Katja Danowski
type: MusicGroup
popularity: 46
followers: 421
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x63db5a6a27c8ac68a733c10a4a886a53bfb70c5d91746f19987918ea01c7523f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c7d52980-76d6-474e-9465-b4700f33e3ec.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c7d52980-76d6-474e-9465-b4700f33e3ec.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c7d52980-76d6-474e-9465-b4700f33e3ec
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x63db5a6a27c8ac68a733c10a4a886a53bfb70c5d91746f19987918ea01c7523f","name":"Katja Danowski","registered_at":"2026-06-12T18:14:31Z","symbol":"NIM0333066","token_address":"0xb10591044704dede2a17d36a5f2775828cbb9c0b","type":"artist","uuid":"c7d52980-76d6-474e-9465-b4700f33e3ec"}
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 0x63db5a6a27c8ac68a733c10a4a886a53bfb70c5d91746f19987918ea01c7523f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7d52980-76d6-474e-9465-b4700f33e3ec.json and https://artists.proofprofile.net/proofs/artist/c7d52980-76d6-474e-9465-b4700f33e3ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x63db5a6a27c8ac68a733c10a4a886a53bfb70c5d91746f19987918ea01c7523f","name":"Katja Danowski","registered_at":"2026-06-12T18:14:31Z","symbol":"NIM0333066","token_address":"0xb10591044704dede2a17d36a5f2775828cbb9c0b","type":"artist","uuid":"c7d52980-76d6-474e-9465-b4700f33e3ec"}
album: Das Bücherschloss. Der verzauberte Schlüssel [Band 2]
  type: MusicAlbum
  date published: 2021-10-14