Carlos Lazzari
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genre: tango
description: Carlos Ángel Lazzari (Buenos Aires, Argentina, December 9, 1925 – ibidem, June 7, 2009), also known by his pseudonym Palmer, was a bandoneonist, composer, arranger, and orchestra conductor dedicated t
album: Chique El Lloron (Remastered)
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  date published: 2024-12-27
track: Calla bandoneon
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  by artist: Carlos Lazzari
  by artist: Orquesta Juan D’Arienzo
  in album: Trago amargo (1956-1957)
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    date published: 2018-02-04
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    date published: 2026-07-08T03:22:41Z
  audio: Calla bandoneon
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track: Julie
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  by artist: Carlos Lazzari
  by artist: Enrique Alessio
  by artist: Orquesta Osvaldo Pugliese
  in album: Orgullo criollo (1956-1958)
    type: MusicAlbum
    date published: 2018-04-08
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    date published: 2026-07-08T03:20:19Z
  audio: Julie
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track: Estas conmigo
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  by artist: Armando Laborde
  by artist: Carlos Lazzari
  by artist: Orquesta Juan D’Arienzo
  in album: Viva mi tierra Argentina (1951-1953)
    type: MusicAlbum
    date published: 2018-02-02
  genre: tango
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  audio: Estas conmigo

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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

OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:20:19Z

Estas conmigo
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