Milan La Scala Chorus
type: MusicGroup
genre: opera
popularity: 23
followers: 158
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additional property: OTSVerifyInstructions
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-12T19:28:13Z
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album: Mascagni: Cavalleria Rusticana (Callas, Di Stefano, Serafin) (1953)
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  date published: 2006-01-17
  track: Cavalleria rusticana: Part I: Prelude
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    by artist: Maria Callas
    by artist: Giuseppe Di Stefano
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    by artist: Anna Maria Canali
    by artist: Ebe Ticozzi
    by artist: Vittore Veneziani
    by artist: Milan La Scala Chorus
    by artist: Orchestra Del Teatro Alla Scala, Milano
    by artist: Tullio Serafin
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      date published: 2006-01-17
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    additional property: OTSVerifyInstructions
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-02T03:55:08Z
    audio: Cavalleria rusticana: Part I: Prelude
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  track: Cavalleria rusticana: Part II: Intermezzo
album: Bellini: La sonnambula (1955)
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  date published: 2015-03-01
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    by artist: Giuseppe Nessi
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:20:19Z
    audio: La sonnambula: Act I Scene 1: Vi ravviso, o luoghi ameni (Rodolfo, Chorus)
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album: Bellini: Norma (1955)
album: Donizetti: Poliuto
album: A Discographic Career
album: Verdi: Un ballo in maschera
album: Verdi: La traviata (Live)
album: Ettore Bastianini: A Discographic Career (Recorded 1955-1962)
album: Bellini: La sonnambula (1957)
album: Callas, Maria: Liebeslieder
album: Puccini, G.: Manon Lescaut
album: Donizetti: Lucia di Lammermoor
album: Verdi: Rigoletto (Callas, Di Stefano, Gobbi / La Scala) (1955)
album: Verdi: Macbeth (Live)
album: Absolute Masterworks - Opera
album: Verdi: Forza Del Destino (La) (Callas, Tucker, Serafin) (1954)
album: Puccini: Madama Butterfly (Callas, Gedda, Karajan) (1955)
album: Ich mag keine Klassik, aber das gefällt mir, Vol. 4
album: Giordano: Andrea Chenier (Gigli, Caniglia) (1931)
album: Puccini, G.: Turandot (Callas, Fernandi, Schwarzkopf, La Scala, Serafin) (1957)
album: Puccini, G.: Opera Excerpts
album: Rossini: Il barbiere di Siviglia - The Sony Opera House
album: Rossini: Der Barbier von Sevilla
album: Giordano: Andrea Chenier (La Scala) (1928-1931)
album: Bellini: Norma (Callas, Filippeschi) (1953)
album: Callas, Maria: Portrait (A) (1949-1954)
album: Bach, J.S.: Prelude and Fugue, Bwv 566 / Air On A G String / Brahms, J.: Intermezzo in A Major (Coming To the Mill - A Musical Evening for L.S. Lowry)
album: Puccini: Madama Butterfly (Gigli, Dal Monte) (1939)
album: Maria Callas Sings Casta Diva
album: Donizetti, G.: Lucia Di Lammermoor (Callas) (1954)
album: Verdi: Traviata (La) (Di Stefano, Stella) (1955)
album: Donizetti: Il Pigmalione (1960)
album: Giacomo Puccini, Vol. 2 (1953)
album: Puccini: Tosca (Callas, Di Stefano) (1953)
album: Verdi: Il trovatore (1956)
album: Verdi: Trovatore (Il) (Callas, Di Stefano, Karajan) (1956)
album: Maria Callas Sings Verdi
album: Wilhelm Furtwangler Conducts Richard Wagner's Der Ring des Nibelungen (Milan 1950)
album: Verdi: Ballo in Maschera (Un) (Callas, Di Stefano, Gobbi) (1956)
album: Verdi: La battaglia di Legnano; La forza del destino

