Juan Carlos Cobián
type: MusicGroup
genre: tango
description: 150px|thumb|Juan Carlos Cobián Juan Carlos Cobián (1888–1953) was an Argentine bandleader and tango composer.Carlos G. Groppa The Tango in the United States: A History 2004 Page 99 "Almost 50 years la
popularity: 13
followers: 555
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album: Orquestas Inolvidables, Vol. 1
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  date published: 2016-07-14
album: Orchestral Tango
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  date published: 2010-12-01
album: Vintage Argentine Tangos (1928 - 1954), Vol. 2
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      date published: 2026-07-02T11:38:34Z
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  track: La canción de Buenos Aires
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  track: Adiós Pampa mía
album: Entrador (1952-1953)
album: Argentina!: Tango Legends from Gardel to Piazzolla
album: Tango - An Anthology
album: Alvorada
album: 50 Best Tango
album: De puerto en puerto (1952-1957)
album: Tango Sinfónico
album: Tango (Mano A Mano)
album: Master of the Bandoneon: Tango Argentino and Baroque Classics
album: Trio Hugo Diaz: Tango Argentino
album: Tango of the World / Tanga Świata / Tangos der Welt / tango mundial
album: Rey de Copas (Historical Recordings)
album: Gaucho Lindo
album: El Pirata
album: Floreal
album: Besos Brujos
album: Ave De Paso
album: Virginia
album: The Roots of Tango - El Pirata
album: Los Mareados (Arr. A. Arias)
album: Nostalgias
album: Sin Palabras
album: Timeless Tango
album: Twe słowa na rozstanie (1931-1939)
album: Nuevo Quinteto Real
album: Dolor inmenso
album: Duo CM (Cibils - Mizuno)
album: Tango Legends Vol 3: Classics
album: Der makabere Zirkus
album: Latinoamericana
album: Stara melodja
album: Lo mismo que un tango (1941-1946)
album: Tango Music: Tango Futur
album: 25 Sucesos: El major de tango
album: Olivia
album: Piosenka stara jak świat
album: Un Señor Tango (En Vivo)
album: El Arte de la Fuga y del Tango
album: Tangorama: An Anthology of 20th Century Tango, Vol. 1
album: El metejon (1950 - 1953)
album: Tango para Todo el Mundo
album: Tangos y Milongas : The Heart of Argentinian Tango
album: El Tango-Mi Refugio - Musica del Rio de la Plata
album: A Los Maestros (20th Century Music for Bandoneon and Guitar)
album: El Tango Vol. 3
album: Birds of a Feather
album: El duende
album: Vuelvo al Sur (Spanish and South American Music)

Nieblas del riachuelo
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by artist: Cobian Juan Carlos
by artist: Juan Carlos Cobián
by artist: Ophélie Gaillard
by artist: Juanjo Mosalini
by artist: Cyril Garac
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  date published: 2015-03-30
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  date published: 2026-07-08T03:53:27Z
audio: Nieblas del riachuelo
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Nostalgias
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by artist: Orquesta de Juan Sanches Gorio
by artist: Osvaldo Bazan
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popularity: 8
genre: tango
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  date published: 2026-07-02T03:55:08Z
audio: Nostalgias
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Los Mareados (Arr. A. Arias)
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by artist: Leonardo Lucero
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Shusheta
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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/ARF119900049
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bca53ed824e8bbbc557b072dd501b2765314e8230ca0e6e0af2f92861af463. 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/ARF119900049.
  date published: 2026-07-08T03:22:41Z
audio: Shusheta
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.03
  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: 0.688
  additional property: Energy
    type: PropertyValue
    value: 0.304
  additional property: Speechiness
    type: PropertyValue
    value: 0.057
  additional property: Acousticness
    type: PropertyValue
    value: 0.49
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.302
  additional property: Liveness
    type: PropertyValue
    value: 0.387
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.509
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.328
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Jesienne tango
type: MusicRecording
duration: PT2M43S
duration ms: 163733
explicit: false
by artist: Chór Dana
by artist: Juan Carlos Cobián
in album: Stara melodja
  type: MusicAlbum
  date published: 2019-07-09
popularity: 3
isrc code: CA5KR1936130
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T21:01:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5dd0bd4d09266691b22cc43d7187169be8ae28285c6398872f874fd1539884c4
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/CA5KR1936130
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd0bd4d09266691b22cc43d7187169be8ae28285c6398872f874fd1539884c4. 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/CA5KR1936130.
  date published: 2026-07-08T03:22:41Z
audio: Jesienne tango
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 115.24
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.575
  additional property: Energy
    type: PropertyValue
    value: 0.242
  additional property: Speechiness
    type: PropertyValue
    value: 0.053
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.125
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.431
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.765
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Instrumentalness
type: PropertyValue
value: 0.487

Liveness
type: PropertyValue
value: 0.148

Valence (Positivity)
type: PropertyValue
value: 0.749

Loudness (dB)
type: PropertyValue
value: -14.526

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Major

Adiós Pampa mía
type: MusicRecording
duration: PT3M13S
duration ms: 193044
explicit: false
by artist: Francisco Canaro
by artist: Hugo Del Carril
by artist: Mariano Mores
in album: Vintage Argentine Tangos (1928 - 1954), Vol. 2
  type: MusicAlbum
  date published: 2017-10-27
isrc code: CA5KR1575278
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T01:02:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf244891acc56d3e89ec7ec73a35e6a798abc9521edbf8ef76ffa6689b8f3cb65
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/CA5KR1575278
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf244891acc56d3e89ec7ec73a35e6a798abc9521edbf8ef76ffa6689b8f3cb65. 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/CA5KR1575278.
  date published: 2026-07-08T03:22:41Z
audio: Adiós Pampa mía
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 136.081
  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: 0.519
  additional property: Energy
    type: PropertyValue
    value: 0.193
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.861
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.57
  additional property: Liveness
    type: PropertyValue
    value: 0.108
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.63
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.838
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Entrador (1952-1953)
type: MusicAlbum
date published: 2018-04-07
track: La tupungatina
  type: MusicRecording
  duration: PT4M5S
  duration ms: 245093
  explicit: false
  by artist: Cristino Tapia
  by artist: Orquesta Osvaldo Pugliese
  in album: Entrador (1952-1953)
    type: MusicAlbum
    date published: 2018-04-07
  isrc code: CA5KR1800568
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T19:07:08+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc24c59d3c4a289686e1baec4a7dcd5ade748a78f3874c99374c61ba59366b878
  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/CA5KR1800568
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24c59d3c4a289686e1baec4a7dcd5ade748a78f3874c99374c61ba59366b878. 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/CA5KR1800568.
    date published: 2026-07-08T03:22:41Z
  audio: La tupungatina
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 131.172
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.551
    additional property: Energy
      type: PropertyValue
      value: 0.271
    additional property: Speechiness
      type: PropertyValue
      value: 0.035
    additional property: Acousticness
      type: PropertyValue
      value: 0.918
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.233
    additional property: Liveness
      type: PropertyValue
      value: 0.369
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.525
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.861
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Si sos brujo
  type: MusicRecording
  duration: PT3M19S
  duration ms: 199708
  explicit: false
  by artist: Emilio Balcarce
  by artist: Orquesta Osvaldo Pugliese
  in album: Entrador (1952-1953)
    type: MusicAlbum
    date published: 2018-04-07
  isrc code: CA5KR1800570
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T23:49:28+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc8367b9612c6d64ce1d83cc03d581092a85172deeb0129111071c11a6ab3d5b1
  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/CA5KR1800570
  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 0xc8367b9612c6d64ce1d83cc03d581092a85172deeb0129111071c11a6ab3d5b1. 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/CA5KR1800570.
    date published: 2026-07-08T03:53:27Z
  audio: Si sos brujo
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 129.979
    additional property: Musical Key
      type: PropertyValue
      value: 6
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.481
    additional property: Energy
      type: PropertyValue
      value: 0.271
    additional property: Speechiness
      type: PropertyValue
      value: 0.041
    additional property: Acousticness
      type: PropertyValue
      value: 0.953
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.137
    additional property: Liveness
      type: PropertyValue
      value: 0.124
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.426
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.788
    additional property: Key Name
      type: PropertyValue
      value: F#
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Por pecadora
  type: MusicRecording
  duration: PT3M3S
  duration ms: 183973
  explicit: false
  by artist: Alberto Morán
  by artist: Juan Caldarella
  by artist: Orquesta Osvaldo Pugliese
  in album: Entrador (1952-1953)
    type: MusicAlbum
    date published: 2018-04-07
  isrc code: CA5KR1800571
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T07:02:55+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9872496d1e3f32cf79361063d745154b824b8183dccf42b368c2a0dafc36f958
  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
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Por pecadora
track: N.N.
track: La cachila
track: Milonguera
track: La rayuela

