Choeurs et Orchestre du Théâtre National de l'Opéra, Paris
{"copyright_id":"0x984e08370da83296b05d15e67726113a18bbcfb0d10ab926554a252f52d4b773","name":"Choeurs et Orchestre du Théâtre National de l'Opéra, Paris","registered_at":"2026-06-20T17:47:32Z","symbol":"NIM1671500","token_address":"0x3d428e5f7efbd4a6d68825a7ab88321cfaef735b","type":"artist","uuid":"bd1eae6c-5bde-4ec9-8d6a-ff1b6e6788c8"}
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 0x984e08370da83296b05d15e67726113a18bbcfb0d10ab926554a252f52d4b773. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd1eae6c-5bde-4ec9-8d6a-ff1b6e6788c8.json and https://artists.proofprofile.net/proofs/artist/bd1eae6c-5bde-4ec9-8d6a-ff1b6e6788c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).