1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x1f58f4d32641cd7256393b733b0dde9ae1a2c7e3677d3d4d8ec569ee15507372. 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/9fe6e12f-1722-4cd8-b362-0b3bffa6e637.json and https://artists.proofprofile.net/proofs/artist/9fe6e12f-1722-4cd8-b362-0b3bffa6e637.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les plus belles chansons de Bretagne et de marins
Chants de mer et de marins (Les plus belles chansons)
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 → block OTSBitcoinBlock must exist at that height 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 0x71907953c7502bef12111c76ef1b3548f8744d8b0cff510a8cfb605bd83f9695. 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/FR6V80539272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950c282458d448d441c92bbd24e2c74eb7b0b77ed9c667ad17d540928f0c616e. 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/FR6V80539276.
Chants de Bretagne, de mer et de marins - Les meilleures chansons, vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe915082d52fae35e74e6bc2b08c6b6df8b1aaa20249f627a7f976058972cadbe. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:46Z), 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/FR6V80551328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df90c5e73b03cb008638d9cd24d821af87adf2faf814a9a6ae23a6884dff4e5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:31:05Z), 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/FR6V80551329.
Chants de Bretagne, de mer et de marins - Les meilleures chansons, vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1429fc36a6b99059222b6e99db3feb929716b81585ff536d60464f830b8d5a6b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR6V80551352.
Chants de Bretagne, de mer et de marins - Les meilleures chansons, vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f35c11b585e56030fe247146af9c01d6ac0c69d0a0d6dd45a21cc856932459. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:55:50Z), 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/FR6V80551385.
Chants de Bretagne, de mer et de marins - Les meilleures chansons, vol. 3
Les plus belles chansons de Bretagne, de mer et de marins
Chants de Bretagne, de mer et de marins - Les meilleures chansons, vol. 5
Chants de Marins, vol. 5 (Les plus belles chansons)
Chants de Marins, vol. 4 (Les plus belles chansons)
Chants de Marins, vol. 1 (Les plus belles chansons)
Chants de Marins, vol. 3 (Les plus belles chansons)
Chants de Marins, vol. 2 (Les plus belles chansons)
Les plus belles chansons de Bretagne, de mer et de marins (Les plus beaux chants de marins)