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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6ba1a36cf5d63d9d35676325800085166a5dd8c603b5c8abcff297166e02c1. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7d9b987-0c5e-44d8-b960-ee9047a3c2db.json and https://artists.proofprofile.net/proofs/artist/d7d9b987-0c5e-44d8-b960-ee9047a3c2db.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdf5d56d405745e38b667a339534ff086aea67e3b55539efb26993c44f3bd56. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR8Z11410821.
Allez Viens (Via Con Me) [feat. Pierre Santini / Lada Redstar]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc646546bde355a16253fb0a87777d706d6e9292128923d2f515eace6ff9ed89. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRU481100100.
L'incroyable histoire de Gaston et Lucie (Un conte musical)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95680b09ed572c8a05aed71c3afbba156c20afa1d698fdfa20d73ed590298cea. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FR9W11006026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5afdfd68423d5e68386818668321b8e8177bc6c877eee4e985c8b3da8c264b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FR9W11006028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf4d742ef92d96f9ab31a6b2c76d9da7a01e31ba7e08343cb228557ea592b8e. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/FR9W11006030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed398713efe56c154f5f46805f7f55dd33e1c0d2a5e8d09ab36900ad747e02ef. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W11006032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8573fec86ed86d6fa632a8c1e50a2254bd0bb5099b6716e0c96e0c687d23f176. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W11006034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd63c67d85ae185a9352eef67f43e672877d82b6c49baca7643ebcee0eceb2e4. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FR9W11006037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc219177662b8eef5d19e8955695127d3bee80d2cea3c6009098dfaefaf1725d0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W11006039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fa8bcb792edf1e70efdfae65f64e502d607441f38005ef3b225a1ba73d8f4e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FR9W11006042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc65c695556b0feac74d4f24c11b599352725bfbc03578e2a6f2651a2534ecc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W11006043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094dafad9745c14274eedeaad37245e76738de507b408cbf306167990e89e03f. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/FR9W11006045.