Sofya Gulyak
type: MusicGroup
genre: chamber music
genre: classical piano
description: Sofya Gulyak (born 29 December 1979) is a Russian classical pianist. She was the first woman to win the Leeds Piano Competition. Gulyak was born in Kazan. She studied at the Kazan State Conservatoire
popularity: 2
followers: 124
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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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
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  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359901b03712f4e7f0246fdd22a92e36f8deb3bcfa4455a0badfb516e49e07a3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64c922f2-9eb2-4fa2-8a54-2276fa22685b.json and https://artists.proofprofile.net/proofs/artist/64c922f2-9eb2-4fa2-8a54-2276fa22685b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
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album: Medtner, Rachmaninoff, Prokofiev: Works for Piano
  type: MusicAlbum
  date published: 2013-08-12
album: Chaconne
  type: MusicAlbum
  date published: 2017-12-01