John Turner
type: MusicGroup
description: John Napier Wyndham Turner (June 7, 1929September 19, 2020) was the 17th prime minister of Canada, serving from June to September 1984. He served as leader of the Liberal Party and leader of the Oppos
popularity: 6
followers: 14
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8867d202b3f8180ea0b4cb648b53e2b06b6ebc2c84081b5943d8017ca387ffb4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bbf1b4a7-db8b-4df9-b31d-9576f80d8f2c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bbf1b4a7-db8b-4df9-b31d-9576f80d8f2c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bbf1b4a7-db8b-4df9-b31d-9576f80d8f2c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8867d202b3f8180ea0b4cb648b53e2b06b6ebc2c84081b5943d8017ca387ffb4","name":"John Turner","registered_at":"2026-06-20T17:39:02Z","symbol":"NIM1668692","token_address":"0xfdd8296937afff657002d339127c5c402fb6cae7","type":"artist","uuid":"bbf1b4a7-db8b-4df9-b31d-9576f80d8f2c"}
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 0x8867d202b3f8180ea0b4cb648b53e2b06b6ebc2c84081b5943d8017ca387ffb4. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bbf1b4a7-db8b-4df9-b31d-9576f80d8f2c.json and https://artists.proofprofile.net/proofs/artist/bbf1b4a7-db8b-4df9-b31d-9576f80d8f2c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x8867d202b3f8180ea0b4cb648b53e2b06b6ebc2c84081b5943d8017ca387ffb4","name":"John Turner","registered_at":"2026-06-20T17:39:02Z","symbol":"NIM1668692","token_address":"0xfdd8296937afff657002d339127c5c402fb6cae7","type":"artist","uuid":"bbf1b4a7-db8b-4df9-b31d-9576f80d8f2c"}
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