Kateřina Kněžíková
type: MusicGroup
popularity: 7
followers: 238
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2aed33a9659c7acfa1191c60206b8a4b5ef4f966738c3b43c372ee78c1413689
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954650
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954650
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d95ff9b0-facf-40cb-9040-4f3437a1b6e6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d95ff9b0-facf-40cb-9040-4f3437a1b6e6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d95ff9b0-facf-40cb-9040-4f3437a1b6e6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:51:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2aed33a9659c7acfa1191c60206b8a4b5ef4f966738c3b43c372ee78c1413689","name":"Kateřina Kněžíková","registered_at":"2026-06-21T03:51:52Z","symbol":"NIM1810404","token_address":"0x74eb44ae73d71ea9845fa870ecb41c4f617a39f0","type":"artist","uuid":"d95ff9b0-facf-40cb-9040-4f3437a1b6e6"}
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 0x2aed33a9659c7acfa1191c60206b8a4b5ef4f966738c3b43c372ee78c1413689. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d95ff9b0-facf-40cb-9040-4f3437a1b6e6.json and https://artists.proofprofile.net/proofs/artist/d95ff9b0-facf-40cb-9040-4f3437a1b6e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:51:12Z
  text: {"copyright_id":"0x2aed33a9659c7acfa1191c60206b8a4b5ef4f966738c3b43c372ee78c1413689","name":"Kateřina Kněžíková","registered_at":"2026-06-21T03:51:52Z","symbol":"NIM1810404","token_address":"0x74eb44ae73d71ea9845fa870ecb41c4f617a39f0","type":"artist","uuid":"d95ff9b0-facf-40cb-9040-4f3437a1b6e6"}
album: Martinů: Bouquet of Flowers - Novák: Philharmonic Dances
  type: MusicAlbum
  date published: 2017-11-16
album: Mahler: Des Knaben Wunderhorn
  type: MusicAlbum
  date published: 2021-11-12