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 0x83f513bafe50ddb826cb4cdb5af0bc28e5fcdc7d7c4ac7905cb38c79e1926c20. 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/ff37839a-aa51-488c-acc3-f1dae11c2fe5.json and https://artists.proofprofile.net/proofs/artist/ff37839a-aa51-488c-acc3-f1dae11c2fe5.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 0x17558fbd1dba2542b1d046d670cb0f41c105f77713e680122b52a469f6885de3. 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/RSA221813460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23be1446e2dc79eaa74e71cfbfcd7270515aa1aede445c4ad94ddb2ab940f404. 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/RSA221815091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546a6c4f9d35923d5e16e4cf7d3cbfb5297619558dc4288637175a17be59ca2d. 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/RSA221815093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dbc853dd6a5d944e39d48df4b4ae2ff2ecffbbe659f00454f40480530ba4e7. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:01:03Z), 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/RSA221815094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6578b82c0cfab5910310e7c7b48911461b9461c3d9f0db306b2cf77ee0cbbdfa. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:52:08Z), 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/RSA221814574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e987334969c40fdf65fcf1cd681e161262ce90cb4941c759e7d627099ccfe8. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:41:26Z), 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/RSA221814575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5e893eccfe9b072d3c01e7dd2567df4a891336da55ec1093bf362dae122194. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/RSA221814576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727382d0216b35024b05e61ce02f1a1c94a3ffc63f61eb077d7de53179330672. 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/RSA221814579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a73895e01dc6b0e286650676aa1e698da949d67daf3b40b34624c7abc351c49. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:04:01Z), 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/RSA221815487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e03f85417c7c35d02c9b1fcfda442f95b05c87f75f73100cb6c1955b5751547. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/RSA221815488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34161f68e33be973501c946b3125ec097507d79c96143dc2451324d950d35253. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:47:11Z), 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/RSA221815489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692de82325fd04e8ca03b0073273170fc7fc95bc77837068a4faf0d0e0811b76. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/RSA221815490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57391aa9ebec88611ba5cbff2ab03664b016036b26c83489dfd1fd497a7ec14e. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/RSA221815491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d06c649ceb8b1dd0d0c1730a41200d9d96f813db71136e92c08b3fa8a74205d. 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/RSA221815496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92aaf0943d28622c2a1d73013545e1550a8385fcf6c2c989f1035eafaf20e82f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:33:06Z), 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/RSA221815499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a63b2465d392dd12bf3d29afd044c422b6c530dcbf6da3bd05f69693d3a1d9. 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/RSA221818639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4060959201faac93f03307da0bb9af63ef5d72d5176be287b2f5ca86a6ec01fa. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/RSA221818659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665b1a99eefd0d49a14bc23bb4c0b066e963016803b98f5c189d5459c6189213. 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/RSA221818660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc68eb5ae850024655d2890839b4a74d15e54e9ae6f593086864e65fddaab2b6. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/RSA221818641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba5612d949a7d06ce6e99cb6105731bcebb8f7d8cde60ff8ddd7bdb5847050b. 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/RSA221818661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd853ce9ce19535f69fc0831036bb339f35c58a079afd696ac5e52d535c52919. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:56:55Z), 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/RSA221818663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869dbc562337ef83b8cf9adaccc5d4ab6ecc1109c8add76d47e21f82b57b46a8. 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/RSA221818650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8e6aeb822bc3ef6c1b726db48b7c1574d70322568a0485f3641afe03838840. 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/QZAKB2341661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48afc6d464134278b9f569badb8338cd90971ae4cdbc0331986e75362c25c497. 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/DEKB72520005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68efd5291d958a229a6ce5e292708f288950a56c85703fb11fca3fae6e6ded10. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEKB72520006.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d03d1a6f3a0e9d388b1f9cc6f90fadf3249f9c52e394168f67043d1a2e0436. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/DEKB72520000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e73b7351746ebd7f5ff39609fcea4f38080d313dce0a67dd88870c3984926a. 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/DEKB72520001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffaab0e6ab0900dcba82001acf1c8aa655b315ee8599c30259ff29ab4710546. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:49:15Z), 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/DEKB72519999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721d794f7438676a8508b6bda3562d0f455322f2275fc3d340eaece60673e758. 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/DEKB72520002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6888679b4a216842979196b5c05fa40ea575ad646b9b9068c084dfa46a7a2b8. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:43Z), 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/DEKB72528439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a5d0e07b7c7ef1f6d31ebf37bc08eaaa99602ee1f4e3c27ae9ea1257179ec4. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/DEKB72529146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6e2bec0ad6f1e54acbcf21722f85d29b6c83d610a2f2c3dfdfe6ea97da7efa. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEKB72551503.