/claim #18

Summary

• Add a distinct scientific bounty escrow settlement ledger for post-decision prize settlement.
• Evaluate sponsor escrow coverage, payable milestones, payout route basis points, dispute holds, settlement packets, and IP release state.
• Generate signed ledger events, admin metrics, sample data, tests, requirement mapping, and demo artifacts.

Demo

• scientific-bounty-escrow-settlement-ledger/docs/demo.gif
• scientific-bounty-escrow-settlement-ledger/docs/demo.svg
• npm run demo prints ready, held, and blocked settlement state plus signed event evidence.

Verification

• npm run check
• npm test
• npm run demo
• git diff --check

Non-overlap

This is a post-decision escrow settlement slice. It does not duplicate challenge intake, challenge lifecycle, scoring/arbitration, appeals, workspace privacy, or anti-collusion modules already submitted for issue #18.