Jan Hammarlund
type: MusicGroup
genre: swedish ballads
popularity: 14
followers: 1727
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-15T05:25:34Z
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album: Befriade från skolan
  type: MusicAlbum
  date published: 1972-11-01
album: När bandets slutar spela
  type: MusicAlbum
  date published: 1973-09-28
album: När bandet slutar spela
  type: MusicAlbum
  date published: 1973-09-28
album: När bandet slutar spela
  type: MusicAlbum
  date published: 1973-09-28
album: När Bandets Slutar Spela
  type: MusicAlbum
  date published: 1973-09-28
album: När bandets slutar spela
  type: MusicAlbum
  date published: 1973-09-28
album: Igår, idag, imorgon
  type: MusicAlbum
  date published: 1976-11-29
album: Landet jag är van vid
  type: MusicAlbum
  date published: 1976-11-29
album: Innan tåget är på väg
  type: MusicAlbum
  date published: 1978-03-17
album: Innan tåget är på väg
  type: MusicAlbum
  date published: 1978-03-17
album: Innan tåget är på väg
  type: MusicAlbum
  date published: 1978-03-17
album: Ett rop som stiger
  type: MusicAlbum
  date published: 1979-11-29
album: NÅGRA HÄR, NÅGRA DÄR...
  type: MusicAlbum
  date published: 1981-03-04
album: Kärlek och sång
  type: MusicAlbum
  date published: 1981-11-29
album: Järnvägsräls (Live)
  type: MusicAlbum
  date published: 1982-09-15
album: Järnvägsräls (Live)
  type: MusicAlbum
  date published: 1982-09-15
album: Järnvägsräls (Live)
  type: MusicAlbum
  date published: 1982-09-15
album: Järnvägsräls (Live)
  type: MusicAlbum
  date published: 1982-09-15
album: Järnvägsräls
  type: MusicAlbum
  date published: 1982-09-15
album: Järnvägsräls (Live)
  type: MusicAlbum
  date published: 1982-09-15
album: I still want u
  type: MusicAlbum
  date published: 1990
album: Min musik
  type: MusicAlbum
  date published: 1990-01-01
album: Min Musik
  type: MusicAlbum
  date published: 1990-02-14
album: 1972-92
  type: MusicAlbum
  date published: 1992
album: 1972-92
  type: MusicAlbum
  date published: 1992
album: 1972-92
  type: MusicAlbum
  date published: 1992
album: 1972-92
  type: MusicAlbum
  date published: 1992
album: 1972-92
  type: MusicAlbum
  date published: 1992-01-01
  track: Jag vill leva i Europa
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    genre: swedish ballads
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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
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-17T02:28:59Z
    audio: Jag vill leva i Europa
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album: Syd - 14 Sånger Från Latinamerika
album: Syd - 14 sånger från Latinamerika
album: Syd
album: Tvärs över går'n
album: Tvärs Över Går´n
album: Om trädgårdsbevattning - Jan Hammarlund sjunger Brecht
album: Brecht Songs-Om Trädgårdsbevattning
album: Alby-Bilbao
album: Norte Al Sur
album: Norte al Sur
album: Grässtrån och gatsten
album: Grässtrån Och Gatsten
album: Röda linjen
album: Röda Linjen
album: Löst folk
album: Progglådan Box C: Folkprogg & Sjungande låtskrivare (Live)
album: Löst Folk
album: UNCOVERED Malvina Reynolds sung by Jan Hammarlund
album: Uncovered
album: Down and out in Vienna (Celebrating Franz Schubert)
album: Vid kajen
album: Vid Kajen
album: När soldaterna kom till vår stad - En visa om Sundsvallsstrejken 1879
album: När Soldaterna Kom Till Vår Stad
album: Ja Visst Gör Det Ont
album: Canzone su Sacco e Vanzetti
album: Down and Out in Vienna
album: L'oiseau Phénix
album: Te vi por vez primera
album: Jan Hammarlund Sings Violeta Parra
album: Jan Hammarlund singt Violeta Parra
album: Pudiendo el Barco Zarpar
album: El Equilibrista
album: Den evige soldaten
album: Victor Jara
album: Flykten från Saint-Barthélemy

