Dick Hageman
type: MusicGroup
genre: polka
popularity: 4
followers: 27
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd4a852015c6fff3cd152f0399f5ca40bb2bb658e82aa64ce0b4614e76cb0a917
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954131
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954131
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7d90ec8c-03fa-4af6-82a7-45aa40493fac.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7d90ec8c-03fa-4af6-82a7-45aa40493fac.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7d90ec8c-03fa-4af6-82a7-45aa40493fac
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:19:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd4a852015c6fff3cd152f0399f5ca40bb2bb658e82aa64ce0b4614e76cb0a917","name":"Dick Hageman","registered_at":"2026-06-17T09:25:16Z","symbol":"NIM1351901","token_address":"0xb15be2490b9d093198c4048ef08cfcdc76a75870","type":"artist","uuid":"7d90ec8c-03fa-4af6-82a7-45aa40493fac"}
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 0xd4a852015c6fff3cd152f0399f5ca40bb2bb658e82aa64ce0b4614e76cb0a917. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d90ec8c-03fa-4af6-82a7-45aa40493fac.json and https://artists.proofprofile.net/proofs/artist/7d90ec8c-03fa-4af6-82a7-45aa40493fac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:41:05Z
  text: {"copyright_id":"0xd4a852015c6fff3cd152f0399f5ca40bb2bb658e82aa64ce0b4614e76cb0a917","name":"Dick Hageman","registered_at":"2026-06-17T09:25:16Z","symbol":"NIM1351901","token_address":"0xb15be2490b9d093198c4048ef08cfcdc76a75870","type":"artist","uuid":"7d90ec8c-03fa-4af6-82a7-45aa40493fac"}
album: Ver In De Vreemde
  type: MusicAlbum
  date published: 2020-12-18
album: Door De Jaren
  type: MusicAlbum
  date published: 2021-03-26