Van Diemen
type: MusicGroup
genre: melodic death metal
description: Van Diemen International, Ltd. was a British race car manufacturer based in Snetterton, Norfolk, United Kingdom. The company had a reputation for high-volume production runs of its cars, the most well
popularity: 2
followers: 727
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x346599450649fe50d5741a1886f3c802253d4a4eed0b33f0e032388887c2c73c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/57c635ee-2d9a-40dd-8012-a842151eada9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/57c635ee-2d9a-40dd-8012-a842151eada9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/57c635ee-2d9a-40dd-8012-a842151eada9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x346599450649fe50d5741a1886f3c802253d4a4eed0b33f0e032388887c2c73c","name":"Van Diemen","registered_at":"2026-06-16T20:10:29Z","symbol":"NIM1162308","token_address":"0xe8d7df89bfcb6401b2029dffab771ca9445f94c5","type":"artist","uuid":"57c635ee-2d9a-40dd-8012-a842151eada9"}
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 0x346599450649fe50d5741a1886f3c802253d4a4eed0b33f0e032388887c2c73c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/57c635ee-2d9a-40dd-8012-a842151eada9.json and https://artists.proofprofile.net/proofs/artist/57c635ee-2d9a-40dd-8012-a842151eada9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x346599450649fe50d5741a1886f3c802253d4a4eed0b33f0e032388887c2c73c","name":"Van Diemen","registered_at":"2026-06-16T20:10:29Z","symbol":"NIM1162308","token_address":"0xe8d7df89bfcb6401b2029dffab771ca9445f94c5","type":"artist","uuid":"57c635ee-2d9a-40dd-8012-a842151eada9"}
album: Van Diemen
  type: MusicAlbum
  date published: 2021-01-18
album: Sarcophilus Laniarius
  type: MusicAlbum
  date published: 2022-07-31
album: Van Diemen III
  type: MusicAlbum
  date published: 2025-10-13