Cavalleria rusticana: Part II: Intermezzo
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by artist: Pietro Mascagni
by artist: Maria Callas
by artist: Giuseppe Di Stefano
by artist: Rolando Panerai
by artist: Anna Maria Canali
by artist: Ebe Ticozzi
by artist: Vittore Veneziani
by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Tullio Serafin
in album: Mascagni: Cavalleria Rusticana (Callas, Di Stefano, Serafin) (1953)
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  date published: 2006-01-17
genre: opera
isrc code: HKI190554812
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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
additional property: ProofProfileEvidenceStatus
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: Cavalleria rusticana: Part II: Intermezzo
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Rigoletto, Act I: Gualtier Malde … Caro nome
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by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Tullio Serafin
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genre: classical
genre: opera
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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
additional property: ProofProfileEvidenceStatus
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T17:25:41Z
audio: Rigoletto, Act I: Gualtier Malde … Caro nome
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Bellini: Norma (1955)
type: MusicAlbum
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track: Norma: Act I: Oh, di qual sei tu vittima (Norma, Adalgisa, Pollione)
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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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  by artist: Orchestra Del Teatro Alla Scala, Milano
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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
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    date published: 2026-07-08T03:22:41Z
  audio: Norma: Act I: Ite sul colle, o Druidi! (Oroveso, Chorus)
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track: Norma: Act I: Perfido! … Or basti! (Norma, Pollione, Adalgisa)
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  by artist: Mario del Monaco
  by artist: Nicola Zaccaria
  by artist: Maria Callas
  by artist: Giulietta Simionato
  by artist: Gabriella Carturan
  by artist: Giuseppe Zampieri
  by artist: Milan La Scala Chorus
  by artist: Orchestra Del Teatro Alla Scala, Milano
  by artist: Antonino Votto
  in album: Bellini: Norma (1955)
  genre: opera
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  additional property: CopyrightRegisteredAt
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Norma: Act I: Perfido! … Or basti! (Norma, Pollione, Adalgisa)
track: Norma: Act I: Me protegge, me difende (Pollione)
track: Norma: Act II: Deh! Con te, con te li prendi (Norma, Adalgisa)
track: Norma: Act I: Introduction Instrumental
track: Norma: Act II: Mira, o Norma (Adalgisa, Norma)
track: Norma: Act II: Cedi, deh cedi! (Adalgisa, Norma)
track: Norma: Act I: Ah! Bello a me ritorna (Norma, Oroveso, Chorus)
track: Norma: Act I: Introduction to Scene 5
track: Norma: Act II: Guerrieri! A voi venire (Oroveso, Chorus)
track: Norma: Act II: Ei tornera! Si! (Norma, Clotilde, Oroveso, Chorus)
track: Norma: Act I: Vanne, e li cela entrambi (Norma, Clotilde)
track: Norma: Act II: Dammi quel ferro! (All)
track: Norma: Act I: Ah si, fa' core, abbracciami (Norma, Adalgisa)
track: Norma: Act II: Deh! Non volerli vittime (All)

Giulietta Simionato
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Gabriella Carturan
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Giuseppe Zampieri
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Milan La Scala Chorus
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Orchestra Del Teatro Alla Scala, Milano
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Antonino Votto
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Bellini: Norma (1955)
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date published: 2015-02-01

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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
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description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1209c5605bbba11a479b20ed50b3051afbf355125fe7dfc4a27911f198ecf0. 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/USB8U1509052.
date published: 2026-07-08T03:53:27Z

