CommitLedger

Canton-native settlement infrastructure for verified open-source work.

CommitLedger binds canonical contribution evidence to role-separated authorization and an auditable settlement receipt.

Active competition targets — 7 October 2026

This sprint has exactly two active submission targets:

1. HackCanton Season 3
   • Submission deadline: 9 Oct 2026, 23:59 UTC
   • Bangladesh time: 10 Oct 2026, 05:59
2. Crypto World's Fair — Colosseum
   • Contest/submission cutoff: 12 Oct 2026, 23:59 PT
   • Bangladesh time: 13 Oct 2026, 12:59

The 1 October plan that retired HackCanton is superseded by the owner's 7 October instruction to submit CommitLedger to both programs.

See Competition Targets, Submission Status, Final Checklist, and Submission Draft.

Product thesis

GitHub Issue -> Bounty -> Claim -> Pull Request -> Merge Evidence -> Canton Settlement -> SettlementReceipt

Canton/Daml is the authorization and workflow-state layer, not a cosmetic integration. GitHub remains the canonical external work-evidence source.

Core guarantees

• Maintainer creates the bounty, accepts the claim and settles verified work.
• Contributor claims work and submits the exact PR.
• Verifier attests canonical merge evidence.
• Merge evidence is bound to the exact issue and PR metadata.
• Wrong evidence, unauthorized actions and replay/duplicate settlement are rejected.
• Settlement consumes the verified contract and creates an auditable SettlementReceipt.
• DEMO_CREDIT is explicitly non-production test value.

Frozen technical proof

The last fully executed, source-bound technical proof is:

26bd992787401f6458f6685d2ab76aacd05eab4e

Verified at that exact code commit:

• Node tests: 86/86 PASS
• DPM 3.5.12 PASS
• Daml build PASS
• Daml Script tests PASS
• fresh Canton sandbox PASS
• six ledger transitions PASS
• SettlementReceipt generated
• wrong-evidence rejection captured
• unauthorized-settlement rejection captured
• duplicate/replay rejection captured

External GitHub evidence fixture:

• Repository: Saidur-droid/MergeEarn
• Open issue: #69
• Merged PR: #73

MergeEarn is only the external proof fixture. CommitLedger is the product being submitted.

Canonical proof service:

https://commitledger-proof-final.onrender.com

Proof JSON:

https://commitledger-proof-final.onrender.com/api/proof

Planning/documentation commits after the frozen proof do not become runtime-proven automatically. If executable code changes, rerun the complete proof on the exact new commit.

Run locally

Requires Node.js 22+.

npm test
npm start

Open http://127.0.0.1:4173.

Run the full Canton proof

Configure the documented Canton environment values, then run:

bash scripts/run-local-proof.sh

The proof path reruns tests, builds/tests Daml, starts a fresh Canton sandbox, captures each ledger transition, executes negative authorization/replay checks, validates one coherent evidence bundle, and finishes at SettlementReceipt.

Submission assets

• Rules recheck — 7 Oct
• Submission status — 7 Oct
• Competition targets
• Final checklist
• Submission master draft
• HackCanton pitch
• HackCanton demo script
• Colosseum pitch script
• Colosseum demo script
• Hackathon work disclosure
• AI assistance disclosure
• Delivery status

Integrity

CommitLedger does not claim Canton Coin transfer, fiat settlement, external adoption, MainNet usage, revenue, paying customers, or production custody without evidence.

DEMO_CREDIT is test value only.

Canton is a registered trademark of Digital Asset (Switzerland) GmbH. CommitLedger is an independent project and is not sponsored or endorsed by Digital Asset.

Colosseum finalization — 7 October 2026

Immediate priority: Crypto World's Fair — Colosseum.

Latest provider-verified technical proof on the canonical Render service is source-bound to:

d582f3a008a5d0eb658b1c4bb0a4dd5007de6705

Verified on Render on 7 October 2026:

• Node tests: 88/88 PASS;
• DPM SDK 3.5.12 installed;
• Daml build/tests PASS;
• fresh Canton proof run completed;
• final SettlementReceipt captured;
• unauthorized-settlement rejection captured;
• duplicate/replay settlement rejection captured;
• build ended with SUCCESS: VERIFIED EVIDENCE;
• canonical deployment is live.

Colosseum final package: docs/COLOSSEUM_FINAL_PACKAGE.md.

The Colosseum wrapper is documentation/submission packaging only; it does not fork the proven settlement core.