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 0xca080a406b935e36c84245a5eb7bf78f46270258bc41bfbda61c2325f6f719ec. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/970eec2e-6197-4c64-9987-4f1cc5a6143d.json and https://artists.proofprofile.net/proofs/artist/970eec2e-6197-4c64-9987-4f1cc5a6143d.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 0x6ac1aec5363af30ca29d396dca41bb9c031b32ae2af2af401ce79d7f50dac4e7. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GX3Q92444942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8236acb8f71110f8c75f08582a8c486681cb7144b68b21a1174f3671c54b79b1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX3Q92444943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f028f80ab03ad493f963af93ef7983f91a425def60c1ec3da161f98692edb8. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GX3Q92444944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba691dd542d310cbd9ff00a4ef83b1692e5409884f87974d81a17ec12abe3ae. 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/GX3Q92444945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf08b07fe02eab5c98a8fdc8d8d2a92525c3dd47a4f98f408316e6bad8e9d009. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:39:54Z), 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/GX3Q92444946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383ee27355ba087f1e1af28c05e922e607abd6405dabcec626554c3ddb44e49b. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GX3Q92444947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a329f4ff878ec9805a5a7959eca0c82918c96c01a8a86486470f8f846572d5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:03:01Z), 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/GX3Q92444948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d151bcc5b54834bb1c77bc15065cc8d530ae6b8bbad56b062d2211b2709ba67. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:20:49Z), 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/GX3Q92444949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6e4aea3aea820fa59ef1f3f8dad88b22503876dd1f62cfe98521ebbe62a23d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/UKXN22415853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10c8cda8ac668dc105317f212a25370489e9d1e7eb77d08a28b6492e4a40859. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:16:08Z), 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/UKXN22415854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fa984e56cfe92629676b3d876067cb160b28aa2cba90fb598f607b80c926ea. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/UKXN22415855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2214e23b35e648034f55a5f23bd98901d96af61e948c957c5e6235e1f9eb7ea. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:53:35Z), 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/UKXN22415856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76dbfdc7122880fdf2d353f56a2c7fe7d47b92310e49a6583285e77fdb61357. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:47:14Z), 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/UKXN22415857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb714b5dc576e85886b7e6128c77c426df3fedb12cd272088279b94f87d6f86a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UKXN22415858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145443252e5df7cded2f6ad6f8a2142167026aab306aee109dc203224c017b0b. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/UKXN22415859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522059a07ff8ce809927b4b49509d8a76d7aadcd295ef33ba19fa07e2d1765cc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/UKXN22415860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8675efb72ead1935ee79063ae84a7c1bfe0115c6c097b8768fe499d488451c8. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/GBMA22444643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3951d02cef466af39a1f4e8bd0b5d3db4ceb5b878790872ab0a695f5dabf1a8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBMA22444644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bc0fda3711208939a9213531380d9eb6519198474ec0d8a09e13d099ab9fa4. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GBMA22444645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011835867fe33b54c0ae4ca6eeeaa62580e8ac7464361de7df125f3c08fbd8a2. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:00:07Z), 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/GBMA22444646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc227a40c7fd84ba07dda4f2f5dde7e31a76d3b36a74cb5e4ffb1d1c423129dcd. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:55:31Z), 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/GBMA22444647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f04e3c952e14a8fea3cb50ae365d0126e3f1eb38b4f7d0972dd27ba379e4eb. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:57:27Z), 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/GBMA22444648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c99e68b666034296963933257e1fc965f643e632e6c47ff63b310b50d36daa. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:56:15Z), 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/GBMA22444649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36917eed63c6a81e0973a175623e226d1803e55c065fd7f604e3f9c3e4521b42. 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/GBMA22444650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6818440690c6b61d00e3b709e36ef13fb7f42b96adfd272fa173cb09bd930cbf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GX53U2337235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf363eacab6147c3651c5322048bcabe05b9e7169c5169a25485cd44796d2b7ee. 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/GX53U2337236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647802242cd048cbaf03a54377a3f353b526ed98c3ea64c8cf252e59529cb27a. 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/GX53U2337237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8ae386befa516d9a51ee95d3032b297bdc57bce63d9f76573920a549d95960. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/GX53U2337238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e6c7b55425bd47c71d01b26457cfb11a2423e9f0f8e6ef401d8909ca948b59. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX53U2337239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679c495095d1c26a4a810888b29e28a9bea0cc06fc345dc0cb2670295579842c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GX53U2337240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf652110a522c925da34abdb4950fe2e51e549d37c350821f4b0fd0ee040b97. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GX53U2337241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eeb62f1cca9e0d88d8eca791bf2826e740e2820587a64d3ba513ac7777e5082. 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/GX53U2337242.