David Alan Heyes (born 2 April 1946) is a British Labour Party politician and former Member of Parliament (MP) for Ashton-under-Lyne from 2001 to 2015. Early life Heyes was born in Blackley, Manchest
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 0x7cb50d314d848939757ff1759b31ba5738d87f57c3b722a98cc7b3a09c2c88cf. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ffa059d8-145b-4106-8801-ff0ab1b5e7b8.json and https://artists.proofprofile.net/proofs/artist/ffa059d8-145b-4106-8801-ff0ab1b5e7b8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Postcards from Prague, In Memory of Frantiek Pota
Postcards from Prague, in Memory of František Pošta