Norma: Act I: Perfido! … Or basti! (Norma, Pollione, Adalgisa)
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Norma: Act I: Me protegge, me difende (Pollione)
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by artist: Vincenzo Bellini
by artist: Mario del Monaco
by artist: Nicola Zaccaria
by artist: Maria Callas
by artist: Giulietta Simionato
by artist: Gabriella Carturan
by artist: Giuseppe Zampieri
by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Antonino Votto
in album: Bellini: Norma (1955)
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  date published: 2015-02-01
genre: opera
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79b3c950150cf5d3dee6e895269146da0896cb6a2a2d024e360dd7cf31a14a6. 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/USB8U1509033.
  date published: 2026-07-08T03:53:27Z
audio: Norma: Act I: Me protegge, me difende (Pollione)
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Norma: Act II: Deh! Con te, con te li prendi (Norma, Adalgisa)
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by artist: Mario del Monaco
by artist: Nicola Zaccaria
by artist: Maria Callas
by artist: Giulietta Simionato
by artist: Gabriella Carturan
by artist: Giuseppe Zampieri
by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Antonino Votto
in album: Bellini: Norma (1955)
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  date published: 2015-02-01
genre: opera
isrc code: USB8U1509058
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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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
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  date published: 2026-07-08T03:53:27Z
audio: Norma: Act II: Deh! Con te, con te li prendi (Norma, Adalgisa)
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Norma: Act I: Introduction Instrumental
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duration: PT1M27S
duration ms: 87933
explicit: false
by artist: Vincenzo Bellini
by artist: Mario del Monaco
by artist: Nicola Zaccaria
by artist: Maria Callas
by artist: Giulietta Simionato
by artist: Gabriella Carturan
by artist: Giuseppe Zampieri
by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Antonino Votto
in album: Bellini: Norma (1955)
  type: MusicAlbum
  date published: 2015-02-01
genre: opera
isrc code: USB8U1509036
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: 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d33bc886fa4feccf90c862e69e18b30c43ba284dff790da10c0da966a3ce0a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USB8U1509036.
  date published: 2026-07-02T03:55:08Z
audio: Norma: Act I: Introduction Instrumental
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Norma: Act II: Mira, o Norma (Adalgisa, Norma)
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duration: PT4M15S
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by artist: Mario del Monaco
by artist: Nicola Zaccaria
by artist: Maria Callas
by artist: Giulietta Simionato
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by artist: Giuseppe Zampieri
by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Antonino Votto
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genre: opera
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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
  type: DigitalDocument
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  date published: 2026-07-08T08:56:20Z
audio: Norma: Act II: Mira, o Norma (Adalgisa, Norma)
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  additional property: Tempo (BPM)
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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Norma: Act II: Cedi, deh cedi! (Adalgisa, Norma)
type: MusicRecording
duration: PT1M3S
duration ms: 63520
explicit: false
by artist: Vincenzo Bellini
by artist: Mario del Monaco
by artist: Nicola Zaccaria
by artist: Maria Callas
by artist: Giulietta Simionato
by artist: Gabriella Carturan
by artist: Giuseppe Zampieri
by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Antonino Votto
in album: Bellini: Norma (1955)
  type: MusicAlbum
  date published: 2015-02-01
genre: opera
isrc code: USB8U1509060
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-07T11:43:26+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x20f6f941728ac71f4268044fa06a04dd2a9660129cb38ee0ccfd939377f3c5e9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1509060
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f6f941728ac71f4268044fa06a04dd2a9660129cb38ee0ccfd939377f3c5e9. 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/USB8U1509060.
  date published: 2026-07-08T08:56:20Z
audio: Norma: Act II: Cedi, deh cedi! (Adalgisa, Norma)
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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Norma: Act I: Ah! Bello a me ritorna (Norma, Oroveso, Chorus)
type: MusicRecording
duration: PT2M54S
duration ms: 174333
explicit: false
by artist: Vincenzo Bellini
by artist: Mario del Monaco
by artist: Nicola Zaccaria
by artist: Maria Callas
by artist: Giulietta Simionato
by artist: Gabriella Carturan
by artist: Giuseppe Zampieri
by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Antonino Votto
in album: Bellini: Norma (1955)
  type: MusicAlbum
  date published: 2015-02-01
genre: opera
isrc code: USB8U1509039
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T00:08:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2f8858e51e5b6cd165dc78390f94e05f694d4bedae45bf92c53a3d6a8d86ba7b
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1509039
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8858e51e5b6cd165dc78390f94e05f694d4bedae45bf92c53a3d6a8d86ba7b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USB8U1509039.
  date published: 2026-07-08T03:22:41Z
audio: Norma: Act I: Ah! Bello a me ritorna (Norma, Oroveso, Chorus)
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.518
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Norma: Act I: Introduction to Scene 5
type: MusicRecording
duration: PT1M27S
duration ms: 87640
explicit: false
by artist: Vincenzo Bellini
by artist: Mario del Monaco
by artist: Nicola Zaccaria
by artist: Maria Callas
by artist: Giulietta Simionato
by artist: Gabriella Carturan
by artist: Giuseppe Zampieri
by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Antonino Votto
in album: Bellini: Norma (1955)
  type: MusicAlbum
  date published: 2015-02-01
genre: opera
isrc code: USB8U1509040
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T07:46:08+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd8111091aefcc32de901f24b66bf4916254870ba6a7110c662efc2cb5332f2cb
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1509040
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8111091aefcc32de901f24b66bf4916254870ba6a7110c662efc2cb5332f2cb. 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/USB8U1509040.