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1800571

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9872496d1e3f32cf79361063d745154b824b8183dccf42b368c2a0dafc36f958. 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/CA5KR1800571.
date published: 2026-07-08T03:20:19Z

Por pecadora
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 118.634
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: 0.413
additional property: Energy
  type: PropertyValue
  value: 0.334
additional property: Speechiness
  type: PropertyValue
  value: 0.091
additional property: Acousticness
  type: PropertyValue
  value: 0.965
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.43
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.357
additional property: Loudness (dB)
  type: PropertyValue
  value: -15.871
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
  value: Minor

N.N.
type: MusicRecording
duration: PT2M31S
duration ms: 151160
explicit: false
by artist: Orquesta Osvaldo Pugliese
by artist: Osvaldo Ruggiero
in album: Entrador (1952-1953)
  type: MusicAlbum
  date published: 2018-04-07
genre: tango
isrc code: CA5KR1800573
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T04:26:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbc4d6a83114c5ee4a77f7720b93c2d4567d95a3100925a0a172c40d47b524fdf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1800573
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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 0xbc4d6a83114c5ee4a77f7720b93c2d4567d95a3100925a0a172c40d47b524fdf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR1800573.
  date published: 2026-07-02T05:09:12Z
audio: N.N.
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 132.527
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.581
  additional property: Energy
    type: PropertyValue
    value: 0.152
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.933
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.72
  additional property: Liveness
    type: PropertyValue
    value: 0.109
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.691
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.005
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor

La cachila
type: MusicRecording
duration: PT2M34S
duration ms: 154177
explicit: false
by artist: Eduardo Arolas
by artist: Orquesta Osvaldo Pugliese
in album: Entrador (1952-1953)
  type: MusicAlbum
  date published: 2018-04-07
isrc code: CA5KR1800576
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T08:22:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xec06b9eb3f84606e8122fc33ef75758542c6cf619ded0e3a3a75a957835d68a5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957073
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957073
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1800576
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:39:05Z
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 0xec06b9eb3f84606e8122fc33ef75758542c6cf619ded0e3a3a75a957835d68a5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CA5KR1800576.
  date published: 2026-07-07T18:39:05Z
audio: La cachila
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.1
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.51
  additional property: Energy
    type: PropertyValue
    value: 0.235
  additional property: Speechiness
    type: PropertyValue
    value: 0.05
  additional property: Acousticness
    type: PropertyValue
    value: 0.9
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.006
  additional property: Liveness
    type: PropertyValue
    value: 0.147
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.447
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.494
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Milonguera
type: MusicRecording
duration: PT3M25S
duration ms: 205346
explicit: false
by artist: José María Aguilar
by artist: Juan Carlos Cobos
by artist: Orquesta Osvaldo Pugliese
in album: Entrador (1952-1953)
  type: MusicAlbum
  date published: 2018-04-07
isrc code: CA5KR1800581
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T19:42:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8d05450b4b11124c4996a35414a7ef389054570aef2d5e9c6bfec503aa69d57d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1800581
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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 0x8d05450b4b11124c4996a35414a7ef389054570aef2d5e9c6bfec503aa69d57d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA5KR1800581.
  date published: 2026-07-08T08:56:20Z
audio: Milonguera
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 127.647
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.424
  additional property: Energy
    type: PropertyValue
    value: 0.289
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.944
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.317
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.491
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.894
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

La rayuela
type: MusicRecording
duration: PT3M20S
duration ms: 200640
explicit: false
by artist: Julio De Caro
by artist: Orquesta Osvaldo Pugliese
in album: Entrador (1952-1953)
  type: MusicAlbum
  date published: 2018-04-07
isrc code: CA5KR1800587
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T06:36:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xadde968e9ec3c7354a1e98c7e0c111e2fd661f8fb4001b469961d655e8580507
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/CA5KR1800587
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 0xadde968e9ec3c7354a1e98c7e0c111e2fd661f8fb4001b469961d655e8580507. 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/CA5KR1800587.
  date published: 2026-07-08T03:20:19Z
audio: La rayuela
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.678
  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: 0.411
  additional property: Energy
    type: PropertyValue
    value: 0.263
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.926
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.103
  additional property: Liveness
    type: PropertyValue
    value: 0.075
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.428
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.327
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Argentina!: Tango Legends from Gardel to Piazzolla
type: MusicAlbum
date published: 2014-05-19
track: Inspiración
  type: MusicRecording
  duration: PT2M58S
  duration ms: 178133
  explicit: false
  by artist: Osmar Maderna
  in album: Argentina!: Tango Legends from Gardel to Piazzolla
    type: MusicAlbum
    date published: 2014-05-19
  popularity: 2
  isrc code: FRZ333103020
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T05:27:28+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7d9385f6f8f2a50f42cb155bd41d54172a3bdd1b4da1534e3ef5e3923d530f56
  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/FRZ333103020
  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 0x7d9385f6f8f2a50f42cb155bd41d54172a3bdd1b4da1534e3ef5e3923d530f56. 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/FRZ333103020.
    date published: 2026-07-08T03:53:27Z
  audio: Inspiración
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 128.165
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.508
    additional property: Energy
      type: PropertyValue
      value: 0.326
    additional property: Speechiness
      type: PropertyValue
      value: 0.035
    additional property: Acousticness
      type: PropertyValue
      value: 0.89
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.041
    additional property: Liveness
      type: PropertyValue
      value: 0.265
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.631
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.892
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Llevatelo todo
  type: MusicRecording
  duration: PT2M50S
  duration ms: 170466
  explicit: false
  by artist: Alfredo De Angelis
  by artist: Oscar Larroca
  in album: Argentina!: Tango Legends from Gardel to Piazzolla
    type: MusicAlbum
    date published: 2014-05-19
  popularity: 5
  isrc code: FRZ333103070
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T08:02:46+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xed8ce2d204366b64a495d2fbee52a98e280e6256007b1c5aafbff95bfed0fa90
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957041
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957041
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ333103070
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-07T13:25:45Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8ce2d204366b64a495d2fbee52a98e280e6256007b1c5aafbff95bfed0fa90. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/FRZ333103070.
    date published: 2026-07-07T13:25:45Z
  audio: Llevatelo todo
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 133.83
    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: 0.661
    additional property: Energy
      type: PropertyValue
      value: 0.412
    additional property: Speechiness
      type: PropertyValue
      value: 0.042
    additional property: Acousticness
      type: PropertyValue
      value: 0.947
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.011
    additional property: Liveness
      type: PropertyValue
      value: 0.087
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.84
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.152
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Shusheta
  type: MusicRecording
  duration: PT2M53S
  duration ms: 173200
  explicit: false
  by artist: Angel D'Agostino
  by artist: Ángel Vargas
  in album: Argentina!: Tango Legends from Gardel to Piazzolla
    type: MusicAlbum
    date published: 2014-05-19
  popularity: 4
  isrc code: FRZ333309180
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T09:48:22+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x04c42dcd4cec861bef38f7601269dd84f9718cf3dc9e11aa3286c600383d6257
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957052
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Shusheta
track: Danzarin

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957052

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ333309180

OTSTimestamp
type: PropertyValue
value: 2026-07-07T14:50:41Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c42dcd4cec861bef38f7601269dd84f9718cf3dc9e11aa3286c600383d6257. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FRZ333309180.
date published: 2026-07-07T14:50:41Z

Shusheta
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 133.222
additional property: Musical Key
  type: PropertyValue
  value: 11
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.662
additional property: Energy
  type: PropertyValue
  value: 0.182
additional property: Speechiness
  type: PropertyValue
  value: 0.049
additional property: Acousticness
  type: PropertyValue
  value: 0.956
additional property: Instrumentalness
  type: PropertyValue
  value: 0.001
additional property: Liveness
  type: PropertyValue
  value: 0.34
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.598
additional property: Loudness (dB)
  type: PropertyValue
  value: -16.545
additional property: Key Name
  type: PropertyValue
  value: B
additional property: Mode Name
  type: PropertyValue
  value: Minor

