Robert Gunther
type: MusicGroup
description: 220px|thumb|right|The Museum of the History of Science in the Old Ashmolean building Oxford, founded by Robert Gunther in the 1920s. Robert William Theodore Gunther (23 August 1869 – 9 March 1940) wa
popularity: 25
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0defd9c65f09c126483d0228c4bacad2fa95cf4bdb6cbdd7cdad592fc62a440a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c4197043-6528-4ab9-9cd2-974777752a06.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c4197043-6528-4ab9-9cd2-974777752a06.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c4197043-6528-4ab9-9cd2-974777752a06
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0defd9c65f09c126483d0228c4bacad2fa95cf4bdb6cbdd7cdad592fc62a440a","name":"Robert Gunther","registered_at":"2026-06-12T09:09:32Z","symbol":"NIM0251823","token_address":"0x382719ab3cb21990bcdcd46a52b52eea6dc925fd","type":"artist","uuid":"c4197043-6528-4ab9-9cd2-974777752a06"}
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 0x0defd9c65f09c126483d0228c4bacad2fa95cf4bdb6cbdd7cdad592fc62a440a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4197043-6528-4ab9-9cd2-974777752a06.json and https://artists.proofprofile.net/proofs/artist/c4197043-6528-4ab9-9cd2-974777752a06.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x0defd9c65f09c126483d0228c4bacad2fa95cf4bdb6cbdd7cdad592fc62a440a","name":"Robert Gunther","registered_at":"2026-06-12T09:09:32Z","symbol":"NIM0251823","token_address":"0x382719ab3cb21990bcdcd46a52b52eea6dc925fd","type":"artist","uuid":"c4197043-6528-4ab9-9cd2-974777752a06"}
album: As the Night Falls
  type: MusicAlbum
  date published: 2025-02-22