Robert Massard/Choeurs René Duclos/Orchestre de l'Opéra National de Paris/Georges Prêtre
{"copyright_id":"0x96f7d4f4b425bbc6db17c247a61bfe9d552d1523e15083293fff129f7f314b36","name":"Robert Massard/Choeurs René Duclos/Orchestre de l'Opéra National de Paris/Georges Prêtre","registered_at":"2026-06-21T07:39:11Z","symbol":"NIM1864087","token_address":"0x9a8b75da3cc0ac9a27b1d649f4f5057f9f4bee74","type":"artist","uuid":"e36d0413-3085-43f9-a7cd-9c9b55ba4cb6"}
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 0x96f7d4f4b425bbc6db17c247a61bfe9d552d1523e15083293fff129f7f314b36. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e36d0413-3085-43f9-a7cd-9c9b55ba4cb6.json and https://artists.proofprofile.net/proofs/artist/e36d0413-3085-43f9-a7cd-9c9b55ba4cb6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bizet: Carmen, Act 2: "Votre toast, je peux vous le rendre" (Escamillo, Chorus)
Orchestre du Théâtre National de l'Opéra Paris
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d76b971a03f3caa29b43bafe312f52fe14a89c3d0134e7bed61c1a370cb2e80. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9701446.