{"copyright_id":"0x78e5dbfffe51c5cc4cec39f3bc06fcbf8c818b7682470c3f85230f36b716eeee","name":"Stan Brenders et son grand orchestre","registered_at":"2026-06-20T19:43:59Z","symbol":"NIM1694126","token_address":"0x17eafaed74ca7d73f9b72b20cf25d32a21fc215c","type":"artist","uuid":"c18da8dd-c222-4ba8-8895-59a5bb86da82"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e5dbfffe51c5cc4cec39f3bc06fcbf8c818b7682470c3f85230f36b716eeee. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c18da8dd-c222-4ba8-8895-59a5bb86da82.json and https://artists.proofprofile.net/proofs/artist/c18da8dd-c222-4ba8-8895-59a5bb86da82.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).