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 0x2a9054bda268ca33b3c041d0f2a82fbd8cd1133f198e86a664a839e5c5940710. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3d11159-24eb-428a-a4bf-e985a9e5015f.json and https://artists.proofprofile.net/proofs/artist/d3d11159-24eb-428a-a4bf-e985a9e5015f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dans mon quartier (feat. Robert Valentino et son orchestre) [Mono Version]
Parce qu'un air d'accordéon (feat. Robert Valentino et son orchestre) [Mono Version]
La souris de la rue d'Paradis (feat. Robert Valentino) [Mono Version]
Cherbourg avait raison (feat. Robert Valentino et son orchestre) [Mono Version]
Fleur de souris (feat. Robert Valentino et son orchestre) [Mono Version]
Dieu soit loué (feat. François Rauber et son orchestre) [Mono Version]
Maladie de jeunesse (feat. Robert Valentino et son orchestre) [Mono Version]
Chants révolutionnaires de notre histoire 1789-1989
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 0x81972495d3c3ce4d60903e708dc9a89d48d19f9eb24714137a886776bd02aabb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR0W61845496.