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 0x626bc82526df2b36388dd926d6fe86d8b77c22ae3c9353d6b6ef6157be4b32f8. 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/eb5f2045-fd9d-4513-a0f8-a29dbe1ef49b.json and https://artists.proofprofile.net/proofs/artist/eb5f2045-fd9d-4513-a0f8-a29dbe1ef49b.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 0x991e32c261c0fe30b49578a3637f7ecd100ae23d3a8cf46fcd7cbcfae0e83f18. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:15:56Z), 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/QT3EZ2458720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91977f616d60e49477d2ce431643c96019260ca477982517cf29cfa887b62a12. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:28Z), 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/QT3EZ2458722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf622caf218ae5ab50574f1004ef5e8380e4362670e6cce878d35ddc13d274016. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:30:22Z), 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/QT3EZ2458724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864d7d5f00e0d8c53effde358c406c8f44bb7948082f41cf75cbfe4988f7b728. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QT3EZ2458726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c051f64d0a88347db79e11430be1dfdee9f681e1898033f0f84d48258d1413c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:07Z), 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/QT3EZ2458728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daeee28818b9ef5d8dac1d7fa1d0a7b0e53fd375dcd526153a54b5971ff03c5. 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/QT3EZ2458730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a1e6e2472aa5ebf7b2ebc203e8051b07264dadcbd621117c87960a68dbc97a. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QT3EZ2458732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6951ae76b0f405ddcfe055b2f09d2df8f2011a982285cd4133b5c631776773cb. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:22:42Z), 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/QT3EZ2458734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a7e7101477fc35d9d07636234db465f46286d07a9bbbabec0caa0f29a45e58. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:37:40Z), 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/QT3EZ2458736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e169793c8941cf116ab5c0df8d0a501f54a9327e95f55f2505497c85b40491. 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/QT3F22491947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e76a35dc7f88c4a05d18c1fd3a13670b1c286180cbc77a18f2d05ad79543471. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QT3F22491948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36c72fafd4439bb74a05892fb37519d54701f556fd3465ec0a69986166f2b97. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:47:56Z), 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/QT3F22491949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aef2f7cdf32cf090b0185b147af4af0d48c5b60bf4228254bfd20f19af9b73d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:06:26Z), 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/QT3F22491950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9f06358a87752a4034f1838165c91cfb80d94c0c7673aabd7d3a51c2edca1f. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:08:27Z), 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/QT3F22491951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af4eb82524ac5c5f5cbe86788b803ebf326d8130faac20718d789f8674ad767. 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/QT3F22491952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5756cee991eebe86763b401447fe1dd7e243257ec081f6c579ac43752cd8946. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:40:11Z), 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/QT3F22491953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e903a5262608a3654c46feddecab7c11ab915674dfb2d6ea69ee5320bf55cb. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:26:49Z), 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/QT3F22491954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ad474df68f6d10b1f31769d07e87edb0ce3a87c021a9f99d94529c4d298e99. 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/QZFYX2583065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9343f70907a328e6ba348a05b8d9182bc11c56813768c4a3848b158f0807930f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:43Z), 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/QZFYX2583066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b40fb7573394bbda357a264032f1a4971b83f32f1a47fa16a368793c9d0415. 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/QZFYX2583067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c177009db1121057816b9c0beb37335894b7dfa40ba5be83b06d0e8943c52ef. 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/QZFYX2583068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28154f1d80dcb330e5c9337e2a1a06dd68711b551e46f569c89e57aa141522c. 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/QZFYX2583069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bf4175c3d283cc97662bae3f0022833339d91e8470305d75c2ba240015aa31. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFYX2583070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd225053fadf3375c4c4ec0242c574a0be77ea81960316d08642013bd8543c15. 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/QZFYX2583072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b647eafbcb7d68131a54e85de0650a2b588a6cf5dd6c1df84ba2826485f9406. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFYX2583073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a92a0fbe035d565f1c2330e01ae901993ad69e01d4266f86850fad0d8d715e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFZ22580506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb717f7fd61a0048c77c7c6ff5104d196665a3256cd6ba6e57a22b08b2602873a. 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/QZFZ22580507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc835c8249a9a269ce4d168a51036b824c25ea4cbc8267e78392dc87c459d9e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFZ22580508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dfe81cc1a893c7359a6cf3f585e7cb26eeda669d12b61edf6722a4bb90ead7. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:10:50Z), 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/QZFZ22580509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6872828602e2e555e1bb22ae8c66e72aabdfc7375c245ecc927526e00b714e58. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/QZFZ22580510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461e5e1bb99e27e08b5225b12970a35cff59cd5aefff60f0cc40ff93b4e9ac6e. 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/QZFZ22580511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c57f13b8444904f75122202c6a969157f818ea93a71c2d956ec5ddb13fef81. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:22:09Z), 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/QZFZ22580512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0052cd8b77376c8ab950e505a13cb8b9e45dc9f179062ac1c09762435cb7ec. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZFZ22580513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e8d0fa9acd00450923bc23fe384a468271b08363f91abcafda983000146e14. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZFZ22580514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34d22e745dd1df883d5d5c56e325fb7a94a96634fb25fe9ef3603d104172e31. 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/QZFZ22580515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251ab8d66e17f0811bcf1a28789473e4001ddee842ed24c78c0edb08f5cef3f6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:02:53Z), 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/QZFZ22580516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fe8365c211f97841352fac75a4a16f02051622bab6950e8c7bad32e4c99a42. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/QZFZ22580517.