Danzarin
type: MusicRecording
duration: PT2M53S
duration ms: 173186
explicit: false
by artist: Enrique Mario Francini
in album: Argentina!: Tango Legends from Gardel to Piazzolla
  type: MusicAlbum
  date published: 2014-05-19
popularity: 1
isrc code: FRZ333103200
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T18:24:15+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2c9493cc2f67fc91dd21a2cb799646bf3cffbf6247064701fb07763c135f8848
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/FRZ333103200
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 0x2c9493cc2f67fc91dd21a2cb799646bf3cffbf6247064701fb07763c135f8848. 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/FRZ333103200.
  date published: 2026-07-08T03:53:27Z
audio: Danzarin
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 137.244
  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: 0.455
  additional property: Energy
    type: PropertyValue
    value: 0.29
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.562
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.515
  additional property: Liveness
    type: PropertyValue
    value: 0.055
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.469
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.842
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Tango - An Anthology
type: MusicAlbum
date published: 2011-07-15

Alvorada
type: MusicAlbum
date published: 2015-03-30
track: Siete canciones populares españolas: V. nana
  type: MusicRecording
  duration: PT2M41S
  duration ms: 161253
  explicit: false
  by artist: Manuel de Falla
  by artist: Ophélie Gaillard
  by artist: David Chupete
  by artist: Emmanuel Rossfelder
  in album: Alvorada
    type: MusicAlbum
    date published: 2015-03-30
  isrc code: FROV61410402
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T23:12:25+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x0d745d5d7387729db943e13024667e25bb3f1f795b44ce9025f487474164abb5
  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/FROV61410402
  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 0x0d745d5d7387729db943e13024667e25bb3f1f795b44ce9025f487474164abb5. 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/FROV61410402.
    date published: 2026-07-08T03:20:19Z
  audio: Siete canciones populares españolas: V. nana
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 116.21
    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: 0.238
    additional property: Energy
      type: PropertyValue
      value: 0.08
    additional property: Speechiness
      type: PropertyValue
      value: 0.042
    additional property: Acousticness
      type: PropertyValue
      value: 0.96
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.861
    additional property: Liveness
      type: PropertyValue
      value: 0.079
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.119
    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.93
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Romántica
  type: MusicRecording
  duration: PT3M35S
  duration ms: 215640
  explicit: false
  by artist: Félix Lípesker
  by artist: Ophélie Gaillard
  by artist: Rudi Flores
  by artist: Juanjo Mosalini
  by artist: Romain Lécuyer
  in album: Alvorada
    type: MusicAlbum
    date published: 2015-03-30
  isrc code: FROV61410417
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T08:08:54+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xfe2ee7bd0de57dbb2b5f0bc9589913c866b5675ba99795d00cbc37cb52e5b9b4
  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/FROV61410417
  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 0xfe2ee7bd0de57dbb2b5f0bc9589913c866b5675ba99795d00cbc37cb52e5b9b4. 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/FROV61410417.
    date published: 2026-07-08T03:20:19Z
  audio: Romántica
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 114.556
    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: 0.433
    additional property: Energy
      type: PropertyValue
      value: 0.331
    additional property: Speechiness
      type: PropertyValue
      value: 0.036
    additional property: Acousticness
      type: PropertyValue
      value: 0.733
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.381
    additional property: Liveness
      type: PropertyValue
      value: 0.093
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.531
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.922
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Nieblas del riachuelo
track: Tarde em itapuã
  type: MusicRecording
  duration: PT2M59S
  duration ms: 179853
  explicit: false
  by artist: Toquinho
  by artist: Vinícius de Moraes
  by artist: Ophélie Gaillard
  by artist: Romain Lécuyer
  in album: Alvorada
    type: MusicAlbum
    date published: 2015-03-30
  isrc code: FROV61410419
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-04T05:24:48+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x0521d11f655a5940dd2f1e1355b299580e9cc64c04b2673bf050015e6cdafcc1
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Tarde em itapuã
track: Alvorada
track: Wave
track: El Manisero
track: Dos Gardenias
track: água e vinho
track: Suite pour violoncelle seul: I. prelude-fantasia
track: Oblivion
track: Grand tango: tempo di tango
track: Grand tango: meno mosso
track: Grand tango: piu mosso

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 953528

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/953528

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FROV61410419

OTSTimestamp
type: PropertyValue
value: 2026-06-13T15:41:10Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0521d11f655a5940dd2f1e1355b299580e9cc64c04b2673bf050015e6cdafcc1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FROV61410419.
date published: 2026-06-13T15:41:10Z

Tarde em itapuã
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 160.199
additional property: Musical Key
  type: PropertyValue
  value: 5
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.457
additional property: Energy
  type: PropertyValue
  value: 0.522
additional property: Speechiness
  type: PropertyValue
  value: 0.037
additional property: Acousticness
  type: PropertyValue
  value: 0.709
additional property: Instrumentalness
  type: PropertyValue
  value: 0.01
additional property: Liveness
  type: PropertyValue
  value: 0.098
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.731
additional property: Loudness (dB)
  type: PropertyValue
  value: -13.342
additional property: Key Name
  type: PropertyValue
  value: F
additional property: Mode Name
  type: PropertyValue
  value: Minor

Alvorada
type: MusicRecording
duration: PT4M10S
duration ms: 250320
explicit: false
by artist: Carlos Cachaca
by artist: Cartola
by artist: Ophélie Gaillard
by artist: Rubens Celso Lopes
by artist: Christian Paoli
by artist: Fabien Cyprien
by artist: Romain Lécuyer
by artist: Gerardo Di Giusto
by artist: Luiz de Aquino
by artist: Toquinho
in album: Alvorada
  type: MusicAlbum
  date published: 2015-03-30
genre: samba
isrc code: FROV61410405
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T04:45:07+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9bffe3d8f6e94aa25bfe010aa934078bf6810ef4b656ca19cdca2d8f64931d6d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956891
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956891
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FROV61410405
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T07:16:32Z
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 0x9bffe3d8f6e94aa25bfe010aa934078bf6810ef4b656ca19cdca2d8f64931d6d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FROV61410405.
  date published: 2026-07-06T07:16:32Z
audio: Alvorada
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.619
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.461
  additional property: Energy
    type: PropertyValue
    value: 0.372
  additional property: Speechiness
    type: PropertyValue
    value: 0.033
  additional property: Acousticness
    type: PropertyValue
    value: 0.893
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.187
  additional property: Liveness
    type: PropertyValue
    value: 0.091
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.679
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.232
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Wave
type: MusicRecording
duration: PT4M6S
duration ms: 246733
explicit: false
by artist: Antônio Carlos Jobim
by artist: Ophélie Gaillard
by artist: Romain Lécuyer
by artist: Christian Paoli
by artist: Gerardo Di Giusto
by artist: Luiz de Aquino
by artist: Rubens Celso Lopes
in album: Alvorada
  type: MusicAlbum
  date published: 2015-03-30
isrc code: FROV61410420
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T23:01:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0b4efeb183562e49d850121b49414cf2a2d6816abfb21545299e4d49e26ff76a
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/FROV61410420
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 0x0b4efeb183562e49d850121b49414cf2a2d6816abfb21545299e4d49e26ff76a. 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/FROV61410420.
  date published: 2026-07-08T03:20:19Z
audio: Wave
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.982
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.333
  additional property: Energy
    type: PropertyValue
    value: 0.339
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.811
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.071
  additional property: Liveness
    type: PropertyValue
    value: 0.109
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.48
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.762
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

El Manisero
type: MusicRecording
duration: PT3M30S
duration ms: 210426
explicit: false
by artist: Moisés Simons
by artist: Ophélie Gaillard
by artist: Christian Paoli
by artist: Gerardo Di Giusto
by artist: Florent Jodelet
by artist: Nicolas Genest
by artist: Romain Lécuyer
in album: Alvorada
  type: MusicAlbum
  date published: 2015-03-30
isrc code: FROV61410406
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T06:46:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xebcc71280b53457e67dfc0b5bb1a24cceb9e83c47fa38126b8581baac1856bea
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956894
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956894
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FROV61410406
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T07:53:57Z
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 0xebcc71280b53457e67dfc0b5bb1a24cceb9e83c47fa38126b8581baac1856bea. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FROV61410406.
  date published: 2026-07-06T07:53:57Z
audio: El Manisero
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 116.11
  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: 0.497
  additional property: Energy
    type: PropertyValue
    value: 0.585
  additional property: Speechiness
    type: PropertyValue
    value: 0.033
  additional property: Acousticness
    type: PropertyValue
    value: 0.815
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.788
  additional property: Liveness
    type: PropertyValue
    value: 0.116
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.843
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.111
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Dos Gardenias
type: MusicRecording
duration: PT4M57S
duration ms: 297080
explicit: false
by artist: Isolina Carillo
by artist: Ophélie Gaillard
by artist: Florent Jodelet
by artist: Nicolas Genest
by artist: Christian Paoli
by artist: Romain Lécuyer
by artist: Gerardo Di Giusto
in album: Alvorada
  type: MusicAlbum
  date published: 2015-03-30
isrc code: FROV61410407
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T23:45:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x84ac6fdb2118cc1a194115b9a92f37028e6371d1d42e30456da6346d337d168e
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/FROV61410407
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ac6fdb2118cc1a194115b9a92f37028e6371d1d42e30456da6346d337d168e. 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/FROV61410407.
  date published: 2026-07-08T03:22:41Z
audio: Dos Gardenias
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.116
  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: 0.356
  additional property: Energy
    type: PropertyValue
    value: 0.328
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.925
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.825
  additional property: Liveness
    type: PropertyValue
    value: 0.332
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.211
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.718
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

água e vinho
type: MusicRecording
duration: PT3M47S
duration ms: 227693
explicit: false
by artist: Egberto Gismonti
by artist: Gareldo Carneiro
by artist: Ophélie Gaillard
by artist: Gabriel Sivak
by artist: Juanjo Mosalini
in album: Alvorada
  type: MusicAlbum
  date published: 2015-03-30
genre: latin-classical
genre: violao
genre: bossa-nova
genre: brazilian-contemporary-classical
genre: brazilian-jazz
isrc code: FROV61410409
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T05:58:02+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcabfd1a82515c4d189bbfd7e6fd049da6fdd7bc5364636c24aeca4bc0483fa1d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FROV61410409
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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 0xcabfd1a82515c4d189bbfd7e6fd049da6fdd7bc5364636c24aeca4bc0483fa1d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FROV61410409.
  date published: 2026-07-08T08:56:20Z
audio: água e vinho
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 141.488
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.188
  additional property: Energy
    type: PropertyValue
    value: 0.126
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.943
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.543
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.095
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.571
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Suite pour violoncelle seul: I. prelude-fantasia
type: MusicRecording
duration: PT5M34S
duration ms: 334840
explicit: false
by artist: Gaspar Cassadó
by artist: Ophélie Gaillard
in album: Alvorada
  type: MusicAlbum
  date published: 2015-03-30
isrc code: FROV61410424
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbe1454bc151e8e11dd4e8239acab948cfac791936206e87e24b9f9fee818eed5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957061
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957061
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FROV61410424
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T16:07:00Z
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 0xbe1454bc151e8e11dd4e8239acab948cfac791936206e87e24b9f9fee818eed5. 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/FROV61410424.
  date published: 2026-07-07T16:07:00Z
audio: Suite pour violoncelle seul: I. prelude-fantasia
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 136.388
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.26
  additional property: Energy
    type: PropertyValue
    value: 0.165
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.924
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.746
  additional property: Liveness
    type: PropertyValue
    value: 0.127
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.122
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.762
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Oblivion
type: MusicRecording
duration: PT3M57S
duration ms: 237653
explicit: false
by artist: Astor Piazzolla
by artist: Ophélie Gaillard
by artist: Fernando Maguna
by artist: Romain Lécuyer
by artist: Juanjo Mosalini
in album: Alvorada
  type: MusicAlbum
  date published: 2015-03-30
isrc code: FROV61410411
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-26T19:25:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x64b2a0eb1a069c0a56866c969953abe4faabede2ae39ec62022183cc5f4332c3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FROV61410411
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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 0x64b2a0eb1a069c0a56866c969953abe4faabede2ae39ec62022183cc5f4332c3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FROV61410411.
  date published: 2026-07-02T05:09:12Z
audio: Oblivion
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.983
  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: 0.154
  additional property: Energy
    type: PropertyValue
    value: 0.162
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.929
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.682
  additional property: Liveness
    type: PropertyValue
    value: 0.11
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.109
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.906
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Grand tango: tempo di tango
type: MusicRecording
duration: PT3M26S
duration ms: 206200
explicit: false
by artist: Astor Piazzolla
by artist: Ophélie Gaillard
by artist: Romain Lécuyer
by artist: Juanjo Mosalini
in album: Alvorada
  type: MusicAlbum
  date published: 2015-03-30
isrc code: FROV61410412
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T03:48:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9e266ca070720da9388943771b4cbb4b3c4c1c05843a0e4587bf67d3a2bef468
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/FROV61410412
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e266ca070720da9388943771b4cbb4b3c4c1c05843a0e4587bf67d3a2bef468. 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/FROV61410412.
  date published: 2026-07-08T03:22:41Z
audio: Grand tango: tempo di tango
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 132.7
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.56
  additional property: Energy
    type: PropertyValue
    value: 0.27
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.825
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.899
  additional property: Liveness
    type: PropertyValue
    value: 0.193
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.42
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.958
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Grand tango: meno mosso
type: MusicRecording
duration: PT3M49S
duration ms: 229946
explicit: false
by artist: Astor Piazzolla
by artist: Ophélie Gaillard
by artist: Juanjo Mosalini
by artist: Romain Lécuyer
in album: Alvorada
  type: MusicAlbum
  date published: 2015-03-30
isrc code: FROV61410413
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T05:37:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf94cff3d4ae16e42e3e478d43216a17a7c58a8728a212d6350a492d0e52fe585
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FROV61410413
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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 0xf94cff3d4ae16e42e3e478d43216a17a7c58a8728a212d6350a492d0e52fe585. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FROV61410413.
  date published: 2026-07-08T08:56:20Z
audio: Grand tango: meno mosso
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 127.732
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.255
  additional property: Energy
    type: PropertyValue
    value: 0.248
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.816
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.915
  additional property: Liveness
    type: PropertyValue
    value: 0.107
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.108
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.302
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Grand tango: piu mosso
type: MusicRecording
duration: PT3M26S
duration ms: 206053
explicit: false
by artist: Astor Piazzolla
by artist: Ophélie Gaillard
by artist: Romain Lécuyer
by artist: Juanjo Mosalini
in album: Alvorada
  type: MusicAlbum
  date published: 2015-03-30
isrc code: FROV61410414
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T05:29:38+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x100afd834e6de8add1b7984fb02afd39d223679c275ada5635b42d0ca5a5d5c8
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/FROV61410414
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 0x100afd834e6de8add1b7984fb02afd39d223679c275ada5635b42d0ca5a5d5c8. 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/FROV61410414.
  date published: 2026-07-08T03:53:27Z
audio: Grand tango: piu mosso
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 137.815
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.577
  additional property: Energy
    type: PropertyValue
    value: 0.491
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.643
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.874
  additional property: Liveness
    type: PropertyValue
    value: 0.15
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.524
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.494
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
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50 Best Tango
type: MusicAlbum
date published: 2011-03-04
track: La Cumparsita
  type: MusicRecording
  duration: PT3M2S
  duration ms: 182200
  explicit: false
  by artist: Jose Basso
  by artist: The José Basso Orchestra
  in album: 50 Best Tango
    type: MusicAlbum
    date published: 2011-03-04
  genre: tango-cancion
  genre: vintage-tango
  isrc code: ARF045600037
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-25T22:26:08+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x18f867f1f28f638cce666b85efe3c571272779b36114fbe5d88cb9e41794c860
  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/ARF045600037
  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 0x18f867f1f28f638cce666b85efe3c571272779b36114fbe5d88cb9e41794c860. 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/ARF045600037.
    date published: 2026-07-02T03:55:08Z
  audio: La Cumparsita
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 137.812
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.413
    additional property: Energy
      type: PropertyValue
      value: 0.214
    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.859
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.196
    additional property: Liveness
      type: PropertyValue
      value: 0.089
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.572
    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.118
    additional property: Key Name
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      value: G
    additional property: Mode Name
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      value: Minor
track: El Choclo
  type: MusicRecording
  duration: PT3M44S
  duration ms: 224973
  explicit: false
  by artist: A. Villoldo
  by artist: Sexteto Mayor
  in album: 50 Best Tango
    type: MusicAlbum
    date published: 2011-03-04
  isrc code: ARF049501025
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T23:11:04+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x05a9ed41ca64464c5cd65c29f0c2aec45d757d19e5f2c5b602cec9940170e3db
  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/ARF049501025
  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 0x05a9ed41ca64464c5cd65c29f0c2aec45d757d19e5f2c5b602cec9940170e3db. 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/ARF049501025.
    date published: 2026-07-08T03:53:27Z
  audio: El Choclo
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 134.019
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.489
    additional property: Energy
      type: PropertyValue
      value: 0.39
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.788
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.03
    additional property: Liveness
      type: PropertyValue
      value: 0.142
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.544
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.982
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: De Vuelta Y Media
  type: MusicRecording
  duration: PT1M52S
  duration ms: 112546
  explicit: false
  by artist: Maximo Barbieri
  by artist: Héctor Varela
  by artist: The Héctor Varela Orchestra
  in album: 50 Best Tango
    type: MusicAlbum
    date published: 2011-03-04
  isrc code: ARF049600452
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-27T05:13:14+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8e7173cde8b415eceb3a39e31d6ad8e95b3861b30626d31bb7e309af7df7e658
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: De Vuelta Y Media
track: Rodriguez Peña
track: Yira, Yira
track: La Yumba
track: Danzarín

