Susan Georgina "Su" Pollard (born 7 November 1949) is a British actress, singer, songwriter and author whose career has spanned over 50 years. Pollard is most known for her role in the sitcom Hi-de-Hi
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 0x35178b916f32a26523f52f3f97d561987e05027c44244774e3a303ab9fe7e386. 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/6db103d2-7b32-441b-bd4f-3a1c763a1ae4.json and https://artists.proofprofile.net/proofs/artist/6db103d2-7b32-441b-bd4f-3a1c763a1ae4.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.