{"copyright_id":"0x2f1c12c4adeca0e2fafd8422ddcddd9dbf3dfa901fb95682ee9b63f0ad9c7a1f","name":"Avenue Blue","registered_at":"2026-06-21T14:02:22Z","symbol":"NIM1941136","token_address":"0x21ebab82b2d21219b9810c8b69de540dd2a6d4fb","type":"artist","uuid":"f344a97c-5e91-410c-abe6-9ff6fac1fcb3"}
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 0x2f1c12c4adeca0e2fafd8422ddcddd9dbf3dfa901fb95682ee9b63f0ad9c7a1f. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f344a97c-5e91-410c-abe6-9ff6fac1fcb3.json and https://artists.proofprofile.net/proofs/artist/f344a97c-5e91-410c-abe6-9ff6fac1fcb3.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 0x0c28a1558a9a64862b0d0a7e1a24380b0baae78b432ecdfeaf51cf352e4c2b99. 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/USAT20101827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c28a1558a9a64862b0d0a7e1a24380b0baae78b432ecdfeaf51cf352e4c2b99. 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/USAT20101827.