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album: Bizet: Carmen, WD 31 (Sung in German) [Live]
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album: Lebendige Vergangenheit - Lotte Lehmann
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album: Lebendige Vergangenheit Heinrich Schlusnus II
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album: Andre Chenier / Querschnitt
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album: Richard Crooks sings Lebendige Vergangenheit and Other Favourites
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  track: Rossini: Il barbiere di Siviglia, Act 2: Aria. "La calunnia è un venticello" (Basilio)
  track: Verdi: Don Carlo, Act 2: "Nei giardin del bello saracin ostello" (Eboli, Tebaldo, Coro)
  track: Verdi: Aïda, Act 1: "Se quel guerrier io fossi! ... Celeste Aida" (Radamès)
  track: Verdi: La traviata, Act 3: "Teneste la promessa ... Addio del passato" (Violetta)
  track: Verdi: Otello, Act 4: "Niun mi tema" (Otello)
  track: Puccini: Madama Butterfly, Act 2: "Un bel dì vedremo" (Butterfly)
  track: Puccini: Tosca, Act 3: "E lucevan le stelle" (Cavaradossi)
  track: Puccini: Turandot, Act 1: "Signore, ascolta" (Liù)
  track: Leoncavallo: Pagliacci, Act 1: "Recitar! ... Vesti la giubba" (Canio)
  track: Giordano: Fedora, Act 2: "Amor ti vieta di non amar" (Loris)
  track: Delibes: Lakmé, Act 2: Air des clochettes. "Où va la jeune hindoue" (Lakmé)
  track: Bizet: La jolie fille de Perth, WD 15, Act 2: "Quand la flamme de l'amour" (Ralph)
  track: Saint-Saëns: Samson et Dalila, Op. 47, Act 2, Scene 3: Air. "Mon cœur s'ouvre à ta voix" (Dalila, Samson)
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album: 50 Best Opera Classics
album: Icon: Beniamino Gigli
album: Gigli Canzonetas 1922 - 1949 (Restauración 2024)
album: Richard Strauss: Les grands opéras - La discothèque idéale de Diapason, Vol. 7
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album: Die goldenen 20er Jahre
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album: Max Lorenz - The complete Electrola Recordings
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album: Lebendige Vergangenheit - Miliza Korjus (Vol.2)
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  date published: 2026-07-08T03:53:27Z
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  date published: 2026-07-08T03:22:41Z
audio: Rossini: Il barbiere di Siviglia, Act 2: Aria. "La calunnia è un venticello" (Basilio)
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Verdi: Don Carlo, Act 2: "Nei giardin del bello saracin ostello" (Eboli, Tebaldo, Coro)
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by artist: Orchestra of the Royal Opera House, Covent Garden
by artist: Ambrosian Opera Chorus
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: Verdi: Don Carlo, Act 2: "Nei giardin del bello saracin ostello" (Eboli, Tebaldo, Coro)
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Verdi: Aïda, Act 1: "Se quel guerrier io fossi! ... Celeste Aida" (Radamès)
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
audio: Verdi: Aïda, Act 1: "Se quel guerrier io fossi! ... Celeste Aida" (Radamès)
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Verdi: La traviata, Act 3: "Teneste la promessa ... Addio del passato" (Violetta)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Verdi: La traviata, Act 3: "Teneste la promessa ... Addio del passato" (Violetta)
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Verdi: Otello, Act 4: "Niun mi tema" (Otello)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Verdi: Otello, Act 4: "Niun mi tema" (Otello)
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Puccini: Madama Butterfly, Act 2: "Un bel dì vedremo" (Butterfly)
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by artist: Orchestra Del Teatro Dell'Opera Di Roma
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Puccini: Madama Butterfly, Act 2: "Un bel dì vedremo" (Butterfly)
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Puccini: Tosca, Act 3: "E lucevan le stelle" (Cavaradossi)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Puccini: Tosca, Act 3: "E lucevan le stelle" (Cavaradossi)
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Puccini: Turandot, Act 1: "Signore, ascolta" (Liù)
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subject of: OpenTimestamps Proof of Existence
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audio: Puccini: Turandot, Act 1: "Signore, ascolta" (Liù)
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Leoncavallo: Pagliacci, Act 1: "Recitar! ... Vesti la giubba" (Canio)
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  date published: 2026-07-08T03:22:41Z
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Giordano: Fedora, Act 2: "Amor ti vieta di non amar" (Loris)
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  date published: 2026-07-08T03:22:41Z
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Delibes: Lakmé, Act 2: Air des clochettes. "Où va la jeune hindoue" (Lakmé)
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  date published: 2026-07-08T08:56:20Z
audio: Delibes: Lakmé, Act 2: Air des clochettes. "Où va la jeune hindoue" (Lakmé)
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Bizet: La jolie fille de Perth, WD 15, Act 2: "Quand la flamme de l'amour" (Ralph)
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  date published: 2026-07-08T03:20:19Z
audio: Bizet: La jolie fille de Perth, WD 15, Act 2: "Quand la flamme de l'amour" (Ralph)
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Saint-Saëns: Samson et Dalila, Op. 47, Act 2, Scene 3: Air. "Mon cœur s'ouvre à ta voix" (Dalila, Samson)
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  date published: 2026-07-08T03:20:19Z
audio: Saint-Saëns: Samson et Dalila, Op. 47, Act 2, Scene 3: Air. "Mon cœur s'ouvre à ta voix" (Dalila, Samson)
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Wagner: Tannhäuser, Act 3: "Wie Todesahnung" - "O du, mein holder Abendstern" (Wolfram)
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50 Best Opera Classics
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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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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T08:56:20Z
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  subject of: OpenTimestamps Proof of Existence
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track: Puccini: Madama Butterfly, Act 2: "Un bel dì vedremo" (Butterfly)

