Roger Charles Llewellyn (14 May 1945 – 17 April 2018) was a British actor born in Swansea.Email from Gareth Armstrong He played Sherlock Holmes in 1997, 2007 and 2008 in stage versions of The Hound 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 0x976de6f725b8f8a1a027c249c5278ea7fb6b03183cde016648af0bc3420b18fb. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18372379-3044-4a0e-9934-450da05c8701.json and https://artists.proofprofile.net/proofs/artist/18372379-3044-4a0e-9934-450da05c8701.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.