Le Chiffre (, 'The Cypher' or 'The Digit') is a fictional character and the main antagonist of Ian Fleming's 1953 James Bond novel, Casino Royale. On screen Le Chiffre has been portrayed by Peter Lorr
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 0xf67a1d411ac59534ab1e616353f3d80322b198ffce9eb212b3ea498528fc6290. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70737aac-a8db-41b1-bd7c-1446d47e1af0.json and https://artists.proofprofile.net/proofs/artist/70737aac-a8db-41b1-bd7c-1446d47e1af0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).