Käpt`n Hook
type: MusicGroup
popularity: 2
followers: 235
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd32c399db52e6743c369a44b798159f52db5e21baddda3cfcc66ea5a05ac0b94
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954017
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954017
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/34d07798-8150-41b8-83a9-cc9de7665b1f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/34d07798-8150-41b8-83a9-cc9de7665b1f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/34d07798-8150-41b8-83a9-cc9de7665b1f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T23:38:33Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd32c399db52e6743c369a44b798159f52db5e21baddda3cfcc66ea5a05ac0b94","name":"Käpt`n Hook","registered_at":"2026-06-16T08:17:22Z","symbol":"NIM0992163","token_address":"0xcaf327fda30051939036019aa57e0408358af43a","type":"artist","uuid":"34d07798-8150-41b8-83a9-cc9de7665b1f"}
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 0xd32c399db52e6743c369a44b798159f52db5e21baddda3cfcc66ea5a05ac0b94. 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/34d07798-8150-41b8-83a9-cc9de7665b1f.json and https://artists.proofprofile.net/proofs/artist/34d07798-8150-41b8-83a9-cc9de7665b1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xd32c399db52e6743c369a44b798159f52db5e21baddda3cfcc66ea5a05ac0b94","name":"Käpt`n Hook","registered_at":"2026-06-16T08:17:22Z","symbol":"NIM0992163","token_address":"0xcaf327fda30051939036019aa57e0408358af43a","type":"artist","uuid":"34d07798-8150-41b8-83a9-cc9de7665b1f"}
album: Nur noch einmal
  type: MusicAlbum
  date published: 2011-08-01
album: Des Wortes angeklagt
  type: MusicAlbum
  date published: 2012-08-03
album: Käpt'n Hook's Reisen
  type: MusicAlbum
  date published: 2017-03-03