Isaac Galán
type: MusicGroup
genre: classical piano
genre: opera
popularity: 2
followers: 140
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4229a3951e68ef0824529f30489fe07a4d6fa25e8adcc1cdcbda7b8a7e41d659
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f5b61fe0-91df-4616-861b-1714e3c71d61.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f5b61fe0-91df-4616-861b-1714e3c71d61.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f5b61fe0-91df-4616-861b-1714e3c71d61
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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 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 0x4229a3951e68ef0824529f30489fe07a4d6fa25e8adcc1cdcbda7b8a7e41d659. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5b61fe0-91df-4616-861b-1714e3c71d61.json and https://artists.proofprofile.net/proofs/artist/f5b61fe0-91df-4616-861b-1714e3c71d61.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
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album: ¿qué Esperabas?
  type: MusicAlbum
  date published: 2014-03-12
album: Ahora Que Voy a Salir
  type: MusicAlbum
  date published: 2014-06-25
album: Quiero Ser
  type: MusicAlbum
  date published: 2014-07-10
album: El Mundo Se Ha Vuelto Amarillo (feat. Aurora de Luna)
  type: MusicAlbum
  date published: 2014-08-25
album: Gritaré
  type: MusicAlbum
  date published: 2018-11-30
album: Por Tí
  type: MusicAlbum
  date published: 2019-01-18
album: Cuando Te Vea
  type: MusicAlbum
  date published: 2020-05-11
album: Te Canto
  type: MusicAlbum
  date published: 2022-05-06
album: Quiero Ser Tu Bachata
  type: MusicAlbum
  date published: 2023-01-27
album: Toma Que Toma
  type: MusicAlbum
  date published: 2023-12-15
album: 10 Aniversario
  type: MusicAlbum
  date published: 2024-02-02
album: Me Voy Corriendo
  type: MusicAlbum
  date published: 2024-08-02
track: La traviata / Act 1: “Dell’invito trascorsa è già l’ora”
  type: MusicRecording
  duration: PT4M50S
  duration ms: 290066
  explicit: false
  by artist: Giuseppe Verdi
  by artist: Francesco Piave
  by artist: Marina Rebeka
  by artist: Charles Castronovo
  by artist: Elisabeth Sergeeva
  by artist: Gideon Poppe
  by artist: Isaac Galán
  by artist: Rihards Mačanovskis
  by artist: Krišjānis Norvelis
  by artist: Michael Balke
  by artist: Latvian Festival Orchestra
  in album: La Traviata
    type: MusicAlbum
    date published: 2019-11-01
  genre: classical
  genre: opera
  isrc code: QZDSS1900027
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T00:00:49+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x740349cc55a26f9761b864d029d10188987039ffb69c610b4960ec4e65233880
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960330
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960330
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDSS1900027
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T00:58:21Z
  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 0x740349cc55a26f9761b864d029d10188987039ffb69c610b4960ec4e65233880. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/QZDSS1900027.
    date published: 2026-07-31T00:58:21Z
  audio: La traviata / Act 1: “Dell’invito trascorsa è già l’ora”
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 107.421
    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: 0.384
    additional property: Energy
      type: PropertyValue
      value: 0.282
    additional property: Speechiness
      type: PropertyValue
      value: 0.076
    additional property: Acousticness
      type: PropertyValue
      value: 0.888
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.312
    additional property: Loudness (dB)
      type: PropertyValue
      value: -17.548
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: La traviata / Act 1: “Libiamo ne’lieti calici”
  type: MusicRecording
  duration: PT2M52S
  duration ms: 172960
  explicit: false
  by artist: Giuseppe Verdi
  by artist: Francesco Piave
  by artist: Marina Rebeka
  by artist: Charles Castronovo
  by artist: Elisabeth Sergeeva
  by artist: Gideon Poppe
  by artist: Isaac Galán
  by artist: Rihards Mačanovskis
  by artist: Krišjānis Norvelis
  by artist: Michael Balke
  by artist: Latvian Festival Orchestra
  in album: La Traviata
    type: MusicAlbum
    date published: 2019-11-01
  genre: classical
  genre: opera
  isrc code: QZDSS1900028
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T22:00:17+00:00
  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: La traviata / Act 1: “Libiamo ne’lieti calici”
track: La traviata / Act 1: “Che è ciò?”
track: La traviata / Act 2: “Avrem lieta di maschere la notte”
track: La traviata / Act 2: “Noi siamo zingarelle”

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x0d8445146d9271bff926ffc9b8bb48a256e9da6d8612870197beac76b8bdd40d

