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 0x9ac04e7c803b31fab6e62a9dbe4727e05b14397ba48198f8e7dbb7306ee5dc67. 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/1309e297-3b15-4881-9b20-c5ba65429c3f.json and https://artists.proofprofile.net/proofs/artist/1309e297-3b15-4881-9b20-c5ba65429c3f.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 0x566e822b547f6bf9b7c3614529287d82da80767738a07315c4fe86a6a35384fc. 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/JPB672404537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d93c873d613ff316ae2b761fa05902c9db68e6dbefc1a91d2ad1304e562306f. 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/JPB672404538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7950cf373f65c197819ccbbba49cc07f5989144c735a6d515c09945422f37a19. 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/JPB672404539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10101519db414d9f0efb142adaa3d313cf74fb00a585288fc831780260fb268. 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/JPB672404540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f831f0027a7ade65f160c38840e85c57ccf3a997db7414aacf60b83e0eaaf9. 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/JPB672004021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b161f2a4aa3afa35c91089c21d86ab8f285e3acb46164989c74eabd889b7fb4. 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/JPB672404541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0ad1b05dafd3da787f9b51d23af0c396c7033056088a0013199b0e84150c35. 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/JPB672404542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acd8d43e67f07448a0a382af14f2bc70520865bdca1df82415283d602182cdb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPB672404543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18b5d6fa111cf8b413b33658cb1ed20b471376677fe2ca108eb2f084da08ab1. 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/JPB672404544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70023be8a45b63b187638f89e2574e3c87abf7469af565cc16ab0af7ebef345. 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/JPB672404545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f831f0027a7ade65f160c38840e85c57ccf3a997db7414aacf60b83e0eaaf9. 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/JPB672004021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd85dfa4f980c7b209c20fbd442045146e94edcbc4e53c627d525d80632ab50f. 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/JPS801600322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf861fa4c8b4b538eac734c21575eadef1162fb1cfee945511aa454931d1edd69. 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/JPS801600323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0298ef417fd7bb807d739da60a05b5cf1fb91ad82e9a4abc1859894bc0f3f4e. 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/JPS801600324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5381be14a266cf2a112d8fcefdb67b366d4e7364d2011fccdd9c1856e6b5b5. 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/JPS801600325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c92d93f64e1750ecaf59a7417ecdbb914d79ff7ec2b9b9da98ec99f32872996. 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/JPS801600326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd732f84182c1868e330c7736389767ad45361ef2da60968a29878338f0ce5814. 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/JPS801600317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f524cd43b51a1abe6286ced342250479a8dda25c64a192a28784498a5e3d09. 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/JPS801600318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203c90cb5b5bd29cd5796b598f328be77660030798761d411648d4de9ffed701. 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/JPS801600319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdd938cc19d3277bb7bbc2790acef742f1b7d8b2ad827a36320a01fe5cd3dbb. 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/JPS801600320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7995874ed4ff9f21c7c46d0a83f803da7e11e53c7402dcfdb1bc99ee71e1b12. 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/JPS801600321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1868b39f94f4533cd95f192bced6ce1145857bb9350a1044a7f32d89054cf4ae. 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/JPB672404598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc36d30df7ffcc741e86731db416dae61432cb825b84c8b2dda5c4628fe8768. 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/JPB672404597.