Michel Plasson - Orchestre Du Capitole De Toulouse - Jose Antonio Sainz - Natalie Dessay - Malcolm Stewart - Choeur D'Enfants Midi Pyrenees - Orfeon Donostiarra
{"copyright_id":"0xd8bb83efd244c2311ffaa4d55029ac8b96dcdb8c32ca6a6be96b6d20d839811c","name":"Michel Plasson - Orchestre Du Capitole De Toulouse - Jose Antonio Sainz - Natalie Dessay - Malcolm Stewart - Choeur D'Enfants Midi Pyrenees - Orfeon Donostiarra","registered_at":"2026-06-16T01:09:55Z","symbol":"NIM0890061","token_address":"0x73aff7ae6b5eb40ff5e6e2678f78519fc1329f10","type":"artist","uuid":"21b03f68-e3cc-4b95-9678-c1e3730a6e8c"}
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bb83efd244c2311ffaa4d55029ac8b96dcdb8c32ca6a6be96b6d20d839811c. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21b03f68-e3cc-4b95-9678-c1e3730a6e8c.json and https://artists.proofprofile.net/proofs/artist/21b03f68-e3cc-4b95-9678-c1e3730a6e8c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).