OpenProofCheck a fingerprint
on Base Sepolia.
Public read. No wallet required. Hash a file locally and check the onchain registry.
Choose a fileThe file stays in your browser. Max: 100 MB.
Receipt import
Validate a downloaded receipt
Import an OpenProof receipt JSON. Schema checked locally, hash checked onchain.
Drop receipt JSON or choose oneOpenProof validates the local JSON schema, then checks the receipt hash against Base Sepolia.
Receipt import
Import a downloaded OpenProof receipt JSON.
Recent Verifications
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Proofs and verifications you complete in this browser will appear here.