Chœur de l'abbaye Notre-Dame de Timadeuc
{"copyright_id":"0x4c36c59ecc4c01de94c2617c99c27d075bd686ada113cb6375f99eba61f6b0a1","name":"Chœur de l'abbaye Notre-Dame de Timadeuc","registered_at":"2026-06-21T15:56:49Z","symbol":"NIM1965615","token_address":"0xbccc21907670bfcf63aea2e8e59b04f977bc9a73","type":"artist","uuid":"f7cc1a5f-ee5a-44a9-9dc5-67cbfda60eee"}
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 0x4c36c59ecc4c01de94c2617c99c27d075bd686ada113cb6375f99eba61f6b0a1. 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/f7cc1a5f-ee5a-44a9-9dc5-67cbfda60eee.json and https://artists.proofprofile.net/proofs/artist/f7cc1a5f-ee5a-44a9-9dc5-67cbfda60eee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).