David John Lee Maloney (14 December 1933 – 18 July 2006) was a British television director and producer, best known for his work on the BBC science-fiction series Doctor Who, Blake's 7 and The Day of
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 0x8eeaf9279e0b7b91b91286698eb7dc19aefa3717439a463ed775bab242de1d8e. 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/676fe6b2-1c67-41ea-b618-84010f06285b.json and https://artists.proofprofile.net/proofs/artist/676fe6b2-1c67-41ea-b618-84010f06285b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.