Horacio Ferrer
type: MusicGroup
genre: tango
description: Horacio Arturo Ferrer Ezcurra (2 June 1933 – 21 December 2014) was a Uruguayan–Argentine poet, broadcaster, reciter and tango lyricist. He is particularly well known for having composed the lyrics f
popularity: 11
followers: 994
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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
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album: Versos y Cantares
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  date published: 1984-08-08
album: Moriré en Buenos Aires (Vida y Obra de Horacio Ferrer)
  type: MusicAlbum
  date published: 1992-03-03
album: Horacio Ferrer
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  date published: 2004-10-21
album: El pueblo joven (Oratoria de dos mundos)
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  date published: 2011
album: El Pueblo Joven (Oratoria de Dos Mundos)
  type: MusicAlbum
  date published: 2011-07-05
album: El Pueblo Joven (Oratoria de Dos Mundos)
  type: MusicAlbum
  date published: 2011-07-05
album: Flor de Tangos y Poemas (feat. Juan Trepiana)
  type: MusicAlbum
  date published: 2013-04-09
track: Canción de mi niñez
track: Balada para un Loco
track: Chiquilin de Bachin
track: Piazzolla / Arr. Desyatnikov: María de Buenos Aires, Scene 1: Alevare (El duende)
track: Balada para Mi Muerte

Canción de mi niñez
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by artist: Niño Etc.
by artist: Horacio Ferrer
in album: El gusto de los días
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Canción de mi niñez
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Balada para un Loco
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explicit: false
by artist: Horacio Ferrer
by artist: Raúl Lavié
in album: Tango en Granada. Festival Internacional de Tango, 1993
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  date published: 1993
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Balada para un Loco
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Chiquilin de Bachin
type: MusicRecording
duration: PT4M10S
duration ms: 250055
explicit: false
by artist: Astor Piazzolla
by artist: Horacio Ferrer
by artist: Reid Gilje
by artist: Noteservice Wind Band
in album: Tales and Myths of Gothia - New Music for Concert Band - Demo Tracks 2018-2019
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popularity: 5
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T06:57:05Z
audio: Chiquilin de Bachin
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Balada para un Loco
type: MusicRecording
duration: PT4M48S
duration ms: 288573
explicit: false
by artist: Astor Piazzolla
by artist: Horacio Ferrer
by artist: Maximo Diego Pujol
in album: Lejos de casa
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popularity: 2
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T18:23:33Z
audio: Balada para un Loco
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Piazzolla / Arr. Desyatnikov: María de Buenos Aires, Scene 1: Alevare (El duende)
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duration: PT6M11S
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explicit: false
by artist: Gidon Kremer
by artist: Horacio Ferrer
by artist: Kremerata Musica
in album: The Sound of Piazzolla
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popularity: 1
genre: classical
genre: minimalism
genre: tango
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:20:15Z
audio: Piazzolla / Arr. Desyatnikov: María de Buenos Aires, Scene 1: Alevare (El duende)
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additional property: OTSVerifyInstructions
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Balada para Mi Muerte
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duration: PT4M19S
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by artist: Astor Piazzolla
by artist: Horacio Ferrer
in album: Piazzolla Íntimo en el 16. Rue Descartes (Tango en París)
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  date published: 2026-07-31T23:30:38Z
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.422
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.037
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: ARU8P2100003
additional property: CopyrightID
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: 960478
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T23:30:38+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARU8P2100003
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960478
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960478
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T23:30:38+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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch