Hilke Helling
type: MusicGroup
genre: choral
popularity: 10
followers: 34
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x94bd3b782f70ff7412eb642fcbd13a43d61dc25330513a1d1ad40ebc52801a8d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953882
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953882
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0a773151-28cf-4696-b1fb-91e616faee06.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0a773151-28cf-4696-b1fb-91e616faee06.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0a773151-28cf-4696-b1fb-91e616faee06
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T03:13:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x94bd3b782f70ff7412eb642fcbd13a43d61dc25330513a1d1ad40ebc52801a8d","name":"Hilke Helling","registered_at":"2026-06-15T17:09:16Z","symbol":"NIM0775387","token_address":"0xe638186968c327400a9447911d54839f81cb0d3b","type":"artist","uuid":"0a773151-28cf-4696-b1fb-91e616faee06"}
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 0x94bd3b782f70ff7412eb642fcbd13a43d61dc25330513a1d1ad40ebc52801a8d. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a773151-28cf-4696-b1fb-91e616faee06.json and https://artists.proofprofile.net/proofs/artist/0a773151-28cf-4696-b1fb-91e616faee06.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x94bd3b782f70ff7412eb642fcbd13a43d61dc25330513a1d1ad40ebc52801a8d","name":"Hilke Helling","registered_at":"2026-06-15T17:09:16Z","symbol":"NIM0775387","token_address":"0xe638186968c327400a9447911d54839f81cb0d3b","type":"artist","uuid":"0a773151-28cf-4696-b1fb-91e616faee06"}
album: Haydn: Missa Sanctae Caeciliae, Hob. XXII:5
  type: MusicAlbum
  date published: 2026-03-06