Titta Ruffo (9 June 1877 – 5 July 1953), born as Ruffo Cafiero (double forename) Titta, was an Italian operatic baritone who had a major international singing career. Known as the "Voce del leone" ("v
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7152e3036ece999d1925ffb027f54bc8d52e0abb09793e84d90fd28a0b10181. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17f45507-9eb2-40d5-ba27-371bbe822da4.json and https://artists.proofprofile.net/proofs/artist/17f45507-9eb2-40d5-ba27-371bbe822da4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aa35d1d58d0d89dfc771486b2b9c057c4abdfd6eff24cb3c5dfb314227f8ca. 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/USB8U2300351.
Enrico Caruso: 21 Greatest Opera Recordings
Enrico Caruso - The Complete Victor Recordings
La Favorita: Act IV: Spirto gentil, ne' sogni miei (Romanza)
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Rigoletto (1904 Recording): Act IV: La donna è mobile
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La forza del destino: Act III: Solenne in quest'ora
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Rigoletto (1908 Recording): Act I: Questa o quella
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L'elisir d'amore: Act II: Una furtiva lagrima ... Un solo instante
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Tosca (1904 Recording): Act III: E lucevan le stelle
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Tosca (1904 Recording): Act I: Recondita armonia
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Cavalleria rusticana (1904 Recording): O Lola (Siciliana)
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I Pagliacci (Remastered): Act I: Recitar! mentre preso dal delirio ... Vesti la giubba
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Andrea Chénier: Act I: Un dì all'azzurro spazio (Improvviso)
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Don Pasquale: Act III: Com'è gentil (Serenata)
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I Pagliacci: Act I: Recitar! mentre preso dal delirio... Vesti la giubba
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Gli Ugonotti (Les Huguenots) (Remastered): Act I: Ah, qual soave vision ... Bianca al par di neve
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Cavalleria rusticana: Intanto amici ... Viva il vino (Brindisi)
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Don Sebastiano: Act II: Deserto in terra
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6088385b2164a82690dfc46e2da96f815fdf16fe555659c0cd5f617f720926e. 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/USBC10301449.
Madama Butterfly: Act I: Un po' di vero c'è ... Oh quanti occhi fisi
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I pagliacci, Mario Del Monaco: Act II- " Ridi Pagliaccio"
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Otello & Jago (Incisioni storiche dal 1902 al 1951)
Voce Históricas del Teatro Real de Madrid
Scott's Music Box (2012 Remastered Version)
Great Voices of the Century: Titta Ruffo
Opera Arias (Tenor): Gigli, Beniamino - Donizetti, G. / Puccini, G. / Drigo, R. / Verdi, G. (Complete Collection of Opera Highlights, Vol. 2)
La forza del destino, Act III: Solenne in quest ora
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Martha, Act III: Ach so fromm (M'appari tutt'amor)
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Great Singers Vol. 2 (Recorded 1903-1939)
The Symposium Opera Collection, Vol. 18 (1906-1927)
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Titta Ruffo - The early recordings 1906 - 1912
Massenet: Thaïs: Ecco dunque l'orribil città
Leoncavallo: Zazà: Zazà, piccola zingara
Ponchielli: La Gioconda: Pescator, affonda l'esca
Gounod: Faust, CG 4: Valentin’s Prayer (Dio possente, Dio d’amor)
The Italian-American Immigrant Song (1910-1940), Vol.4
Opera Highlights - Bizet, G. / Leoncavallo, R. / Puccini, G. / Delibes, L. / Saint-Saens, C. / Rossini, G.
Great Singers at the Gran Teatro Del Liceo