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956304

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF049600452

OTSTimestamp
type: PropertyValue
value: 2026-07-02T03:55:08Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7173cde8b415eceb3a39e31d6ad8e95b3861b30626d31bb7e309af7df7e658. 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/ARF049600452.
date published: 2026-07-02T03:55:08Z

De Vuelta Y Media
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 120.736
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: 0.651
additional property: Energy
  type: PropertyValue
  value: 0.458
additional property: Speechiness
  type: PropertyValue
  value: 0.078
additional property: Acousticness
  type: PropertyValue
  value: 0.787
additional property: Instrumentalness
  type: PropertyValue
  value: 0.582
additional property: Liveness
  type: PropertyValue
  value: 0.368
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.945
additional property: Loudness (dB)
  type: PropertyValue
  value: -18.104
additional property: Key Name
  type: PropertyValue
  value: E
additional property: Mode Name
  type: PropertyValue
  value: Minor

Rodriguez Peña
type: MusicRecording
duration: PT2M54S
duration ms: 174893
explicit: false
by artist: Julián Porteño
by artist: Vicente Greco
by artist: Francisco Canaro Y Su Orquesta Tipica
by artist: Francisco Canaro
by artist: Francisco Canaro Orchestra
in album: 50 Best Tango
  type: MusicAlbum
  date published: 2011-03-04
isrc code: ARF049601309
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T14:41:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x42e868e1a777a7adb08f6f90f294296d8a505e87fe60c8486c4cb2a15bf6a5f4
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/ARF049601309
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e868e1a777a7adb08f6f90f294296d8a505e87fe60c8486c4cb2a15bf6a5f4. 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/ARF049601309.
  date published: 2026-07-08T03:22:41Z
audio: Rodriguez Peña
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 147.676
  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: 0.51
  additional property: Energy
    type: PropertyValue
    value: 0.541
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.859
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.484
  additional property: Liveness
    type: PropertyValue
    value: 0.334
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.889
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.915
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Yira, Yira
type: MusicRecording
duration: PT2M0S
duration ms: 120040
explicit: false
by artist: Enrique Santos Discépolo
by artist: Florindo Sassone Y Su Orquesta
by artist: Florindo Sassone
by artist: The Florindo Sassone Orchestra
in album: 50 Best Tango
  type: MusicAlbum
  date published: 2011-03-04
genre: tango
isrc code: ARF049600454
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T05:20:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf8862de526bca17247038d85476354b94627784223c9cee1779a0f806b7fafcd
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/ARF049600454
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 0xf8862de526bca17247038d85476354b94627784223c9cee1779a0f806b7fafcd. 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/ARF049600454.
  date published: 2026-07-08T03:53:27Z
audio: Yira, Yira
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.595
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.603
  additional property: Energy
    type: PropertyValue
    value: 0.229
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.873
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.85
  additional property: Liveness
    type: PropertyValue
    value: 0.078
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.419
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.519
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

La Yumba
type: MusicRecording
duration: PT2M46S
duration ms: 166680
explicit: false
by artist: Osvaldo Pugliese
by artist: The Osvaldo Pugliese Orchestra
in album: 50 Best Tango
  type: MusicAlbum
  date published: 2011-03-04
isrc code: ARF049400391
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T13:09:06+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x71e4e480505b7a3f5c5622f892924180c3563faaac865bfdc364590523121c3b
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/ARF049400391
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e4e480505b7a3f5c5622f892924180c3563faaac865bfdc364590523121c3b. 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/ARF049400391.
  date published: 2026-07-08T03:22:41Z
audio: La Yumba
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.57
  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: 0.668
  additional property: Energy
    type: PropertyValue
    value: 0.367
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.912
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.109
  additional property: Liveness
    type: PropertyValue
    value: 0.066
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.535
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.754
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Danzarín
type: MusicRecording
duration: PT3M36S
duration ms: 216853
explicit: false
by artist: Julián Plaza
by artist: Aníbal Troilo
by artist: The Aníbal Troilo Orchestra
in album: 50 Best Tango
  type: MusicAlbum
  date published: 2011-03-04
isrc code: ARF049600458
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T11:45:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x305f526879997e8ec902222e6a97bd1fa90d4bd920f1c79a2fdf8530a0b83a1a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF049600458
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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 0x305f526879997e8ec902222e6a97bd1fa90d4bd920f1c79a2fdf8530a0b83a1a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARF049600458.
  date published: 2026-07-08T08:56:20Z
audio: Danzarín
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 132.759
  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: 0.414
  additional property: Energy
    type: PropertyValue
    value: 0.249
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.864
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.227
  additional property: Liveness
    type: PropertyValue
    value: 0.12
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.404
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.701
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

De puerto en puerto (1952-1957)
type: MusicAlbum
date published: 2018-03-06
track: Nostalgias

Tango Sinfónico
type: MusicAlbum
date published: 2006-01-01
track: Caminito
  type: MusicRecording
  duration: PT5M15S
  duration ms: 315133
  explicit: false
  by artist: Gabino Coria Peñaloza
  by artist: Juan De Dios Filiberto
  by artist: Orquesta Sinfónica y Coro de RTVE
  in album: Tango Sinfónico
    type: MusicAlbum
    date published: 2006-01-01
  isrc code: ES5681400862
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T21:56:36+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3536b6a777213c566752a7bae901102063c8e3d5563281856426f2117a09bf05
  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/ES5681400862
  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 0x3536b6a777213c566752a7bae901102063c8e3d5563281856426f2117a09bf05. 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/ES5681400862.
    date published: 2026-07-08T03:53:27Z
  audio: Caminito
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 100.262
    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: 0.199
    additional property: Energy
      type: PropertyValue
      value: 0.072
    additional property: Speechiness
      type: PropertyValue
      value: 0.034
    additional property: Acousticness
      type: PropertyValue
      value: 0.93
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.017
    additional property: Liveness
      type: PropertyValue
      value: 0.109
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.082
    additional property: Loudness (dB)
      type: PropertyValue
      value: -24.97
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major

