Peggy Arline Middleton (3 January 1916 – 26 August 1974) was a British politician who served on the Greater London Council (GLC). Born in Bristol as Peggy Loughman, she was educated at Kingswood Gram
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 0x0c4fff8b4326dd862c2802fc492a62679846fc685b296e01135ae4a41b43d976. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ea7d556-5e71-4ffb-8dd1-79879892d90b.json and https://artists.proofprofile.net/proofs/artist/8ea7d556-5e71-4ffb-8dd1-79879892d90b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).