Harry may refer to: Television Harry (American TV series), 1987 comedy series starring Alan Arkin Harry (British TV series), 1993 BBC drama that ran for two seasons Harry (game show), 2012 French gam
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979318adb56e0a5284c0bff80d78354f45f79872e10ae6a1c08e4d926b58c666. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2aef683e-1e0c-4cdb-a8fc-5ea795f53060.json and https://artists.proofprofile.net/proofs/artist/2aef683e-1e0c-4cdb-a8fc-5ea795f53060.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).