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 0xfa92d9fb4e0540838e96e7edefd88f9a702942efbebf8b51b53e377e26f946d8. 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/59c05edb-08ce-4dc9-9b57-64f239166171.json and https://artists.proofprofile.net/proofs/artist/59c05edb-08ce-4dc9-9b57-64f239166171.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 0x3fc47b17a267f40fa025990e86af38d3d1d7f19dd43f1a54e345ebe139a3f624. 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/FRX201502334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc105a633950c799b822477902867caa3322d1459f81dbb0f284ea1cc5d55c3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRX201502337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ceb6c8d5e9b2077409e3ab547f809b3274f1399a0dae44ca35175c4f8e9a46a. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/FRX201502339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3ced95d0780c6ea891af3bb20bb7bf81d148684af8b72abe1332ce3da97fc4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FR2X41521552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f6183c3f1fa4865b9579d857d82cd8895d34db7b588016ae7ecd6946b6f7d1. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:52:16Z), 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/FRX201507169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5b5431a4605948a0963227c3bba2e592a7be42d2dac8fd9938d2731ca7290d. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/FRX451519732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1c7845514c00b52a27b569cf68f4d5e324c9adca9de535fcb7bde859929371. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX451519735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07be5789efd6928f09f82e3934900f8451ce04025139eb881f3f73e2a7379f64. 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/FRX451519736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6e7032db45035d6258c26054ab042222d1e88b90a97adb4a0175ade6743475. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:27:25Z), 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/FRX451519737.