Roberto Gerhard
type: MusicGroup
description: Robert Gerhard i Ottenwaelder (; 25 September 1896 – 5 January 1970) was a Spanish and British composer, musical scholar, and writer, generally known outside his native region of Catalonia as Roberto
popularity: 7
followers: 1248
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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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album: Gerhard: The Plague
  type: MusicAlbum
  date published: 1974-11-02
album: Gerhard: Libra; Gemini; Leo
  type: MusicAlbum
  date published: 1977
album: Gerhard: Symphony No. 3, Epithlamion & Piano Concerto
  type: MusicAlbum
  date published: 1979-01-01
album: Gerhard: Symphony No. 3, Epithlamion & Piano Concerto
  type: MusicAlbum
  date published: 1979-01-01
album: Roberto Gerhard, Schahrazada, Cancionero de Pedrell
  type: MusicAlbum
  date published: 1988-01-01
album: Gerhard: Don Quixote, Pedrelliana, Albada & Interludi I Dansa
  type: MusicAlbum
  date published: 1992-01-01
album: Gerhard: Cancionero de Pedrell
  type: MusicAlbum
  date published: 1994
album: Robert Gerhard: Symphonies Nos. 1 & 3
  type: MusicAlbum
  date published: 1995-01-01
album: Gerhard: The Plague - Epithalamion
  type: MusicAlbum
  date published: 1996-01-01
album: Gerhard: Symphony No. 4 and Metamorphoses
  type: MusicAlbum
  date published: 1996-01-01
album: Gerhard, Vol.1: The Plague - Epithalamion
  type: MusicAlbum
  date published: 1996-01-01
album: Gerhard: Piano Music (Complete)
  type: MusicAlbum
  date published: 1996-02-21
album: Gerhard: Piano Music (Complete)
  type: MusicAlbum
  date published: 1996-02-21
album: Gerhard: L'Alta Naixença del Rei en Jaume - Sis Cançons populars Catalanes - Cancionero de Pedrell & Dues Sardanes
  type: MusicAlbum
  date published: 1997-01-01
album: Gerhard: Pandora - Soirées de Barcelone & Ariel
  type: MusicAlbum
  date published: 1997-01-01
album: Gerhard: La Dueña
  type: MusicAlbum
  date published: 1997-03-01
album: Gerhard: Piano Trio, Cello Sonata, Concierto para Ocho & Libra
  type: MusicAlbum
  date published: 1997-05-27
album: Gerhard: Piano Trio, Cello Sonata, Concierto para Ocho & Libra
  type: MusicAlbum
  date published: 1997-05-27
album: Gerhard: Symphony No. 3 / Epithalamion / Piano Concerto
  type: MusicAlbum
  date published: 1997-09-01
album: Gerhard: Symphony No. 1 & Violin Concerto
  type: MusicAlbum
  date published: 1998-02-01
album: Gerhard: Symphony No. 1 & Violin Concerto
  type: MusicAlbum
  date published: 1998-02-01
album: Gerhard: Symphony No. 1 / Violin Concerto
  type: MusicAlbum
  date published: 1998-02-01
album: Gerhard: Pedrell Symphony & Harpsichord Concerto
  type: MusicAlbum
  date published: 1998-09-01
album: Gerhard: Pedrell Symphony & Harpsichord Concerto
  type: MusicAlbum
  date published: 1998-09-01
album: Gerhard: Concerto for Harpsichord, String Orchestra and Percussion - Nonet & Concerto for Piano and Strings
  type: MusicAlbum
  date published: 1999-01-01
album: Gerhard, R.: Concerto for Orchestra / Symphony No. 2
