Igor Ardašev
type: MusicGroup
genre: chamber music
description: Igor Ardašev (born in Brno, 1967) is a Czech pianist. He studied at the Brno Conservatory as a pupil of Inessa Janíčková, later he pursued his studies at the Janáček Academy of Music and Performing A
popularity: 6
followers: 282
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xb1eb6ac558c496be9e019848ce1b3974a8e9b5133f2907ba6daef943cf3b9f4c
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953899
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1202eb5a-4a68-4f6d-8569-a891786c4795.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1202eb5a-4a68-4f6d-8569-a891786c4795.json
additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-16T06:37:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1eb6ac558c496be9e019848ce1b3974a8e9b5133f2907ba6daef943cf3b9f4c. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1202eb5a-4a68-4f6d-8569-a891786c4795.json and https://artists.proofprofile.net/proofs/artist/1202eb5a-4a68-4f6d-8569-a891786c4795.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0xb1eb6ac558c496be9e019848ce1b3974a8e9b5133f2907ba6daef943cf3b9f4c","name":"Igor Ardašev","registered_at":"2026-06-15T20:03:20Z","symbol":"NIM0816905","token_address":"0x6644a7faf73685777b1e7b220496d9d70c389991","type":"artist","uuid":"1202eb5a-4a68-4f6d-8569-a891786c4795"}
album: Martinů, Kalabis, Husa, Feld: Czech Viola Sonatas
  type: MusicAlbum
  date published: 2017-01-20