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 0x94fd6ffb58fd89c00f2ef88361d247b3e9c3224e4cf7758669dceff1a7dd0361. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6692a970-d83f-4a66-bec5-c4ab7daa0e20.json and https://artists.proofprofile.net/proofs/artist/6692a970-d83f-4a66-bec5-c4ab7daa0e20.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 0xacb3d41777d957733d44b5bfc846e535e0c13b22bbfb0a248b77eed571e1688a. 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/PL89B2000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0d6e0bb827d3ee845c97636b7f892b847920b830d5cc38579f0a8c46cc1ce4. 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/PL89B2000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae96e0ae083463ebfbe6d92b01b913919cc623971a436fa302a106ab702e3e8. 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/PL89B2000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6c033a2c9b66a0e9445db1dc3779832b2ecff7902cfde38d1803750d761001. 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/PL89B2000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dacb87e6a42c0a4e743330b5eb75a210acb1b126d399b1bb02b9bcec5c4c7b. 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/PL89B2000206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2216d368287c60d60f79c51108f34b292def9899784d984733c0225a3020c2d0. 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/PL89B2000207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1412218bd5347e00a1ab4928a6a0b6f697f513523319cfa9e386f05a264a622. 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/PL89B2000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91dbd45216d5d5f358d508174bbc45e559db4d78b56fdee90b24172073438b1. 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/PL89B2000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563280be945cdc4729746ea6a0e59610788fe50d4b593f1dfbb49695ff7e9d74. 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/PL89B2000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768ada8f3321265546642ac0f7b17e46d3ec4d5581ddcfc423ce6c42f22d674f. 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/PL89B2000211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99809a3f0e866f711ff85d68c378d59941aa55fb9bf6b8792bcef927a8cc9b09. 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/PL89B2000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82e1ec41c6a8209fca789bbaa123e739d2787cfb880bb51e89d70b90a22335c. 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/PLC062433578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc443f354b8855341bddbb6455be8b0dd8cf0d12334545a3b0a6722429889b9d. 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/PLC062424202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1abb6c347842cc278558c0f504ea62efaa5889b4996c3893f870094aeef9fab. 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/PLC062366258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d5219cfd2ff4abef5b450b4302a6809a9435d8131541b50a85adfe1426fee9. 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/PLC062361736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72443b0248d377a39b98673c4b81771ffb3bf51b07bcdafa0a96b6076c8cdedd. 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/PLC062229735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708ace681247e684cce006ada8c1830719691202d8c72618825febd0c49ff3b8. 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/PL89B2000325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3738b9bc950df3ddba9c330b345775e7038aafa2bd908b64ef517633ded0c3f3. 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/PLC062121343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ad6bbf0b3ab26f54708ea01611e77104cb438f0782938f1edae9da3d7a597d. 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/PL89B2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91dbd45216d5d5f358d508174bbc45e559db4d78b56fdee90b24172073438b1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/PL89B2000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07b534dcd2fb697b8cca83801a06e69f9e4e3a2ffe7ad2d4e5ecf05a4077b74. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PL89B2000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3def79e0211f23aa3689b755e71980b7505a44ae6189f94ba7d9eecf0ba9f5f. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/PL89B2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e2cf38a423d9bda1c17a10e479bbd1e1b2cb206c170f18d467cdf3e61a6f28. 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/PL89B2000228.