thumb|upright|Portrait of the Scribe Mir 'Abd Allah Katib in the Company of a Youth Burnishing Paper (Mughal Empire, ca. 1602) A scribe is a person who serves as a professional copyist, especially one
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 0xcf2a93a9d15762b6183a3ba687b5aa8ed9500aa99979bf6621bd713d7438a19e. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/993dba6f-8bce-4e60-8f9c-8fa682b24f7a.json and https://artists.proofprofile.net/proofs/artist/993dba6f-8bce-4e60-8f9c-8fa682b24f7a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).