  type: MusicAlbum
  date published: 1999-02-01
album: Gerhard, R.: Concerto for Orchestra / Symphony No. 2
  type: MusicAlbum
  date published: 1999-02-01
album: Gerhard: Symphony No. 2 & Concerto for Orchestra
  type: MusicAlbum
  date published: 1999-02-01
album: Gerhard: Symphony No. 2 & Concerto for Orchestra
  type: MusicAlbum
  date published: 1999-02-01
album: Gerhard: Symphony No. 4 & Pandora Suite
  type: MusicAlbum
  date published: 1999-10-01
album: Gerhard: Nonet, Hymnody & Leo
  type: MusicAlbum
  date published: 2003-11-02
album: Gerhard: Nonet, Hymnody & Leo
  type: MusicAlbum
  date published: 2003-11-02
album: Roberto Gerhard : Piano Trio, Cello Sonata ,Concierto Para Ocho, Libra
  type: MusicAlbum
  date published: 2007
album: Gerhard: Symphony No. 4 "New York" & Violin Concerto
  type: MusicAlbum
  date published: 2008-01-01
album: Gerhard: Symphony No. 4 & Violin Concerto
  type: MusicAlbum
  date published: 2008-01-01
album: Gerhard: Symphony No. 4 & Violin Concerto
  type: MusicAlbum
  date published: 2008-01-01
album: Gerhard: Violin Concerto
  type: MusicAlbum
  date published: 2010-11-01
album: Portraits & Horoscopes
  type: MusicAlbum
  date published: 2012-07-11
album: Soirées De Barcelone
  type: MusicAlbum
  date published: 2012-07-11
album: Gerhard: Complete String Quartets & Chaconne
  type: MusicAlbum
  date published: 2013-01-15
album: Gerhard: Complete String Quartets & Chaconne
  type: MusicAlbum
  date published: 2013-01-21
album: Gerhard, R.: Chamber Music
  type: MusicAlbum
  date published: 2013-04-01
album: Gerhard, R.: String Quartets Nos. 1 and 2
  type: MusicAlbum
  date published: 2013-04-01
album: Gerhard, R.: Chamber Music
  type: MusicAlbum
  date published: 2013-04-01
album: Gerhard: Homenaje a Pedrell - Harpsichord Concerto
  type: MusicAlbum
  date published: 2013-09-01
album: Gerhard: La Dueña (The Duenna)
  type: MusicAlbum
  date published: 2013-09-01
album: Gerhard: Symphony No. 4, "New York" & Pandora Suite
  type: MusicAlbum
  date published: 2013-09-01
album: Gerhard: Homenaje a Pedrell - Harpsichord Concerto
  type: MusicAlbum
  date published: 2013-09-01
album: Gerhard: Symphony No. 4, "New York" & Pandora Suite
  type: MusicAlbum
  date published: 2013-09-01
album: Gerhard: The Duenna (Live) [First Performance & Violin Concerto, UK Premiere]
  type: MusicAlbum
  date published: 2014
album: Gerhard: Leo, Gemini, Libra & Concerto for 8
  type: MusicAlbum
  date published: 2014-01-07
album: Robert Gerhard - Ballets (For Two Pianos)
  type: MusicAlbum
  date published: 2019-12-31
album: Robert Gerhard: Vocal Folksongs
  type: MusicAlbum
  date published: 2021-06-25
album: Roberto Gerhard: La noche de San Juan
  type: MusicAlbum
  date published: 2021-10-08
album: Robert Gerhard: Orchestral Folksongs
album: Roberto Gerhard: Nonet (Live)
album: Gerhard: Alegrías Suite - IV. Jaleo
album: Gerhard: Don Quixote - I. A Wayside Inn
album: Gerhard: Don Quixote, Alegrías & Pedrelliana
track: 2 Apunts (2 Sketches): No. 1. —

