Howard Curtis (born 1949) is a British translator of French, Italian and Spanish fiction. He won the 2013 Marsh Award for Children's Literature in Translation for his translation from Italian of In t
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 0xf34940cbdb115592ad425be728fa0a00d7e3308ae0b0272a7cc1684b85b0c5cc. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d074367a-ae6f-4fbb-b504-c7edb20144d8.json and https://artists.proofprofile.net/proofs/artist/d074367a-ae6f-4fbb-b504-c7edb20144d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).