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 0xe79358e12e9a277e0d9149bb37739273a322821efee75adeb42eea0bee4b2e38. Chain 2 (Bitcoin): anchored in block 953706 (2026-06-14T23:14:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d4cf629-66f6-4035-b68d-ade1e6c2a1c7.json and https://artists.proofprofile.net/proofs/artist/7d4cf629-66f6-4035-b68d-ade1e6c2a1c7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Le Cycle de Persée, Partie 1: Le Roi et l'Oracle
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 0x7be62fa40d28c096fa58072274c2e7adaa22e6dffe3b51da54ac3a249df021d9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYOK2240888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae77a79858c4610d7f5a72cf19102d52dd22aac5bceaa9c0505677a614b910e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:45:05Z), 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/SEYOK2240895.
Kestrel, L'Oiseau en cage - ARC 1 (Original Soundtrack)
Kestrel, L'Oiseau en cage - ARC 2 (Original Soundtrack)