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 0xcf042e586486d1e947af2436495611f278500edd0904fa35118a34d435d28526. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81161be4-a38a-4c94-b16e-75109d093547.json and https://artists.proofprofile.net/proofs/artist/81161be4-a38a-4c94-b16e-75109d093547.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1 Heure de Musique Relaxante et Apaisante pour Chat
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 0x248ea51aed68962ea7c8d94e1411d05840091919642c1bf6aff789bc7d0dff91. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:01Z), 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/QZFML2145632.
Chansons Relaxantes pour la Thérapie du Sommeil du Chat
1 Heure de Musicothérapie Apaisante pour Chats
2 Heures de Musique Relaxante pour Chats
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248ea51aed68962ea7c8d94e1411d05840091919642c1bf6aff789bc7d0dff91. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZFML2145632.
Musique Apaisante pour le Sommeil des Chats Pendant leur Absence
Musique Relaxante au Piano pour Chats Endormis