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 0xc536cc87d824b414785cdef5a1fa7b22fa4a5cb0204a72e5c4afab8a3a28aeee. 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/41312958-3789-4770-b779-982413e1f85c.json and https://artists.proofprofile.net/proofs/artist/41312958-3789-4770-b779-982413e1f85c.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 0x2ed0ae44904dc639a763770fcfe4705b8f41e4f17a1dbc1cc5d1ebab088a66b7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:21:44Z), 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/FRX201952247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b00c02388501959b664c47edb8cc0c627abbb6245b73c5966d129017f4ac3f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR96X2028190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f037bd11988dad4b15c98acfecaecb957b4d03d56a4719696483e48596bc1c4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:46:48Z), 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/FRX872006762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f17731ad534d43dfc7435daf3d1be33473fd8a794f5f9476b5659b8d0fbe826. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FRX872183161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273c3cf1157d55447277ca7f69d585f7d29511c6dc80ca19647ce4c200bfbd8a. 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/FR10S2242551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec79e9369e081d5e5753aa24524f7abaee09dd8bb541f6115127a4353d1b7a79. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRX202229408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d4a6713487431f78aa9454e18c5495e6ae148fe052e9e895075af9233c8fc2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX282212381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28da01483fcdf116bf69a120079f37f372ee44cdaafea274aee680df6a26133. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX872338474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f037bd11988dad4b15c98acfecaecb957b4d03d56a4719696483e48596bc1c4. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:23:50Z), 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/FRX872006762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea8336588e64b7886de80b17ab9584557135a80b814bf2eb56858d13d6a3650. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:08:47Z), 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/GRPA12000319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b00c02388501959b664c47edb8cc0c627abbb6245b73c5966d129017f4ac3f. 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/FR96X2028190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13a928595d12e445312752dd15dd352a80e9220f3e79536fff9e26deffe00ba. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/FRX762364036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659d8c279e2ebdf530a0d008ef33ccf7fee6da9aab6e82c3f4048a9df800df86. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:53:51Z), 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/DGA052374841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d59e4ea0da755a12325f93c73e25a411cb3afad9f0a1f364929d0cfb1af1167. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:50:55Z), 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/FRX452323140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fe6886560a5222bdd75429099cdda1dad8d4926c6052f06093400a6d5aeb18. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:31:36Z), 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/FR10S2480621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada099fa105d15d1ae3b2b26362d5e323f893f7bc08b84e8136e2cd80eaf14f6. 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/FRX872433571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bfe8f72133d28e7247d8336ca57f5109dec1950ee6aa999f147a68873a55cf. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DGA072471141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409a7a0bc451d8352f8294b0d2611149302e1340e5fcc49d04ca91f16b0587b1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA0S2416271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299f682e5ed4f773bd7f1db979672b3b90b9ba6bf8128d48631cb478f5d72d21. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/GRDMM2501252.