Tokens & Apps · Credential verification · 2026
ProofEd
Tamper-proof certificates: hashes anchored on-chain, verified publicly by QR code.
- Hashing
- Keccak-256
- Verification
- QR-based
- Network
- Sepolia
01 The problem
Forged degrees are cheap to make and slow to check. Verification usually means emailing a university and waiting.
Each certificate's keccak-256 hash is anchored on Ethereum. Anyone can scan its QR code, and the page recomputes the hash and compares it with the chain, so any edit breaks the match.
02 How it works
Hover or tap a step
03 What I built
- 01An issuer dashboard and a Node/Express API.
- 02Certificate hashes anchored on Sepolia, with records in MongoDB.
- 03A public QR verification page that recomputes and checks the hash.