Harald Vogel
type: MusicGroup
description: thumb|Vogel in 1990 Harald Vogel (born 21 June 1941 in Ottersberg) is a German organist, organologist, and author. He is a leading expert on Renaissance and Baroque keyboard music. He has been profess
popularity: 4
followers: 305
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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: 2026-06-17T08:10:43Z
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album: Buxtehude: Early Organ Works
  type: MusicAlbum
  date published: 2018-09-01
album: Arp Schnitger and the Hamburg Organ Tradition
  type: MusicAlbum
  date published: 2019-02-01
album: Bach: Early Organ Works
  type: MusicAlbum
  date published: 2012-04-01
album: The Young Bach
  type: MusicAlbum
  date published: 2011-10-04
album: Sweelinck: Organ Works Vol. 1
  type: MusicAlbum
  date published: 2011-04-01
album: Vogel, Harald: Recital at Church of the Ascension
  type: MusicAlbum
  date published: 2010-08-01
album: The Organs of Ostfriesland, Vol. 4
  type: MusicAlbum
  date published: 2010-08-01
album: The Bach Circle, Vol. 3
  type: MusicAlbum
  date published: 2010-08-01
album: The Bach Circle, Vol. 2
  type: MusicAlbum
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album: Buxtehude: Orgelwerke Vol. 7
  type: MusicAlbum
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album: Buxtehude: Orgelwerke Vol. 6
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album: Buxtehude: Orgelwerke Vol. 3
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album: Buxtehude: Orgelwerke Vol. 2
  type: MusicAlbum
  date published: 1988
album: Buxtehude: Orgelwerke Vol. 1
  type: MusicAlbum
  date published: 1987