Andrei Sokolov
type: MusicGroup
genre: opera
description: Andrei Yurievich Sokolov (; romanized: Andrey Yur'yevich Sokolov; born 20 March 1963, in Vorkuta, Komi ASSR, Russian SFSR, Soviet Union) is a Russian chess Grandmaster living in and playing for France
popularity: 4
followers: 34
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additional property: OTSVerifyInstructions
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  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
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track: The Queen of Spades, Op. 68, Act I Scene 1: Scene and Herman's Arioso "Chem konchilas vchera igra?"
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  duration: PT2M51S
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  by artist: Pyotr Ilyich Tchaikovsky
  by artist: Andrei Sokolov
  by artist: Mikhail Kiselyov
  by artist: Valery Yaroslavtsev
  by artist: Zurab Anjaparidze
  by artist: Boris Khaikin
  by artist: Bolshoi Theatre Orchestra
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    date published: 2013-01-01
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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
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    date published: 2026-07-30T06:39:12Z
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track: The Queen of Spades, Op. 68, Act I Scene 1: Scene and Tomsky's Ballade "Kakaya vedma eta Grafinya"
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  by artist: Pyotr Ilyich Tchaikovsky
  by artist: Andrei Sokolov
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  by artist: Valery Yaroslavtsev
  by artist: Boris Khaikin
  by artist: Bolshoi Theatre Orchestra
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    date published: 2013-01-01
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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
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    date published: 2026-07-30T01:34:28Z
  audio: The Queen of Spades, Op. 68, Act I Scene 1: Scene and Tomsky's Ballade "Kakaya vedma eta Grafinya"
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track: The Queen of Spades, Op. 68, Act I Scene 1: Final Scene "Se non e vero"
track: The Queen of Spades, Op. 68, Act II Scene 3: Scene and Yeletsky's Aria "Hozyain prosit"
track: The Queen of Spades, Op. 68, Act II Scene 3: Scene "Posle predstavleniya zhdite menya v zale"

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The Queen of Spades, Op. 68, Act I Scene 1: Final Scene "Se non e vero"
type: MusicRecording
duration: PT3M43S
duration ms: 223413
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by artist: Pyotr Ilyich Tchaikovsky
by artist: Andrei Sokolov
by artist: Valery Yaroslavtsev
by artist: Zurab Anjaparidze
by artist: Boris Khaikin
by artist: Bolshoi Theatre Orchestra
in album: Tchaikovsky: The Queen of Spades, Op. 68
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  date published: 2013-01-01
isrc code: UK2Y21800858
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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
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  date published: 2026-07-30T04:47:22Z
audio: The Queen of Spades, Op. 68, Act I Scene 1: Final Scene "Se non e vero"
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The Queen of Spades, Op. 68, Act II Scene 3: Scene and Yeletsky's Aria "Hozyain prosit"
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duration: PT1M30S
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explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Anatoly Mishutin
by artist: Andrei Sokolov
by artist: Mikhail Kiselyov
by artist: Valery Yaroslavtsev
by artist: Boris Khaikin
by artist: Bolshoi Theatre Orchestra
in album: Tchaikovsky: The Queen of Spades, Op. 68
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  date published: 2013-01-01
isrc code: UK2Y21800872
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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
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  date published: 2026-07-08T03:20:19Z
audio: The Queen of Spades, Op. 68, Act II Scene 3: Scene and Yeletsky's Aria "Hozyain prosit"
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The Queen of Spades, Op. 68, Act II Scene 3: Scene "Posle predstavleniya zhdite menya v zale"
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by artist: Andrei Sokolov
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by artist: Bolshoi Theatre Orchestra
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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
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  date published: 2026-07-08T03:20:19Z
audio: The Queen of Spades, Op. 68, Act II Scene 3: Scene "Posle predstavleniya zhdite menya v zale"
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