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 0x7993a4946e55ba0b70fe95bb7050e29d459681419dcecc5e78ea5608572fba89. 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/9fd1a72d-ad65-4e41-a834-c54c78664622.json and https://artists.proofprofile.net/proofs/artist/9fd1a72d-ad65-4e41-a834-c54c78664622.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 0x6b8d47135a0afd2792da16333eeaff1972241630c0aecff657025edb70e7cca2. 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/TCAHG2378319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b85705d6dd6220e2a7f9006eef819abe60637a1e71eea56ee90a20761820ab. 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/TCAHG2378336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245269ec2d963aae3e9dfd3b1c6b786edde95cad15c1779b100f7e8055037dbb. 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/TCAHG2378344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f336a470607f7b74908ed1490df3d85abd06f304da508dc70d841b2f0e6ec20. 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/TCAHG2378353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f4d107bb8827489f96be8f49ff37c1a8addc55fc11a9fa9df53fa5bfd697a7. 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/TCAHG2378359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96b428b73937bb984d931e15228e3f10c258645942f9386c7d6f9a7d90e3fa3. 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/TCAHG2378362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacdbb9c43734e03f1685bdcbcafcfe79382630e40c87b8eed119035f02fef34. 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/TCAHG2378386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2661cdb6f91ea07f1fcc11d594261af406cf9d23c29630fa1291e18047e018b. 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/TCAHU2407471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3aed57730991663501a08b178f2622d7fc2dcc30d67650f57488b449690a43. 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/TCAJJ2519638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215c915917dadb0ae123f50c52c253825a47b7401a4cdce0d8c7ddcb8b1d8047. 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/TCAFM2161924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7e4a6046be936c9cc3140edb9ef17433fcfaf6833520a20447ced54c1bd67c. 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/TCAFM2161935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d59e677bd62800747253987df9e22b3be0a5b9f13cbe2a5e72056e9bfc272ac. 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/TCAFM2161942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cea342d5912b1da30d665d39eb60eecea2f0111994016cf5ca2349cf577e3f. 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/TCAFM2161948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a8024f479e07f9162dc9abd9f2a417b3e3e15c61936b8b3fa25f41012f9ebe. 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/TCAFM2161954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d8924ebf1997ea61e007a0793a4a36ed7257a1e5f903f3d510330cff734d90. 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/TCAFM2161967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6d957365eae4a15baa438a488947646e148b521e30119562d9ceb33fbdb325. 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/TCADT1879521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492bc2ebb149ddf52e032249444d22f5b8f3bf123222f3745e2fdbfb04ca72fa. 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/QZHN92286840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86d66b5969bf53373fb6db93530565e7c5be8b159ffa5f88a54854773e7ff02. 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/QZNWS2247707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b868290d0a89e9d8e8e205112c4b5cdc4ff19ff81e022b4fb0f8c6053f4bd9b. 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/QZTB52294450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe92582294d94eb7b93831b335f4c5af6b9c673fbe9528a5fcd66887213d361. 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/QZTB52294451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9bcca52f95307014275e5c8eb4b712b898bde00ddbb311cabb0b2b0d328f22. 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/USUYG1273563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0658e12275de65a667317fdd86b3e36f83bcff93c75497350a9398b04232ba4d. 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/QZTB52294453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae1e446c33075688062fb934cf958a71c9320405ccca21ceaaf2eae08f1da63. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZTB52294455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35633890a3a3e4d572c77a1ee2c4198bd1121c65fdec5583033eacb71b35207. 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/QZHN72143765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109d208c5db15dc3bc82547a7eb13d38ae8e94e34a04fb0230582cc53041a852. 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/QZHNA2175366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa582dffad2d430f58937d06ce72edd04415f064c25173ba07f2e83ef68fc65fd. 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/QZHN82000675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676037f17b456aa223a6476d23c3c371552939e6f2b8f9a22c7da3c09b1060f5. 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/QM42K1876803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b27fedca07326d7986a1aa1e150a39549af441044a03f5de54778a2a39dcd6. 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/QZK6L2325285.