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genre: opera
description: thumb|Renato Cioni (photo with 1960 dedication) Renato Cioni (15 April 1929 – 4 March 2014) was an Italian operatic lyric tenor, particularly associated with the Italian repertory. Born in Portoferr
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album: Verdi: La traviata (Live)
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  date published: 2015-07-03
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-31T18:48:12Z
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track: Verdi: La Traviata: Prelude - Act One
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T06:39:12Z
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track: Verdi: La Traviata: Un di, felice, eterea - Act One
track: Verdi: La Traviata: Libiamo ne'lieti calici - Act One
track: Verdi: La Traviata: Dell'invito trascorsa e gia l'ora? - Act One
track: Verdi: La Traviata: Addio del passato - Act Three

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Verdi: La Traviata: Un di, felice, eterea - Act One
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by artist: Mario Sereni
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by artist: Alfredo Giacomotti
by artist: Giorgio Loretti
by artist: Limbania Leoni
by artist: Silvio Majonica
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by artist: Franco Ricciardi
by artist: Orchestra Del Teatro Alla Scala, Milano
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Verdi: La Traviata: Libiamo ne'lieti calici - Act One
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by artist: Limbania Leoni
by artist: Silvio Majonica
by artist: Nicola Zaccaria
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T14:36:16Z
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Verdi: La Traviata: Dell'invito trascorsa e gia l'ora? - Act One
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by artist: Renato Cioni
by artist: Mario Sereni
by artist: Romana Righetti
by artist: Alfredo Giacomotti
by artist: Giorgio Loretti
by artist: Limbania Leoni
by artist: Silvio Majonica
by artist: Nicola Zaccaria
by artist: Franco Ricciardi
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Herbert von Karajan
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genre: opera
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Verdi: La Traviata: Addio del passato - Act Three
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by artist: Limbania Leoni
by artist: Silvio Majonica
by artist: Nicola Zaccaria
by artist: Franco Ricciardi
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Herbert von Karajan
in album: La Traviata
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  date published: 2002-04-02
popularity: 1
genre: classical
genre: opera
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Verdi: La Traviata: Addio del passato - Act Three
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