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 0x774b6f835bbe2505f70863cc1330e063a7b9dc7432b73b96d48cfc83656c23c9. 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/e1e76bdf-d854-471c-ae39-ee4e32e5aee5.json and https://artists.proofprofile.net/proofs/artist/e1e76bdf-d854-471c-ae39-ee4e32e5aee5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les plus belle mélodies de Frank Michael
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 0x799db79e60bce73009234dbc520b438d0a6a0ceb60659b70171b610553dd1376. 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/FR80T0000225.
Les femmes sont faites pour Q'on les aime
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571356c854c06681eecbabaf7d0aa119af10799d6ce15ad628982b238f9f267e. 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/FR80T0000226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3e18e0f01c0d1ea213ac402c381d6b41f38d9de0c60621cc16f3b9c15ec89d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FR80T0000227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b6b4332365aad78b358af28269b9b5534c1425b34d8aa1de1821a35897f453. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FR80T0000228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb45e59716ad66835911bc93de6c4bae3b5ed04a5a6d2c1a55353716e024bdf. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/FR80T0000247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44cfa20dfaf43f021aa44c2ae8ce00c0e5026c256625591f6c88276baf2f49f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FR80T0000231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f82748a223fa07b77d624e62d1b8b360aee11a507f0591ea87992e5d82752f8. 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/FR80T0000232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b458eed0448f6fc299dce2fac750296d838e7cb580040883b6e7aa2f4beb30. 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/FR80T0000229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d2a3d1bc2ae7afc411ce6c944592884fa8993f1294396f7d81f1a2c1375c2d. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/CAENV2342125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78667c438f0a13e1c8f47d7a413e9df3f339a3b5710bf9cbf28ea35165ef697. 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/FR80T0000248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424c8da55237b9d00380d867698dac0cd7a7a482690995d507e77c8aba8e2f9d. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/FR80T0600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51ced415507ea829c89525a94361640954adcb8472cbfc7b7e91cf6c71fe6e4. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FR80T0000251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ded1b7cf16fd29e9aeaa0da890e3533d8ab762ce0aa0e9639693e8823d8d58. 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/FR80T0000246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244c512e10753da7d5258115e31ee000f3a7046861d00cc83c18ad9ac3ec2dd0. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FR80T0000249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563e2c1000ae1e3abecdb69fc3c088b735bd1c220d6fb8b63174cae812032934. 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/FR80T0000252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb635b315e7d9d76889d5e774fb03e74abfa4356307df38072c497ce0e3bd658d. 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/FR80T0000253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0a59cd7c5a6522900fd2c2dac055f55ed231128ad787080e5430ac086d0c68. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FR80T0000254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01c20464f1a7ec9baefb84583ef946b139be36f2ab479561ed88618c299c885. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/FR80T0000255.
Les Plus Belles Mélodies De Frank Michael
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961e3e62a5605f842a030679d326e8f148c3208c66e4e0d6206d387f3f4f3e78. 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/FRY510887774.
Les Femmes Sont Faites Pour Qu'On Les Aime
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4064e092520f72d2ae0e0c6f3b26fdec9a3654b5b320039060cd5ced19764b9f. 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/FRY510887775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3159fc322b3bb9ae6a8205c2f3be75c2ab57395fb7cbb57b37caea4584ea9b. 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/FRY510887776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a5a97cda16b7c06d0aac0ab96817f67bb86cef7fc8204190c274d209b2e0ac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRY510887777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56006eb498c4e0b416a749289b4734188b11f469ab6bf8f40c21e8a3e34e67ee. 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/FRY510887778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fdcff663b7da4aaef75fd4b4dbc84e0ee313d09952042e558777849679aaa4. 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/FRY510887779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf273b9b90b2298de0dea49273b9a633b5e35d06322086a8221dd80d057a261. 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/FRY510887780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626dfbc711c59999b5c61691ff3967c9d7ce2f453449be6a0a8be240bf82be7d. 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/FRY510887781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57c7b5372669cd459915e62bdfad93c2c61715bb4f55663057eb813a1c7c2b2. 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/FRY510887782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67bd8532b747ebd5a74320bb89b1e11d0408ac5d56910b8c57f31b2db9a9686. 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/FRY510887783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f54c65ea0b82c2646bb9a17819cbe888ab51a0ca0c082f8cd93dda44ba0cde5. 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/FRY510887784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf5e6c0c88462fd77580fc8660d926ca3e7421a358a282b0b97f2e185a2d78f. 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/FRY510887785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554cc3a03e427e5277fd92198b64f28365c3bda2174e879af9585c9c05623f1b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRY510887786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39d5ee9923350cf43b8dc99b75d94d844b7948688d5eed319b69eae4aa6e891. 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/FRY510887787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acfc8ce5695abfe59e9c002a9baa8ec255c3333d689cf3d09e4aaa641667d67. 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/FRY510887788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19f9581c37dda511a72ae52360aa01c5f35b7fd3e199a0a337289f4231c7819. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/FRY510887789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dca6008f66baa4d930b9f0947821095e6c1470c91457c82ed6406d0aef9417a. 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/FRY510887790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30b9bf0a86a8b821e73b1a0bb04daffee95d861efe941c128470c8412619c53. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRY510887791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b458eed0448f6fc299dce2fac750296d838e7cb580040883b6e7aa2f4beb30. 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/FR80T0000229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f82748a223fa07b77d624e62d1b8b360aee11a507f0591ea87992e5d82752f8. 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/FR80T0000232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cac1957d01888a2d8747ba5ef8fa00f5ae20b7d799309dc1f5984da2f29ad56. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR80T0100543.