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 0x1c32f8a9d0ecf7c31a667ed9e8e0c19ae89ee9bf5fa66db065374099c967784d. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eeb36bc0-afce-4b9e-a78e-61fc630ff44c.json and https://artists.proofprofile.net/proofs/artist/eeb36bc0-afce-4b9e-a78e-61fc630ff44c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La mer est trop vieille pour qu'on se moque d'elle (Chants de marins - Songs of the Sea from Brittany - Musiques celtiques - Celtic Music - Keltia musique - Bretagne)
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 0x1686b939ffc06021778b886b8f7cf27f8670801a2bcf6ea40fab20dac0008544. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/FRY470011001.
Tempete pour sortir.. (Chants de marins - Songs of the Sea from Brittany -Musiques Celtiques- Celtic music - Keltia Musique - Bretagne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885e02799e55fe04ff4700773b27fb044ecbcaa6abebbe85faabb58e0185af99. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRY479505809.
Femmes de Marins (Chants de marins - Songs of the Sea from Brittany - Musiques celtiques - Celtic Music - Keltia musique - Bretagne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf181b76b5d59bd6031ff96926d8c86d8c0ac48b2bdeead2f68175d7592a75707. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FRY479708101.
Best of de chants de marins (Songs of the Sea from Brittany - Musiques celtiques - Celtic Music - Keltia musique - Bretagne)