Apparat Organ Quartet
type: MusicGroup
description: Apparat Organ Quartet was founded in 1999 in Reykjavík, Iceland. It is a band that originally included the musicians Hörður Bragason, Músikvatur, Úlfur Eldjárn and Jóhann Jóhannsson. They were soon jo
popularity: 16
followers: 4176
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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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album: Apparat Organ Quartet
  type: MusicAlbum
  date published: 2002
album: Apparat Organ Quartet
  type: MusicAlbum
  date published: 2002
album: Apparat Organ Quartet
  type: MusicAlbum
  date published: 2002
album: Apparat Organ Quartet
  type: MusicAlbum
  date published: 2002-01-01
album: Apparat Organ Quartet
  type: MusicAlbum
  date published: 2002-01-01
album: Apparat Organ Quartet
  type: MusicAlbum
  date published: 2002-01-01
  track: Rómantíka
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
      type: PropertyValue
      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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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad93b35a8b2aa45193da815b278656c3b27d68a221e408437f0bbaa48736fa71. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKMFA1100501.
      date published: 2026-07-04T10:04:33Z
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        type: PropertyValue
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      additional property: Danceability
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      additional property: Energy
        type: PropertyValue
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      additional property: Speechiness
        type: PropertyValue
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      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
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      additional property: Valence (Positivity)
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  track: Stereo Rock & Roll
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    by artist: Apparat Organ Quartet
    in album: Apparat Organ Quartet
      type: MusicAlbum
      date published: 2002-01-01
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    additional property: OTSTimestamp
      type: PropertyValue
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    additional property: OTSVerifyInstructions
      type: PropertyValue
      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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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b61cd6d3a2eb39a9711490e3232c87d37853e35908b9b7fc4980a5156ad0ba. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKMFA1100506.
      date published: 2026-07-17T15:33:28Z
    audio: Stereo Rock & Roll
      type: AudioObject
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        type: PropertyValue
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      additional property: Mode (Major/Minor)
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        type: PropertyValue
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        type: PropertyValue
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      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Pólýfónía
album: Konami
album: 123 Forever
album: Pólýfónía Remixes
album: Alfa Partý

Speechiness
type: PropertyValue
value: 0.027

Acousticness
type: PropertyValue
value: 0.047

Instrumentalness
type: PropertyValue
value: 0.058

Liveness
type: PropertyValue
value: 0.073

Valence (Positivity)
type: PropertyValue
value: 0.325

Loudness (dB)
type: PropertyValue
value: -5.087

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

Apparat Organ Quartet
type: MusicAlbum
date published: 2005-01-05

Apparat Organ Quartet
type: MusicAlbum
date published: 2005-04-30

Pólýfónía
type: MusicAlbum
date published: 2010-01-01
track: Konami
  type: MusicRecording
  duration: PT5M24S
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  by artist: Apparat Organ Quartet
  in album: Pólýfónía
    type: MusicAlbum
    date published: 2010-01-01
  isrc code: ISU111000403
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  additional property: CopyrightStatus
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T21:08:39Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    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
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2563fb8a716eab38f0f198f8c74ef91ed3972d3521a3f4459e95f4b954b5846. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ISU111000403.
    date published: 2026-07-19T21:08:39Z
  audio: Konami
    type: AudioObject
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      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.499
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
      value: 0.035
    additional property: Acousticness
      type: PropertyValue
      value: 0.015
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.021
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.513
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
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track: Síríus Alfa
  type: MusicRecording
  duration: PT5M9S
  duration ms: 309800
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  by artist: Apparat Organ Quartet
  in album: Pólýfónía
    type: MusicAlbum
    date published: 2010-01-01
  isrc code: ISU111000407
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  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    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
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69f3433133915734c0d14e8f7f0dc66f67dd6bbda07524a00189235c25486e5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ISU111000407.
    date published: 2026-07-06T01:26:17Z
  audio: Síríus Alfa
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    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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      value: -8.973
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
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track: 123 Forever
  type: MusicRecording
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  by artist: Apparat Organ Quartet
  in album: Pólýfónía
    type: MusicAlbum
    date published: 2010-01-01
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  additional property: CopyrightID
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    type: PropertyValue
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ISU111000408
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: 123 Forever

OTSTimestamp
type: PropertyValue
value: 2026-07-18T19:27:02Z

OTSVerifyInstructions
type: PropertyValue
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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9bcd9bc682f28cc199fc01b06ecb821597230887cb56e840bf260746b5f290. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ISU111000408.
date published: 2026-07-18T19:27:02Z

123 Forever
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 81.545
additional property: Musical Key
  type: PropertyValue
  value: 10
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.468
additional property: Energy
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  value: 0.54
additional property: Speechiness
  type: PropertyValue
  value: 0.046
additional property: Acousticness
  type: PropertyValue
  value: 0.014
additional property: Instrumentalness
  type: PropertyValue
  value: 0.589
additional property: Liveness
  type: PropertyValue
  value: 0.059
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.324
additional property: Loudness (dB)
  type: PropertyValue
  value: -7.671
additional property: Key Name
  type: PropertyValue
  value: Bb
additional property: Mode Name
  type: PropertyValue
  value: Major

Pólýfónía
type: MusicAlbum
date published: 2010-01-01

Pólýfónía
type: MusicAlbum
date published: 2010-12-09

Konami
type: MusicAlbum
date published: 2011-05-28

Konami
type: MusicAlbum
date published: 2011-05-28

Konami
type: MusicAlbum
date published: 2011-05-28

Pólýfónía
type: MusicAlbum
date published: 2011-09-05

Pólýfónía
type: MusicAlbum
date published: 2011-09-05

Pólýfónía
type: MusicAlbum
date published: 2011-09-05

Pólýfónía
type: MusicAlbum
date published: 2011-09-05

Pólýfónía
type: MusicAlbum
date published: 2011-09-05

123 Forever
type: MusicAlbum
date published: 2011-10-03

123 Forever
type: MusicAlbum
date published: 2011-10-03

Pólýfónía Remixes
type: MusicAlbum
date published: 2012-02-27

Pólýfónía Remixes
type: MusicAlbum
date published: 2012-02-27

Pólýfónía Remixes
type: MusicAlbum
date published: 2012-02-27

Pólýfónía
type: MusicAlbum
date published: 2013-03-12

123 Forever
type: MusicAlbum
date published: 2014-02-05

Alfa Partý
type: MusicAlbum
date published: 2019-09-09