Choeurs René Duclos/Choeurs d'Enfants Jean Pesneaud/Orchestre de l'Opéra National de Paris/Georges Prêtre
{"copyright_id":"0xdeabdc663b7f0fde647160a4a960fb0abb75a5e96acd9949b5acf2a7d5001c80","name":"Choeurs René Duclos/Choeurs d'Enfants Jean Pesneaud/Orchestre de l'Opéra National de Paris/Georges Prêtre","registered_at":"2026-06-21T02:48:31Z","symbol":"NIM1796634","token_address":"0x598bad2e4221a0cc83755de6fa5804eff73073ad","type":"artist","uuid":"d6a43e82-66e1-4e2b-93f5-944c99940b7f"}
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 0xdeabdc663b7f0fde647160a4a960fb0abb75a5e96acd9949b5acf2a7d5001c80. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6a43e82-66e1-4e2b-93f5-944c99940b7f.json and https://artists.proofprofile.net/proofs/artist/d6a43e82-66e1-4e2b-93f5-944c99940b7f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bizet: Carmen, Act 1: "La cloche a sonné....Dans l'air" (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 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 0xc45ff96ecc330a96f352cfa30e4fe4589ad487ba9e8c4d4f1db50018191f7401. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC9701431.