Sheila Reid (born 21 December 1937) is a Scottish actress. An original member of the Royal National Theatre in 1963, she played Bianca in the National's 1965 film version of Othello, with Laurence Oli
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 0xd27fb27f89ba05050b5d950367fe57d976c9d78bfd14a203edb6bab70f0bf0d3. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44a4a8a5-6568-4d1a-841e-967508c84e6a.json and https://artists.proofprofile.net/proofs/artist/44a4a8a5-6568-4d1a-841e-967508c84e6a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).