Katrine Madsen
type: MusicGroup
genre: jazz
genre: vocal jazz
description: Katrine Madsen (born 7 March 1972 in Aarhus, Denmark) is a Danish jazz singer. Biography Madsen studied at the Royal Danish Academy of Music and has worked in Copenhagen on albums with transplanted
popularity: 26
followers: 2710
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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: 2026-06-12T21:20:00Z
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album: I'm Old Fashioned - Quintet 1996
  type: MusicAlbum
  date published: 1996
album: Gershwin & More
  type: MusicAlbum
  date published: 2000-01-01
album: Gershwin & More (feat. Jan Lundgren & Jacob Fischer)
  type: MusicAlbum
  date published: 2001-01-01
album: Magic Night (feat. Bohuslän Big Band)
  type: MusicAlbum
  date published: 2002-01-01
album: Magic Night
  type: MusicAlbum
  date published: 2002-05-01
album: Close To You
  type: MusicAlbum
  date published: 2004
album: Supernatural Love
  type: MusicAlbum
  date published: 2006-08-22
album: Simple Life
  type: MusicAlbum
  date published: 2009-10-26
album: Dream Dancing (feat. Lars Jansson)
  type: MusicAlbum
  date published: 2013-01-30
album: You Are So Beautiful (feat. Ed Thigpen)
  type: MusicAlbum
  date published: 2013-01-30
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      date published: 2013-01-30
    genre: jazz
    genre: vocal jazz
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    additional property: OTSVerifyInstructions
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      date published: 2026-07-15T11:31:02Z
    audio: They Can't Take That Away from Me
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  track: Let There Be Love (feat. Svante Thuresson)
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    genre: jazz
    genre: vocal jazz
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-19T07:14:39Z
    audio: Let There Be Love (feat. Svante Thuresson)
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album: My Secret (feat. Jan Lundgren)
album: Live at Montmartre
album: Winter Sun
album: City Garden
album: Living Room
album: Indigo

City Garden
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duration: PT6M34S
duration ms: 394453
explicit: false
by artist: Katrine Madsen
in album: City Garden
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  date published: 2021-03-07
genre: jazz
genre: vocal jazz
isrc code: DK2A42100101
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T17:25:41Z
audio: City Garden
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Marie
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duration: PT3M54S
duration ms: 234493
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by artist: Katrine Madsen
in album: City Garden
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  date published: 2021-03-07
genre: jazz
genre: vocal jazz
isrc code: DK2A42100102
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additional property: OTSVerifyInstructions
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  date published: 2026-07-08T03:20:19Z
audio: Marie
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From a Mother to a Child
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genre: jazz
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T17:25:41Z
audio: From a Mother to a Child
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Nature
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genre: jazz
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What a Wonderful World
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  date published: 2021-11-05
genre: jazz
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My Secret (feat. Jan Lundgren)
type: MusicAlbum
date published: 2013-01-30

Live at Montmartre
type: MusicAlbum
date published: 2019-02-01

Winter Sun
type: MusicAlbum
date published: 2020-03-07

Winter Sun
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date published: 2020-05-01

City Garden
type: MusicAlbum
date published: 2021-03-07
track: City Garden
track: Marie

City Garden
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date published: 2021-05-07

City Garden
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date published: 2021-06-04

Living Room
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date published: 2021-09-10

Indigo
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date published: 2021-11-05
track: From a Mother to a Child
track: Nature
track: What a Wonderful World