Karina Wisniewska
type: MusicGroup
genre: chamber music
popularity: 8
followers: 27
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdc2e7b9a8e491062ea2e6f39786548eab6cfdaee550febc525b7c963b91c8549
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953932
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953932
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1f47c446-3e2d-48c0-aa34-14c296d9d299.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1f47c446-3e2d-48c0-aa34-14c296d9d299.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1f47c446-3e2d-48c0-aa34-14c296d9d299
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdc2e7b9a8e491062ea2e6f39786548eab6cfdaee550febc525b7c963b91c8549","name":"Karina Wisniewska","registered_at":"2026-06-16T00:26:23Z","symbol":"NIM0879668","token_address":"0xe87ab8edaf0adee039d52c6fa1ac09f4bba88c6c","type":"artist","uuid":"1f47c446-3e2d-48c0-aa34-14c296d9d299"}
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 0xdc2e7b9a8e491062ea2e6f39786548eab6cfdaee550febc525b7c963b91c8549. Chain 2 (Bitcoin): anchored in block 953932 (2026-06-16T11:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f47c446-3e2d-48c0-aa34-14c296d9d299.json and https://artists.proofprofile.net/proofs/artist/1f47c446-3e2d-48c0-aa34-14c296d9d299.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T11:10:43Z
  text: {"copyright_id":"0xdc2e7b9a8e491062ea2e6f39786548eab6cfdaee550febc525b7c963b91c8549","name":"Karina Wisniewska","registered_at":"2026-06-16T00:26:23Z","symbol":"NIM0879668","token_address":"0xe87ab8edaf0adee039d52c6fa1ac09f4bba88c6c","type":"artist","uuid":"1f47c446-3e2d-48c0-aa34-14c296d9d299"}