Katja Dörr
type: MusicGroup
popularity: 8
followers: 55
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd6576c55d944e495fa4e0d5b9fbeb0863218c7aa241754e91d8339eb4ac1ae85
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953907
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953907
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/176df6f0-b176-4002-8588-569dbb9abb8c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/176df6f0-b176-4002-8588-569dbb9abb8c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/176df6f0-b176-4002-8588-569dbb9abb8c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:39:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd6576c55d944e495fa4e0d5b9fbeb0863218c7aa241754e91d8339eb4ac1ae85","name":"Katja Dörr","registered_at":"2026-06-15T21:46:42Z","symbol":"NIM0841558","token_address":"0x5866d95c2e1ace18d3f22a071b952bddf37bdb72","type":"artist","uuid":"176df6f0-b176-4002-8588-569dbb9abb8c"}
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 0xd6576c55d944e495fa4e0d5b9fbeb0863218c7aa241754e91d8339eb4ac1ae85. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/176df6f0-b176-4002-8588-569dbb9abb8c.json and https://artists.proofprofile.net/proofs/artist/176df6f0-b176-4002-8588-569dbb9abb8c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0xd6576c55d944e495fa4e0d5b9fbeb0863218c7aa241754e91d8339eb4ac1ae85","name":"Katja Dörr","registered_at":"2026-06-15T21:46:42Z","symbol":"NIM0841558","token_address":"0x5866d95c2e1ace18d3f22a071b952bddf37bdb72","type":"artist","uuid":"176df6f0-b176-4002-8588-569dbb9abb8c"}
album: Lied der Sterne [Das Musikhaus an der Alster, Teil 1 (Ungekürzt)]
  type: MusicAlbum
  date published: 2023-05-02
album: Melodie der Heimat [Das Musikhaus an der Alster, Teil 2 (Ungekürzt)]
  type: MusicAlbum
  date published: 2023-07-01
album: Klang des Schicksals [Das Musikhaus an der Alster, Teil 3 (Ungekürzt)]
  type: MusicAlbum
  date published: 2023-09-01