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 0xfd6606cdddb36b99cf05e77d98335281bc349413ec99da42c33b8a07e9ea95b1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9aa632a5-4aed-4e1d-a8fb-d545a774fd7a.json and https://artists.proofprofile.net/proofs/artist/9aa632a5-4aed-4e1d-a8fb-d545a774fd7a.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 0x58aa8e206be6467e738c754a663c41b0eff06cfd4005f37b982112c112f1e6b4. 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/QZAKB2407518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761fc1bbc8dd4f479e1bc252fecc1799fd5b125f755510574622f35c594d21c8. 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/QZAKB2402272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc612931e70527137e49b37262c3ff747d3314a3d559ae4433696b11c26957e. 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/QZAKB2383639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd2b45d1104792c2316310c771953d9d9b55b53d0b0d4edd284ed5655567a45. 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/QZAKB2374320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867fbdb6349549f3163ecbcfb43bb050a5e6e5220bc27c6f13ee4f3f176409c7. 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/QZAKB2369604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4744eb6ffe9c1ac44fb181ca82e93b35408d1d884d84b4420be2c1d8c09c0431. 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/GX7852300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffc1bc299ad813fb2914be83338f618cd8f79ec748cb62e0241a4bd75396d0a. 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/GX7852200857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df09949c0c2c7b58319cb26628a09c469df9870f582fe861cb529e0a8d56aa5. 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/GX7852200476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef91a463a1bf1eab777f80f7e24ec1d95eac86c1fd5d9e6aaec210fa659e5a4. 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/GX7852200424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cd68ee40c00160cfcd63a8b1f2b27567403c4747c9642e2d0e84a3c1593147. 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/GX7852200253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825ed10d0f65be5ce6ad2dcd7b19dcc152a6cf03bcd48b357ef0b421042858f0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GX7852200214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47391e76c67fb83cdad0e4ff9f16ad7cb508001370dae0a1f5f39a08875ccd6. 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/GX7852200181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1300f6d1934e6b309baa8ffdd8fe7806923136db862ec3de49dad7f54726e73. 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/GX7852200159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad6ae6c7f2f19e8f91912ea70e7a4e0314dd81a9bc0d143bc22d9f3db66f863. 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/GX7852200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936769b2cdb33eef0ff424bae06e64277920f8f8de3ddc98977112444276146a. 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/GX7852200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7da084daf46bb56e1291cf83ddf75852dffd32d8493a7b97419fe304fde37d4. 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/GX7852200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5c4a32b622c8848dd4aa3dcaac9ed036c8e3ca1bef56902fd373a423d9cfa1. 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/ALA092100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02457c2fe6601a8929016e32a6dec11cf83188bd572921312da0fd5ad36ad3aa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ALA092100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fed3389688f85bc710d1809d516129dfc216871f9f0beefb99a778dcd2ca63. 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/ALA092100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad799245f4d5ff4d281cbf7476495978c56dc92daa38a640117e239936991177. 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/ALA092100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7db46ff39e87ae8726a7e6e2f0f7fcfc9732b32abf4ad8a7e064186c726012b. 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/ALA092100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddb98ca13768555ab188ff48e9ebf07b597b8c705688ef553b5db77d99915ad. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ALA092000228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f344425fe9b971a7e78fda3adce4dc86c91e4bc8a957f801aab32454f37bfe0. 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/ALA092000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca2fc332a68c1071a599929d2406ad319ce9b667a528aa81aceca7a76a53a93. 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/ALA092000175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10958900d288cb048b05b17ca0d883340c81c7678b98dedb9d76bfe81f6acf7e. 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/ALA092000159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919e1deaa9a4fe97a9bc12d7c8b472caf83cd5ce74c53c74b3e604e6a49b7cee. 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/ALA092000148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0eeb528d514ee7ce5922dc82da43d8e037a5fcf11a996b2eede31c8587f5636. 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/ALA092000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7016afd6805d72bee39bf6aa5a5c5e825fc69ec5410583418e4e4fb0fbff786. 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/ALA092000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9538a81dd7254da74520b58f5f9194943d9b38f04a9bd2dbb41ee463e311826f. 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/ALA092000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21c065abd0892d8f9b2bbc270defc3844dd000e44d4401a5a21ea20035d3514. 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/ALA092000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68c26946131e5f755001d08b187c8b1c4f501f7747eb039e7762c970dce9bc2. 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/ALA091900253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23703e2bbae7887247289969080772abbb12d8c7f7ddcb63b701b5c5f9e5adb. 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/ALA091900191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe776654957ddc937ba7082e71328f7100b8f7dc178878f270e3d4166b5b260df. 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/ALA091900179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0f97ce28eae463b624a9a2a001aa3986e1281140b226855211959db8ccacb1. 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/ALA091900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9b4c6b7abbcb997b3b8a756087e6962672e23722a9e628a8022c0e064e649e. 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/QZFYY2093654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5501f1ebf408df32ee12f305a987180030d9a9ce8c19a9cd8771cd5b45fc9c. 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/ALA091900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4997c268542843398467810eb8007607126755a22d4fb5ae1ecd022c9303a23. 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/ALA091800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370b63e3b106987b916c8a5aa22e46de3aafdc7ba98a3b3e97d06ff00e793e11. 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/ALA091800067.