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 0x9ea8e51ecc1e929d7b13d284c8112bbbe8722308607bd57e64adc448b92ade6c. 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/7c61f337-fe2d-4a4e-b4b7-4f38f1fea7a9.json and https://artists.proofprofile.net/proofs/artist/7c61f337-fe2d-4a4e-b4b7-4f38f1fea7a9.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 0xe6d5fb3dcccc4a3e2bd7453a7c5a9c0c43039226fe5359b4367e34bfcb2cc443. 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/GBBGL0101370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6c0d73835beb6e0a9faae654dcc719eaf7d7319a5f881557f2cd5ec59abf8a. 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/GBBGL0903147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977474aadd2bc6ab33ba53a5bf94972dcb2111e9846b7eda285ab1f87b5e7292. 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/GBBGL1100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bab7cae3ee3fc957048bd1c8285f41eb25155838f310a90498ad9fdf64d4ad2. 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/GBBGL1100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe479267c78de6d1d235b5b44ebd280584bc4373b5ce42e95fd8fb60e144f48cd. 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/GBBGL1100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949062e3c5bc0648953596b528019796411489e25ddefb957598961782e5894c. 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/GBBGL1100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46d965f7ba210846c672ba5b5046665a27c2fc3202f3e7ea51a99c69cb0970f. 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/GBBGL1100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859d89f42ce0371e41de5ad0027111bfe2d6c5d1e996962f4b3aec66286d61af. 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/GBBGL1100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b624f30bc49073b50d00e641944663df608f9806ff7a2b6fb5e054331bfebdb. 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/GBBGL1100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a230bf6d027b858104c12e5ba9537f21de40fc617791505564f142392035129. 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/GBBGL1100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ac09d35aee08ac8aad45dadda1e1075d892b920b9f9370d502b7b8462ee4de. 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/GBBGL1100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5519d7c3e2dc7c9a40db93710a3c443a8b864ae6a94fbe712355301068919bad. 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/GBBGL1100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44d7cd131ef2dfe1246934ea7f714152f7555c3960974ff77e5c0415b4fddf2. 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/GBBGL1100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3a1756490c67e587dd394f43cbb1deb779bbc0ab8fe1d2f9873f629cbf3c85. 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/GBBGL1100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19234117a589be1379051614f248c29ba4b0e06563811c883ee7ab5c33427398. 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/GBBGL1100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526d740677bc4cc4e6543b4e8995b3d059f52957cf429e5b91674e872201029c. 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/GBBGL1100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860413ea8d09815d70b17c8554968d8bd6cc3eaa4340587551c50ba4059dff3e. 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/GBBGL1100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8c993809b3d7a46909e78ee9d2e53cec213e054e4b4a442595d382fa622cfe. 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/GBBGL1100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4448744792564f08798d8824c2baf860f2efa81609aea267d1220772c2bccec0. 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/GBBGL1100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd270db757f78d7886b554cc900ad56a105008375598aaad4a7dc526a2613e7db. 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/GBBGL1100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58ae55daf1dce2dd654d739ed07bd7da5eb638fc522b2205acf0409b172cd27. 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/GBBGL1100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea893995c63366925f11482a27970ee74e9371fe8b3a57de88682fe53368377. 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/GBBGL1202687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e3f30e017c33eb7d1eca6f4c8230dc1f94c84aebb391ba93809d5f8e6b3113. 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/GBE3A1711205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160ff0aac087daae0572af650d1c1cb3c0babfcb693a799a89979f979ae92bd9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:46:59Z), 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/GBE3A2328101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccd0bff4d5a645e97ad5730794fbcf92b345729fe393dedf451092b3585b505. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:56:28Z), 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/GBE3A2328102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc2d5f2a5bc752068cb11f9a00a54cda7fcadb5756e886f7eb2b49c6592bef7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBE3A2328104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cea0cfec13face5d70e122c5918c44b84608db6fe26d50b8e25ffaaf72018ad. 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/GBE3A2328106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00469bbda58e21b5eaa6a9a0d8200a66891bc9df1951d5d9180c0ced7227ddfc. 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/GBE3A2328107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acef66cdbd018bcc5a72d3c3dc2f3c0895c6f414a5118a351bbe49de6493c02. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:49:55Z), 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/GBE3A2328108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf45a0d60e2e10bc8c6da61f96114bc17bebdb4bc936776ad7c9ba809970397e. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GBE3A2328109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022852e4f6ecda9e6e90fb3f06e5f8368713e1465188f310da8e09e20020fa56. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/GBE3A2328110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ab70993fd704f92fb0f22303b0ddcd0524afecf8fa16297e37d59648d11aa3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBE3A2328114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c0a93d7c377e15fcb81645b9c8adb81f03619edeb86526ec6d9f4303450f1f. 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/GBE3A2328115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f07ace44ee0960bb8165d7a2ff799d75e643e9bde8e41e95a9e16cc62af58c1. 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/DEB632404783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa352ea798558f76c0f28f7a8a03660659717a513de5fa3897fb9aa378c584311. 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/GBS8U1250114.