  date published: 2026-07-08T03:20:19Z
audio: Norma: Act I: Introduction to Scene 5
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 146.708
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.3
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.478
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.026
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Norma: Act II: Guerrieri! A voi venire (Oroveso, Chorus)
type: MusicRecording
duration: PT1M57S
duration ms: 117306
explicit: false
by artist: Vincenzo Bellini
by artist: Mario del Monaco
by artist: Nicola Zaccaria
by artist: Maria Callas
by artist: Giulietta Simionato
by artist: Gabriella Carturan
by artist: Giuseppe Zampieri
by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Antonino Votto
in album: Bellini: Norma (1955)
  type: MusicAlbum
  date published: 2015-02-01
genre: opera
isrc code: USB8U1509063
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T14:08:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x460ce9f79e4030f3bc6f16de5afde40f3a9d56ad717df0152e58d19dcf30a340
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1509063
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460ce9f79e4030f3bc6f16de5afde40f3a9d56ad717df0152e58d19dcf30a340. 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/USB8U1509063.
  date published: 2026-07-08T03:53:27Z
audio: Norma: Act II: Guerrieri! A voi venire (Oroveso, Chorus)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.634
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.221
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.376
  additional property: Key Name
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    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Norma: Act II: Ei tornera! Si! (Norma, Clotilde, Oroveso, Chorus)
type: MusicRecording
duration: PT3M34S
duration ms: 214480
explicit: false
by artist: Vincenzo Bellini
by artist: Mario del Monaco
by artist: Nicola Zaccaria
by artist: Maria Callas
by artist: Giulietta Simionato
by artist: Gabriella Carturan
by artist: Giuseppe Zampieri
by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Antonino Votto
in album: Bellini: Norma (1955)
  type: MusicAlbum
  date published: 2015-02-01
genre: opera
isrc code: USB8U1509065
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T18:21:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd4ed961eb27aa624a26989e91a02c16c4ac339485d3bd9cd9a350b72e5f8ff66
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1509065
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ed961eb27aa624a26989e91a02c16c4ac339485d3bd9cd9a350b72e5f8ff66. 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/USB8U1509065.
  date published: 2026-07-08T03:53:27Z
audio: Norma: Act II: Ei tornera! Si! (Norma, Clotilde, Oroveso, Chorus)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.17
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.071
  additional property: Acousticness
    type: PropertyValue
    value: 0.969
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.077
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.882
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Norma: Act I: Vanne, e li cela entrambi (Norma, Clotilde)
type: MusicRecording
duration: PT4M12S
duration ms: 252026
explicit: false
by artist: Vincenzo Bellini
by artist: Mario del Monaco
by artist: Nicola Zaccaria
by artist: Maria Callas
by artist: Giulietta Simionato
by artist: Gabriella Carturan
by artist: Giuseppe Zampieri
by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Antonino Votto
in album: Bellini: Norma (1955)
  type: MusicAlbum
  date published: 2015-02-01
genre: opera
isrc code: USB8U1509045
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T12:30:40+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7b0f56c41ac1ae957b648e968f695e7c83bc86647e27b8733de384ce8dde925e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1509045
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0f56c41ac1ae957b648e968f695e7c83bc86647e27b8733de384ce8dde925e. 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/USB8U1509045.
  date published: 2026-07-08T08:56:20Z
audio: Norma: Act I: Vanne, e li cela entrambi (Norma, Clotilde)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.337
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
    value: 0.372
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.959
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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Norma: Act II: Dammi quel ferro! (All)
type: MusicRecording
duration: PT3M39S
duration ms: 219080
explicit: false
by artist: Vincenzo Bellini
by artist: Mario del Monaco
by artist: Nicola Zaccaria
by artist: Maria Callas
by artist: Giulietta Simionato
by artist: Gabriella Carturan
by artist: Giuseppe Zampieri
by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Antonino Votto
in album: Bellini: Norma (1955)
  type: MusicAlbum
  date published: 2015-02-01
genre: opera
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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
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  date published: 2026-07-08T03:22:41Z
audio: Norma: Act II: Dammi quel ferro! (All)
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Norma: Act I: Ah si, fa' core, abbracciami (Norma, Adalgisa)
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by artist: Vincenzo Bellini
by artist: Mario del Monaco
by artist: Nicola Zaccaria
by artist: Maria Callas
by artist: Giulietta Simionato
by artist: Gabriella Carturan
by artist: Giuseppe Zampieri
by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Antonino Votto
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genre: opera
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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
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  date published: 2026-07-08T03:20:19Z
audio: Norma: Act I: Ah si, fa' core, abbracciami (Norma, Adalgisa)
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Norma: Act II: Deh! Non volerli vittime (All)
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by artist: Mario del Monaco
by artist: Nicola Zaccaria
by artist: Maria Callas
by artist: Giulietta Simionato
by artist: Gabriella Carturan
by artist: Giuseppe Zampieri
by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Antonino Votto
in album: Bellini: Norma (1955)
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genre: opera
isrc code: USB8U1509072
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additional property: CopyrightStatus
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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: 2026-07-08T03:53:27Z
audio: Norma: Act II: Deh! Non volerli vittime (All)
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Donizetti: Poliuto
type: MusicAlbum
date published: 2015-02-01

