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 0x064bce231817655e89b37347bb1b7f319b68be5b9fd9f6d09c4858a8c84c2464. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/906687b4-2b62-45f1-bdac-598f4d39d0d3.json and https://artists.proofprofile.net/proofs/artist/906687b4-2b62-45f1-bdac-598f4d39d0d3.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 0x2e181e8c0e225722fc8bf6869399e464e4deca88c816ccb82123dbf678dac068. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FRZ050300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4d4bacbb5484c34439aa668cf52b79119b6fe477fdf94bba1e909b5f9f7d3a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRZ050300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64103dff91152324397ec3c580abfaa25606540d6fa3f026744e7767b610a938. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRIDO2011812.
Vole (2 générations chantent pour la 3ème)
Vole (2 générations chantent pour la 3ème) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea3acad63540988e206debc358526b7349f1f38b87dd5debe9b1bc910a6713c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR1A91501633.
Les canards en plastique (feat. Ours & Pierre Souchon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5632d085a8d47ce06544ae42ae87d820a998680f0e5ceba5affc867511e6924d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR8Y71300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d47de4673eab0119ad9d29bfe9f59f6a9bbd31d0c16f7dd4d36cd10bfd04369. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRZ051900543.
Presque (avec Pierre Souchon et Ours) - Live au Dôme de Paris, 2022
Ici & là, en concert au Dôme de Paris (Live, 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7fb769f5000ed5058e58324867d9be209b6b6ab57fe60129b6696394b3764e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRZ042200955.
Le marin (avec Pierre Souchon et Ours) - Live au Dôme de Paris, 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43c02eebb6fdf4a42161f5b2d48d1132323ce2d95515445aa6614c9068531e6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRZ042200956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7e22651adb21bb302cd5ae0352174e12262f45906d081709295e42bffbb338. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRUM72500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1440928010acddd2ec15b0afc4565c7e6c233a63dd41a1e4bb5b7189d143b5b8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRZ042100983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29acc7aa1eed2714fae753be2b6b0ee0a0c94cc5055e7293bf13eca3e8f6d6ad. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR44T1910070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9985ad9ce25613c1b733ee43b68b09831e144be59d00e150be11ee2c8744c7b3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRZ082100264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9985ad9ce25613c1b733ee43b68b09831e144be59d00e150be11ee2c8744c7b3. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/FRZ082100264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf080b1a5211a0eb58b92a539840d505f834065e3bd44502bd377bf6e9be468d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRUM71800082.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch