Roberto Díaz
type: MusicGroup
genre: chamber music
description: Roberto Díaz may refer to: Roberto Díaz (footballer) Roberto Díaz (golfer) Roberto Díaz (violist) Roberto Díaz Herrera, Panamanian colonel
popularity: 10
followers: 672
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album: Memorial
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  date published: 2016-03-04
album: (1929), Vol. 1
  type: MusicAlbum
  date published: 2014-09-23
album: Orquestas Inolvidables, Vol. 1
  type: MusicAlbum
  date published: 2016-07-14
album: Jacob Druckman
  type: MusicAlbum
  date published: 2001-01-01
album: Para recordarlo (1948-1957)
  type: MusicAlbum
  date published: 2018-01-03
album: A Guided Tour of the Romantic Era, Vol. 9
  type: MusicAlbum
  date published: 2013-03-12
  track: Orphee aux enfers (Orpheus in the Underworld): Overture
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    by artist: Slovak Radio Symphony Orchestra
    by artist: Martin Sieghart
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    genre: classical
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    genre: french-romanticism
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:22:41Z
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album: Historia de un Violín
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album: The History of Tango - The Great Violin of Tango / Elvino Vardaro - Recordings 1928-1943
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album: The Essentials: Sonatas
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    by artist: Ronald Van Spaendonck
    by artist: Alexandre Tharaud
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    popularity: 14
    genre: classical
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    subject of: OpenTimestamps Proof of Existence
    audio: Clarinet Sonata, FP 184: I. Allegro tristemente: Allegretto - tres calme - tempo allegretto
album: Higdon: All Things Majestic, Viola Concerto & Oboe Concerto (Live)
album: A to Z of String Players
album: Vieuxtemps: Viola and Piano Music
album: Dolor inmenso
album: Tango Legends Vol 3: Classics
album: Tango Legends Vol. 10: Great Orchestras
album: Montavita
album: Music@Menlo Live, The Glorious Violin, Vol. 3
album: Porfirio Díaz y Su Orquesta Típica
album: The Essential Brahms
album: Cola e' paja (1930 - 1931)
album: A la Huancachina
album: Maldito tango
album: Brahms: Sonatas for Viola and Piano
album: Primrose: Viola Transcriptions
album: Les Amis: Debussy • Caplet
album: A Media Luz
album: Vol. 10 (1929-1930)
album: Vol. 13 (1931)
album: La Serenata (1930-1931)
album: Vol. 12 (1930-1931)
album: Vol. 9 (1929)
album: Adios Buenos Aires (1930 -1944)
album: Vol. 11 (1930)
album: Y Su Orquesta Típica
album: Maestros del Tango
album: (1927-1934)
album: Amor y celo (1929 - 1944)
album: Tango Federico - Federico's Selection of the World's Greatest Salon Tangos
album: Recuerdo
album: 1929-1944
album: Ofrenda Gaucha: Trasnochando
album: La Gran Venganza (Sing Along)
album: (1931-1934)
album: Música de Calesita (1926-1932)
album: De un Tiempo Que Pasó, Vol. 18

Viola Concerto: I. —
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duration ms: 554840
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by artist: Jennifer Higdon
by artist: Roberto Díaz
by artist: Nashville Symphony Orchestra
by artist: Giancarlo Guerrero
in album: Higdon: All Things Majestic, Viola Concerto & Oboe Concerto (Live)
  type: MusicAlbum
  date published: 2017-03-10
genre: 21st-century-classical
genre: contemporary-classical
genre: american-21st-century-classical
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T14:36:16Z
audio: Viola Concerto: I. —
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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 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

Viola Concerto: II. —
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duration: PT4M8S
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by artist: Roberto Díaz
by artist: Nashville Symphony Orchestra
by artist: Giancarlo Guerrero
in album: Higdon: All Things Majestic, Viola Concerto & Oboe Concerto (Live)
  type: MusicAlbum
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genre: 21st-century-classical
genre: contemporary-classical
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  date published: 2026-07-31T00:26:26Z
audio: Viola Concerto: II. —
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Viola Concerto: III. —
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duration: PT8M34S
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by artist: Roberto Díaz
by artist: Nashville Symphony Orchestra
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genre: 21st-century-classical
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  date published: 2026-08-01T00:10:46Z
audio: Viola Concerto: III. —
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Alma Tanguera
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duration: PT2M58S
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by artist: Francisco Canaro
by artist: Orquesta Francisco Canaro
by artist: Roberto Díaz
in album: A Media Luz
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  date published: 2026-07-30T09:57:33Z
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additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: BitcoinBlock
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additional property: OTSVerificationAPI
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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 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 0x2a0b81f335fb1e04f8d862142101b2799b1e3f89e95a510578be2ed7035ee016. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USB8U1611904.
date published: 2026-07-02T03:55:08Z

Clarinet Sonata, FP 184: I. Allegro tristemente: Allegretto - tres calme - tempo allegretto
type: AudioObject
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Energy
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additional property: Speechiness
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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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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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Higdon: All Things Majestic, Viola Concerto & Oboe Concerto (Live)
type: MusicAlbum
date published: 2017-03-10
track: All Things Majestic: II. String Lake
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  duration: PT7M6S
  duration ms: 426826
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  by artist: Nashville Symphony Orchestra
  by artist: Giancarlo Guerrero
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    type: MusicAlbum
    date published: 2017-03-10
  genre: 21st-century-classical
  genre: contemporary-classical
  genre: american-21st-century-classical
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  additional property: OTSVerificationAPI
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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
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29080af03953118779ad3cee0ab9f0beb3bfd00a48519ecd28037781da1727bd. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/HKI191618206.
    date published: 2026-07-07T16:07:00Z
  audio: All Things Majestic: II. String Lake
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track: Viola Concerto: I. —
track: Viola Concerto: II. —
track: Viola Concerto: III. —

A to Z of String Players
type: MusicAlbum
date published: 2000-01-01

Vieuxtemps: Viola and Piano Music
type: MusicAlbum
date published: 2003-01-11

Dolor inmenso
type: MusicAlbum
date published: 2017-04-15
track: El ventarron
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  duration ms: 193018
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  by artist: Luis Aranguiz
  by artist: Porfirio Díaz
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  additional property: OTSVerificationAPI
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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
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    date published: 2026-07-02T03:55:08Z
  audio: El ventarron
    type: AudioObject
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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    additional property: Acousticness
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    additional property: Valence (Positivity)
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Tango Legends Vol 3: Classics
type: MusicAlbum
date published: 2011-11-02
track: El Choclo
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  explicit: false
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  additional property: OTSVerificationAPI
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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
    type: DigitalDocument
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    date published: 2026-07-02T03:55:08Z
  audio: El Choclo
    type: AudioObject
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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Tango Legends Vol. 10: Great Orchestras
type: MusicAlbum
date published: 2011-12-01
track: Alma en Pena
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  duration ms: 195186
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  by artist: Juan Maglio Pacho
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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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    date published: 2026-07-08T03:53:27Z
  audio: Alma en Pena
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Montavita
type: MusicAlbum
date published: 2017-04-15

Music@Menlo Live, The Glorious Violin, Vol. 3
type: MusicAlbum
date published: 2017-12-21

Porfirio Díaz y Su Orquesta Típica
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date published: 1979-05-01
track: Viejo San Diego
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
  audio: Viejo San Diego
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    additional property: Mode (Major/Minor)
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The Essential Brahms
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date published: 2024-11-08

Cola e' paja (1930 - 1931)
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date published: 2016-10-13

A la Huancachina
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date published: 2017-04-14
track: Al pie del misti
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
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    additional property: Mode (Major/Minor)
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    additional property: Speechiness
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      value: 0.052
    additional property: Acousticness
      type: PropertyValue
      value: 0.989
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.558
    additional property: Liveness
      type: PropertyValue
      value: 0.428
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.648
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.034
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Civilizacion
  type: MusicRecording
  duration: PT3M30S
  duration ms: 210050
  explicit: false
  by artist: Orquesta Porfirio Díaz
  by artist: Pepe Aguirre
  by artist: Porfirio Díaz
  in album: A la Huancachina
    type: MusicAlbum
    date published: 2017-04-14
  isrc code: CA5KR1549581
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T13:19:17+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xcd47f28116a39e7b800dd896ce0e511023d2ab5cb17faa04c371d502223c8f8b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957124
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957124
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1549581
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:53:27Z
  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 0xcd47f28116a39e7b800dd896ce0e511023d2ab5cb17faa04c371d502223c8f8b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR1549581.
    date published: 2026-07-08T03:53:27Z
  audio: Civilizacion
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 106.514
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.423
    additional property: Energy
      type: PropertyValue
      value: 0.081
    additional property: Speechiness
      type: PropertyValue
      value: 0.379
    additional property: Acousticness
      type: PropertyValue
      value: 0.995
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.815
    additional property: Liveness
      type: PropertyValue
      value: 0.141
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.074
    additional property: Loudness (dB)
      type: PropertyValue
      value: -26.399
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major

Maldito tango
type: MusicAlbum
date published: 2018-03-09
track: Sin palabras
  type: MusicRecording
  duration: PT3M10S
  duration ms: 190729
  explicit: false
  by artist: Enrique Discépolo
  by artist: Libertad Lamarque
  by artist: Mariano Mores
  in album: Maldito tango
    type: MusicAlbum
    date published: 2018-03-09
  isrc code: CA5KR1715468
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T04:43:41+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xfdf981e8d5a4481908a0bb38dfb83025e26fdd428615375494e893137664e670
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957124
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957124
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1715468
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:53:27Z
  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 0xfdf981e8d5a4481908a0bb38dfb83025e26fdd428615375494e893137664e670. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR1715468.
    date published: 2026-07-08T03:53:27Z
  audio: Sin palabras
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 100.191
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 6
    additional property: Danceability
      type: PropertyValue
      value: 0.514
    additional property: Energy
      type: PropertyValue
      value: 0.142
    additional property: Speechiness
      type: PropertyValue
      value: 0.083
    additional property: Acousticness
      type: PropertyValue
      value: 0.974
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.142
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.277
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.903
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Yo soy María
  type: MusicRecording
  duration: PT2M38S
  duration ms: 158160
  explicit: false
  by artist: Alfredo Malerba
  by artist: J. C. Castillo
  by artist: Libertad Lamarque
  in album: Maldito tango
    type: MusicAlbum
    date published: 2018-03-09
  genre: tango
  isrc code: CA5KR1715469
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T10:36:54+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x46ae61a384e1a2981ea952518f9b5c95b84b9593c8560e1b45d644c9f9d95f93
  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/CA5KR1715469
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 0x46ae61a384e1a2981ea952518f9b5c95b84b9593c8560e1b45d644c9f9d95f93. 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/CA5KR1715469.
    date published: 2026-07-08T03:20:19Z
  audio: Yo soy María
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 104.96
    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: 0.437
    additional property: Energy
      type: PropertyValue
      value: 0.252
    additional property: Speechiness
      type: PropertyValue
      value: 0.056
    additional property: Acousticness
      type: PropertyValue
      value: 0.963
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.101
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.257
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.44
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major

Brahms: Sonatas for Viola and Piano
type: MusicAlbum
date published: 2010-04-27

Primrose: Viola Transcriptions
type: MusicAlbum
date published: 2006-07-25

Les Amis: Debussy • Caplet
type: MusicAlbum
date published: 2013-11-11
track: Petite suite, L. 65: I. En bateau
  type: MusicRecording
  duration: PT3M54S
  duration ms: 234813
  explicit: false
  by artist: Claude Debussy
  by artist: Elizabeth Hainen
  in album: Les Amis: Debussy • Caplet
    type: MusicAlbum
    date published: 2013-11-11
  genre: classical
  genre: impressionism
  genre: post-romantic-era
  isrc code: GBELX1304788
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-21T05:09:19+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5e839613a16a6ae443f9365aa07f6773b90d25ff61cc51895a17d95d86857f22
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956302
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956302
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBELX1304788
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  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 0x5e839613a16a6ae443f9365aa07f6773b90d25ff61cc51895a17d95d86857f22. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBELX1304788.
    date published: 2026-07-02T03:30:09Z
  audio: Petite suite, L. 65: I. En bateau
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 116.965
    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: 0.313
    additional property: Energy
      type: PropertyValue
      value: 0.029
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.992
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.921
    additional property: Liveness
      type: PropertyValue
      value: 0.092
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.039
    additional property: Loudness (dB)
      type: PropertyValue
      value: -30.99
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Petite suite, L. 65: III. Menuet
  type: MusicRecording
  duration: PT3M35S
  duration ms: 215813
  explicit: false
  by artist: Claude Debussy
  by artist: Elizabeth Hainen
  in album: Les Amis: Debussy • Caplet
    type: MusicAlbum
    date published: 2013-11-11
  genre: classical
  genre: impressionism
  genre: post-romantic-era
  isrc code: GBELX1304790
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-19T13:33:40+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2c84eacbfbeb997f91befe2c94bbf7dfdeda42a427a59090b2186238c1a6ce5b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBELX1304790
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  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 0x2c84eacbfbeb997f91befe2c94bbf7dfdeda42a427a59090b2186238c1a6ce5b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBELX1304790.
    date published: 2026-07-02T03:55:08Z
  audio: Petite suite, L. 65: III. Menuet
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 103.433
    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: 0.302
    additional property: Energy
      type: PropertyValue
      value: 0.038
    additional property: Speechiness
      type: PropertyValue
      value: 0.045
    additional property: Acousticness
      type: PropertyValue
      value: 0.992
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.89
    additional property: Liveness
      type: PropertyValue
      value: 0.059
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.069
    additional property: Loudness (dB)
      type: PropertyValue
      value: -30.036
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor

