Paul Darrow (born Paul Valentine Birkby; 2 May 1941 – 3 June 2019) was an English actor and writer. He became best known for playing Kerr Avon in the BBC science fiction television series Blake's 7 be
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 0xdd08a17bbf244dd16a9df5599871a77569c1d1d0ff64c7831a959fbed8658fef. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49247600-793f-4911-921b-107b4cf9ba59.json and https://artists.proofprofile.net/proofs/artist/49247600-793f-4911-921b-107b4cf9ba59.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Blake's 7, Lucifer: Revelation (Unabridged)