Tango (Mano A Mano)
type: MusicAlbum
date published: 2010-11-08
track: El Corazon Del Sur - Con Miguel Poveda
  type: MusicRecording
  duration: PT4M53S
  duration ms: 293120
  explicit: false
  by artist: Eladia Blázquez
  by artist: Jose Manuel Zapata
  by artist: Miguel Poveda
  in album: Tango (Mano A Mano)
    type: MusicAlbum
    date published: 2010-11-08
  genre: tango
  genre: folklore-argentino
  isrc code: ES7350910346
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T14:42:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xab7ef2803799f1a0be916171a8fab07efe824e4bba6aaa270c3007f06f06d405
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  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/ES7350910346
  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 0xab7ef2803799f1a0be916171a8fab07efe824e4bba6aaa270c3007f06f06d405. 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/ES7350910346.
    date published: 2026-07-08T03:53:27Z
  audio: El Corazon Del Sur - Con Miguel Poveda
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.391
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
      value: 0.957
    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.128
    additional property: Loudness (dB)
      type: PropertyValue
      value: -17.895
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
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Master of the Bandoneon: Tango Argentino and Baroque Classics
type: MusicAlbum
date published: 2010-02-01
track: Margerita Gauthier
  type: MusicRecording
  duration: PT1M53S
  duration ms: 113000
  explicit: false
  by artist: Joaquín Mora
  by artist: Hugo Díaz
  in album: Master of the Bandoneon: Tango Argentino and Baroque Classics
    type: MusicAlbum
    date published: 2010-02-01
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T03:40:37+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5d8cf09fd863c97a1f7cbbcd9a23bbe0c958a1168e0ffdc1e4ffebe0efa358b3
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956891
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCKG0800098
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T07:16:32Z
  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 0x5d8cf09fd863c97a1f7cbbcd9a23bbe0c958a1168e0ffdc1e4ffebe0efa358b3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBCKG0800098.
    date published: 2026-07-06T07:16:32Z
  audio: Margerita Gauthier
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.408
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
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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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track: Adios Nonino
  type: MusicRecording
  duration: PT4M39S
  duration ms: 279000
  explicit: false
  by artist: Astor Piazzolla
  by artist: Hugo Díaz
  in album: Master of the Bandoneon: Tango Argentino and Baroque Classics
    type: MusicAlbum
    date published: 2010-02-01
  isrc code: GBCKG0800101
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3185b306f0d403920e3520cd8ea2085de19e5514a68d0abbf44bb25f0aba6ce0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    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/GBCKG0800101
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3185b306f0d403920e3520cd8ea2085de19e5514a68d0abbf44bb25f0aba6ce0. 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/GBCKG0800101.
    date published: 2026-07-08T03:22:41Z
  audio: Adios Nonino
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
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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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Trio Hugo Diaz: Tango Argentino
type: MusicAlbum
date published: 2007-01-01

Tango of the World / Tanga Świata / Tangos der Welt / tango mundial
type: MusicAlbum
date published: 2006-09-06
track: Caminito
  type: MusicRecording
  duration: PT2M55S
  duration ms: 175658
  explicit: false
  by artist: Grzegorz Falkowski
  by artist: Juan De Dios Filiberto
  by artist: Andrzej Rewak
  by artist: Gabino Coria Peñaloza
  in album: Tango of the World / Tanga Świata / Tangos der Welt / tango mundial
    type: MusicAlbum
    date published: 2006-09-06
  isrc code: PLB590600005
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-24T16:17:43+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xec29f45b5ba22ca47aea1fba2698be5a66abda30ed4bdab7abce198513707af6
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956312
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLB590600005
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T05:09:12Z
  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 0xec29f45b5ba22ca47aea1fba2698be5a66abda30ed4bdab7abce198513707af6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLB590600005.
    date published: 2026-07-02T05:09:12Z
  audio: Caminito
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.402
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.387
    additional property: Loudness (dB)
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    additional property: Key Name
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    additional property: Mode Name
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Rey de Copas (Historical Recordings)
type: MusicAlbum
date published: 2015-06-26

Gaucho Lindo
type: MusicAlbum
date published: 2014-10-26

El Pirata
type: MusicAlbum
date published: 2014-10-26

Floreal
type: MusicAlbum
date published: 2014-09-10

Besos Brujos
type: MusicAlbum
date published: 2014-08-28

Ave De Paso
type: MusicAlbum
date published: 2014-08-28

Virginia
type: MusicAlbum
date published: 2014-07-21

The Roots of Tango - El Pirata
type: MusicAlbum
date published: 2011

Los Mareados (Arr. A. Arias)
type: MusicAlbum
date published: 2021-08-20
track: Los Mareados (Arr. A. Arias)

Nostalgias
type: MusicAlbum
date published: 2016-12-25

Sin Palabras
type: MusicAlbum
date published: 2019-02-01
track: Yo te Bendigo (Arr. Troilo)
  type: MusicRecording
  duration: PT3M41S
  duration ms: 221723
  explicit: false
  by artist: Juan De Dios Filiberto
  by artist: Cuarteto Soltango
  in album: Sin Palabras
    type: MusicAlbum
    date published: 2019-02-01
  popularity: 1
  isrc code: DEAQ71942402
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x423f15867d10fd601db797e2b3e599a9dbfb25ba78c957da3dc7699929a56db2
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  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/DEAQ71942402
  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 0x423f15867d10fd601db797e2b3e599a9dbfb25ba78c957da3dc7699929a56db2. 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/DEAQ71942402.
    date published: 2026-07-08T03:20:19Z
  audio: Yo te Bendigo (Arr. Troilo)
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.374
    additional property: Energy
      type: PropertyValue
      value: 0.152
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.926
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.018
    additional property: Liveness
      type: PropertyValue
      value: 0.111
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.271
    additional property: Loudness (dB)
      type: PropertyValue
      value: -22.033
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
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      value: Major
track: La vida es una Milonga
  type: MusicRecording
  duration: PT2M21S
  duration ms: 141692
  explicit: false
  by artist: Fernando Montoni
  by artist: Cuarteto Soltango
  in album: Sin Palabras
    type: MusicAlbum
    date published: 2019-02-01
  popularity: 14
  isrc code: DEAQ71942405
  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  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/DEAQ71942405
  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 0xfcd3a41b55d72a1327609b5a953fd3642b00978e6898217ad72d11c92435d6f5. 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/DEAQ71942405.
    date published: 2026-07-02T03:55:08Z
  audio: La vida es una Milonga
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.654
    additional property: Energy
      type: PropertyValue
      value: 0.278
    additional property: Speechiness
      type: PropertyValue
      value: 0.035
    additional property: Acousticness
      type: PropertyValue
      value: 0.812
    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.917
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.639
    additional property: Key Name
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    additional property: Mode Name
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track: Carnavalito
  type: MusicRecording
  duration: PT3M6S
  duration ms: 186231
  explicit: false
  by artist: Nicolas Abalos
  by artist: Cuarteto Soltango
  in album: Sin Palabras
    type: MusicAlbum
    date published: 2019-02-01
  popularity: 4
  isrc code: DEAQ71942406
  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Carnavalito
track: Etsampa de Varón
track: Raza Criolla (El Taita)
track: No te apures Carablance
track: Ilssón marina
track: Violetas

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957118

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAQ71942406

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa758a913bf271f5df0f55aec3572426b04a1fe9b8050c6bc90c52668fa8b48b5. 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/DEAQ71942406.
date published: 2026-07-08T03:20:19Z

Carnavalito
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 126.155
additional property: Musical Key
  type: PropertyValue
  value: 11
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.619
additional property: Energy
  type: PropertyValue
  value: 0.256
additional property: Speechiness
  type: PropertyValue
  value: 0.035
additional property: Acousticness
  type: PropertyValue
  value: 0.887
additional property: Instrumentalness
  type: PropertyValue
  value: 0.454
additional property: Liveness
  type: PropertyValue
  value: 0.163
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.873
additional property: Loudness (dB)
  type: PropertyValue
  value: -20.838
additional property: Key Name
  type: PropertyValue
  value: B
additional property: Mode Name
  type: PropertyValue
  value: Minor

Etsampa de Varón
type: MusicRecording
duration: PT1M57S
duration ms: 117667
explicit: false
by artist: Mariano Mores
by artist: Cuarteto Soltango
in album: Sin Palabras
  type: MusicAlbum
  date published: 2019-02-01
popularity: 7
isrc code: DEAQ71942407
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T00:36:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe9725e7be5d0d92d600a8ff0e7a19326b76b717a752eff32486c60627001f1cd
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/DEAQ71942407
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 0xe9725e7be5d0d92d600a8ff0e7a19326b76b717a752eff32486c60627001f1cd. 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/DEAQ71942407.
  date published: 2026-07-08T03:20:19Z
audio: Etsampa de Varón
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.477
  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: 0.695
  additional property: Energy
    type: PropertyValue
    value: 0.373
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.936
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.745
  additional property: Liveness
    type: PropertyValue
    value: 0.111
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.928
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.716
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Raza Criolla (El Taita)
type: MusicRecording
duration: PT2M41S
duration ms: 161098
explicit: false
by artist: Slvador Grupillo
by artist: Cuarteto Soltango
in album: Sin Palabras
  type: MusicAlbum
  date published: 2019-02-01
popularity: 0
isrc code: DEAQ71942410
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T15:38:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5ad4e1b244c9f53fd89fb6a579010cd3df64cfc9c4f542db4fd1dd282ca38150
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAQ71942410
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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 0x5ad4e1b244c9f53fd89fb6a579010cd3df64cfc9c4f542db4fd1dd282ca38150. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEAQ71942410.
  date published: 2026-07-08T08:56:20Z
audio: Raza Criolla (El Taita)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 132.319
  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: 0.412
  additional property: Energy
    type: PropertyValue
    value: 0.172
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.833
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.664
  additional property: Liveness
    type: PropertyValue
    value: 0.19
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.469
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.522
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