Robert Gerhard: Orchestral Folksongs
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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track: Cancionero de Pedrell: No. 2, La mal maridada
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T12:24:41Z
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track: Cancionero de Pedrell: No. 4, Soledad
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:20:19Z

Cancionero de Pedrell: No. 4, Soledad
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Roberto Gerhard: Nonet (Live)
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date published: 2024-06-26

Gerhard: Alegrías Suite - IV. Jaleo
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date published: 2024-06-28

Gerhard: Don Quixote - I. A Wayside Inn
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date published: 2024-07-19

Gerhard: Don Quixote, Alegrías & Pedrelliana
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    date published: 2026-07-31T02:19:15Z
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track: Alegrías: Ib. Jácara
  type: MusicRecording
  duration: PT2M20S
  duration ms: 140106
  explicit: false
  by artist: Roberto Gerhard
  in album: Gerhard: Don Quixote, Alegrías & Pedrelliana
    type: MusicAlbum
    date published: 2024-08-02
  isrc code: GBLWD2404302
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T10:50:20+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x814a334a39c0a27856236d045957261f2bb25716f3013124006358c5e5ccd174
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960397
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960397
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2404302
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T12:24:41Z
  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 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
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814a334a39c0a27856236d045957261f2bb25716f3013124006358c5e5ccd174. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBLWD2404302.
    date published: 2026-07-31T12:24:41Z
  audio: Alegrías: Ib. Jácara
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 123.027
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.386
    additional property: Energy
      type: PropertyValue
      value: 0.044
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.921
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.878
    additional property: Liveness
      type: PropertyValue
      value: 0.309
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.169
    additional property: Loudness (dB)
      type: PropertyValue
      value: -29.479
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Alegrías: IIa. Farruca
  type: MusicRecording
  duration: PT5M7S
  duration ms: 307586
  explicit: false
  by artist: Roberto Gerhard
  in album: Gerhard: Don Quixote, Alegrías & Pedrelliana
    type: MusicAlbum
    date published: 2024-08-02
  isrc code: GBLWD2404303
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T13:08:36+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd4550d54019c481989e025339d606f4a816980067e41d14ce19ec11357f84812
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2404303
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Alegrías: IIa. Farruca
track: Don Quixote, Scene 1 "Don Quixote's Room": Andante maestoso

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:20:19Z

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 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4550d54019c481989e025339d606f4a816980067e41d14ce19ec11357f84812. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBLWD2404303.
date published: 2026-07-08T03:20:19Z

Alegrías: IIa. Farruca
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 133.469
additional property: Musical Key
  type: PropertyValue
  value: 9
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.404
additional property: Energy
  type: PropertyValue
  value: 0.077
additional property: Speechiness
  type: PropertyValue
  value: 0.042
additional property: Acousticness
  type: PropertyValue
  value: 0.916
additional property: Instrumentalness
  type: PropertyValue
  value: 0.926
additional property: Liveness
  type: PropertyValue
  value: 0.117
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.126
additional property: Loudness (dB)
  type: PropertyValue
  value: -25.421
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
  value: Major

Don Quixote, Scene 1 "Don Quixote's Room": Andante maestoso
type: MusicRecording
duration: PT0M53S
duration ms: 53586
explicit: false
by artist: Roberto Gerhard
in album: Gerhard: Don Quixote, Alegrías & Pedrelliana
  type: MusicAlbum
  date published: 2024-08-02
isrc code: GBLWD2404307
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T23:00:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4aa05af7260355a93d683da7687d525e54f259edc2967a914e0673e07887310b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2404307
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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 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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa05af7260355a93d683da7687d525e54f259edc2967a914e0673e07887310b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLWD2404307.
  date published: 2026-07-08T03:22:41Z
audio: Don Quixote, Scene 1 "Don Quixote's Room": Andante maestoso
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.08
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.137
  additional property: Energy
    type: PropertyValue
    value: 0.144
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.936
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.966
  additional property: Liveness
    type: PropertyValue
    value: 0.425
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.097
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.872
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

2 Apunts (2 Sketches): No. 1. —
type: MusicRecording
duration: PT1M19S
duration ms: 79306
explicit: false
by artist: Roberto Gerhard
by artist: Jordi Masó
in album: Maso, Jordi: Catalan Piano Album (The)
  type: MusicAlbum
  date published: 2007-10-30
popularity: 1
isrc code: HKI190739718
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T14:50:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x09eea8c5b62eee4a967309a6d4292666653d0e4d7c1e107d2730ed331386f63a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960418
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960418
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190739718
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:20:15Z
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 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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09eea8c5b62eee4a967309a6d4292666653d0e4d7c1e107d2730ed331386f63a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/HKI190739718.
  date published: 2026-07-31T15:20:15Z
audio: 2 Apunts (2 Sketches): No. 1. —
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.501
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.388
  additional property: Energy
    type: PropertyValue
    value: 0.006
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.938
  additional property: Liveness
    type: PropertyValue
    value: 0.083
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.028
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.071
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor