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 0xa770c15b69c4b949b0573ac851b52a56d428093c25b1d55126dd3848c461ca9f. 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/cfe106c2-1710-4686-aca8-5609831df116.json and https://artists.proofprofile.net/proofs/artist/cfe106c2-1710-4686-aca8-5609831df116.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 0xc8f17003d2c7214f6923655329cc5935fcfb964f322118ce067e6ad8aab46668. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTB22344158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9409f973825f1b23da6a42a0b46f6aa455402070add4638cf1e2a51463920cfa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTB22344161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e61554ac6a9adfaa3b04dc8aca28e839e17bb7a234f2c2760d10a8a5e389db. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZHCR2300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c6797fd602835e332bd553eb2bae7cb45149dd5ce2bc2fc9198d2477796715. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHCR2300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65daadf747835242d3aee3d03f04147d4746e0a78ed5b5f1b114a53925ec1983. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHCR2300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707ef0c8741c39397535de5df0b99212789fb54c6a7bfebb5a55ac94a86934dc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHCR2300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f055764140d0bcfe987b2e9be1969d94bdea760cb67b891ee5df096f2b0d1b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHCR2300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c4d3e249986118a8b878d2b9dde9c15a643c9fa46a3b231eb512d532707c8b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHCR2300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900bcb14e9b35658c5fce1598177d82ce83fea61e213ce117893bb2e75f93fa2. 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/NL8RL2428028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f877eb1869b9f4cf0525a6cee954d38a8812b783f70081a9b5f467cd1af134. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USZXT2455132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d95e97336fde26391e64e1bfd9b0ff19ea95ed5f05bd074700363eebd64699. 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/USZXT2455133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2891e55be57cf0e48b02071e63fee8ce4f23040e7ef96b62ff2785d806cfc9e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USZXT2455137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7d89fd2be352e61187a1007fdb71f0b1c4cdeb63e3cb748d36885e5f74278b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USZXT2455138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67f85e7c5cf7270b78a8181a1bde2c42781c0d46fa747d1df6fd26e7a545a5b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USZXT2455140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42149807f7e3245ea28e9f95e748131400599b07c273cf69a3912588bde92c20. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USZXT2455142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dd42c2561a6913fced52ab13db1a33bc117219a6978110fe176f26964e8f64. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USZXT2455144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524e1af6b54709e7323caa8425d5ecc7f3d735ba1e17550fa8a630a0eb739aea. 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/USZXT2455145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d888c4bd23c075385e93f6b2061c99d5d58ab3a538d81b1de4465676f450ad8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:24:37Z), 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/USZXT2455149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79f5228cd5d4c07bdda7bade66dfc9351dcd3ccbccf34d5ab94f09274b8fb86. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USZXT2455151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b8bc079decab9b4c8e3adc52da86e05a8a6c1e21e73105c7c456359c8ffac8. 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/NL8RL2428025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd6afc35a961ad4a11f0e9959a32c7768e16a0e07867f8218dda4e78709180c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL8RL2428027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900bcb14e9b35658c5fce1598177d82ce83fea61e213ce117893bb2e75f93fa2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NL8RL2428028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b15723cc4f78fa52a10ed3ae96a7e579a54e2e118216c21a44cc33259f0194. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL8RL2428030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8ed2542963b3fadca63d31e629eeec130d6aa73188fc06102085bb8ce93685. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NL8RL2428032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527ed3bb05a005282d2053dd89a4efed84bd07d17f6f68f2b2cc21099e44762d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2516206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39ffec244fb283fbc63d5e806af8a17ccf41b0a5a93019898d81faac3c02f10. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMHK2590222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4506b88e530f4f3c13712385febdca265ba1d22a68ec13114a610ee16b771800. 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/QZS662428016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524e1af6b54709e7323caa8425d5ecc7f3d735ba1e17550fa8a630a0eb739aea. 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/USZXT2455145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a658c72a294e5ca40c3ac681441f62f56913a94d5463d63950a0a4a58290ac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2446206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcbae9950cd80dab99679ffa8b169c3d0e67150848b90f1c656e173daa158d5. 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/QZS632483209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a8a87a18ef211c35f4a7544fed7ee0717688f083f66270c95d5bcfae78a508. 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/QZMHN2266224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707ef0c8741c39397535de5df0b99212789fb54c6a7bfebb5a55ac94a86934dc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHCR2300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecf432ab242ece9f8e90905792d623e60817a45c8af923ab8e4191f257ef553. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZMHN2384400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6293266d575d04c1de11953a75bbce49b838d7752499127bc348292dd405ab4. 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/QZMHN2359818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77407a5201a119980009e8d3ec62a253921bd682a21bff6865c2fca4b23efeac. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZS642375932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497263df48d344665b908a5f65097683ac6adf0832348c56b62f040a4c7dd9f6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMHP2318180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1f008d6aaa46f3a6ffb3b3e98cae5b3e1413a82af47ee569af4bcefa2181e9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZMHM2398375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a3be89fd7295241242878fe9d59c33d325befeb2660199be07a6a129e9ddaf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6P2254358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92805ff625405978431ce5e946e3c82ce608f49cdd1806bde3d65b517ac79abb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZS662213798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fee2d0550eb58587142db54831cefe27e2d5d0521232d9093d8f297641fc930. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/TCAFM2127360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf760d098e7c71a9283096b936770f6f4f6141b2d2eb3debb85addf742f3d8c98. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFZ42168122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463c637c53a745b494143b12835c9278c897cf9c28212fa0359420943bd83b0a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QM42K2148421.