William Speakman-Pitt, VC (21 September 1927 – 20 June 2018), known as Bill Speakman, was a British Army soldier and a recipient of the Victoria Cross, the highest award for gallantry in the face of t
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 0xc380c84dc39a3854d04a209e2b5aa2b449c9673fbb27429ad46c50f6887b66e7. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e245939-afdc-4687-a11b-cb8812b367cd.json and https://artists.proofprofile.net/proofs/artist/9e245939-afdc-4687-a11b-cb8812b367cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).