John Smith is a common personal name. It is also commonly used as a placeholder name and pseudonym, and is sometimes used in the United States and the United Kingdom as a term for an average person.
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 0x9abde7989ff3e72dd683a48b8735e432ed428203c1dd1ddfa5773cb2f3610757. 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/624e48b1-ddff-437e-ad1d-00fa6866b126.json and https://artists.proofprofile.net/proofs/artist/624e48b1-ddff-437e-ad1d-00fa6866b126.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 0x42c8d6f81c95ab8f3f8a23f37696fdb2cbf2a5f1a1a69a789d0efbaab8bdb6d6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAID0500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01149010cbbe04244000465256a4e10b3612e014e8ad097f5ed5f875a76f1fd5. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GBAID0500023.
The Mark Radcliffe Folk Sessions: John Smith
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c3a09b4684acd4a7b8ef8160a395e50ddd3c67a62561b6d780042a01727292. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/GBAID1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa37450ceff9dff2f5ad27d13f227364fc66a25c7f1db4d32111c6fcfa7ec35. 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/GBAID1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3f082fa4275e0a39e43993d4c270f647c608c4a81dfc10f3debc454d6b5063. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/GBAID1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc9e4244564170ba4d4cf06f6736de8fb7ddcc329a290307d54c36e2001f9fe. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/GBAID1300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ebdc902a5e5578785c52848fbce911f61b204bb90ec0428f9f721966a2a0fa. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBAID1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac65807f3a9da02347937ee3f94fd35e301b9565a88bd2e92c1af4d6f0d90ca. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBAID1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697b93b4effbe7def69a88ba8f475a87abcd6c4b2b295a46b141164b4f016d22. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKPXW1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ad937d610e92af33302e4eb7573c0207e9352f5c363a7ed3380f2b357776c7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UKPXW1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4279428b1ef3e6667c93f8c1a84bc1666d9b4ccf74eefdf4056c7361dd2cf18. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/UKPXW1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697b93b4effbe7def69a88ba8f475a87abcd6c4b2b295a46b141164b4f016d22. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKPXW1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ad937d610e92af33302e4eb7573c0207e9352f5c363a7ed3380f2b357776c7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UKPXW1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38db9e8b71e29b6860cdc9f72be3f91195b8e1c76fb2129ad7e33cf095cd209. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKPXW1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6c389094eaec29ebde6259efd167099708f39da8a0d624317c54cbc04e44f6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKPXW2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafebb618a5c7ebc30bb24afec3f96325e1c838874b6939773d1d9eafdc9f6945. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/UKPXW2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8218370e4d3ffe0c88f780509f9a3d211b0b511e300e3220ac443af3626424e6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKPXW2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31cccf5782953fcd27431e52038de50d3b368443066bd60046bb2f16e52ed20. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:39:37Z), 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/UKPXW2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3830796c8474afa9ef5ff86f59bae2210ad37b4fd3c229ccf404f6bf0f19d552. 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/UKPXW2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3f0824bbb57a3e892c2f086b2d40e521840969dfa7c13997066a2b0327ec10. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/UKPXW2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c080efbc46f0d5d8d300d84397c68fc15a236afbea35a97e138830fda476d4. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/UKPXW2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2300b85be7bd3a513ab1728f4a6f3cfb0b5e4f8f4177113f34133daee80cdc91. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/UKPXW2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa35be85ec74a95aaf42c835c5960489158dd2836748eb906ed3b01cb08d359. 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/UKPXW2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d659189b9292a6dbf95e84095c8da66ff0f0888ce221afa5282605a72ea93e3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKPXW2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328134fb23ff48df791046ef5d6c5698ea8995512fbca74cd1a93b668ce0e2c6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKPXW2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9d8ade17f596112f71804e0b486add9ce7c692fd0524d8247979842258290a. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:51:03Z), 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/UKPXW2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be7a92da8eb2999c3efaf205c34931bba5550bb9d727602ddd2c0843dc69770. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:22:47Z), 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/UKPXW2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e1f6e47dc1b16e4220e5127ae1b70779f14c4dc4b3a1518166bde9f39d9eab. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UKPXW2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d7313b7ecf293fbae38be7bf3a31a5c591b73c98b723f0d6bd0d940be2f9b6. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/UKPXW2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a700e7cb9d534a4e8d780c656ab0afa2a91dcd0a69682df1e346aaa8c205f46. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/UKPXW2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328134fb23ff48df791046ef5d6c5698ea8995512fbca74cd1a93b668ce0e2c6. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/UKPXW2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9d8ade17f596112f71804e0b486add9ce7c692fd0524d8247979842258290a. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/UKPXW2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2935518cba46219fa7e7193f34a1ab70f814e49e289d41a26d738283f1b95d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/UKPXW2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76faf08f9e241fae0d51ce53215ed53806038e9d3a244f0475148eeb8abe2fa. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/UKPXW2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1436b826639e509887ca23ca03c9d3df9dca743ad713ba199c6512e395818307. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/UKPXW2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f4c60fc721505441697bae5f5435945115636f090dbeba261d040c30008d14. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:50:11Z), 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/UKPXW2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ccd9f95e7a1407ca3ddd0166ee138d07c82674267d9eede7eacf974a0b4585. 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/UKPXW2300011.
Relaxing Piano Music for Study and Focus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cc057b906bd1e52aa3befb4cc1680a7279de6127d1abf985253629a7349897. 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/GBEEJ1900386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9493c89ea61454fa8f72e85767f4ed676197951c94bc72c57a107b2a28dcbb55. 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/GBEEJ1900387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884be0dae1ded9033993c2bfbb76576cc5ddebc40d057e3dee6ea6409ba1eeca. 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/GBEEJ1900395.