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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f358c116d3737fd40541bf46a0aff0333fb6c38ce295c6bc85899d30f32c991. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC628600585.
date published: 2026-07-08T03:20:19Z

Mozart: Die Zauberflöte, K. 620, Act 2: "Der Hölle Rache kocht in meinem Herzen" (Königin)
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Puccini: Madama Butterfly, Act 2: "Un bel dì vedremo" (Butterfly)
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by artist: Sir John Barbirolli
by artist: Renata Scotto
by artist: Orchestra Del Teatro Dell'Opera Di Roma
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Puccini: Madama Butterfly, Act 2: "Un bel dì vedremo" (Butterfly)
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Icon: Beniamino Gigli
type: MusicAlbum
date published: 2010-02-22

Gigli Canzonetas 1922 - 1949 (Restauración 2024)
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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Richard Strauss: Les grands opéras - La discothèque idéale de Diapason, Vol. 7
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The Richard Tauber Album
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Lebendige Vergangenheit, Vol. 3
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Wagner - Masterwork
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Entartete Musik - Eine Tondokumentation zur Düsseldorfer Ausstellung von 1938
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    date published: 2026-07-08T03:20:19Z
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track: Rede in Nürnberg 5.9.1934
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    date published: 2026-07-02T05:09:12Z
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track: Ansprache Nürnberg 5.9.1934
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  audio: Ansprache Nürnberg 5.9.1934
track: Ansprache Boykott 1.4.1933
track: Reichsmusiktage Düsseldorf 1939

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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:22:41Z

Ansprache Nürnberg 5.9.1934
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Ansprache Boykott 1.4.1933
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Ansprache Boykott 1.4.1933
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Reichsmusiktage Düsseldorf 1939
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Reichsmusiktage Düsseldorf 1939
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Bruckner: The Romantic Master - Symphonies & Masses
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Zauberwelt Operette
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    date published: 2026-07-08T03:53:27Z
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Rudolf Schock - Portrait
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The History of Opera Russian Opera
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Verdi auf Deutsch: Große Szenen aus Othello, Don Carlos, Falstaff
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Very Best of Fritz Wunderlich
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    date published: 2026-07-08T03:20:19Z
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track: Don Giovanni K527 (1990 Digital Remaster): Il mio tesoro
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track: Der Liebestrank (1986 Digital Remaster), Akt II: Wohl drang aus ihrem Herzen - Heimlich aus ihrem Auge (una furtiva lagrima)
track: Die Zauberflöte: Dies Bildnis ist bezaubernd schön - 1986 Digital Remaster
track: Handel: Serse, HWV 40, Act 1, Scene 1: Arioso. "Ombra mai fù" (Serse)
track: Martha: Ach so from - 1986 Digital Remaster
track: Freunde, das Leben ist lebenswert! (Giuditta: Octavio, 1.Akt) - 1990 Remastered Version
track: Der Barbier von Bagdad (1990 Digital Remaster): So leb'ich noch ... Vor deinem Fenster die Blumen
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track: Die Lustigen Weiber von Windsor (1986 Digital Remaster), ACT 2: Horch, die Lerche singt im Hain!
track: Die Zirkusprinzessin (1986 Digital Remaster): Zwei Märchenaugen