No te apures Carablance
type: MusicRecording
duration: PT3M39S
duration ms: 219006
explicit: false
by artist: Roberto Garza
by artist: Cuarteto Soltango
in album: Sin Palabras
  type: MusicAlbum
  date published: 2019-02-01
popularity: 3
isrc code: DEAQ71942413
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T01:28:12+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x429b24c8a53b27b7bb46428ad5c5eddea228d737ba67e727d7eb31f5deb612f4
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/DEAQ71942413
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429b24c8a53b27b7bb46428ad5c5eddea228d737ba67e727d7eb31f5deb612f4. 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/DEAQ71942413.
  date published: 2026-07-08T03:22:41Z
audio: No te apures Carablance
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 132.045
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.603
  additional property: Energy
    type: PropertyValue
    value: 0.18
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.91
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.431
  additional property: Liveness
    type: PropertyValue
    value: 0.094
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.57
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.482
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Ilssón marina
type: MusicRecording
duration: PT2M12S
duration ms: 132035
explicit: false
by artist: Antonio Sureda
by artist: Cuarteto Soltango
in album: Sin Palabras
  type: MusicAlbum
  date published: 2019-02-01
popularity: 1
isrc code: DEAQ71942418
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T15:42:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xed4ecfc9ee184c78cd60c0f085cfe511303b8c8514ca0122d29affaadc781fc0
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/DEAQ71942418
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 0xed4ecfc9ee184c78cd60c0f085cfe511303b8c8514ca0122d29affaadc781fc0. 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/DEAQ71942418.
  date published: 2026-07-08T03:53:27Z
audio: Ilssón marina
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.898
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.44
  additional property: Energy
    type: PropertyValue
    value: 0.249
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.908
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.049
  additional property: Liveness
    type: PropertyValue
    value: 0.365
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.643
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.106
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Violetas
type: MusicRecording
duration: PT2M35S
duration ms: 155527
explicit: false
by artist: Juan Maglio
by artist: Cuarteto Soltango
in album: Sin Palabras
  type: MusicAlbum
  date published: 2019-02-01
popularity: 1
isrc code: DEAQ71942419
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T03:14:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4689b3d6e893e6fa9762492490647c8be6b8fb576f4b6113ab08fd7d4990e034
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/DEAQ71942419
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4689b3d6e893e6fa9762492490647c8be6b8fb576f4b6113ab08fd7d4990e034. 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/DEAQ71942419.
  date published: 2026-07-08T03:22:41Z
audio: Violetas
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 133.521
  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: 0.402
  additional property: Energy
    type: PropertyValue
    value: 0.318
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.868
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.033
  additional property: Liveness
    type: PropertyValue
    value: 0.131
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.856
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.465
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Timeless Tango
type: MusicAlbum
date published: 2006-01-01
track: Balada para un loco
  type: MusicRecording
  duration: PT2M47S
  duration ms: 167106
  explicit: false
  by artist: Astor Piazzolla
  by artist: Alfredo Marcucci
  by artist: Ensemble Piacevole
  in album: Timeless Tango
    type: MusicAlbum
    date published: 2006-01-01
  isrc code: NLA460610103
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-23T15:51:38+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x897cc512d07d5b75012fc737e90faf125a8173d2cb69bef65182569692f02f06
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956312
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956312
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA460610103
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T05:09:12Z
  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 0x897cc512d07d5b75012fc737e90faf125a8173d2cb69bef65182569692f02f06. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLA460610103.
    date published: 2026-07-02T05:09:12Z
  audio: Balada para un loco
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 100.986
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.28
    additional property: Energy
      type: PropertyValue
      value: 0.078
    additional property: Speechiness
      type: PropertyValue
      value: 0.043
    additional property: Acousticness
      type: PropertyValue
      value: 0.881
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.04
    additional property: Liveness
      type: PropertyValue
      value: 0.075
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.119
    additional property: Loudness (dB)
      type: PropertyValue
      value: -17.82
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Oblivion
  type: MusicRecording
  duration: PT3M5S
  duration ms: 185360
  explicit: false
  by artist: Astor Piazzolla
  by artist: Alfredo Marcucci
  by artist: Ensemble Piacevole
  in album: Timeless Tango
    type: MusicAlbum
    date published: 2006-01-01
  isrc code: NLA460610104
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T19:51:25+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x827295740c5f067cc2409bb9d92d9959fad6897022615b9ae499f0e37edb588d
  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/NLA460610104
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827295740c5f067cc2409bb9d92d9959fad6897022615b9ae499f0e37edb588d. 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/NLA460610104.
    date published: 2026-07-08T03:22:41Z
  audio: Oblivion
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 102.778
    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: 0.173
    additional property: Energy
      type: PropertyValue
      value: 0.089
    additional property: Speechiness
      type: PropertyValue
      value: 0.036
    additional property: Acousticness
      type: PropertyValue
      value: 0.767
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.104
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.151
    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.287
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Libertango
  type: MusicRecording
  duration: PT3M27S
  duration ms: 207560
  explicit: false
  by artist: Astor Piazzolla
  by artist: Alfredo Marcucci
  by artist: Ensemble Piacevole
  in album: Timeless Tango
    type: MusicAlbum
    date published: 2006-01-01
  isrc code: NLA460610115
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T06:36:00+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x6b00e436ab96da032d1f2dba878702a78815919bf9084ee6ce64ef6016b63789
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957120
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Libertango

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957120

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA460610115

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:22:41Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b00e436ab96da032d1f2dba878702a78815919bf9084ee6ce64ef6016b63789. 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/NLA460610115.
date published: 2026-07-08T03:22:41Z

Libertango
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 87.199
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: 0.354
additional property: Energy
  type: PropertyValue
  value: 0.32
additional property: Speechiness
  type: PropertyValue
  value: 0.04
additional property: Acousticness
  type: PropertyValue
  value: 0.777
additional property: Instrumentalness
  type: PropertyValue
  value: 0.555
additional property: Liveness
  type: PropertyValue
  value: 0.07
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.586
additional property: Loudness (dB)
  type: PropertyValue
  value: -18.331
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
  value: Minor

