John Le Mesurier
type: MusicGroup
genre: opera
description: thumb|upright=1.15| John Le Mesurier (, born John Elton Le Mesurier Halliley; 5 April 191215 November 1983) was an English actor. He is probably best remembered for his comedic role as Sergeant Arthur
popularity: 6
followers: 67
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe322c84dc55c21c437d74df8c734252f8e452203938b695fd518bb6e0bce9117
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b2b4d0b6-e872-45f3-a552-042a0ecdc8f9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b2b4d0b6-e872-45f3-a552-042a0ecdc8f9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b2b4d0b6-e872-45f3-a552-042a0ecdc8f9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe322c84dc55c21c437d74df8c734252f8e452203938b695fd518bb6e0bce9117","name":"John Le Mesurier","registered_at":"2026-06-20T12:44:46Z","symbol":"NIM1615437","token_address":"0x64896d9d10ea6fb0d8ca4c0c4fd09826711ced12","type":"artist","uuid":"b2b4d0b6-e872-45f3-a552-042a0ecdc8f9"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe322c84dc55c21c437d74df8c734252f8e452203938b695fd518bb6e0bce9117. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2b4d0b6-e872-45f3-a552-042a0ecdc8f9.json and https://artists.proofprofile.net/proofs/artist/b2b4d0b6-e872-45f3-a552-042a0ecdc8f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0xe322c84dc55c21c437d74df8c734252f8e452203938b695fd518bb6e0bce9117","name":"John Le Mesurier","registered_at":"2026-06-20T12:44:46Z","symbol":"NIM1615437","token_address":"0x64896d9d10ea6fb0d8ca4c0c4fd09826711ced12","type":"artist","uuid":"b2b4d0b6-e872-45f3-a552-042a0ecdc8f9"}
album: Once Upon a World - Bedtime Bible Stories Volume 1
  type: MusicAlbum
  date published: 2008-05-04
album: Once Upon a World - Bedtime Bible Stories Volume2
  type: MusicAlbum
  date published: 2008-06-08