Geert Bierling
type: MusicGroup
genre: classical-organ
popularity: 3
followers: 103
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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: 2026-06-16T06:37:25Z
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album: Handel Four Grand Organ Concertos
  type: MusicAlbum
  date published: 2019-04-01
album: Bierling Live
  type: MusicAlbum
  date published: 2017
album: Rotterdam Doelen Organ Concert
  type: MusicAlbum
  date published: 2016-08-10
album: Handel Six Concerti Grossi Opus 3
  type: MusicAlbum
  date published: 2016
album: Handel Organ Concertos Opus 7
  type: MusicAlbum
  date published: 2015
album: Bach by Bierling: Volume 1
  type: MusicAlbum
  date published: 2010
album: Organo Concertato
  type: MusicAlbum
  date published: 2009-07-01
album: Fontys Conservatorium: orgelmuziek
  type: MusicAlbum
  date published: 2005-05-05
album: An American in Paris
  type: MusicAlbum
  date published: 2005
album: In Gusto Italiano
  type: MusicAlbum
  date published: 2004
album: The London Organ Virtuoso
  type: MusicAlbum
  date published: 2003
album: Musica Di Venezia
  type: MusicAlbum
  date published: 2002
album: Romantic Favourites
  type: MusicAlbum
  date published: 2001
album: Hallo wereld, hier ben ik! (Hee, ga je mee) [Special edition]
  type: MusicAlbum
  date published: 2021-04-12
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    by artist: Marije Bierling
    by artist: Geert Bierling
    in album: Hallo wereld, hier ben ik! (Hee, ga je mee) [Special edition]
      type: MusicAlbum
      date published: 2021-04-12
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
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      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: Hallo wereld, hier ben ik! (Hee, ga je mee) - Special edition
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      additional property: Tempo (BPM)
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      additional property: Musical Key
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      additional property: Danceability
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      additional property: Speechiness
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      additional property: Acousticness
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      additional property: Liveness
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      additional property: Valence (Positivity)
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        value: 0.648
      additional property: Loudness (dB)
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        value: -14.733
      additional property: Key Name
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        value: G
      additional property: Mode Name
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