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 0xbddfa543a42524312a2f992a33593adcc4a3e868f48b69e7dfb4e416c52c824e. 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/7eeb68d3-934f-42e8-b93c-8c9a1ad1f97e.json and https://artists.proofprofile.net/proofs/artist/7eeb68d3-934f-42e8-b93c-8c9a1ad1f97e.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 0x2bdf59103aacb61a22809efabf84609ccb34132c6ccc5a71998f6ad0e32c6439. 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/QZDA81863277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81362444e9747173a07976b4560da29f2fb4918c30f1e0cd243f9be05a0a7ea7. 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/QZDA81863278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c74bcc2d0f83ede49dcd6520d4bd55fb3e1a785620c1677cba2ff9ce106938. 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/QZDA81863279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa56234c76b5e94115697072ba7f2a39998948e97e75d16c6db48f81dd432971. 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/QZDA81863280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515d88fc6d425d25902339df7af4a4048d69c73a2b8b9547f6fd31a8ec65a5af. 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/QZDA81863281.
Rīta Panorāma (pied. Latgalīšu Reps) original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d3bece16d9c2b9efe039526204ba1d7e50e51c36fd75685eee673e3e733dd0. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZDA61913234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ce1b3954f88381fb99502117fd0b91b3bf7b397ccc45c8503dee16906215bb. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZDA81909271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe050874568d68709da6b18940b074d1426901098c89cded90b00fd9f4fb753be. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZES51944040.
Kaut kas šeit ir pazudis pied. Nātre (Ep 'Atmoda')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c1993369efb7c8952c3a9eea524a5c04743346f1dc99cb3f86ef7200624b6a. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZFYZ1943603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305ff4bf6ffa239ea87b572270edf20b8b2e21aadd82597a8e3a12abe0984896. 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/QZHN61998976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4980b11c651a2bc27f490d2ad3e15fcb4458c0f63e6d38ae34f523800450e4. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:21:48Z), 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/QZFZ52020843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9621b3883634aa1679f7e6f2e5d1d75ad23a8616e488fe87aceeeb28a1cae8a. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZHNB2007790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa916e49cf5edd3ea7eea01f1556aed801d01ab07c22b28a8d43eb33d59917ca3. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZK6H2071032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85373f2405087da963e31dc3990b2152291e9b7352f366bd6b924e16cb610bb9. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:03:30Z), 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/QZNWW2012930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58d38dbbf70509365ae70607d37b0d6b7971b0fc96a23d7ab472d23b5441ff8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZFZ72154369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39936dd9c63e0518ecc0488a3f12e36b9ae89ec272540620d7b337f5f071be5. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZK6J2184839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81555723e5203c34250b34bd0fcc675843510d7723c98b7302361ae45aed6b1. 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/QZTAU2142879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8774415f72a73c5fbf9e43843824a2f4d6920b96cc36ed65d60b113b42bddd. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHNC2233009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ca0f0d364c2b37d3a45caa29b5c0b8fc3cee4b11d3031d60c0ddcc4d3b7122. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZHNC2233014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927485c43292002ae68738bfd0d8dc3f9562535371f5bdef55eef5ba6fa5b6ee. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZHNC2233015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b68b6cfa3d3e766876c38d6e057da4c829980cca5fb4a082af3d081fb23bfb2. 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/QZNWS2373368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8652e9d7c5d5b5d4f8f20ba3db0ed4e333ada32ded1c7f406781ff7058bb0ad6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTAU2241476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e69b861beb91c7d47cda3c8b067dbd62f3e35936a6d3bd527a4aa890d19458. 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/QZNWS2373370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a622d211be6c170727ea24b40e91c4cea83e9b25787239d6031782386c8ecea. 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/QZHNB2300829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b2dede17818accede7f6c6701a9c27266eb21c14acec6bd3ba41897c38ec0a. 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/QZNWS2373371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fdaf4b4e5935ed623df14c7d1ba700472db7f13480c47177247c8ccb306dc7. 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/QZNWS2373372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e577c07b377f2dd5945fa0642e90ee61ba90abd24e6fb57a80198ee8f10e9bb. 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/QZNWS2373373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07591556e85cedfde21a5100a6aba22a492a547345d9fd138d2ec3136a8e8c72. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFZ62480962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f25695949c11785730922e9f3be0e1c9d0b6e72fe1f6b0eb562691ac1cfbd4. 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/QZZ7S2462946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a721ec6481e14fbdf5137653e76f04a15fae0df93236b422f56cbab24181c9. 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/QZES52539858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1226099111f3de4a7b9f34a8460e867af9d72ce1d821718a1e1ab228b1acc3e. 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/QZES52539859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7450220bfbe46c055d5c10445b7aea07059e46fcd6dbb229406cbc357562b0c2. 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/QZES52539860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b2e08a3f092260c561cbdc479616d7852d040c4294f0be2e7246430d872dbe. 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/QZES52539861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53be59ca623f85f53fcd3ba2228b5772793c20e475590f00917f65b8a9d01530. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZES52539862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6538654ad7cc0128ceb20cb2bb3ae57d649b9490bc26743d0f0ea88b768da2a3. 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/QZES52539863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0095562d6b41a253f63b817c4a884082e6200d6a926d932f9c09e5a7bdc2faf. 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/QZRP52537265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97da703d9d6fa86f482dc11acb632231c2467c40381a4544d328fa1df8fba8bb. 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/TCAFP2127729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f5b0b1adbae8d0bab7248ca7e3a8a57c14482d197a1eaa48ea1277cbef0856. 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/QZTB82441583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86ae29a717ddb540197ad8ec2c6b2ad4ef789f479bbbda24041314da4bf4558. 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/LVL151804545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5226f5bc33eb8c78aab52674d3cfa58107a858188fe0f140833a283b20f003. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZAPG1897187.
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