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 0x0fecbf9d0ace398d6564f30e86fcaf6ee403e483ed0dbdca3ad60c28f9a43650. 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/9e99dd9b-9119-4d6c-992e-207b24a8e6d1.json and https://artists.proofprofile.net/proofs/artist/9e99dd9b-9119-4d6c-992e-207b24a8e6d1.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 0x330615f30bffd023ef5cc0fa7ecc903ab3e6c9ef8643670cd6ab86516683e5e0. 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/QZAKB2453856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09a14f8fcddcde1e797e79ffdfaf58821967487c94700fc60c8433c356c7e68. 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/QZAKB2453857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b12bb07b995c6c535a531d20c5ba26ca647d2c6b52e59fedca242fbaa4aff10. 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/QZAKB2453858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9677be11d9660ecff75cdf22174fa62a9b4ae9e659187f49f014246a94962a. 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/QZAKB2453859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce08a03fce063ef726a735f58bca23fc631b98f64bc334abb9b5c8121193131. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZAKB2453860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ab9f3e5110c6088251bf7cc5613823cdc7b5831642ccd2a24ffc557d33af1c. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:36:56Z), 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/QZAKB2453861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33b0265c11ece3e109a225a6ab43885dc3860675783fae819c17cdd17d31649. 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/QZAKB2453862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fedbb91afaf182dc87ed0c47b0bc522d94d4977ef664ac1bbd1663ec33644e. 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/QZAKB2453863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f526e67c88566a9850fbdbb3b8dc765976225a29239695100bafc328213061. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZAKB2453864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96567a4109f101e433c0d4e52d5cf8547cdb43ca911c37697026ec8487c80ab9. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/SE6SA2458284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4b5e811748cef6aa8bdcc8a934de8561fc3b8d7b198ce1a3a96a9d79c9f8cb. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SE6SA2458285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80129de2fb8347fd092c187b586cbf5a3f2d31a0d208d7aa13c5df1ae2121ba4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/SE6SA2458286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffc717e1669b65e421b2d802b0f8f3f01572511108c0e6c88e22bc0dcbfae59. 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/SE6SA2458288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2f3e43e688be41b820c6580e31d84e96d1b7da206524265272ad1037f99193. 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/SE6SA2482830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0870f98ffcfc78d65ed0911ea8ca3820fa70f5c989bdc2fc24d33fb891f086. 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/SE6SA2482831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddc0303278922d6f1fddc4f2d2c2617a7859aa05f35b25b72945dfa67ab0fbe. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/SE6SA2489506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66324c1cc31fa877a91f007c7ee610e5efe5f1194db84bd797a15aaf4120b1d3. 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/SE6SA2489507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f642ef8e7bbcd96538c40d5aa3f4b76127d46b1a7d2ac36963f45dbbd9f20f7. 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/SE6SA2489508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf066f68953434bb100c50e7b66f84331b9a6f84c2f72bea9dbeaf9b801109a19. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/SE6SA2489509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e83435dd46b559bd32805bee26684aada981ded008c6ac11621262298a1e76. 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/SE6SA2489510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b16b12cb6867f572350cf5eec5f6cf75c4f335ff1ecbf77faa077f8b5170832. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/SE6SA2489511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38963fcae8f6cdb8e3801d10a48d0fbbbd735ccb8fe5dcda66c4b498c5b03d7b. 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/QZAKB2446274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71ad203b34867e594fc5d7b797faa2becc074e159d35b0edc200e9ecf2edc61. 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/QZAKB2446277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac987f46a4826817c79fe84436cfac3927111c0d0cdea506c501a638687a2df. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:50:14Z), 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/QZAKB2446278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932c78350e6303207c7d7e4969ca7e2ac1da9a90126c39262a5ea65117c5bc67. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZAKB2446279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05de1ad3a2d6c7f12ed88e878255d63574ba2a22afc7038d1855628dae491fbc. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZAKB2446280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfc5081def3a032216d216b0a28a891419601a8bb421c5212e73aff5589bc7b. 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/QZAKB2446281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf23269b369d457f35bbedb5bc5b45ac2cb2166b0d87b486729e5471483107e3. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:01Z), 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/QZAKB2455653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ae62867b5654092bd631523a6f9ce725289b82432ea36452e71c122f9988ea. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:22:16Z), 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/QZAKB2455654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9269c6c4329329acc82858f32fa92989bb8c6cd000d380ceb59b53a419aa760. 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/QZAKB2455655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f44d8c3c77eea45dcbf82954a4c3bf9f92aac776277f5c14fb855402d4ae787. 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/QZAKB2455656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1dddff88e0a2a6605cab5ab20dc95c5c2f7d974d1af4859ae78853a3806690. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:56:00Z), 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/QZAKB2455657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1913874e5146cbbe1d2c522250376a3cc058d8d19ecd2dbe0a2b5b05470b87de. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:59:39Z), 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/QZAKB2455658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92fa3ce2f382cc8558626474c7ccf38c8bbf7f31d26f53ffbf7efbd17ab354f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:03:15Z), 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/QZAKB2455659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986257a0fe0266fb2b22e66f221b12e048df4430ee340eb26909a1e79f882f86. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZAKB2455660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470bd65f2b7d13358663d84800a19779f86a717d0f3044318dbd3df880d867dc. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:29:31Z), 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/QZAKB2455661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb670330381bab48973838943bc8287e0970f33ac67d4557a2725d0711ab7e0eb. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:25:39Z), 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/QZAKB2455662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe790977d2f3e6b7d8351fb6768d12a137819562759b72a90a4ecf006ae8dfcb5. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:45:40Z), 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/QZAKB2463273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7a05a8fad05a3e06d705833289421e4910b9430ee1d57e2eea8f2b2468c672. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZAKB2463274.