Silesian String Quartet
type: MusicGroup
genre: chamber music
description: The Silesian String Quartet is a string quartet founded in 1978 by the graduates of the Karol Szymanowski Academy of Music in Katowice, Poland. Its current members are: Szymon Krzeszowiec (violin I)
popularity: 11
followers: 522
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-15T04:47:56Z
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album: Bacewicz: Two Piano Quintets, Quartet for Four Violins & Quartet for Four Cellos
  type: MusicAlbum
  date published: 2018-04-01