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Syd - 14 Sånger Från Latinamerika
type: MusicAlbum
date published: 1994

Syd - 14 sånger från Latinamerika
type: MusicAlbum
date published: 1994-01-01

Syd
type: MusicAlbum
date published: 1994-08-17

Syd
type: MusicAlbum
date published: 1994-08-17

Tvärs över går'n
type: MusicAlbum
date published: 1995-01-01

Tvärs Över Går´n
type: MusicAlbum
date published: 1995-08-16

Om trädgårdsbevattning - Jan Hammarlund sjunger Brecht
type: MusicAlbum
date published: 1996-01-01

Brecht Songs-Om Trädgårdsbevattning
type: MusicAlbum
date published: 1996-02-28

Alby-Bilbao
type: MusicAlbum
date published: 2000

Alby-Bilbao
type: MusicAlbum
date published: 2000

Alby-Bilbao
type: MusicAlbum
date published: 2000-06-13

Alby-Bilbao
type: MusicAlbum
date published: 2000-06-13

Norte Al Sur
type: MusicAlbum
date published: 2001

Norte al Sur
type: MusicAlbum
date published: 2001-01-01

Norte Al Sur
type: MusicAlbum
date published: 2001-01-10

Grässtrån och gatsten
type: MusicAlbum
date published: 2002-01-01

Grässtrån Och Gatsten
type: MusicAlbum
date published: 2002-06-11

Röda linjen
type: MusicAlbum
date published: 2006-01-01

Röda Linjen
type: MusicAlbum
date published: 2007-01-01

Röda Linjen
type: MusicAlbum
date published: 2007-01-18

Löst folk
type: MusicAlbum
date published: 2013-01-01

Progglådan Box C: Folkprogg & Sjungande låtskrivare (Live)
type: MusicAlbum
date published: 2013-01-01

Löst folk
type: MusicAlbum
date published: 2013-08-21

Löst Folk
type: MusicAlbum
date published: 2013-08-21

UNCOVERED Malvina Reynolds sung by Jan Hammarlund
type: MusicAlbum
date published: 2014-01-01

Uncovered
type: MusicAlbum
date published: 2014-08-13

Uncovered
type: MusicAlbum
date published: 2014-08-13

Down and out in Vienna (Celebrating Franz Schubert)
type: MusicAlbum
date published: 2015

Vid kajen
type: MusicAlbum
date published: 2016-01-01

Vid Kajen
type: MusicAlbum
date published: 2016-05-04

Vid Kajen
type: MusicAlbum
date published: 2016-05-04

Vid Kajen
type: MusicAlbum
date published: 2016-05-04

Röda Linjen
type: MusicAlbum
date published: 2017-02-24

När soldaterna kom till vår stad - En visa om Sundsvallsstrejken 1879
type: MusicAlbum
date published: 2019

När Soldaterna Kom Till Vår Stad
type: MusicAlbum
date published: 2019-11-01

Ja Visst Gör Det Ont
type: MusicAlbum
date published: 2020-06-05

Canzone su Sacco e Vanzetti
type: MusicAlbum
date published: 2020-07-24

Down and Out in Vienna
type: MusicAlbum
date published: 2021-04-16

L'oiseau Phénix
type: MusicAlbum
date published: 2021-11-16

Te vi por vez primera
type: MusicAlbum
date published: 2022-02-24

Jan Hammarlund Sings Violeta Parra
type: MusicAlbum
date published: 2022-05-18

Jan Hammarlund singt Violeta Parra
type: MusicAlbum
date published: 2022-06-01

Pudiendo el Barco Zarpar
type: MusicAlbum
date published: 2022-06-23

El Equilibrista
type: MusicAlbum
date published: 2022-10-13

Den evige soldaten
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date published: 2023-07-14

Victor Jara
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date published: 2023-09-28

Flykten från Saint-Barthélemy
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date published: 2025-03-12
track: Flykten från Saint-Barthélemy
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  genre: swedish ballads
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-18T07:54:29Z
  audio: Flykten från Saint-Barthélemy
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Min regnbågsfana / Varför vi sjunger
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-05T19:27:56Z
  audio: Min regnbågsfana
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Den gamla vanliga historien
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-05T10:01:46Z
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.192
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major