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 0x9759fed60b5bb45fabd73d1a47ad0d598bd07603988e9a4cb207510949e972a1. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8506b80e-f689-4b58-a57f-3ba56c0f3ac5.json and https://artists.proofprofile.net/proofs/artist/8506b80e-f689-4b58-a57f-3ba56c0f3ac5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x6d182a59426c7b029226a11adea2e20da3bd3280869dfe8cb97fe1f9b9576b4c. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FRY479202702.
Ti Beudeff (Chants de marins - Songs of the Sea from Brittany -Musiques Celtiques- Celtic Music - Keltia Musique - Bretagne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7229177e4dee4c2f2f312105bcf9a6931e50952d16dfce710203ef5028d22f0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRY479303903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8e064f664ac30fda5ed29b6135658a027d9527f0a64535fa1c8209ef60ffa1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRY479303905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2487af127bcdc050a5471dc48bf019e612484d8da377d576b54b43e6628af3. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:23:37Z), 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/FRY479303908.
L'oiseau noir (Chants de marins - Songs of the Sea from Brittany - Musiques celtiques - Celtic Music - Keltia musique - Bretagne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2035c1edb9114b958540e0981ce6b89be29f4ecde133c16f59fde0ffd17a9403. 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/FRY479505302.
Douce Barbarie (Chants de marins - Songs of the Sea from Brittany - Musiques celtiques - Celtic Music - Keltia musique - Bretagne)
Quinze Marins (Chants de marins - Songs of the Sea from Brittany - Musiques celtiques - Celtic Music - Keltia musique - Bretagne)
Fumier d'baleine / Ti beudeff (Chants de marins)
L'oiseau noir / Douce barbarie (Chants de marins)