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 0x26a89829ab6af3b1c77782d74768800d7a3d05b7fc6ebf6eb712c62430baf484. Chain 2 (Bitcoin): anchored in block 953860 (2026-06-15T23:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02e490d9-4f31-43aa-911c-8c4eb0d2ecaa.json and https://artists.proofprofile.net/proofs/artist/02e490d9-4f31-43aa-911c-8c4eb0d2ecaa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Soulagement de l'Anxiété: Découvrez la Musique Relaxante pour Calmer l'Esprit, Méditer et Dormir Profondément
Musique guitare pour travailler: Augmente la puissance du cerveau et concentration
Concentration instrumentale: Musique de fond pour la bonne alternance étude: travail, concentration et productivité
Vaincre la procrastination: Musique instrumentale avec bruit blanc, pour concentration au travail
Musique de concentration pour étudier: Piano musique, mélodies classiques relaxantes pour étudier et se concentrer
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 0xdff57c2016c2c5ebb048f8f0b6a266b728e3d6def42d6f1948b42dd1bfd204f0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITO101965324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587e989d699013c65eb584df58066b98866b875f23e68efb1bec6200149fb7e4. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/ITO101965325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1200e77a5b01a3dc2fe2f1aeed12c03bb112a8b306a4890a5ca9ba31c72d54c7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITO101965326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d1f4c2089e01c01b4a4e4e8cf390182a9cf43f3ec38042e5440cc0e9abdb39. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ITO101965328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6058404d98bee4bad5650add4b64bf13fc69316755ad1dfe0ecfb17fe6e5d3d4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITO101965333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0279dcf2c099b1daba0d8b3222a9586f01230bbe15478e02154758c7d6118821. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITO101965335.
Nettoyage Intérieur - Musique de Désintoxication, Sons de la Nature pour la Clarté de l'Esprit