diff --git a/.changeset/deterministic-rust-release.md b/.changeset/deterministic-rust-release.md
new file mode 100644
index 0000000..d469709
--- /dev/null
+++ b/.changeset/deterministic-rust-release.md
@@ -0,0 +1,5 @@
+---
+"@operatorstack/yield": patch
+---
+
+Make Python and Rust release receipts reproducible across protected publisher retries.
diff --git a/.github/workflows/npm-publish.yml b/.github/workflows/npm-publish.yml
index b121d4f..485d6af 100644
--- a/.github/workflows/npm-publish.yml
+++ b/.github/workflows/npm-publish.yml
@@ -33,6 +33,7 @@ jobs:
       version: ${{ steps.release.outputs.version }}
       dist_tag: ${{ steps.release.outputs.dist_tag }}
       source_sha: ${{ steps.release.outputs.source_sha }}
+      source_epoch: ${{ steps.release.outputs.source_epoch }}
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
@@ -75,6 +76,7 @@ jobs:
           echo "version=$version" >> "$GITHUB_OUTPUT"
           echo "dist_tag=$dist_tag" >> "$GITHUB_OUTPUT"
           echo "source_sha=$source_sha" >> "$GITHUB_OUTPUT"
+          echo "source_epoch=$(git show -s --format=%ct HEAD)" >> "$GITHUB_OUTPUT"
 
   build:
     needs: resolve
@@ -122,6 +124,7 @@ jobs:
       - name: Build Python wheels
         if: needs.resolve.outputs.channel == 'stable'
         env:
+          SOURCE_DATE_EPOCH: ${{ needs.resolve.outputs.source_epoch }}
           VERSION: ${{ needs.resolve.outputs.version }}
         shell: bash
         run: |
@@ -147,9 +150,7 @@ jobs:
             name="$(sed -n 's/^name = "\([^"]*\)"/\1/p' "$directory/Cargo.toml" | head -n 1)"
             cp "$directory/target/package/${name}-${VERSION}.crate" dist/crates/
           done
-          (cd dist/packages/rust && cargo package --manifest-path yieldskill/Cargo.toml)
-          cp "dist/packages/rust/yieldskill/target/package/yieldskill-${VERSION}.crate" dist/crates/
-          test "$(find dist/crates -maxdepth 1 -name '*.crate' | wc -l | tr -d ' ')" = 7
+          test "$(find dist/crates -maxdepth 1 -name '*.crate' | wc -l | tr -d ' ')" = 6
       - name: Inspect npm tarballs
         shell: bash
         run: |
@@ -292,8 +293,6 @@ jobs:
     permissions:
       contents: read
       id-token: write
-    env:
-      CRATES_BOOTSTRAP_TOKEN: ${{ secrets.CRATES_BOOTSTRAP_TOKEN }}
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
@@ -305,11 +304,10 @@ jobs:
           path: dist/release-unit
       - id: auth
         name: Request a short-lived crates.io token
-        if: env.CRATES_BOOTSTRAP_TOKEN == ''
         uses: rust-lang/crates-io-auth-action@c6f97d42243bad5fab37ca0427f495c86d5b1a18 # v1.0.5
       - name: Publish complete Rust release unit
         env:
-          CARGO_REGISTRY_TOKEN: ${{ env.CRATES_BOOTSTRAP_TOKEN || steps.auth.outputs.token }}
+          CARGO_REGISTRY_TOKEN: ${{ steps.auth.outputs.token }}
           VERSION: ${{ needs.resolve.outputs.version }}
         shell: bash
         run: |
@@ -347,9 +345,27 @@ jobs:
             sleep 10
           done
 
-          publish_if_missing dist/release-unit/rust/yieldskill
+          mkdir -p dist/crates-receipt
+          cp dist/release-unit/crates/*.crate dist/crates-receipt/
+          cargo package --manifest-path dist/release-unit/rust/yieldskill/Cargo.toml
+          cp "dist/release-unit/rust/yieldskill/target/package/yieldskill-${VERSION}.crate" dist/crates-receipt/
+          main_state="$(node packaging/crates-release.mjs status \
+            --version "$VERSION" \
+            --name yieldskill \
+            --archive "dist/crates-receipt/yieldskill-${VERSION}.crate")"
+          if [[ "$main_state" == matched ]]; then
+            echo "yieldskill@${VERSION} already exists with the publisher receipt checksum"
+          else
+            test "$main_state" = missing
+            cargo publish --manifest-path dist/release-unit/rust/yieldskill/Cargo.toml
+          fi
           node packaging/crates-release.mjs verify \
             --version "$VERSION" \
-            --archives dist/release-unit/crates \
+            --archives dist/crates-receipt \
             --attempts 18 \
             --delay-ms 10000
+      - uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
+        with:
+          name: crates-${{ needs.resolve.outputs.version }}-${{ needs.resolve.outputs.source_sha }}
+          path: dist/crates-receipt/
+          if-no-files-found: error
diff --git a/.github/workflows/release-finalize.yml b/.github/workflows/release-finalize.yml
index 2ad013d..a460fbb 100644
--- a/.github/workflows/release-finalize.yml
+++ b/.github/workflows/release-finalize.yml
@@ -92,6 +92,8 @@ jobs:
           test -n "$run_id"
           gh run download "$run_id" --repo "$GITHUB_REPOSITORY" \
             --name "packages-${version}-${SOURCE_SHA}" --dir "$RUNNER_TEMP/release-unit"
+          gh run download "$run_id" --repo "$GITHUB_REPOSITORY" \
+            --name "crates-${version}-${SOURCE_SHA}" --dir "$RUNNER_TEMP/crates-receipt"
           for package in \
             @operatorstack/yield \
             @operatorstack/yield-darwin-amd64 @operatorstack/yield-darwin-arm64 \
@@ -106,7 +108,7 @@ jobs:
             --delay-ms 10000
           node packaging/crates-release.mjs verify \
             --version "$version" \
-            --archives "$RUNNER_TEMP/release-unit/crates" \
+            --archives "$RUNNER_TEMP/crates-receipt" \
             --attempts 3 \
             --delay-ms 10000
           test "$(git rev-list -n 1 "$TAG")" = "$SOURCE_SHA"
diff --git a/packaging/assemble.mjs b/packaging/assemble.mjs
index 852b41a..28939c9 100644
--- a/packaging/assemble.mjs
+++ b/packaging/assemble.mjs
@@ -130,8 +130,6 @@ async function assembleRust({ version, binaries, output }, records) {
   await writeFile(join(main, "Cargo.toml"), cargo);
   await mkdir(join(main, "src/bin"), { recursive: true });
   await cp(join(root, "packaging/rust-launcher.rs"), join(main, "src/bin/yskill.rs"));
-  await mkdir(join(rust, ".cargo"), { recursive: true });
-  await writeFile(join(rust, ".cargo/config.toml"), `[patch.crates-io]\n${targets.map((target) => `${rustPackage(target)} = { path = "runtime/${target.id}" }`).join("\n")}\n`);
 }
 
