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 0xf85269106563c9f247b1fd04255b0c16aca42a4782ccbeac2e347133485e5848. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8a2addc-684d-4bf5-bbd2-c7e29e32612d.json and https://artists.proofprofile.net/proofs/artist/a8a2addc-684d-4bf5-bbd2-c7e29e32612d.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 0xfd4c454b18d5b0e6fdde8bb1781bf79f21dca9d33e6dd98e29ab952dc540613e. 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/DGA062046757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a6dff7c8abe8ce91a47801defdcd7b37ec76b0bf7a010241eb66fd7870bf08. 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/IDA881900246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f6998cc1ee66fa88b75983540aad8e24d6becdfa7fd2b011ed4ebbb8e5d6fd. 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/IDA881900247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2eb8a99fcec51afe5a5d7687d08789e6092f36d57867905ca20c9cc41fdd77. 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/IDA881900249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712d129a7b89c1adf7addabe068fe8264af33106936919a21cf69c7e11344c90. 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/IDA881900251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef92d2c22e141801ff6b155d84eeea561f9eb5df3f343c5b9c462764a481561. 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/IDA881900268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe944ca4a8b42d7f7cc873bbb2bb7956ce8c58f582eb6fc6b7d0e6f797e5f486f. 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/IDA881900280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c56dc8000d286286f91a70a706c7a25564b0b4ccd0d86ec20009c611c5f5c1. 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/IDA881900291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e632eb701bea6aa8efb73d84d309f188bcbe2abc9d03d2297414bb58312db7. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/IDA881900264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1293577f11bcdf047755aca8e7c1ea1ce73fad4778ca7d8e49e5a19631308fb2. 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/FR9Z61900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4f8165d7ce2a56ff9a4eb73b65050acbbbc19061a905f69ee68debc1d7fc1a. 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/FR9Z62000222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d058d00a088a401f0496d10ed5c1221d10502d0361e8b9941ff8a65d44c4e6c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR9Z61900112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af271e515b57ea92c49d5d20c4dc319ea299e9fc788b9f9388375380cda371c. 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/FR9Z61900251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bf8179e1d1cc7a4cf35ccadd430fc7f3e62aeee0904b9a1af96dd863908277. 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/FR9Z61900220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc798ea4a937ace4af868439fbf2892f17f7e8b5ef998a6c824f6b1e49b95b138. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/FR9Z61900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8909c0654d77a6bc4d1e381acd2c5c0a009088e62ad3b3b0c64fa7aed422c19e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9Z61900135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2609842e58eb91f6cc59c21b851634441e31c58b9468f7b56756dc0ca8f46d6d. 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/FR9Z61900203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d65350f6669759c7c45c89244bfecb97c26decaaca1fa8da40b8fc7ec78051b. 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/FR9Z61900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71c67e2af96bcd6e48eebe5ec6efc575873a4ef3c552bb292f6ac68aa016382. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:10:01Z), 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/FR9Z61900224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675d2ee5a2d4700766c1e38a7e5b9fe530bde6980409e486b717f2dfbe02c2b7. 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/FR9Z61900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b3e8311f6fedf10d22ec7b5e438c55d78bb69b7a9406cf1d6e3ddf176debd2. 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/FR9Z61900067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1916f1a5cc014edcb56d869fd41afc5d69409c54b3ad1b7b9db2c6bf187e13c7. 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/NLS6R1881954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a029f6e04d3b3626ff88cf623da4970638ae05ec70159b7ad2e86f2371b38e3. 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/FR9Z61900192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf08375e63bf095ee49134c7acd698abd7a9470daf8f70d82cbb525974eac14a. 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/FR9Z61900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e605df7236cab050d164ab6272c9a58ad6c408f801436274a5d1c4b5a00ddbe. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR9Z61900069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859f51e7c440ce266570116fa087fbadf56057a95da951a6a8766a9ec4f479f3. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/IDA881900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c6da3e0db747011d3abf443f3a79ca61aa7d48f8a561e7836e290357e13ba8. 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/IDA881900215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365c915ecdb28d7daa24ef1b5a0786162bade76b6f2cc51ff8a6a163507ee105. 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/IDA881900243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55da7c27a2fdd79eb26aaaf7b059da63af47d61c0dfbc64c9c168d9aa5ac3877. 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/IDA881900513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0400d4dd71c8f8eab53b9c96e2a71761ac7bcbd78dedab62f18aa9e7d659c204. 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/IDA881900514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a17b4425ff4519a3e933048aad633f1d0c4982905efafa96f9f4fb3cd7ee3cc. 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/IDA881900521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4cba99faf101fea69b94a5e5052563f8ce5cf1dd0220cc9d233d493807192e. 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/IDA881900534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0a5cf85531bc8f059f9ffb6c71217126ac7ad79c710ae9bbb6129b92d90d21. 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/IDA881900535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7816f042c5cd833bed9d979efa67bd4d842f6b22f5540641ced7088bb6cff4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IDA881900540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa788f1198c2f9ea562d1adf2d3ec9f62240ce4188831200438fab1762f092221. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/IDA881900527.