John Haydn Davies
type: MusicGroup
description: 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
popularity: 11
followers: 78
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x21f4e002db88c78ad32ac8e0ab0ed83d95b3c40225c5a70844a7fe9119c883a3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953592
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953592
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/035fc501-30d1-4cbf-bb7c-4fa39e46335a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/035fc501-30d1-4cbf-bb7c-4fa39e46335a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/035fc501-30d1-4cbf-bb7c-4fa39e46335a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T05:36:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x21f4e002db88c78ad32ac8e0ab0ed83d95b3c40225c5a70844a7fe9119c883a3","name":"John Haydn Davies","registered_at":"2026-06-14T04:47:47Z","symbol":"NIM0343166","token_address":"0xe3b21828e2828454a69281a4c767f09cb4fa91e2","type":"artist","uuid":"035fc501-30d1-4cbf-bb7c-4fa39e46335a"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: 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).
  date published: 2026-06-14T05:36:59Z
  text: {"copyright_id":"0x21f4e002db88c78ad32ac8e0ab0ed83d95b3c40225c5a70844a7fe9119c883a3","name":"John Haydn Davies","registered_at":"2026-06-14T04:47:47Z","symbol":"NIM0343166","token_address":"0xe3b21828e2828454a69281a4c767f09cb4fa91e2","type":"artist","uuid":"035fc501-30d1-4cbf-bb7c-4fa39e46335a"}