCommand input to fill an order.
+    3. A standard UTXO input to be used for the fill.
+    And one output to transfer the change coins.
+    """
+    client = MintlayerCommandSender(backend)
+    h = 1 << 31
+    bip44_path = [44 + h, 19788 + h, 0 + h, 0, 0]
+
+    # The additionl info (the previous TxOutput that this UTXO input spends)
+    # This represents an output of 100 coins owned by our key
+    additional_info = {
+            "Utxo": {
+                "Transfer": [
+                    {"Coin": 100},
+                    {
+                        "PublicKey": {
+                            "key": {
+                                "Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}
+                            }
+                        }
+                    },
+                ],
+            }
+        }
+    utxo_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "Utxo": [
+                        {
+                            "id": {"Transaction": f"0x{bytes([1]*32).hex()}"},
+                            "index": 0,
+                        },
+                        additional_info,
+                    ]
+                },
+            }
+        }
+    ).data
+
+    inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": additional_info,
+        }
+    ).data
+
+    fill_amount = 10
+    fill_ask = 100
+    fill_give = 1000
+
+    additional_order_info = {
+           "initially_asked": {"Coin": fill_ask},
+           "initially_given": {"TokenV1": [f"0x{bytes([0]*32).hex()}", fill_give]},
+           "ask_balance": 0,
+           "give_balance": 0,
+    }
+    # This is the OrderAccountCommand to fill 10 units
+    account_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "OrderAccountCommand": [
+                        {
+                            "FillOrder": [
+                                f"0x{bytes([0]*32).hex()}",  # OrderId
+                                fill_amount,
+                            ]
+                        },
+                        additional_order_info,
+                    ]
+                },
+            }
+        }
+    ).data
+
+    fill_order_inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": {
+                "FillOrderAccountCommand": [
+                    additional_order_info["initially_asked"],
+                    additional_order_info["initially_given"],
+                ]
+            },
+        }
+    ).data
+
+    change_output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "Transfer": [
+                        {"Coin": 100 - 1 - fill_amount},
+                        {
+                            "PublicKey": {
+                                "key": {"Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}}
+                            }
+                        },
+                    ],
+                }
+            }
+        }
+    ).data
+
+    fill_output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "Transfer": [
+                        {
+                            "TokenV1": [
+                                f"0x{bytes([0]*32).hex()}",
+                                fill_amount * fill_give // fill_ask,
+                            ]
+                        },
+                        {
+                            "PublicKey": {
+                                "key": {"Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}}
+                            }
+                        },
+                    ],
+                }
+            }
+        }
+    ).data
+
+    transaction = Transaction(
+        coin=MAINNET,
+        inputs=[utxo_input, account_input],
+        input_commitments=[inp_commitment, fill_order_inp_commitment],
+        outputs=[change_output, fill_output],
+    )
+
+    review_tx = ReviewTransaction(
+        transaction=transaction,
+        has_command_input=True,
+        review_custom_screen_text=r"Sign\sfill\sorder"
+    )
+    sign_tx_review(client, device, navigator, scenario_navigator, review_tx)
+
+
+def test_sign_tx_order_conclude(backend, scenario_navigator, device, navigator):
+    """
+    Test signing a transaction with two inputs:
+    1. A standard UTXO input to pay for tx fees.
+    2. An OrderAccountCommand input to conclude an order.
+    And one output to transfer the change coins + ask balance and another output for the give balance.
