Pedro Calvo
type: MusicGroup
genre: nueva trova
genre: son cubano
genre: timba
description: thumb|220x124px | right Pedro Calvo is a popular Cuban singer sometimes affectionately nicknamed Pedrito, meaning "little Pedro". He is most famous for his time with Los Van Van, one of Cuba's premie
popularity: 3
followers: 124
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-20T22:44:50Z
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track: Hasta Siempre
track: Sutileza

Hasta Siempre
type: MusicRecording
duration: PT3M35S
duration ms: 215706
explicit: false
by artist: Haila
by artist: Vania
by artist: Aguirre
by artist: Dora
by artist: Yumurí
by artist: Aramis Galindo
by artist: Pedro Calvo
by artist: Mayito Rivera
by artist: Rojitas
by artist: Leo Vera
by artist: Paulo FG
in album: Songs To Che Vol.1
  type: MusicAlbum
  date published: 2007-01-01
genre: modern-salsa
genre: cubaton
genre: timba
isrc code: ES7630605106
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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
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Hasta Siempre
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    value: 5
  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
    value: 0.06
  additional property: Valence (Positivity)
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    value: 0.78
  additional property: Loudness (dB)
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  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
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Hasta Siempre
type: MusicRecording
duration: PT3M25S
duration ms: 205360
explicit: false
by artist: Leo
by artist: Dorita
by artist: Mayito
by artist: Paulito Fg
by artist: Aramis
by artist: Rojitas
by artist: Pedro Calvo
by artist: Vannia
by artist: Haila
by artist: Yumurí
in album: Tu Querida Presencia
  type: MusicAlbum
  date published: 1997-01-01
isrc code: ES6100678270
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Hasta Siempre
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  additional property: Time Signature
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    value: 5
  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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    value: 0.069
  additional property: Acousticness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Sutileza
type: MusicRecording
duration: PT2M36S
duration ms: 156426
explicit: false
by artist: Pío Leiva
by artist: Pedro Calvo
in album: Esta Es Mi Rumba
  type: MusicAlbum
  date published: 2003-09-08
isrc code: DEE790412730
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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
additional property: ProofProfileEvidenceStatus
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Sutileza
  type: AudioObject
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