Christopher David Addison (born 5 November 1971) is a Welsh comedian, writer, actor, and director. He is known for his role as Ollie Reeder in the BBC Two political satire series The Thick of It (2005
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 0x5b319552aba6eb3d58e9abf00d5e25d6adbe369f0857541b4ecc45b32d7afcb5. 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/6bdb3d7a-c21c-4f4d-b817-41e6a573665c.json and https://artists.proofprofile.net/proofs/artist/6bdb3d7a-c21c-4f4d-b817-41e6a573665c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).