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type: MusicGroup
genre: opera
popularity: 5
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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: Puccini: Turandot / Act 3, "Nessun dorma"
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  date published: 2018-07-13
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-02T03:55:08Z
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  track: Non ti scordar di me (Arr. for Soprano, Tenor and Orchestra by Giancarlo Chiaramello)
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  track: La traviata: Libiamo ne'lieti calici
  track: Tosca: Vissi d'arte, vissi d'amore
  track: Madama Butterfly: Un bel dì vedremo
  track: Andrea Chénier: La mamma morta
  track: La Bohème: O soave fanciulla
  track: 12 Songs, Op. 21: 7. Zdes′ khorosho (Arr. by Michael Rot)
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  track: Peer Gynt, Op. 23: Solveig's Song
  track: Lakmé: Viens, Mallika, ... Dôme épais (Flower Duet) - Excerpt
  track: Norma: Casta Diva - Excerpt
  track: Les Contes d'Hoffmann: Barcarolle - Excerpt
album: Poniéndome a tono: Universidad
album: Poniéndome a tono: Colegio

Turandot / Act 3: "Nessun dorma"
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by artist: Royal Philharmonic Orchestra
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  date published: 2026-07-07T18:39:05Z
audio: Turandot / Act 3: "Nessun dorma"
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La traviata: Libiamo ne'lieti calici
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by artist: Anna Netrebko
by artist: Yusif Eyvazov
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by artist: Royal Philharmonic Orchestra
by artist: Jader Bignamini
in album: Diva - The Very Best of Anna Netrebko
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  date published: 2018-06-29
genre: classical
genre: opera
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  date published: 2026-07-02T03:30:09Z
audio: La traviata: Libiamo ne'lieti calici
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Tosca: Vissi d'arte, vissi d'amore
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by artist: Anna Netrebko
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Madama Butterfly: Un bel dì vedremo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Madama Butterfly: Un bel dì vedremo
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Andrea Chénier: La mamma morta
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by artist: Anna Netrebko
by artist: Orchestra dell'Accademia Nazionale di Santa Cecilia
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genre: opera
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subject of: OpenTimestamps Proof of Existence
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audio: Andrea Chénier: La mamma morta
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La Bohème: O soave fanciulla
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T07:16:32Z
audio: La Bohème: O soave fanciulla
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12 Songs, Op. 21: 7. Zdes′ khorosho (Arr. by Michael Rot)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T18:39:05Z
audio: 12 Songs, Op. 21: 7. Zdes′ khorosho (Arr. by Michael Rot)
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Cantami
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T07:53:57Z
audio: Cantami
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Peer Gynt, Op. 23: Solveig's Song
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subject of: OpenTimestamps Proof of Existence
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audio: Peer Gynt, Op. 23: Solveig's Song
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Lakmé: Viens, Mallika, ... Dôme épais (Flower Duet) - Excerpt
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Norma: Casta Diva - Excerpt
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Les Contes d'Hoffmann: Barcarolle - Excerpt
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Poniéndome a tono: Universidad
type: MusicAlbum
date published: 2023-11-30

Poniéndome a tono: Colegio
type: MusicAlbum
date published: 2023-11-30