A Media Luz
type: MusicAlbum
date published: 2014-08-08
track: El Adiós
  type: MusicRecording
  duration: PT3M3S
  duration ms: 183653
  explicit: false
  by artist: Francisco Canaro
  by artist: Orquesta Francisco Canaro
  by artist: Roberto Maida
  in album: A Media Luz
    type: MusicAlbum
    date published: 2014-08-08
  isrc code: US6R21491399
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T13:32:59+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3c77531270c24b8ebc98be5bc8443a0ca048f5428bd1cdb5a3b24e3dd9751585
  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/US6R21491399
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 0x3c77531270c24b8ebc98be5bc8443a0ca048f5428bd1cdb5a3b24e3dd9751585. 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/US6R21491399.
    date published: 2026-07-08T03:20:19Z
  audio: El Adiós
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 139.138
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.542
    additional property: Energy
      type: PropertyValue
      value: 0.269
    additional property: Speechiness
      type: PropertyValue
      value: 0.041
    additional property: Acousticness
      type: PropertyValue
      value: 0.974
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.199
    additional property: Liveness
      type: PropertyValue
      value: 0.106
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.598
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.081
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: La Maleva
  type: MusicRecording
  duration: PT2M45S
  duration ms: 165093
  explicit: false
  by artist: Francisco Canaro
  by artist: Orquesta Francisco Canaro
  in album: A Media Luz
    type: MusicAlbum
    date published: 2014-08-08
  isrc code: US6R21491403
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-20T09:19:04+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9574ae5484d2ab5c57a939c851d8eb47ec6218faaba33682966b63a17eeae2ff
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US6R21491403
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  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 0x9574ae5484d2ab5c57a939c851d8eb47ec6218faaba33682966b63a17eeae2ff. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US6R21491403.
    date published: 2026-07-02T03:55:08Z
  audio: La Maleva
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 141.596
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.524
    additional property: Energy
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  by artist: Orquesta Francisco Canaro
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track: Alma Tanguera

OTSVerificationAPI
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OTSTimestamp
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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

OpenTimestamps Proof of Existence
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description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa952b08ac14d441890f29075a602695985fc8db3b72b977983e83b843ea0474b. 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/US6R21491412.
date published: 2026-07-08T03:22:41Z

El Acomodo
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Vol. 10 (1929-1930)
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Vol. 13 (1931)
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La Serenata (1930-1931)
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Vol. 12 (1930-1931)
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Vol. 9 (1929)
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Adios Buenos Aires (1930 -1944)
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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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Vol. 11 (1930)
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Y Su Orquesta Típica
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:39:04Z
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Maestros del Tango
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    date published: 2026-07-08T03:22:41Z
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    date published: 2026-07-08T08:56:20Z
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(1927-1934)
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    date published: 2026-07-08T03:22:41Z
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Amor y celo (1929 - 1944)
type: MusicAlbum
date published: 2016-10-13

Tango Federico - Federico's Selection of the World's Greatest Salon Tangos
type: MusicAlbum
date published: 2012-10-07

Recuerdo
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date published: 2014-04-25

1929-1944
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date published: 2014-12-19

Historia de un Violín
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date published: 1980-03-04

Ofrenda Gaucha: Trasnochando
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date published: 2017-06-01

La Gran Venganza (Sing Along)
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date published: 2024-11-10

(1931-1934)
type: MusicAlbum
date published: 2016-07-18

Música de Calesita (1926-1932)
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date published: 2016-04-12

De un Tiempo Que Pasó, Vol. 18
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date published: 2015-08-10