Katja Hemkentokrax
type: MusicGroup
popularity: 4
followers: 11
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1c4f470a0396917f55022cb0d58e382b76f9a0c540b936c029201ba0d67797bd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954035
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954035
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3c9ef889-09c5-4fc6-aeba-4eb21d064e64.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3c9ef889-09c5-4fc6-aeba-4eb21d064e64.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3c9ef889-09c5-4fc6-aeba-4eb21d064e64
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T02:39:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1c4f470a0396917f55022cb0d58e382b76f9a0c540b936c029201ba0d67797bd","name":"Katja Hemkentokrax","registered_at":"2026-06-16T10:42:38Z","symbol":"NIM1026826","token_address":"0xb6627829547182ff251e5d07db44e75618ca4556","type":"artist","uuid":"3c9ef889-09c5-4fc6-aeba-4eb21d064e64"}
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 0x1c4f470a0396917f55022cb0d58e382b76f9a0c540b936c029201ba0d67797bd. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c9ef889-09c5-4fc6-aeba-4eb21d064e64.json and https://artists.proofprofile.net/proofs/artist/3c9ef889-09c5-4fc6-aeba-4eb21d064e64.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x1c4f470a0396917f55022cb0d58e382b76f9a0c540b936c029201ba0d67797bd","name":"Katja Hemkentokrax","registered_at":"2026-06-16T10:42:38Z","symbol":"NIM1026826","token_address":"0xb6627829547182ff251e5d07db44e75618ca4556","type":"artist","uuid":"3c9ef889-09c5-4fc6-aeba-4eb21d064e64"}
album: Felina Fingerhut und das verhexte Schwarze Loch [Felina Fingerhut, Teil 1 (Ungekürzt)]
  type: MusicAlbum
  date published: 2024-08-30