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 0x3fb6f37eabb4d4b3e8a6462fcc6870f0900e2be8b6ad579c0eef1178cb6b9532. 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/2b5edd05-bab4-4fcb-a56a-a8e8517991a8.json and https://artists.proofprofile.net/proofs/artist/2b5edd05-bab4-4fcb-a56a-a8e8517991a8.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 0x1b7d6f14cc3b08cd6efb5eb77287d5c2ed2bb1b478f76c62152872d6d6c36377. 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/USCGJ1593643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b28186eb7f309b35c0f13c062f0dfc3f3ef5d382630e55e6c2f373c1857e185. 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/USCGJ1593644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce86f20bb85d62ab12e012ba9449225e3039151c80a0b1cc567d33e9818987b. 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/USCGJ1593645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74b9308bf1a0b60a8166fe445a4d5a51cc89d62f0d23696321ebc5397d4d08a. 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/USCGJ1593646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a10509cc833f076c487a760da7bc51527ecd4029b35038445e736a5b278b9d. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/USCGJ1593647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb0e4d24cf28d5fc7731f02de6203fcfbf0d7e9124e88c06f3af498631e78d6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USCGJ1593649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a4fec653fba59dbd8ebeaed192b6d6fe84543daf25604d4c71fa08c295b1cd. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/USHM81624668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabff0adf0d14730071d764b8ace774095629767ee42d6edfa28207b635f22f00. 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/USHM81624670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc11cae9bde77d3f632121bba0262c5fab469bbf917f2fbf01e517337d524e5. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USHM81624671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a46cedd714d49f512be0899c0db5ad5372a29e1a49e10d5406d3cc4a744bc04. 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/USHM81624674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafa4a9d1954bb16170ce9bdfc727daeda6a5ef111d8f9fe60077fb603d7baf7. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/USHM81624676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3a78c80c1b56089d4ff1a3d7e8058d0c9f1d68fbeed812115ca7675d47a3a6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USHM21724995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d126291c15e53b252a189705d1570a4e8b5dfa41ec05a2ced65493b186d7fa5. 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/USHM21724998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131751def84fef8593462dff41fa5f05f3d92b03c521784aebf3d3b32be72535. 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/USHM21725000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fc4423ad90eccb254033820d8ddce945286cc962bebe217f64863112223a40. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USHM21725015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ec77d7b6a429a5f1e7d3c5c7d7603e34788791e92b30f4acf6a3a0facc8914. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/USHM21725016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf246739963b2ad920a90a13bd1eac20c98c66953a0eb4e6b40e96a6c69cff2b7. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:52:22Z), 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/USHM21725020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81b0842c0d8f82ac01c19f08cb3cf41e67f65159698e1ae3f934583483bbc94. 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/USHM21725024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35575c68f8024f55e81c4981378c8c136c603a50c9b200a10aa36f09d85fda87. 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/USHM21725026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd657cf5b1e8734841f28885e1dcbef6f7c16d6c65634583bfdb76a71bdfef4bd. 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/USHM21725002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8b18f679e9534274d76c9e99c77541de72b633ca39ec8e3016abf2c08e8c89. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:28:24Z), 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/USHM21725004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b85ac168a16aaa29df35d935f6c792336406318fa957ddcd985e7f77bb081f. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:22:48Z), 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/USHM21725008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31ce20b05635664bbe91cc22cffd401bd5ef586c937033fac929e9f337e32e5. 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/USHM21725009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15210e98218f8bcf2153778a0d7de02b675148a6cefa3a413537b20eda4694e. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:04:24Z), 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/USHM91929973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe613b6f587d7d8a6e1be750bcf1dadc7de97a50d99c348018a9c9103ab810ec8. 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/USHM91932319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fa176341ff17163761a8a01d6cc75c4afe47b64e9236a22e0f7eef97af47af. 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/USHM91932327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59b66324af7662ea473147431c74486fe1e565525f9aafa2555b9f41a33fc19. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USCGH2025200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b326d2da5737dc65f6841434aa279b5c87021ca5c3114986e4550be795c3f3b. 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/USCGH2025213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba023339257698274b5f77c005fa7a864f502697485830152ce052ec279bf9e5. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:23:07Z), 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/USCGH2025214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f46066a439a757d6380376244f9f40b344767bcfac00c39553951ff3902420. 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/USCGH2025216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41db941e681f786c83b51d7638b055b8f41873ad6ac7f62a1fbacad93cc6b8f2. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:05:14Z), 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/USDY42188863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01d6af87895de06609a8ca43f285f6071d0ef5baf4ce54b33833c23010bb7eb. 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/USCGJ2390752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e641f1c48a04ec05d46f76dba39e504dcd4197774b0f6760147fac28a414c58. 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/USCGH2487432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47336eccc1e61066de3e9f2841b1b85e97f196f8151d60b5804e55c6ba43ffd. 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/USCGH2487442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ebfe9b1a595d56dd1feca620fcc497574eecee645283742d2fe35f07f9dd62. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/USHM22463458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc665e24bc01a710b59a4f49ec2b1c0a7b2231a4b1881d3ed6753ac4e2256c01f. 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/USHM22486949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec4daf37ea8eb29204eaac5f2d9b1cb935b2254dbd822a408cf532b1d8bdf34. 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/USHM22486937.
Cielos De Ensueño: Viaje De Canciones De Cuna Para Bebés
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2dfa51ad344feb9017f5609e621100bbc49a32863e2c06eb13fc619081e4469. 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/USL4R2435735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1840fd0b9919e8726dceb5d00b6b73fb70c8c26baf234cd6b4541005c9b50cb3. 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/USL4R2480923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137fc56ae5868d5e0952cf51a21f118191674f0ebd3d045b160d4a35cd535c69. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USL4R2480925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91fb2d6ccbf84765dcafa524c7c9fddfecbccfbdd6f8d8090ad4221f96fcc0e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/USL4Q2546150.