+    """
+    client = MintlayerCommandSender(backend)
+    h = 1 << 31
+    bip44_path = [44 + h, 19788 + h, 0 + h, 0, 0]
+
+    # The additional_data (the previous TxOutput that this UTXO input spends)
+    # This represents an output of 100 coins owned by our key
+    additional_info = {
+            "Utxo": {
+                "Transfer": [
+                    {"Coin": 100},
+                    {
+                        "PublicKey": {
+                            "key": {
+                                "Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}
+                            }
+                        }
+                    },
+                ],
+            }
+        }
+    utxo_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "Utxo": [
+                        {
+                            "id": {"Transaction": f"0x{bytes([1]*32).hex()}"},
+                            "index": 0,
+                        },
+                        additional_info,
+                    ]
+                },
+            }
+        }
+    ).data
+
+    inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": additional_info,
+        }
+    ).data
+
+    initial_ask = 100
+    initial_give = 1000
+    ask_balance = 10
+    give_balance = 900
+
+    additional_order_info = {
+           "initially_asked": {"Coin": initial_ask},
+           "initially_given": {"TokenV1": [f"0x{bytes([0]*32).hex()}", initial_give]},
+           "ask_balance": ask_balance,
+           "give_balance": give_balance,
+    }
+
+    # This is the OrderAccountCommand to fill 10 units
+    account_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "OrderAccountCommand": [
+                        {
+                            "ConcludeOrder": f"0x{bytes([0]*32).hex()}",  # OrderId
+                        },
+                        additional_order_info,
+                    ]
+                },
+            }
+        }
+    ).data
+
+    conclude_order_inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": {
+                "ConcludeOrderAccountCommand": [
+                    additional_order_info["initially_asked"],
+                    additional_order_info["initially_given"],
+                    additional_order_info["ask_balance"],
+                    additional_order_info["give_balance"]
+                ]
+            },
+        }
+    ).data
+
+    change_output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "Transfer": [
+                        {"Coin": 100 - 1 + ask_balance},
+                        {
+                            "PublicKey": {
+                                "key": {"Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}}
+                            }
+                        },
+                    ],
+                }
+            }
+        }
+    ).data
+
+    conclude_output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "Transfer": [
+                        {"TokenV1": [f"0x{bytes([0]*32).hex()}", give_balance]},
+                        {
+                            "PublicKey": {
+                                "key": {"Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}}
+                            }
+                        },
+                    ],
+                }
+            }
+        }
+    ).data
+
+    transaction = Transaction(
+        coin=MAINNET,
+        inputs=[utxo_input, account_input],
+        input_commitments=[inp_commitment, conclude_order_inp_commitment],
+        outputs=[change_output, conclude_output],
+    )
+
+    review_tx = ReviewTransaction(
+        transaction=transaction,
+        has_command_input=True,
+        review_custom_screen_text=r"Sign\sconclude\sorder"
+    )
+    sign_tx_review(client, device, navigator, scenario_navigator, review_tx)
+
+
+def test_sign_tx_htlc(backend, scenario_navigator, device, navigator):
+    """
+    Test signing a transaction with one input:
+    1. The standard UTXO input to pay for tx fees.
+    And one output to transfer the change coins and the HTLC output.
+    """
+    client = MintlayerCommandSender(backend)
+    h = 1 << 31
+    bip44_path = [44 + h, 19788 + h, 0 + h, 0, 0]
+
+    # The additional info (the previous TxOutput that this UTXO input spends)
+    # This represents an output of 100 coins owned by our key
+    additional_info = {
+            "Utxo": {
+                "Transfer": [
+                    {"Coin": 100},
+                    {
+                        "PublicKey": {
+                            "key": {
+                                "Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}
+                            }
+                        }
+                    },
+                ],
+            }
+        }
+    utxo_input = sign_tx_req_obj.encode(
+        {
+            "Input": {
+                "addresses": [{"path": bip44_path, "multisig_idx": None}],
+                "inp": {
+                    "Utxo": [
+                        {