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Don Giovanni K527 (1990 Digital Remaster): Il mio tesoro
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Der Liebestrank (1986 Digital Remaster), Akt II: Wohl drang aus ihrem Herzen - Heimlich aus ihrem Auge (una furtiva lagrima)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Der Liebestrank (1986 Digital Remaster), Akt II: Wohl drang aus ihrem Herzen - Heimlich aus ihrem Auge (una furtiva lagrima)
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Die Zauberflöte: Dies Bildnis ist bezaubernd schön - 1986 Digital Remaster
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Handel: Serse, HWV 40, Act 1, Scene 1: Arioso. "Ombra mai fù" (Serse)
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Martha: Ach so from - 1986 Digital Remaster
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audio: Martha: Ach so from - 1986 Digital Remaster
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Freunde, das Leben ist lebenswert! (Giuditta: Octavio, 1.Akt) - 1990 Remastered Version
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Der Barbier von Bagdad (1990 Digital Remaster): So leb'ich noch ... Vor deinem Fenster die Blumen
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subject of: OpenTimestamps Proof of Existence
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Das Land de Lachelns, Act 2 (1986 Digital Remaster): Dein ist mein ganzes Herz
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Allein! Wieder Allein! (Wolgalied: Der Zarewitsch, 1.Akt) - 1986 Remastered Version
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Die Lustigen Weiber von Windsor (1986 Digital Remaster), ACT 2: Horch, die Lerche singt im Hain!
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Die Zirkusprinzessin (1986 Digital Remaster): Zwei Märchenaugen
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Margarete Klose Favourites
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Gerhard Hüsch Lebendige Vergangenheit
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Die goldenen 20er Jahre
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Meistersinger von Nürnberg 3. Akt
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Lebendige Vergangenheit - Emanuel List
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Max Lorenz - The complete Electrola Recordings
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Heinrich Schlusnus in Arien und Szenen
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Die Deutsche Weltmarke
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Wagner: Tannhäuser und der Sängerkrieg auf Wartburg
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Rigoletto
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610926e29aa6abe35716eff4a1ee352f15eb78dc12383f755cd5605245d0a844. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA340703080.
    date published: 2026-07-09T02:31:37Z
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  by artist: Richard Wagner
  by artist: Elisabeth Grümmer /Hans Hopf/Dietrich Fischer-Dieskau/Gottlob Frick/Marianne Schech/Fritz Wunderlich/Gerhard Unger/Reiner Süss/Rudolf Gonszar/Lisa Otto/Chor der Staatsoper Berlin/Orchester de
  by artist: Franz Konwitschny
  by artist: Orchester der Deutschen Oper Berlin
  in album: Wagner: Tannhäuser
    type: MusicAlbum
    date published: 2011-03-28
  genre: classical
  genre: opera
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  additional property: CopyrightID
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  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Wagner: Tannhäuser, Act 1: Scene 2. "Geliebter, sag, wo weilt dein Sinn?" (Venus, Tannhäuser)
track: Wagner: Tannhäuser, Act 3: "Wie Todesahnung … O du, mein holder Abendstern" (Wolfram)
track: Wagner: Tannhäuser, Act 1: Scene 2. "Geliebter, komm! sieh dort die Grotte" (Venus, Tannhäuser, Die Sirenen)
track: Wagner: Tannhäuser, Act 1: Scene 3. "Frau Holda kam aus dem Berg hervor" (Der Hirt, Die Pilger, Tannhäuser)
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb3bba5f9ada58e3512b19b2de438aa2f5c58a7c1668435a9e2097dd5620281. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA340703081.
date published: 2026-07-08T08:56:20Z