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 960321

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960321

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDSS1900028

OTSTimestamp
type: PropertyValue
value: 2026-07-30T22:27:30Z

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 0x0d8445146d9271bff926ffc9b8bb48a256e9da6d8612870197beac76b8bdd40d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZDSS1900028.
date published: 2026-07-30T22:27:30Z

La traviata / Act 1: “Libiamo ne’lieti calici”
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 124.942
additional property: Musical Key
  type: PropertyValue
  value: 10
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.419
additional property: Energy
  type: PropertyValue
  value: 0.29
additional property: Speechiness
  type: PropertyValue
  value: 0.054
additional property: Acousticness
  type: PropertyValue
  value: 0.953
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.445
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.278
additional property: Loudness (dB)
  type: PropertyValue
  value: -15.99
additional property: Key Name
  type: PropertyValue
  value: Bb
additional property: Mode Name
  type: PropertyValue
  value: Major

La traviata / Act 1: “Che è ciò?”
type: MusicRecording
duration: PT2M16S
duration ms: 136026
explicit: false
by artist: Giuseppe Verdi
by artist: Francesco Piave
by artist: Marina Rebeka
by artist: Charles Castronovo
by artist: Elisabeth Sergeeva
by artist: Gideon Poppe
by artist: Isaac Galán
by artist: Rihards Mačanovskis
by artist: Krišjānis Norvelis
by artist: Michael Balke
by artist: Latvian Festival Orchestra
in album: La Traviata
  type: MusicAlbum
  date published: 2019-11-01
genre: classical
genre: opera
isrc code: QZDSS1900029
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T22:55:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8b94e87088448932203f7a107a98abd99e3f692049075caac743c250c5c0f4c7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960478
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960478
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDSS1900029
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T23:30:38Z
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 0x8b94e87088448932203f7a107a98abd99e3f692049075caac743c250c5c0f4c7. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZDSS1900029.
  date published: 2026-07-31T23:30:38Z
audio: La traviata / Act 1: “Che è ciò?”
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.398
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.454
  additional property: Energy
    type: PropertyValue
    value: 0.126
  additional property: Speechiness
    type: PropertyValue
    value: 0.072
  additional property: Acousticness
    type: PropertyValue
    value: 0.983
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.295
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.567
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.046
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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La traviata / Act 2: “Avrem lieta di maschere la notte”
type: MusicRecording
duration: PT1M1S
duration ms: 61453
explicit: false
by artist: Giuseppe Verdi
by artist: Francesco Piave
by artist: Elisabeth Sergeeva
by artist: Isaac Galán
by artist: Krišjānis Norvelis
by artist: Michael Balke
by artist: Latvian Festival Orchestra
in album: La Traviata
  type: MusicAlbum
  date published: 2019-11-01
genre: classical
genre: opera
isrc code: QZDSS1900048
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T12:43:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc93535b10461da793853423099ff5ae1e716c6ccbd0938b3d2ba067de43fb50b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960403
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960403
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDSS1900048
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T13:04:34Z
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 0xc93535b10461da793853423099ff5ae1e716c6ccbd0938b3d2ba067de43fb50b. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZDSS1900048.
  date published: 2026-07-31T13:04:34Z
audio: La traviata / Act 2: “Avrem lieta di maschere la notte”
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 168.211
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.396
  additional property: Energy
    type: PropertyValue
    value: 0.301
  additional property: Speechiness
    type: PropertyValue
    value: 0.052
  additional property: Acousticness
    type: PropertyValue
    value: 0.924
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.617
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.623
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.168
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

La traviata / Act 2: “Noi siamo zingarelle”
type: MusicRecording
duration: PT2M41S
duration ms: 161560
explicit: false
by artist: Giuseppe Verdi
by artist: Francesco Piave
by artist: Elisabeth Sergeeva
by artist: Isaac Galán
by artist: Krišjānis Norvelis
by artist: Michael Balke
by artist: Latvian Festival Orchestra
in album: La Traviata
  type: MusicAlbum
  date published: 2019-11-01
genre: classical
genre: opera
isrc code: QZDSS1900049
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T08:21:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5b5f16046e2a9b1be24ea682a56c05cdb27028a18ae25195b4eb3bccbb69cf74
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960370
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960370
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDSS1900049
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:38:45Z
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 0x5b5f16046e2a9b1be24ea682a56c05cdb27028a18ae25195b4eb3bccbb69cf74. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZDSS1900049.
  date published: 2026-07-31T08:38:45Z
audio: La traviata / Act 2: “Noi siamo zingarelle”
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 137.337
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.596
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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