+                            "id": {"Transaction": f"0x{bytes([1]*32).hex()}"},
+                            "index": 0,
+                        },
+                        additional_info,
+                    ]
+                },
+            }
+        }
+    ).data
+
+    inp_commitment = sign_tx_req_obj.encode(
+        {
+            "InputCommitment": additional_info,
+        }
+    ).data
+
+    change_output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "Transfer": [
+                        {"Coin": 89},
+                        {
+                            "PublicKey": {
+                                "key": {"Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}}
+                            }
+                        },
+                    ],
+                }
+            }
+        }
+    ).data
+
+    htlc_output = sign_tx_req_obj.encode(
+        {
+            "Output": {
+                "out": {
+                    "Htlc": [
+                        {"Coin": 10},
+                        {
+                            "secret_hash": [0] * 20,
+                            "spend_key": {
+                                "PublicKey": {
+                                    "key": {
+                                        "Secp256k1Schnorr": {"pubkey_data": bytes([2] * 33)}
+                                    }
+                                }
+                            },
+                            "refund_timelock": {"UntilHeight": 100},
+                            "refund_key": {
+                                "PublicKey": {
+                                    "key": {
+                                        "Secp256k1Schnorr": {"pubkey_data": bytes([3] * 33)}
+                                    }
+                                }
+                            },
+                        },
+                    ],
+                }
+            }
+        }
+    ).data
+
+    transaction = Transaction(
+        coin=MAINNET,
+        inputs=[utxo_input],
+        input_commitments=[inp_commitment],
+        outputs=[htlc_output, change_output],
+    )
+
+    review_tx = ReviewTransaction(
+        transaction=transaction,
+        has_command_input=False,
+        review_custom_screen_text=r"Sign\screate\sHTLC"
+    )
+    sign_tx_review(client, device, navigator, scenario_navigator, review_tx)
diff --git a/tests/test_sign_message.py b/tests/test_sign_message.py
new file mode 100644
index 0000000..16d8406
--- /dev/null
+++ b/tests/test_sign_message.py
@@ -0,0 +1,48 @@
+import pytest
+from ragger.error import ExceptionRAPDU
+
+from application_client import MAINNET
+from application_client.mintlayer_command_sender import (
+    Errors, MintlayerCommandSender)
+from application_client.mintlayer_response_unpacker import (
+    unpack_sign_message_response,
+)
+
+
+# In this test we check that the message signing works
+def test_sign_message(backend, scenario_navigator):
+    path = "m/44'/19788'/0'/0/0"
+    message = b"Hello"
+    client = MintlayerCommandSender(backend)
+    with client.sign_message(coin=MAINNET, addr_type=0, path=path, message=message):
+        scenario_navigator.review_approve()
+
+    sig = unpack_sign_message_response(client.get_async_response().data)
+    assert len(sig) == 64
+
+def test_sign_message_pkh(backend, scenario_navigator):
+    path = "m/44'/19788'/0'/0/0"
+    message = b"Hello"
+    client = MintlayerCommandSender(backend)
+    with client.sign_message(coin=MAINNET, addr_type=1, path=path, message=message):
+        scenario_navigator.review_approve()
+
+    sig = unpack_sign_message_response(client.get_async_response().data)
+    assert len(sig) == 64
+
+
+# Message signing refused test
+# The test will ask for a message signature that will be refused on screen
+def test_sign_message_refused(backend, scenario_navigator):
+    # Use the app interface instead of raw interface
+    client = MintlayerCommandSender(backend)
+    path: str = "m/44'/19788'/0'/0/0"
+    message: bytes = b"Hello"
+
+    with pytest.raises(ExceptionRAPDU) as e:
+        with client.sign_message(coin=MAINNET, addr_type=0, path=path, message=message):
+            scenario_navigator.review_reject()
+
+    # Assert that we have received a refusal
+    assert e.value.status == Errors.SW_DENY
+    assert len(e.value.data) == 0
diff --git a/tests/usage.md b/tests/usage.md
new file mode 100644
index 0000000..201d146
--- /dev/null
+++ b/tests/usage.md
@@ -0,0 +1,74 @@
+# How to use the Ragger test framework
+
+This framework allows testing the application on the Speculos emulator or on a real device using LedgerComm or LedgerWallet
+
+
+## Quickly get started with Ragger and Speculos
+
+### Install ragger and dependencies
+
+```
+pip install --extra-index-url https://test.pypi.org/simple/ -r requirements.txt
+sudo apt-get update && sudo apt-get install qemu-user-static
+```
+
+### Compile the application
+
+The application to test must be compiled for all required devices.