Twe słowa na rozstanie (1931-1939)
type: MusicAlbum
date published: 2017-02-05
track: Twe słowa na rozstanie
  type: MusicRecording
  duration: PT3M10S
  duration ms: 190866
  explicit: false
  by artist: Mieczysław Fogg
  by artist: Władysław Daniłowski
  in album: Twe słowa na rozstanie (1931-1939)
    type: MusicAlbum
    date published: 2017-02-05
  genre: classic-polish-pop
  isrc code: CA5KR1537518
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T18:06:52+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x1106a9c819967e142ed895888245ee702dcca7381439ae2bfbda2786966e06a0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1537518
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  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 0x1106a9c819967e142ed895888245ee702dcca7381439ae2bfbda2786966e06a0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA5KR1537518.
    date published: 2026-07-08T08:56:20Z
  audio: Twe słowa na rozstanie
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 136.562
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.448
    additional property: Energy
      type: PropertyValue
      value: 0.412
    additional property: Speechiness
      type: PropertyValue
      value: 0.06
    additional property: Acousticness
      type: PropertyValue
      value: 0.972
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.209
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.205
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.61
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Niebieskie róże, from “Taniec szczęścia”
  type: MusicRecording
  duration: PT3M10S
  duration ms: 190406
  explicit: false
  by artist: Mieczysław Fogg
  by artist: Mieczyslaw Mierzejewski
  in album: Twe słowa na rozstanie (1931-1939)
    type: MusicAlbum
    date published: 2017-02-05
  genre: classic-polish-pop
  isrc code: CA5KR1537532
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-19T16:06:00+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc626f4e9c6cd28ea46ec9000bdb48c7f70ff06201daaf073c0de52b781dd6ff6
  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/CA5KR1537532
  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 0xc626f4e9c6cd28ea46ec9000bdb48c7f70ff06201daaf073c0de52b781dd6ff6. 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/CA5KR1537532.
    date published: 2026-07-02T03:55:08Z
  audio: Niebieskie róże, from “Taniec szczęścia”
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 123.985
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.572
    additional property: Energy
      type: PropertyValue
      value: 0.238
    additional property: Speechiness
      type: PropertyValue
      value: 0.056
    additional property: Acousticness
      type: PropertyValue
      value: 0.984
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.004
    additional property: Liveness
      type: PropertyValue
      value: 0.123
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.577
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.23
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Nuevo Quinteto Real
type: MusicAlbum
date published: 1999-09-07
track: Mal de Amores
  type: MusicRecording
  duration: PT3M10S
  duration ms: 190133
  explicit: false
  by artist: Pedro Laurenz
  by artist: Nuevo Quinteto Real
  by artist: Jorge Da Silva
  in album: Nuevo Quinteto Real
    type: MusicAlbum
    date published: 1999-09-07
  isrc code: ARF119900047
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T04:29:09+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa25c065464f980a8cb70339ef32652ce2eca67a0eba834efac7795a5e5886045
  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/ARF119900047
  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 0xa25c065464f980a8cb70339ef32652ce2eca67a0eba834efac7795a5e5886045. 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/ARF119900047.
    date published: 2026-07-08T03:20:19Z
  audio: Mal de Amores
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 124.525
    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: 0.663
    additional property: Energy
      type: PropertyValue
      value: 0.342
    additional property: Speechiness
      type: PropertyValue
      value: 0.056
    additional property: Acousticness
      type: PropertyValue
      value: 0.42
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.057
    additional property: Liveness
      type: PropertyValue
      value: 0.329
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.652
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.232
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Ensueños
  type: MusicRecording
  duration: PT3M10S
  duration ms: 190400
  explicit: false
  by artist: Juan Salvatore
  by artist: Juan Salvatore and Armando Tagini
  by artist: Nuevo Quinteto Real
  by artist: Jorge Da Silva
  in album: Nuevo Quinteto Real
    type: MusicAlbum
    date published: 1999-09-07
  isrc code: ARF119900048
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-27T18:09:51+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x232490c0fa4b0f077299144dd58f8d246a32f3fc6df188c00f41434f7672bd74
  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/ARF119900048
  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 0x232490c0fa4b0f077299144dd58f8d246a32f3fc6df188c00f41434f7672bd74. 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/ARF119900048.
    date published: 2026-07-02T03:55:08Z
  audio: Ensueños
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 121.114
    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: 0.624
    additional property: Energy
      type: PropertyValue
      value: 0.261
    additional property: Speechiness
      type: PropertyValue
      value: 0.061
    additional property: Acousticness
      type: PropertyValue
      value: 0.63
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.271
    additional property: Liveness
      type: PropertyValue
      value: 0.344
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.655
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.878
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Shusheta
track: Julián
  type: MusicRecording
  duration: PT3M11S
  duration ms: 191533
  explicit: false
  by artist: Edgardo Donato
  by artist: Edgardo Donato and José Luis Panizza
  by artist: Nuevo Quinteto Real
  by artist: Jorge Da Silva
  in album: Nuevo Quinteto Real
    type: MusicAlbum
    date published: 1999-09-07
  genre: tango
  genre: orquesta-tipica
  genre: vintage-tango
  isrc code: ARF119900051
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T22:03:32+00:00
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Julián
track: Organito de la Tarde
track: Don Agustín Bardi

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xe1259fc1dc4bdd586c716f605e052c88d38f9161ab6bc7434db03c7b48509d07

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 957124

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957124

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF119900051

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:53:27Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1259fc1dc4bdd586c716f605e052c88d38f9161ab6bc7434db03c7b48509d07. 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/ARF119900051.
date published: 2026-07-08T03:53:27Z

Julián
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 131.062
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: 0.669
additional property: Energy
  type: PropertyValue
  value: 0.273
additional property: Speechiness
  type: PropertyValue
  value: 0.062
additional property: Acousticness
  type: PropertyValue
  value: 0.497
additional property: Instrumentalness
  type: PropertyValue
  value: 0.215
additional property: Liveness
  type: PropertyValue
  value: 0.121
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.458
additional property: Loudness (dB)
  type: PropertyValue
  value: -13.649
additional property: Key Name
  type: PropertyValue
  value: E
additional property: Mode Name
  type: PropertyValue
  value: Minor

Organito de la Tarde
type: MusicRecording
duration: PT2M53S
duration ms: 173386
explicit: false
by artist: Catulo Astillo
by artist: Cátulo Castillo and González Castillo
by artist: Nuevo Quinteto Real
by artist: Jorge Da Silva
in album: Nuevo Quinteto Real
  type: MusicAlbum
  date published: 1999-09-07
isrc code: ARF119900052
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T14:05:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9265229c1b473ddb45f1820ec1b79d7d089382296e8231e9a173e2e4429ff308
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF119900052
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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 0x9265229c1b473ddb45f1820ec1b79d7d089382296e8231e9a173e2e4429ff308. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARF119900052.
  date published: 2026-07-08T08:56:20Z
audio: Organito de la Tarde
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.758
  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: 0.624
  additional property: Energy
    type: PropertyValue
    value: 0.276
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.345
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.016
  additional property: Liveness
    type: PropertyValue
    value: 0.106
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.524
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.004
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Don Agustín Bardi
type: MusicRecording
duration: PT3M10S
duration ms: 190706
explicit: false
by artist: Horacia Salgan
by artist: Horacio Salgán
by artist: Nuevo Quinteto Real
by artist: Jorge Da Silva
in album: Nuevo Quinteto Real
  type: MusicAlbum
  date published: 1999-09-07
isrc code: ARF119900053
additional property: CopyrightID
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Don Agustín Bardi
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Dolor inmenso
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date published: 2017-04-15
track: El ventarron
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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: 2026-07-02T03:55:08Z
  audio: El ventarron
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Duo CM (Cibils - Mizuno)
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date published: 2023-10-11
track: Tango melódico para Violín y Piano
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037c69c5ffe3ef0f97f478de8c703ac71c43b66aa406f703085d62a0d41c1a91. 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/DEYX82115751.
    date published: 2026-07-08T03:53:27Z
  audio: Tango melódico para Violín y Piano
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Tango Legends Vol 3: Classics
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date published: 2011-11-02
track: El Choclo
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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: 2026-07-02T03:55:08Z
  audio: El Choclo
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Der makabere Zirkus
type: MusicAlbum
date published: 2020-10-30

Latinoamericana
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date published: 2019-01-11
track: Danzas de Panama: IV. Cumbia y Congo
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  by artist: The Annex Quartet
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
  audio: Danzas de Panama: IV. Cumbia y Congo
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Stara melodja
type: MusicAlbum
date published: 2019-07-09
track: Jesienne tango

Lo mismo que un tango (1941-1946)
type: MusicAlbum
date published: 2018-03-02

Tango Music: Tango Futur
type: MusicAlbum
date published: 2003-01-31

25 Sucesos: El major de tango
type: MusicAlbum
date published: 2014-05-01

Olivia
type: MusicAlbum
date published: 2020-05-05

Piosenka stara jak świat
type: MusicAlbum
date published: 2019-07-10

Un Señor Tango (En Vivo)
type: MusicAlbum
date published: 2018-12-21

El Arte de la Fuga y del Tango
type: MusicAlbum
date published: 2016-12-02

Tangorama: An Anthology of 20th Century Tango, Vol. 1
type: MusicAlbum
date published: 2021-01-15

El metejon (1950 - 1953)
type: MusicAlbum
date published: 2017-04-28

Tango para Todo el Mundo
type: MusicAlbum
date published: 2006

Tangos y Milongas : The Heart of Argentinian Tango
type: MusicAlbum
date published: 1995

El Tango-Mi Refugio - Musica del Rio de la Plata
type: MusicAlbum
date published: 2025-02-07

A Los Maestros (20th Century Music for Bandoneon and Guitar)
type: MusicAlbum
date published: 2021-06-11

El Tango Vol. 3
type: MusicAlbum
date published: 2010-03-11

Birds of a Feather
type: MusicAlbum
date published: 2021-10-14

El duende
type: MusicAlbum
date published: 2020-11-26

Vuelvo al Sur (Spanish and South American Music)
type: MusicAlbum
date published: 2022-05-03