Evidence-bound milestone escrow: fund agreed work, review the proof, and release payment through an independent reviewer.
ProofGrant is a milestone escrow prototype for accountable grant payments. Sponsors fund agreed work, builders commit evidence, and an independent reviewer approves that exact evidence or requests changes. The Solidity contracts enforce separate roles, prevent duplicate payouts, and support refunds after expiry. Evidence hashes verify integrity, not the quality or truth of the work. The prototype includes a local EVM walkthrough, 14 passing contract tests, and a hosted wallet interface targeting Arbitrum Sepolia.
Built the ProofGrant escrow and DEMO token contracts, role-based funding and review flow, evidence fingerprint verification and download, deadline refunds, 14 contract tests, local EVM walkthrough, animated interface, and public testnet wallet workspace. Published source on GitHub and frontend on Vercel. Escrow and DEMO token deployed on Arbitrum Sepolia.