Verifiable stablecoin work-payment receipts anchored on Arbitrum.
ProofPay verifies public USDG and USDC transfers and turns them into portable work-payment receipts. It independently reads onchain payment data, builds a deterministic privacy-conscious digest, and lets users anchor that digest in a public registry on Arbitrum Sepolia without revealing private invoice details. The demo includes explorer links, deterministic verification, and a dependency-free Solidity registry.
Built during the hackathon: the receipt commitment schema, deterministic hashing, Arbitrum Sepolia registry, browser deployment and wallet anchoring flows, automated tests, public demo, and independent deployment verification. Contract: 0x19A333DCcE504858AedAd6D8E3cd3d9d7FB6ECed.
Bootstrapped prototype. No external funding raised.