A Discographic Career
type: MusicAlbum
date published: 2015-02-01

Verdi: Un ballo in maschera
type: MusicAlbum
date published: 2015-02-01

Verdi: La traviata (Live)
type: MusicAlbum
date published: 2015-03-01

Ettore Bastianini: A Discographic Career (Recorded 1955-1962)
type: MusicAlbum
date published: 2015-01-01
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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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    date published: 2026-07-08T03:20:19Z
  audio: Il barbiere di Siviglia: Act I: Largo al factotum della citta
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track: Un ballo in maschera: Act I: Alla vita che t'arride
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  by artist: Orchestra Del Teatro Alla Scala, Milano
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
    type: PropertyValue
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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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    date published: 2026-07-08T03:20:19Z
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track: Il barbiere di Siviglia: Act I: All'idea di quel metallo
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  subject of: OpenTimestamps Proof of Existence
  audio: Il barbiere di Siviglia: Act I: All'idea di quel metallo
track: Rigoletto: Act II: Povero Rigoletto!
track: Rigoletto: Act II: Cortigiani, vil razza dannata
track: Il trovatore: Act IV: Udiste? Come albeggi - Qual voce!

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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
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description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5b04121742e078f559213743ba9a8ca3a501cf771d6eb242f7934ecb2c84b1. 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/ITCC51101602.
date published: 2026-07-08T03:20:19Z

