Mark Boozer
type: MusicGroup
genre: chamber music
genre: classical piano
popularity: 2
followers: 23
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6ef83ffc3254e37d4fd191e36eb78a502cd09a27e3a7c27e81fd1c9dcb1a8e4a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fd69580c-0300-4327-b4ac-340067eddf4e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fd69580c-0300-4327-b4ac-340067eddf4e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fd69580c-0300-4327-b4ac-340067eddf4e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T20:46:40Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6ef83ffc3254e37d4fd191e36eb78a502cd09a27e3a7c27e81fd1c9dcb1a8e4a","name":"Mark Boozer","registered_at":"2026-06-21T17:39:17Z","symbol":"NIM1989674","token_address":"0x13c5f6c641261b1d853af8fe7e6f8829c34626c0","type":"artist","uuid":"fd69580c-0300-4327-b4ac-340067eddf4e"}
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 0x6ef83ffc3254e37d4fd191e36eb78a502cd09a27e3a7c27e81fd1c9dcb1a8e4a. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd69580c-0300-4327-b4ac-340067eddf4e.json and https://artists.proofprofile.net/proofs/artist/fd69580c-0300-4327-b4ac-340067eddf4e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T20:46:40Z
  text: {"copyright_id":"0x6ef83ffc3254e37d4fd191e36eb78a502cd09a27e3a7c27e81fd1c9dcb1a8e4a","name":"Mark Boozer","registered_at":"2026-06-21T17:39:17Z","symbol":"NIM1989674","token_address":"0x13c5f6c641261b1d853af8fe7e6f8829c34626c0","type":"artist","uuid":"fd69580c-0300-4327-b4ac-340067eddf4e"}