Gunnar Graps
type: MusicGroup
description: Gunnar Graps-Grāfs (27 November 1951 – 17 May 2004) was a popular Estonian musician and one of the pioneers of hard rock in Estonia and the former Soviet Union. He has sold hundreds of thousands of re
popularity: 2
followers: 1751
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subject of: OpenTimestamps Proof of Existence
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album: Polemine
  type: MusicAlbum
  date published: 2012-06-04
album: Estonian Gold Fund Vol.1
  type: MusicAlbum
  date published: 2012-06-04
album: Estonian Gold Fund Vol.2
  type: MusicAlbum
  date published: 2012-06-04
album: Tühjad pihud
  type: MusicAlbum
  date published: 2025-11-07
track: Leidmine

Leidmine
type: MusicRecording
duration: PT3M19S
duration ms: 199000
explicit: false
by artist: Gunnar Graps
by artist: Magnetic Band
in album: Groove of ESSR: Funk, Disco, Jazz from Soviet Estonia
  type: MusicAlbum
  date published: 2019-07-05
isrc code: EEER11900096
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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
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  date published: 2026-07-02T11:38:34Z
audio: Leidmine
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  additional property: Loudness (dB)
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  additional property: Key Name
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