{"copyright_id":"0xc6ea67d69efe1441162eb0e1a751c35e8ee67904d8f66d4f1dfc0cf4c53e6e79","name":"Berthold Schick und seine Alphornbläser","registered_at":"2026-06-20T15:56:55Z","symbol":"NIM1648761","token_address":"0xa0b0db88870947ef9f2ffa938f71b18c34fe47f4","type":"artist","uuid":"b8ac59f7-b7f8-46fb-8633-9f5f3aee9bf5"}
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 0xc6ea67d69efe1441162eb0e1a751c35e8ee67904d8f66d4f1dfc0cf4c53e6e79. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8ac59f7-b7f8-46fb-8633-9f5f3aee9bf5.json and https://artists.proofprofile.net/proofs/artist/b8ac59f7-b7f8-46fb-8633-9f5f3aee9bf5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).