Il barbiere di Siviglia: Act I: All'idea di quel metallo
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Rigoletto: Act II: Povero Rigoletto!
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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Rigoletto: Act II: Cortigiani, vil razza dannata
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Callas, Maria: Liebeslieder
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track: Turandot, Act I: Signore, ascolta!
track: Andrea Chenier, Act III: La mamma morta
track: Gianni Schicchi: O mio babbino caro
track: La Wally, Act I: Ebben? Ne andro lontana
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subject of: OpenTimestamps Proof of Existence
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audio: Andrea Chenier, Act III: La mamma morta
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Gianni Schicchi: O mio babbino caro
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subject of: OpenTimestamps Proof of Existence
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audio: Gianni Schicchi: O mio babbino caro
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La Wally, Act I: Ebben? Ne andro lontana
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T15:41:10Z
audio: La Wally, Act I: Ebben? Ne andro lontana
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Lucia di Lammermoor, Act III: Il dolce suono mi colpi, "Mad Scene"
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Lucia di Lammermoor, Act III: Il dolce suono mi colpi, "Mad Scene"
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Parsifal, Act II: Grausamer! Fuhlst du im Herzen
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Parsifal, Act II: Grausamer! Fuhlst du im Herzen
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Tristan und Isolde, Act III: Dolce e calmo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Tristan und Isolde, Act III: Dolce e calmo
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Puccini, G.: Manon Lescaut
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date published: 2010-01-26

Donizetti: Lucia di Lammermoor
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date published: 2015-01-01

Verdi: Rigoletto (Callas, Di Stefano, Gobbi / La Scala) (1955)
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date published: 1955

Verdi: Macbeth (Live)
type: MusicAlbum
date published: 2015-02-01

Absolute Masterworks - Opera
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date published: 2013-08-27

Verdi: Forza Del Destino (La) (Callas, Tucker, Serafin) (1954)
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track: Il Barbiere di Siviglia: Ecco, ridente in cielo - Highlights
track: Il Barbiere di Siviglia: Ah! che ne dite? - Highlights
track: Il Barbiere di Siviglia: Ehi, Fiorello? - Highlights
track: Il Barbiere di Siviglia: Largo al factotum
track: Il Barbiere di Siviglia: Ah, ah! che bella vita! - Highlights
track: Il Barbiere di Siviglia: All'idea di quel metallo - Highlights
track: Il Barbiere di Siviglia: Mi par d'esser con la testa - Highlights

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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

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date published: 2026-07-02T05:09:12Z

Il Barbiere di Siviglia: La calunnia è un venticello - Highlights
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Il Barbiere di Siviglia: Ecco, ridente in cielo - Highlights
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
audio: Il Barbiere di Siviglia: Ecco, ridente in cielo - Highlights
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Il Barbiere di Siviglia: Ah! che ne dite? - Highlights
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by artist: Enzo Dara
by artist: Marilyn Horne
by artist: Leo Nucci
by artist: Paolo Barbacini
by artist: Riccardo Chailly
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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: Il Barbiere di Siviglia: Ah! che ne dite? - Highlights
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Il Barbiere di Siviglia: Ehi, Fiorello? - Highlights
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by artist: Gioachino Rossini
by artist: Samuel Ramey
by artist: Enzo Dara
by artist: Marilyn Horne
by artist: Leo Nucci
by artist: Paolo Barbacini
by artist: Riccardo Chailly
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genre: classical
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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: Il Barbiere di Siviglia: Ehi, Fiorello? - Highlights
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Il Barbiere di Siviglia: Largo al factotum
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by artist: Riccardo Chailly
by artist: Leo Nucci
by artist: Marilyn Horne
by artist: Samuel Ramey
by artist: Enzo Dara
by artist: Paolo Barbacini
by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
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genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: Il Barbiere di Siviglia: Largo al factotum
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Il Barbiere di Siviglia: Ah, ah! che bella vita! - Highlights
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by artist: Marilyn Horne
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by artist: Paolo Barbacini
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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: Il Barbiere di Siviglia: Ah, ah! che bella vita! - Highlights
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Il Barbiere di Siviglia: All'idea di quel metallo - Highlights
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by artist: Enzo Dara
by artist: Marilyn Horne
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by artist: Paolo Barbacini
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genre: classical
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additional property: OTSVerificationAPI
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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: Il Barbiere di Siviglia: All'idea di quel metallo - Highlights
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Il Barbiere di Siviglia: Mi par d'esser con la testa - Highlights
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by artist: Enzo Dara
by artist: Marilyn Horne
by artist: Leo Nucci
by artist: Paolo Barbacini
by artist: Orchestra Del Teatro Alla Scala, Milano
by artist: Riccardo Chailly
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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: 2026-07-08T03:20:19Z
audio: Il Barbiere di Siviglia: Mi par d'esser con la testa - Highlights
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track: Il Barbiere di Siviglia: Act I: Piano, pianissimo - Highlights
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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
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track: Il Barbiere di Siviglia: Ecco, ridente in cielo - Highlights
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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
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  subject of: OpenTimestamps Proof of Existence
  audio: Il Barbiere di Siviglia: Ehi, Fiorello? - Highlights
track: Il Barbiere di Siviglia: Largo al factotum
track: Il Barbiere di Siviglia: Ah, ah! che bella vita! - Highlights
track: Il Barbiere di Siviglia: All'idea di quel metallo - Highlights
track: Il Barbiere di Siviglia: La calunnia è un venticello - Highlights
track: Il Barbiere di Siviglia: Mi par d'esser con la testa - Highlights
track: Il Barbiere di Siviglia: Don Basilio! - Highlights

