Maarten Hogenhuis
type: MusicGroup
popularity: 13
followers: 1254
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa549904951f679ad742871bd25a1e823b62832d013019a1d23d46eb13caa6ad2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953768
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953768
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c16950c9-3e35-4040-b7c1-480c436aaa88.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c16950c9-3e35-4040-b7c1-480c436aaa88.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c16950c9-3e35-4040-b7c1-480c436aaa88
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T09:30:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa549904951f679ad742871bd25a1e823b62832d013019a1d23d46eb13caa6ad2","name":"Maarten Hogenhuis","registered_at":"2026-06-15T00:45:40Z","symbol":"NIM0628902","token_address":"0xafca1beaeb2f56b81013e5325afb524d640d2aea","type":"artist","uuid":"c16950c9-3e35-4040-b7c1-480c436aaa88"}
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 0xa549904951f679ad742871bd25a1e823b62832d013019a1d23d46eb13caa6ad2. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c16950c9-3e35-4040-b7c1-480c436aaa88.json and https://artists.proofprofile.net/proofs/artist/c16950c9-3e35-4040-b7c1-480c436aaa88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
  text: {"copyright_id":"0xa549904951f679ad742871bd25a1e823b62832d013019a1d23d46eb13caa6ad2","name":"Maarten Hogenhuis","registered_at":"2026-06-15T00:45:40Z","symbol":"NIM0628902","token_address":"0xafca1beaeb2f56b81013e5325afb524d640d2aea","type":"artist","uuid":"c16950c9-3e35-4040-b7c1-480c436aaa88"}
album: 4/3
  type: MusicAlbum
  date published: 2014-09-08
album: 4/3
  type: MusicAlbum
  date published: 2014-09-08
album: 4/3
  type: MusicAlbum
  date published: 2014-09-08
album: Mimicry
  type: MusicAlbum
  date published: 2017-01-06
album: Mimicry
  type: MusicAlbum
  date published: 2017-01-06
album: Rise & Fall
  type: MusicAlbum
  date published: 2019-05-01
album: Rise & Fall
  type: MusicAlbum
  date published: 2019-05-01
album: Rise & Fall
  type: MusicAlbum
  date published: 2019-05-01
album: Trio +3
  type: MusicAlbum
  date published: 2020-03-20
album: By All Means
  type: MusicAlbum
  date published: 2025-05-30