Saira Khan (born 15 May 1970) is a British television personality. She was a contestant on the first series of The Apprentice in 2005, in which she finished as the runner-up. In 2012, Khan competed in
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c46ecf1f9e14e61af4f699563ab9042cb22f3134bb6716a08b133cbe0338b1. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c79ad00c-218f-4d99-b24e-03cd36e6fcda.json and https://artists.proofprofile.net/proofs/artist/c79ad00c-218f-4d99-b24e-03cd36e6fcda.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).