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 0x3aa0abcd39c11c2400ac5ffb371818f5de8e4a717dde06fcff32c580f857f2b6. 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/6681e266-6441-4f0f-bf84-d9622785e9cf.json and https://artists.proofprofile.net/proofs/artist/6681e266-6441-4f0f-bf84-d9622785e9cf.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 0x6c069ae91eb09915eb0ffda60a7856c8a09317dfe13b7fa34525e27c37eb339e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/USLD91718420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7edbb8c7d021ebbd4724de4a812569347767a9745138c968853205f6f58aab2. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:57:34Z), 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/USLD91719682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f4a888e43aee1a32427ab0efecfa838ffab34f642caf511a74c96eac1696e5. 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/QZE6V1800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb3ec5715794f7dc7d7cfd40638a954410053ca7a7666a116d0ce6f4fc15477. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:05:28Z), 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/USLD91727857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fd03d9374a827b373a482d26c12cdb4fc226f6b7b291333010bbd475f6e6d2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USLD91727858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16824de3ac1e877c44b74d71773a4102e5c82e0fe0512512637d06732f302c8. 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/QZKDK2034495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8856bf33f68af361f3db02b89afbf04e4b66e12cd44cb5ad035ed2ea94fec5ae. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZE6V1800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0602eef22efd0527106b539dd8a789e5b001d5fc92ac4cf65751ca178f10b282. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QM42K2142074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0602eef22efd0527106b539dd8a789e5b001d5fc92ac4cf65751ca178f10b282. 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/QM42K2142074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa8b20b576242edf04d664bd8fba62058775384b3291dbf26dbfa1b58e9b817. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZKDK2180113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a78fb2cda257072dee20cb01556d3ab330cd232b8612e4633792ef4b519eb9. 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/QM42K2123509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2200f3da9a4f7eeef895b83c2c04588a961659a923bb678f55dae053e1979a68. 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/QZMHK2036470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bd42410bb0699aaa8b4d0a47cba8ad9428b285e170763df71c7a636af8846d. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USLD91733120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bb5636beee0e9e638a3771fe90f4bad34e4339943249b2c10eae7b8a311ab6. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QZE6V1800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f8cd459ce2c1cc8dfeb57372743452136aca072501d052a78ba529a315a3f6. 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/QZS632155898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5883a5d0efe6aa81776a99357157684876207c487d157ef88fc7c7efb302af11. 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/QZS642194034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8032c50aa026101a294f6f753b1a28409b8bf75d2f38e4054ed6f789cfa1c19d. 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/CA5KR2207988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd023f12ca28564b3eab00de102714392d2ff6e348aac18db662bab449575e5fa. 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/CA5KR2207989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517f6113b181982cc5ee1124b7447b95d8c474f662bd22b152809f4bfa949526. 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/CA5KR2226604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47189bd9478a8e032b3c6776b8454c54155c0f113a502bdb678519d3329b1c28. 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/CA5KR2226606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26b2178a6373c5403d57a9045df860c31606a1b766b3fcef7ed3b6fa0865048. 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/CA5KR2236852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c48b5961afe9df6a4b67ef61bc7738f14c56a82e7d5b03bcd697d49199901b0. 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/CA5KR2273817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb0de62b0e8ec075adc1ddc104534ce184161d21d498ffda973d9d63cbc7f77. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/CA5KR2293166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e5f1871eecfc913d124e7234a04d2257134e2990a8d3893bf4e9eb7ff168c4. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/CA5KR2298644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9781487be57e8ea49d3eaea8a6fd5a71b32cb4447936f14374ea461b417869e9. 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/CA5KR2305367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c76ec04a03e0e3ad61c119bd615626e2dd2cb8e8fcd4c0f02908db41a36564. 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/USAT22303934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd4338b75e43aa5195cea6e5b0823851f1c35eee080eab049ba4b67e8fb2ba5. 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/QZE6V1800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e18ff828e8efb7fe648ebef1f7f55d78a308ff3a4124a4db097afa4ea5d842. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CA5KR2418187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb461ac86a0def572190d00783ce4ea4c8cedc0375c7ba851d7757fd49591f394. 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/CA5KR2457064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcb8773648e251d36b87358c63e7550d07adee65ac17d1baf264756490ccfbe. 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/CA5KR2010130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78399ea42986c5b2fc199f8f5f69d0a3932339edc04bbf170688e17229049a08. 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/USUS12500155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818d1850bc80b0b1450715a534b99ace6fe905abc30361c3101c12bff993de5d. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBRKQ2410515.