Carlos Martínez
type: MusicGroup
genre: folklore argentino
popularity: 16
followers: 176
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additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146258ecce02ea05b5b65ab16d51898332d75e06756c4147f72790a4ab8d8a79. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98d2fb36-7fa6-4070-a855-7c13ca72f7d8.json and https://artists.proofprofile.net/proofs/artist/98d2fb36-7fa6-4070-a855-7c13ca72f7d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:44:49Z
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album: Guitare : Grands compositeurs argentins Abel Fleury, Atahualpa Yupanqui, Astor Piazzola, Eduardo Falú
  type: MusicAlbum
  date published: 2006
album: Música Argentina para Guitarra - Folklore / Volumen 2
  type: MusicAlbum
  date published: 2008
album: Argentinische Musik Für Gitarre / Ausgabe 3
  type: MusicAlbum
  date published: 2008
album: Música Argentina para Guitarra / Folklore, Vol. 3
  type: MusicAlbum
  date published: 2008
  track: La Nadita (Chacarera)
    type: MusicRecording
    duration: PT2M19S
    duration ms: 139424
    explicit: false
    by artist: Carlos Martínez
    in album: Música Argentina para Guitarra / Folklore, Vol. 3
      type: MusicAlbum
      date published: 2008
    genre: folklore argentino
    isrc code: ARZ020801374
    additional property: CopyrightID
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      value: registered
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      type: PropertyValue
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c53f9bbac0f531a02ae3db7f18195995aa03f9a66b16a60a0459fba14359cf1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ARZ020801374.
      date published: 2026-07-05T19:27:56Z
    audio: La Nadita (Chacarera)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 150.195
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.359
      additional property: Energy
        type: PropertyValue
        value: 0.256
      additional property: Speechiness
        type: PropertyValue
        value: 0.055
      additional property: Acousticness
        type: PropertyValue
        value: 0.9
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.872
      additional property: Liveness
        type: PropertyValue
        value: 0.101
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.191
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.974
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Argentine Music for Guitar - Folklore / Vol. 2
  type: MusicAlbum
  date published: 2008
album: Atahualpa Yupanqui, Obra Completa para Guitarra: Versiones
  type: MusicAlbum
  date published: 2008-01-01
  track: Zamba de Mi Pago (Zamba)
    type: MusicRecording
    duration: PT3M6S
    duration ms: 186586
    explicit: false
    by artist: Carlos Martínez
    in album: Atahualpa Yupanqui, Obra Completa para Guitarra: Versiones
      type: MusicAlbum
      date published: 2008-01-01
    genre: folklore argentino
    isrc code: ARZ020801381
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T19:12:23Z
    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 0x48e0f61e0827b7e5c49d8875f01cdc9dda6a8142caaa74c533653e1ea1979fb0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ARZ020801381.
      date published: 2026-07-17T19:12:23Z
    audio: Zamba de Mi Pago (Zamba)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
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      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.448
      additional property: Energy
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      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Atahualpa Yupanqui, Complete Works for Guitar: Compositions
album: Carlos Martínez interpreta a Eduardo Falú Vol.1
album: Atahualpa Yupanqui - obra completa para guitarra
album: Eres Increible
album: Dentro
album: Carloz Martinez interpreta a Eduardo Falu, Vol. 1
album: Carlos Martinez interpreta Eduardo Falu, Vol. 2
album: Atahualpa Yupanqui: Obra completa para guitara versiones Carlos Martinez
album: Oración a Eva Perón
album: Atraparte Con Mi Voz
album: Legado: Siguiendo Tus Pasos

Speechiness
type: PropertyValue
value: 0.049

Acousticness
type: PropertyValue
value: 0.927

Instrumentalness
type: PropertyValue
value: 0.93

Liveness
type: PropertyValue
value: 0.108

Valence (Positivity)
type: PropertyValue
value: 0.746

Loudness (dB)
type: PropertyValue
value: -16.036

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Major

Atahualpa Yupanqui, Complete Works for Guitar: Compositions
type: MusicAlbum
date published: 2008-01-01

Carlos Martínez interpreta a Eduardo Falú Vol.1
type: MusicAlbum
date published: 2008-02-05

Atahualpa Yupanqui - obra completa para guitarra
type: MusicAlbum
date published: 2008-05-30

Eres Increible
type: MusicAlbum
date published: 2009-09-25

Dentro
type: MusicAlbum
date published: 2010-11-24

Carloz Martinez interpreta a Eduardo Falu, Vol. 1
type: MusicAlbum
date published: 2011-09-01

Carlos Martinez interpreta Eduardo Falu, Vol. 2
type: MusicAlbum
date published: 2011-09-01

Atahualpa Yupanqui: Obra completa para guitara versiones Carlos Martinez
type: MusicAlbum
date published: 2012-01-01

Atahualpa Yupanqui: Obra completa para guitara versiones Carlos Martinez
type: MusicAlbum
date published: 2012-01-01

Oración a Eva Perón
type: MusicAlbum
date published: 2013-03-08

Atraparte Con Mi Voz
type: MusicAlbum
date published: 2014-09-18

Legado: Siguiendo Tus Pasos
type: MusicAlbum
date published: 2020-08-07