Fraser Harrison is an English writer. Biography Harrison published his first novel High on the Hog in 1991, with his second novel Minotaur in Love being published in 2007. In 2012, he published a hi
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 0xd275e9e9fed2577bb01578f891e249ebe77ffb51c7e8a2a9421840580fa2b34b. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8a371fa-91e2-4f84-82ba-d2f32bb022e2.json and https://artists.proofprofile.net/proofs/artist/f8a371fa-91e2-4f84-82ba-d2f32bb022e2.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.