Verify a fingerprint

Paste a photo's SHA-256 fingerprint (the value shown in its OPCam watermark or receipt). We'll check whether it has been anchored on-chain — and you can also drop in the original photo to compute its fingerprint locally.

Anchoring is on the Optimism network. A confirmed result links to the transaction on Optimistic Etherscan. Note: computing a fingerprint from a delivered photo requires the exact original image bytes.