Libuše Domanínská
type: MusicGroup
genre: opera
description: Libuše Domanínská (née Klobásková, married Vyčichlová; 4 July 1924 – 2 February 2021) was a Czech classical soprano who had a career in concert and opera from the 1940s through the 1970s. She was a le
popularity: 2
followers: 25
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6dd322458cd09266f3aa357f8574935a917ad8e88e151bd224a85f803c1421c6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bb3573bf-1591-4ec5-bcd9-f70e7c4f3bea.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bb3573bf-1591-4ec5-bcd9-f70e7c4f3bea.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bb3573bf-1591-4ec5-bcd9-f70e7c4f3bea
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6dd322458cd09266f3aa357f8574935a917ad8e88e151bd224a85f803c1421c6","name":"Libuše Domanínská","registered_at":"2026-06-20T16:44:55Z","symbol":"NIM1659836","token_address":"0x0d4f2537132b2b7f0ac755ea24b8d6990acd858f","type":"artist","uuid":"bb3573bf-1591-4ec5-bcd9-f70e7c4f3bea"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd322458cd09266f3aa357f8574935a917ad8e88e151bd224a85f803c1421c6. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb3573bf-1591-4ec5-bcd9-f70e7c4f3bea.json and https://artists.proofprofile.net/proofs/artist/bb3573bf-1591-4ec5-bcd9-f70e7c4f3bea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:10:41Z
  text: {"copyright_id":"0x6dd322458cd09266f3aa357f8574935a917ad8e88e151bd224a85f803c1421c6","name":"Libuše Domanínská","registered_at":"2026-06-20T16:44:55Z","symbol":"NIM1659836","token_address":"0x0d4f2537132b2b7f0ac755ea24b8d6990acd858f","type":"artist","uuid":"bb3573bf-1591-4ec5-bcd9-f70e7c4f3bea"}
album: Národní umělkyně Libuše Domanínská
  type: MusicAlbum
  date published: 1956