 export async function assemble(options) {
diff --git a/packaging/assemble.test.mjs b/packaging/assemble.test.mjs
index f588f9e..ed9b7b0 100644
--- a/packaging/assemble.test.mjs
+++ b/packaging/assemble.test.mjs
@@ -1,6 +1,6 @@
 import test from "node:test";
 import assert from "node:assert/strict";
-import { mkdtemp, mkdir, readFile, rm, stat, writeFile } from "node:fs/promises";
+import { access, mkdtemp, mkdir, readFile, rm, stat, writeFile } from "node:fs/promises";
 import { join } from "node:path";
 import { tmpdir } from "node:os";
 import { assemble, isPackageVersion } from "./assemble.mjs";
@@ -100,8 +100,5 @@ test("assembles one public npm package and six matching npm and Python runtimes"
   assert.match(rustReadme, /crates\.io\/crates\/yieldskill/);
   assert.doesNotMatch(rustReadme, /npmjs\.com|pypi\.org/);
   assert.match(await readFile(join(rustMain, "LICENSE"), "utf8"), /MIT License/);
-  const rustPatch = await readFile(join(output, "rust/.cargo/config.toml"), "utf8");
-  for (const target of targets) {
-    assert.match(rustPatch, new RegExp(`${rustPackage(target)} = \\{ path = "runtime/${target.id}" \\}`));
-  }
+  await assert.rejects(access(join(output, "rust/.cargo/config.toml")), { code: "ENOENT" });
 });
diff --git a/scripts/check-release-control.mjs b/scripts/check-release-control.mjs
index 058aa61..06a7cc9 100644
--- a/scripts/check-release-control.mjs
+++ b/scripts/check-release-control.mjs
@@ -81,6 +81,8 @@ export async function checkReleaseControl(root = resolve(import.meta.dirname, ".
   expect(raw["npm-publish.yml"].includes("pypa/gh-action-pypi-publish@"), "PyPI publishing must use the trusted-publishing action");
   expect(raw["npm-publish.yml"].includes("rust-lang/crates-io-auth-action@"), "crates.io publishing must use the trusted-publishing action");
   expect(raw["npm-publish.yml"].includes("chmod 0644 dist/packages/rust/runtime/*/runtime/*"), "Rust archives must normalize embedded runtime modes before artifact transport");
+  expect(raw["npm-publish.yml"].includes("SOURCE_DATE_EPOCH"), "Python wheels must bind timestamps to the immutable source revision");
+  expect(raw["npm-publish.yml"].includes("name: crates-${{ needs.resolve.outputs.version }}-${{ needs.resolve.outputs.source_sha }}"), "the crates publisher must upload an exact post-dependency receipt");
   expect(raw["npm-publish.yml"].indexOf("rust/runtime/*") < raw["npm-publish.yml"].indexOf("rust/yieldskill"), "Rust runtime crates must publish before the SDK crate");
   expect(!raw["npm-publish.yml"].includes("skip-existing"), "PyPI retries must verify hashes instead of blindly skipping existing files");
 
@@ -95,8 +97,8 @@ export async function checkReleaseControl(root = resolve(import.meta.dirname, ".
   expect(raw["release-finalize.yml"].includes("npm-publish.yml"), "finalization must bind the combined publisher receipt");
   expect(raw["release-finalize.yml"].includes("pypi-release.mjs verify"), "finalization must verify the PyPI wheel hashes");
   expect(raw["release-finalize.yml"].includes("crates-release.mjs verify"), "finalization must verify the crates.io package hashes");
-  const bootstrapSecretUses = Object.values(raw).reduce((count, text) => count + (text.match(/secrets\.CRATES_BOOTSTRAP_TOKEN/g) ?? []).length, 0);
-  expect(bootstrapSecretUses === 1, "the one-time crates.io bootstrap token must be scoped only to the protected publisher job");
+  expect(raw["release-finalize.yml"].includes("--name \"crates-${version}-${SOURCE_SHA}\""), "finalization must consume the publisher-produced crates receipt");
+  expect(!Object.values(raw).some((text) => text.includes("CRATES_BOOTSTRAP_TOKEN")), "crates.io publishing must not use a bootstrap token");
   for (const [name, text] of Object.entries(raw)) {
     expect(!/NPM_TOKEN|NODE_AUTH_TOKEN|PYPI_TOKEN|secrets\.(npm|pypi)|password:/i.test(text), `${name}: long-lived registry credentials are forbidden`);
   }