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 0x0e2aa19834a96e81792d3d85df41af5556861cf9dcf2462bdd1cc09e47b3dee0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d95e3b62-2b08-4675-8f23-4505f227a164.json and https://artists.proofprofile.net/proofs/artist/d95e3b62-2b08-4675-8f23-4505f227a164.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 0x027678874d33bb06a5cf356fe812a4cc504e17c81209ff2cf70a86b6ab6e91c5. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:01:43Z), 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/TCAEO1980096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ee39fd054323e5e6ef6cbfa437b91e7415561c410dce71dd97e949d9212bad. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:56:10Z), 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/TCAES2068988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488c6cbac0e6817de28feda572fd94350dfc80a2c23a9060c400cb6e0c4c4f5c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAEW2077882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243e67e0be4a7f554bb1ecee76e9af4703171fb3c31d6edc5b8399ca62931b9d. 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/TCAEW2077893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf333daf403735c7287e15505c3f1e9100dbc6f916eeb5de9cd2ac8f84151e548. 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/TCAEW2077935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e5e2c0888fd85610ea51bb1ab7610212a990aaf7420f4c6b503afe11e47242. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAEW2077940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bf6357e2579e9d601d2bcb613729ca1ec776e5ddc5c08a4af67a205e979254. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAEW2077962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f6a572edef2e857676d12550fefeaa0a74c1257acef8df3bc3f907747a9825. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA052063703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d473ddfcbb39047e25f5d57a6b865655d4c9c7f93bf2d46b05d2a792dcf1ce9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR10S2170441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3088abaf91c9869360c1c44dbd7373344eb40f0d65598ad8cebd5a0cb5325e6d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DGA072139613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363397d327deae62bb1190f786d91642db552e483f9ee4a2643b25286f3122c3. 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/FR96X2135746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd2a1e0727be1a35cfde63bb00f6e69eb5326b40d63b70cfbb881cf9f7d5a04. 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/FR96X2135747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfd90e6a767e8b472f7d3cf1846a35c9f33caf02595e9bca4156ba71d5d4998. 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/FR96X2135748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e200e68d85bfd69b1b7ddd6688a78add1287c30245d4d99c62958a5e99515b. 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/FR96X2135749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78f1e2b8c1665b17aa9b5851c182aa764be06b1d26addb78dfa99e803a834df. 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/FR96X2135750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547c620f9d539212b35b596c77690a2b9209c774c9fdafe84f78079daeed2f48. 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/FR96X2135751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd54c07e343395c912f09b8af66160105453b0d4c687f5f3854cb8af86db224. 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/FR96X2135752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c0ce9db3d5479c7ba871644841c8a2bd07aa5ba5d9b80291cd30333f52a785. 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/FR96X2135753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0451eea7a89324ca838f8168727235ce20d869b8e94ba3b08c13f8cbcc0bb5fc. 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/FR96X2135754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f23f9d8600805250b50732b7672c2bc276c32203c911291bc7ffdda91f74d8e. 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/FR96X2135755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290003a7ff0798416ba1e7c6e2ddb210f345fc31137d920199e38960edae35f1. 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/FR96X2135756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6720a4744918300657b5824981adf22af9c394109f9aafe9f7d8886e434045c0. 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/FR96X2135757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e31da3be5123b2b4a26a7025de864c52f79c813a1769b63f8ec80f92252fff. 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/FR96X2135758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a5ddaaa85f7176cd5b3c391b3f9276ffc3226d16c446d4e7c126ae2ca7bd94. 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/FR96X2135759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f70cfeb3f4959300099b3f0efba93aa02f40beb91d22458fe991125181d09c6. 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/DGA072157054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb62b0677410adc46835a1796f7abb286e9d06a337f2a35c2ea318fafd2d7aba. 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/TCAEQ2052462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6410599531d0bfe7a05b3e0f6c0b28eb0e2cb634ce2487afaeb1b6e464d39bd9. 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/FR59R2294815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc685a6a5eefb27ccdfa4e824dd51c974aefa3de5366b239a0459a9b5f681b17. 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/FR59R2281823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e1c718233eb08c4b8be8658565d0f7adbe8e2970419aae0f9b7c6eb5b4f700. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR96X2239397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3a03f66137092008c236bb0ce81d7cda2e563e060ec1f2498df42dd07db937. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR96X2239403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367c50c7566e65e3108e3167c0f83739488bff50358a42efa0b38b44b8ffe724. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:09:46Z), 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/FR96X2239407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa834f8ae2b52e7c63cfcd1aa2c3d467630cd01ac00feca6129c7028344f7d50c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/DGA052231697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173799cd055bc44f8db0464817ef6244980412854f8999d4fdcfde92e5e26ed6. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:40:50Z), 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/FR10S2378857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd88bfd86b43c7f6b5900f956b2e8f3d2eb4edb34b05a5a53617766a4b7a3fb. 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/FRX452357067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78495185a5ed8785b846c301bb9820f0a87e11d4794b23b4d38b71f0efd14c96. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:01:44Z), 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/FRX762382652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f865870302aa39d0814bc2ef26ac7c072426663bdfabc7f5680f41e46ec47c8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX762382654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd41d68b760c1d714b3dd0d4f4990a74265f7a1922be23ffbad3d5379102ba21. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:45Z), 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/FRX762382656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e9f7a00148ce1ddcae289938dbea3863b17edc536080b720d47437011914c1. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FRX762382657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9df943cc49c690f3c921aecc0141b8ced9b4e3c8206df913ad6860df7934922. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX762382659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3f20623f27f772c9d27b43cef9e0e4df8af7dd9c9323749207584a6be0f8bb. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:46:36Z), 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/FRX762382660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bde5df948f3c86c592715830da62d6137bc10a1b4b1ae7a8a4d58f8be0c55d1. 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/FRIDO2010619.