+You can use for this the container `ghcr.io/ledgerhq/ledger-app-builder/ledger-app-builder-lite`:
+```
+docker pull ghcr.io/ledgerhq/ledger-app-builder/ledger-app-builder-lite:latest
+cd <your app repository>                        # replace <appname> with the name of your app, (eg boilerplate)
+docker run --user "$(id -u)":"$(id -g)" --rm -ti -v "$(realpath .):/app" --privileged -v "/dev/bus/usb:/dev/bus/usb" ledger-app-builder-lite:latest
+make clean && make BOLOS_SDK=$<device>_SDK      # replace <device> with one of [NANOS, NANOX, NANOSP, STAX, FLEX]
+exit
+```
+
+### Run a simple test using the Speculos emulator
+
+You can use the following command to get your first experience with Ragger and Speculos
+```
+pytest -v --tb=short --device nanox --display
+```
+Or you can refer to the section `Available pytest options` to configure the options you want to use
+
+
+### Run a simple test using a real device
+
+The application to test must be loaded and started on a Ledger device plugged in USB.
+You can use for this the container `ghcr.io/ledgerhq/ledger-app-builder/ledger-app-builder-lite`:
+```
+docker pull ghcr.io/ledgerhq/ledger-app-builder/ledger-app-builder-lite:latest
+cd app-<appname>/                                   # replace <appname> with the name of your app, (eg boilerplate)
+docker run --user "$(id -u)":"$(id -g)" --rm -ti -v "$(realpath .):/app" --privileged -v "/dev/bus/usb:/dev/bus/usb" ledger-app-builder-lite:latest
+make clean && make BOLOS_SDK=$<device>_SDK load     # replace <device> with one of [NANOS, NANOX, NANOSP, STAX, FLEX]
+exit
+```
+
+You can use the following command to get your first experience with Ragger and Ledgerwallet on a NANOX.
+Make sure that the device is plugged, unlocked, and that the tested application is open.
+```
+pytest -v --tb=short --device nanox --backend ledgerwallet
+```
+Or you can refer to the section `Available pytest options` to configure the options you want to use
+
+
+## Available pytest options
+
+Standard useful pytest options
+```
+    -v              formats the test summary in a readable way
+    -s              enable logs for successful tests, on Speculos it will enable app logs if compiled with DEBUG=1
+    -k <testname>   only run the tests that contain <testname> in their names
+    --tb=short      in case of errors, formats the test traceback in a readable way
+``` 
+
+Custom pytest options
+```
+    --device <device>           run the test on the specified device [nanos,nanox,nanosp,stax,flex,all]. This parameter is mandatory
+    --backend <backend>         run the tests against the backend [speculos, ledgercomm, ledgerwallet]. Speculos is the default
+    --display                   on Speculos, enables the display of the app screen using QT
+    --golden_run                on Speculos, screen comparison functions will save the current screen instead of comparing
+    --log_apdu_file <filepath>  log all apdu exchanges to the file in parameter. The previous file content is erased
+``` 
+
diff --git a/tests/utils.py b/tests/utils.py
new file mode 100644
index 0000000..cb52233
--- /dev/null
+++ b/tests/utils.py
@@ -0,0 +1,23 @@
+from pathlib import Path
+from hashlib import sha256
+from sha3 import keccak_256
+
+from ecdsa.curves import SECP256k1
+from ecdsa.keys import VerifyingKey
+from ecdsa.util import sigdecode_der
+
+
+ROOT_SCREENSHOT_PATH = Path(__file__).parent.resolve()
+
+
+# Check if a signature of a given message is valid
+def check_signature_validity(public_key: bytes, signature: bytes, message: bytes) -> bool:
+    pk: VerifyingKey = VerifyingKey.from_string(
+        public_key,
+        curve=SECP256k1,
+        hashfunc=sha256
+    )
+    return pk.verify(signature=signature,
+                     data=message,
+                     hashfunc=keccak_256,
+                     sigdecode=sigdecode_der)