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 0x6ae25f28655c996c38ad3470c89e56e97650cda5d4828afe7ff0da39cfa79c11. 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/e5cc22a7-88f9-43e8-ad88-57f96fb99605.json and https://artists.proofprofile.net/proofs/artist/e5cc22a7-88f9-43e8-ad88-57f96fb99605.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 0x851d3bcc05d0a2892deb7229c1ebd5af406dd19d2815594fc06f4b8001faff09. 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/USUYG1483963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0d812f88966e7d9421d116258e6b43d5f6f56f7d3bbe704b883f8f10e04563. 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/TCAGP2243597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f853cf8f57c03dfb132f6ecd8ff8059863ce9b9f2e70952bd6bbbfbb31e55c. 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/USUYG1501606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399669935eae7f80827913d2b499036a409b847ce78dca54280f03eef5b4b0d9. 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/USUYG1507940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3937e3075a0c7f99b18ca69f3a26575da532b2a7367c2f30f6de354de09f66e. 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/USUYG1507944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8435aea8cea93ce2046ff99c006806a4254edd10ca4a6bddb13021877cdd31d. 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/USTME1950244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110689849afdb8e7a71ecdc22009e4878375761da71cb0db4526b6e4acbf338d. 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/USTME1950245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd48eb3e9026ade8eee6fbf963ab9733e2a86fab588bc11e8e1350baca50b8b. 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/USTME1950251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6cb4b82ba56e34a17242fa59ae4f32884bae4eefa530ab71c87b0a0b814cb4. 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/USTME1950252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e1db218b30ea319807fdd3042de2062aff14bb141160965875f1651b803e32. 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/USTME1950253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc509d2237c44c061b79e7446919e093cbd3a4c41a733b7bbcd70383a5838bd1. 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/USTME1950254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0ba1939b46adfbe0a12bb55b5483fd0267fc47a3e279661a6f052ae3db933e. 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/USTME1950255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9999a8f73385b28ed0f266175f5aebab915ca800a1b0593780459edafb482f51. 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/USTME1750056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7705b74795de42f372ee7c5ed3c891dce13547fc01e60493f34a8df2925b8f. 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/USTME1750059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fba5f37235f27ee4c7216b0221ede008da864306a5ed46506151248f89a5990. 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/USTME1750060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817ec6acbecba5d6530683c911683ef71bc18dd7a2bd36fde496d48d8ca46444. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USTME1750061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27baf6fc8c7d9e6d84158fb0be6b8a55fe08e0f3ff89022442923e195ca663a4. 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/USTME1750062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf49b3c13e91caf888e9432febf9d6b8b51e0ae4355875b03eda6f9862a83e44. 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/USTME1750064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e510f2ad8ec4d274aaf4c53dd480201e5ee1206e1810afb3a22f5073d22ffb. 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/USTME1750065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d270d2f441f0015d849f0565f8015801f1529f7762a45fe3fa2fa5c9e4fc1ec. 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/USTME1750066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd420a5412f544f211463eff5872dd5b8a467996e9b4e025ded4b76af1274d62d. 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/QMP7E1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d69c43bbfa2ce24e5dace9629d7cf97c91c6ed509386be0a9195752acc479c. 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/QMP7E1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd887dae04162327dc815611e252ec9bad83665823f24acdfa720317b4ffc34. 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/QMP7E1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d23b1230efe9617084f5f3b0fa4c5fbbd07c53f43cd0047f4119804fca7da73. 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/QMP7E1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5113d92e74694ce27c69bd1eba2b866af9d07fabaedadfbaf57253d84caeb21. 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/QMP7E1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ab63ef305061cb32d97f07763d106fcdd7f84587d354b3ffcbf06b6c789357. 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/QMP7E1400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354c08aaea5923c2b0d9d741c61826479392e6adddccafe13a2859e7cf20be48. 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/QMP7E1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4cf79062e5c3357113d5f77fee18c60ea37032c1a838ddb64732d5925e91b7. 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/QMP7E1400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0d812f88966e7d9421d116258e6b43d5f6f56f7d3bbe704b883f8f10e04563. 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/TCAGP2243597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc844036532556198938890af5c841886fb474ef06d62bbb329483c6d01e9235. 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/USTME2000255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4342e999c9b6e166fba35676746b0cc2337fce9c435da9318a93220f8388d837. 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/TCAEO1907430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0717a568bb4b1c87e29bb51ae8603fc0cf469aa38d1c8486be165554f657da7b. 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/QM3AY1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24296ca4d05bc22d59ee861265ab149fbb5e50ccaea5149c444a1163018507a0. 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/QM3AY1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1ada439f1f5dafe78a7bd738c48545da82dd20945882f6686a88f7ddf17105. 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/QMP7E1400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba6f046ffc1a68e4ff35b406e4f907f1c8d7feb1d89dfcf1a25f6cd5aacbf23. 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/QMP7E1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1e90afac0a1f438a81993c7400401afadf5b568f720660adf8bbc69956eeec. 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/QMP7E1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3136a16e4e26f9bf3100bed79671e09c45f07b41b6b5e0a165b28cdea16eca0c. 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/QMP7E1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb458846ed0588953f19008114a179a4320a739ee9264aa91485fea737c11abe3. 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/QMP7E1200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42b03ac1c4cc0a9045c92ab4ca8ae8db5b94938cbabbd972f77ef2765560e0a. 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/QMP7E1200005.