John Haydn Davies (1905 – 1991) was a Welsh schoolmaster and conductor. His family lived in the Rhondda area, and he was introduced to music whilst attending Blaencwm Welsh Baptist Chapel. He was educ
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 0x21f4e002db88c78ad32ac8e0ab0ed83d95b3c40225c5a70844a7fe9119c883a3. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/035fc501-30d1-4cbf-bb7c-4fa39e46335a.json and https://artists.proofprofile.net/proofs/artist/035fc501-30d1-4cbf-bb7c-4fa39e46335a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).