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 0x2df0fc2176a5e18ffef64fb3dfd5919ddb098b65e7cd0846a6a5bc2ccb619f89. 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/8db32f66-2c00-4ca3-9ba3-a83635be35bc.json and https://artists.proofprofile.net/proofs/artist/8db32f66-2c00-4ca3-9ba3-a83635be35bc.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 0x4513d14a2c9f4dcd3ced9d99b98a7fd380fc48396c41a6b59b38e736445a62d3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM6MZ2065184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7756890ed8c99d4e73c272a7e91398564be2d1f34dce80b4341b755ee321fb6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM6MZ2065186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1849dcea1d6a0fe562c12f074febdac4cba9bf053c877ae4419a09d527a7e0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QM6MZ2065189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2275824d8d5f8120db325bb730ea5b0e52a903b95c5382a819c92b3d89c6cb6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFME2027798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c017f43756293a17fdb6f70c0eb2f928572f571c24fe335d64e040efea1a59. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/ES71G2122814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ce0eba0f85a82e9009dbfa4f465080b3768cc07e830714e835a7a71a9ded4e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ES71G2142204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4df7f12c026d5061194c2ce6a3dda388669dda3a48b52b6f9d8ea6a1df44c7c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:31:34Z), 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/ES71G2242029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb29c931c1c1f76002815f163324a3d09bbd34c6db5f7324aadb2c42825631b. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:54:56Z), 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/ES71G2242030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a4ca9b6f128bcc42eeddfbc91745266996bb31025f0a02418c865fe5ce3126. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:05:46Z), 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/ES71G2242032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd9cdccbeb78a326e74c79be9cc58d6a7acd72a9e0097ee1bbaf8991ed77fdb. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/ES71G2242031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9510c48fb85e536bd6459e89a98a4f2eb5286bbca935942faa11f9515a67c7. 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/ES71G2242033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b9cac68858c96851ad8b615d1bd41a6f36a65f5d2c37bd61a57f62e33676ae. 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/ES71G2242040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf9708428a23f62fd6367c1d147f8a1b599fafc1de465b69baea405a6e1bfcd. 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/ES71G2242049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274020476029e1929bc85fba02d434288550f074f14c447f5eb9ad120e87108a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ES71G2242051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e7e5752275b9dfa441a45acb2c74bfc099da160e097c792e342421f9e7dd31. 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/ES71G2332208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da420c8d841e508eeb16c3a0eddfd3dc0bae2e27ff82e44728b09406da07451. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES71G2332205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f725f7665cd7dc2896fca0cd032f1d8a46fe65625577a71de8d17205e6eb8e9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ES71G2332206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98e0b1ba563c52f352a3e72954291b406d6b27eae3e10e21bbe8c6f05486425. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES71G2332210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd966ea42796e8561f11574aa8b0aefdf53c33ce037fe6433bf623fd93b0adf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES71G2332212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d16f5955f741727b58a00ca20e3cada21450dcccd81a9492a0db9017da42a8. 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/ES71G2332213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da420c8d841e508eeb16c3a0eddfd3dc0bae2e27ff82e44728b09406da07451. 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/ES71G2332205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f725f7665cd7dc2896fca0cd032f1d8a46fe65625577a71de8d17205e6eb8e9. 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/ES71G2332206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7840e345a80be1c8778d625ebe75d1580392d227626aaea5175c07393b2bfc25. 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/ES71G2332207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e7e5752275b9dfa441a45acb2c74bfc099da160e097c792e342421f9e7dd31. 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/ES71G2332208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9115e40a20cbb7b9efd4d9dd0745e227bc3ce2e4fc8e3ba28ad54f831113f30e. 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/ES71G2332209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98e0b1ba563c52f352a3e72954291b406d6b27eae3e10e21bbe8c6f05486425. 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/ES71G2332210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6166eb689eb00f4bbd4c26a5f6688b0f90d9a00bcb39489cea8653583edc416f. 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/ES71G2332211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd966ea42796e8561f11574aa8b0aefdf53c33ce037fe6433bf623fd93b0adf. 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/ES71G2332212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d16f5955f741727b58a00ca20e3cada21450dcccd81a9492a0db9017da42a8. 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/ES71G2332213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6f53546fb56b8a10a402a376d3fc6624d268b40402de47b2d55b54bddad5d7. 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/ES71G2328321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc3b788a9aeead39c416426c0c6d4f188b13df8b8ec7ba0dfe14291c9f6a12a. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ESA012571888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc349a5f54b61fb735a585c9ba516feabc8c78b84cd45eb5fe23a0be0e176bfc. 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/ES68F2400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd0ed6c6aad63d6ad27d2a988e48b4e4d76410266b01f9f8fa0e1ec0eec20bd. 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/ESA012557378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050d5f6fe2f69e6c71a8b6070471c7c5af6affccc4aeec11c1b033744ca9712b. 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/ESA012557358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8030eb2701782a4a230fbf9d4e6e26e82b611ad018202dc73878805a035d7369. 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/ESA012557366.