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 0x3d96ededa6cc1d855bba0f5767404c4c62c44dbb12f41c98fbcfa801d4ad9e30. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8d99108-af43-47b2-a928-88597c39600b.json and https://artists.proofprofile.net/proofs/artist/f8d99108-af43-47b2-a928-88597c39600b.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 0x2cba97a107992aabde102336ec576f428c97aa7979dab2092125e97915b17107. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRZ110601521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2177122063a8f99b109383107117129d28c626bccf2aacfc22a54ed6ae2a843. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:20:25Z), 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/FRZ110601524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009b91f265811ffd1ddd5c5e4bdf7744e7989a0ab986954ce6ab90c33f336d19. 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/FRZ111002517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86297877d769003fc86f5a7ec002d535caff580470dff35990613282431b469e. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:08:23Z), 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/FRUM72100508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da5f8d7e2deca1972460a1de0668d3c8201075832811bef1109734b20ba49d2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRUM72002082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf426dd46acb95c201e5f6272648702965362d4db0e415b8dcbe6958f70dfda96. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/FRUM72100812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f63f17edec43704e5ac200392b92a7e48dba0c253f5003286e97e54e60e0134. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/FRUM72100814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343dcfe63de7a2640fd12d5994e345c35c644012a0aa829b302ab280394a863b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:35:36Z), 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/FRUM72100817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db44b4392a9336a49b6131b5c12e3180d5b792bbced912df1f063725586dd00. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRUM72100822.
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 0xf15494921c715c7c29c905b85f65d61b8daf888f89961055dcc98b4c3fd044df. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FRUM72500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906da1828030731d495c5c0b189182561619afaf776bfc97a965e573f872e2be. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRUM72500110.
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 0x46b08256359c7ca538e81930f464b28549c03a3c0fd8b8f54801452ad95839df. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:04:51Z), 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/FR6Z71400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcde5df5309a0421b59e689a7b4f54b431b1ca43398027956dbb1f27cbc16c2. 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/FRUM71502717.
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 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