Adam Harasiewicz
type: MusicGroup
genre: classical
genre: classical piano
description: Adam Harasiewicz (born 1 July 1932) is a Polish classical concert pianist. Biography Harasiewicz was born in Chodziez. After studying violin for two months, at the age of 10 he began piano study, a
popularity: 21
followers: 1302
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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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  date published: 2026-06-12T19:24:56Z
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album: Harasiewicz plays Chopin (Remastered)
  type: MusicAlbum
  date published: 2011-04-23
album: Chopin
  type: MusicAlbum
  date published: 2011-12-30
album: Harasiewicz Plays Chopin
  type: MusicAlbum
  date published: 2013-12-19