Sir Clive Haydn Martin (born 20 March 1935) is a British businessman who was Lord Mayor of London from 1999 to 2000. Martin was born in London to Thomas Stanley and Dorothy Gladys Martin. He was educ
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 0x8b892853b8586fb6a41c4d15035eea9c443a93aacabd1e35cb0307e56c0cf917. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c278a71-bcda-425c-8063-7e9f10f6ace6.json and https://artists.proofprofile.net/proofs/artist/3c278a71-bcda-425c-8063-7e9f10f6ace6.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.