Wagner: Tannhäuser, Act 1: Scene 2. "Geliebter, sag, wo weilt dein Sinn?" (Venus, Tannhäuser)
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additional property: Mode (Major/Minor)
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Wagner: Tannhäuser, Act 3: "Wie Todesahnung … O du, mein holder Abendstern" (Wolfram)
type: MusicRecording
duration: PT4M18S
duration ms: 258680
explicit: false
by artist: Richard Wagner
by artist: Dietrich Fischer-Dieskau
by artist: Orchester Der Staatsoper Berlin
by artist: Franz Konwitschny
by artist: Staatsopernorchester Berlin
in album: Wagner: Tannhäuser
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  date published: 2011-03-28
genre: classical
genre: opera
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf52980598027069e3493005177078107691c0515d812a78284512bc7430538. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA340703103.
  date published: 2026-07-02T05:09:12Z
audio: Wagner: Tannhäuser, Act 3: "Wie Todesahnung … O du, mein holder Abendstern" (Wolfram)
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Wagner: Tannhäuser, Act 1: Scene 2. "Geliebter, komm! sieh dort die Grotte" (Venus, Tannhäuser, Die Sirenen)
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duration: PT8M35S
duration ms: 515066
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by artist: Richard Wagner
by artist: Elisabeth Grümmer /Hans Hopf/Dietrich Fischer-Dieskau/Gottlob Frick/Marianne Schech/Fritz Wunderlich/Gerhard Unger/Reiner Süss/Rudolf Gonszar/Lisa Otto/Chor der Staatsoper Berlin/Orchester de
by artist: Franz Konwitschny
by artist: Orchester der Deutschen Oper Berlin
in album: Wagner: Tannhäuser
  type: MusicAlbum
  date published: 2011-03-28
genre: classical
genre: opera
isrc code: DEA340703083
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da717775e8b55291ed8883e277592b8cebac7b1ee55e0c5f35e8c2a93be2fce. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA340703083.
  date published: 2026-07-08T03:53:27Z
audio: Wagner: Tannhäuser, Act 1: Scene 2. "Geliebter, komm! sieh dort die Grotte" (Venus, Tannhäuser, Die Sirenen)
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Wagner: Tannhäuser, Act 1: Scene 3. "Frau Holda kam aus dem Berg hervor" (Der Hirt, Die Pilger, Tannhäuser)
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duration: PT8M48S
duration ms: 528706
explicit: false
by artist: Richard Wagner
by artist: Elisabeth Grümmer /Hans Hopf/Dietrich Fischer-Dieskau/Gottlob Frick/Marianne Schech/Fritz Wunderlich/Gerhard Unger/Reiner Süss/Rudolf Gonszar/Lisa Otto/Chor der Staatsoper Berlin/Orchester de
by artist: Franz Konwitschny
by artist: Orchester der Deutschen Oper Berlin
in album: Wagner: Tannhäuser
  type: MusicAlbum
  date published: 2011-03-28
genre: classical
genre: opera
isrc code: DEA340703084
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd1ab109244cb5834e89a431974decc24192019ba49f072e275b4ba9b2744ae. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA340703084.
  date published: 2026-07-08T03:53:27Z
audio: Wagner: Tannhäuser, Act 1: Scene 3. "Frau Holda kam aus dem Berg hervor" (Der Hirt, Die Pilger, Tannhäuser)
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Wagner: Tannhäuser, Act 1: Scene 4. "Als du in kühnem Sange uns bestrittest" (Wolfram, Landgraf, Tannhäuser, Die Sänger)
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duration: PT6M42S
duration ms: 402040
explicit: false
by artist: Richard Wagner
by artist: Elisabeth Grümmer /Hans Hopf/Dietrich Fischer-Dieskau/Gottlob Frick/Marianne Schech/Fritz Wunderlich/Gerhard Unger/Reiner Süss/Rudolf Gonszar/Lisa Otto/Chor der Staatsoper Berlin/Orchester de
by artist: Franz Konwitschny
by artist: Orchester der Deutschen Oper Berlin
in album: Wagner: Tannhäuser
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  date published: 2011-03-28
genre: classical
genre: opera
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additional property: CopyrightID
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:39:04Z
audio: Wagner: Tannhäuser, Act 1: Scene 4. "Als du in kühnem Sange uns bestrittest" (Wolfram, Landgraf, Tannhäuser, Die Sänger)
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Verdi: Othello
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Aida
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Herbert Ernst Groh in Opera
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Schlager Im Spiegel Der Zeit – 1930
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  additional property: OTSVerificationAPI
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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
  subject of: OpenTimestamps Proof of Existence
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Lebendige Vergangenheit - Miliza Korjus (Vol.2)
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