thumb|upright=0.9 Arwel Hughes OBE (25 August 1909 – 23 September 1988) was a Welsh orchestral conductor and composer.Rhidian Griffiths. 'Arwel Hughes', in Dictionary of Welsh Biography (2014) Life a
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 0xf8c64f6b8067bd70881402b53b6456f33eb401426f4e55a0852a2cf38588f7ea. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/507c1abf-1554-4ec4-bc83-7c0ee6b22677.json and https://artists.proofprofile.net/proofs/artist/507c1abf-1554-4ec4-bc83-7c0ee6b22677.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Arwel Hughes: Oratorio for 3 Solo Voices, Chorus & Orchestra: Chorus. Molwn Di
Arwel Hughes: Oratorio for 3 Solo Voices, Chorus & Orchestra: Tenor. O Ddydd Sul hyd Ddydd Mercher