Jesse Joseph Quin (born 3 September 1981) is a British multi-instrumentalist, singer, songwriter and producer, best known as the bass player of the alternative rock band Keane. Quin also founded and r
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 0x64cb980b63a0ff677617fefcd7eccf15aaabe0d6929594e5ec1f6c7517fc384f. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3144a47b-9d61-48d2-b929-102ab037ec4b.json and https://artists.proofprofile.net/proofs/artist/3144a47b-9d61-48d2-b929-102ab037ec4b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.