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CopyrightChainExplorerURL
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OTSHash
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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 0xab54ecd35ecad90d6f9d4bffa77062bf4d470ab2a4fbd4ede1c220b8cc65c8c8. 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/USSM10409852.
date published: 2026-07-08T08:56:20Z

Il Barbiere di Siviglia: Ehi, Fiorello? - Highlights
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Il Barbiere di Siviglia: Largo al factotum
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by artist: Leo Nucci
by artist: Marilyn Horne
by artist: Samuel Ramey
by artist: Enzo Dara
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by artist: Milan La Scala Chorus
by artist: Orchestra Del Teatro Alla Scala, Milano
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genre: classical
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: Il Barbiere di Siviglia: Largo al factotum
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Il Barbiere di Siviglia: Ah, ah! che bella vita! - Highlights
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by artist: Paolo Barbacini
by artist: Riccardo Chailly
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genre: classical
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Il Barbiere di Siviglia: Ah, ah! che bella vita! - Highlights
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Il Barbiere di Siviglia: All'idea di quel metallo - Highlights
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by artist: Paolo Barbacini
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genre: classical
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subject of: OpenTimestamps Proof of Existence
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audio: Il Barbiere di Siviglia: All'idea di quel metallo - Highlights
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Il Barbiere di Siviglia: La calunnia è un venticello - Highlights
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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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Il Barbiere di Siviglia: Mi par d'esser con la testa - Highlights
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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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Il Barbiere di Siviglia: Don Basilio! - Highlights
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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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Giordano: Andrea Chenier (La Scala) (1928-1931)
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Bellini: Norma (Callas, Filippeschi) (1953)
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Callas, Maria: Portrait (A) (1949-1954)
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Bach, J.S.: Prelude and Fugue, Bwv 566 / Air On A G String / Brahms, J.: Intermezzo in A Major (Coming To the Mill - A Musical Evening for L.S. Lowry)
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Puccini: Madama Butterfly (Gigli, Dal Monte) (1939)
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Maria Callas Sings Casta Diva
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Donizetti, G.: Lucia Di Lammermoor (Callas) (1954)
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Verdi: Traviata (La) (Di Stefano, Stella) (1955)
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Donizetti: Il Pigmalione (1960)
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Giacomo Puccini, Vol. 2 (1953)
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Puccini: Tosca (Callas, Di Stefano) (1953)
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Verdi: Il trovatore (1956)
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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: Trovatore (Il) (Callas, Di Stefano, Karajan) (1956)
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Maria Callas Sings Verdi
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track: La forza del destino: Act IV Pace, pace, mio Dio!
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  subject of: OpenTimestamps Proof of Existence
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Wilhelm Furtwangler Conducts Richard Wagner's Der Ring des Nibelungen (Milan 1950)
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Verdi: Ballo in Maschera (Un) (Callas, Di Stefano, Gobbi) (1956)
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Verdi: La battaglia di Legnano; La forza del destino
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