1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8044f8a3a08ab9104c4947110844d90e7a5fd822088fc48b9330a57ff8269481. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75fbcd1b-705b-40b1-9fcc-6f98bdf63cc7.json and https://artists.proofprofile.net/proofs/artist/75fbcd1b-705b-40b1-9fcc-6f98bdf63cc7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Carmen, Act II: José's Aria "Il fior che avevi a me tu dato"
Tosca, Act III: Cavaradossi’s Aria "E lucevan le stelle"
Andrea Chénier, Act I: L'improvviso "Un di all'azzurro spazio"
Il Trovatore, Act III: Manrico’s Aria "Ah! sì, ben mio, coll'essere Io tuo, tu mia consorte"
Otello, Act IV: Otello's Death "Niun mi tema s'anco armato mi vede"
Cavalleria Rusticana: Introduction and Turiddu’s Song "O Lola ch’ai di latti la cammisa"
Cavalleria Rusticana: Scene and Duet of Santuzza and Turiddu "Tu qui, Santuzza?"
Cavalleria Rusticana: Turiddu's Farewell: "Mamma, quel vino é generoso"
Zurab Sotkilava Sings Famous Russian Tenor Arias & Folksongs
The Queen of Spades (Pique Dame): Scene (Herman, Lisa)
Russian Vocal School. Zurab Sotkilava - vol.1
Russian Folk Song. "Encircled By The Steppe"
Russian Folk Song. "The Bell Thunders Monotonously"
Y.Feldman. "Coachman, Don't Drive The Horses"
G.Chubinishvili. "She Didn't Bestow A Kiss"
S.Rachmaninov. "Sing Not To Me, Beautiful Maiden"
N.Rimsky-Korsakov. Opera "Sadko" (Song Of The Indian Guest)
P.Tchaikovsky. Opera "Queen Of Spades" (Scene from Act 1)
Russian Vocal School. Zurab Sotkilava - vol.2
G.Verdi. "Il Trovatore" (Duet of Azucena and Manrico, Azucena - I.Arkhipova)
G.Verdi. "Otello" (Duet of Otello and Iago, Iago - O.Klenov)
G.Verdi. "Otello" (Scene of Otello's Death)
G.Verdi. "Don Carlos" (Scene of Rodrigo and Carlos, Rodrigo - V.Redkin)
P.Mascagni. "Cavalleria Rusticana" (Duet of Santuzza and Turiddu, Santuzza - T.Tatishvili)
P.Mascagni. "Cavalleria Rusticana" (Turiddu's song)
Russian Vocal School. Zurab Sotkilava - vol.3
Russian Folk Song. "I'm Heading For The Road Alone"
Russian Folk Song. "The Bachelor's Song"
L.Malashkin. "Oh, Could I In Song Tell My Sorrow"
Russian Vocal School. Zurab Sotkilava - vol.4
Georgian Folk Song. "Sisatura" (Lullaby)
P.Tchaikovsky. "Pimpinella" (Florentine song)
G.Paisiello. "La Molinara" (Aria of Baron Calloandro)
U.Giordano. "Andrea Chenier" (Andrea's improvisation)
G.Verdi. "Otello" (Scene of Otello's death)
G.Verdi. "Il Trovatore" (Aria of Manrico)
O.Taktakishvili. "Mingrelian Songs" (Part 1)
O.Taktakishvili. "Mingrelian Songs" (Part 2)
Zurab Sotkilava Sings Famous Italian And Spanish Tenor Arias
Andrea Chenier, Act I: Andrea Chenier - Un Di All'azzurro Spazio
Tosca, Act I: Cavaradossi - Recondita Armonia
Othello, Act Iii: Othello - Dio! Mi Potevi Scagliar
Tosca, Act Iii: Cavaradossi - E Lucevan Le Stelle
La Tabernera Del Puerto: Leandro - No Puede Ser!
Cavalleria Rusticana: Turridu's Farewell - Mamma, Quel Vino É Generoso
L'arlesiana: Federico - Ela Solita Storia Del Pastore
Manon Lescaut, Act Ii: Des Grieux - Ah! Manon, Mi Tradisce Il Tuo
Manon Lescaut, Act Iii: Des Grieux - Ah! Non V'avvicinate..!
Zurab Sotkilava sings Famous Russian Tenor Arias & Folksongs
The Queen of Spades (Pique Dame) - Scene (Herman, Lisa)
Zurab Sotkilava sings Famous Italian and Spanish Tenor Arias
Andrea Chenier, Act I: Andrea Chenier - Un di all'azzurro spazio
Othello, Act III: Othello - Dio! Mi potevi scagliar
La Tabernera del Puerto: Leandro - No puede ser!
Cavalleria Rusticana: Turridu's Farewell - Mamma, quel vino é generoso
L'Arlesiana: Federico - Ela solita storia del pastore
Manon Lescaut, Act II: Des Grieux - Ah! Manon, mi tradisce il tuo
Manon Lescaut, Act III: Des Grieux - Ah! Non v'avvicinate..!
Russian Vocal School: Zurab Sotkilava (1974)
12 Romances, Op. 60: No. 6, Nochi bezumniye (Frenzied Nights)
6 Songs, Op. 8 (text by H. Heine): 6 Songs, Op. 8: No. 5, Son [the Dream]
Carmen, WD 31, Carmen, Act II: Flower Song. La fleur que tu mavais jetee
L'amor contrastato, "La molinara", Act III: Nel cor più non mi sento
Andrea Chénier, Andrea Chenier, Act I: Un di all'azzurro spazio
Russian Vocal School (Concert, Dedicated to the 90th Birthday of Ivan S. Kozlovksy): Zurab Sotkilava
Vykhozhu odin ja na dorogu (I'm Heading for the Road Alone)
O, eli b mog vyrazit v zvuk (Oh, Could I in Song Tell My Sorrow)
Potseluem ne daril (She Didn't Bestow a Kiss)
Canciones Clasicas Españolas, Vol. 1: No. 5, Del cabello mas sutil
Russian Vocal School (Russian Folk and Georgian Songs): Zurab Sotkilava
Step da step krugom (Encircled by the Steppe)
Odnozvuchno gremit kolokolchik (the Bell Thunders Monotonously)
Jamschik, ne goni loshadej! (Coachman, Spare Your Horses)
Potseluem ne daril (She Didn't Bestow a Kiss): Potseluem ne darila [She Didn't Bestow a Kiss]
6 Songs, Op. 4 (text by a. Pushkin): 6 Songs, Op. 4: No. 4, Ne poy, krasavitsa, pri mne [Sing not to me, beautiful maiden]
12 Songs, Op. 14 (text by F.I. Tyutchev): 12 Songs, Op. 14: No. 11, Vesenniye vodi [Spring Waters]
The Queen of Spades (Pique Dame), Op. 68, the Queen of Spades, Op. 68, Act I: Ne nado zatvorit! Ostav
O primavera! (O Spring): O primavera! [version for voice and orchestra]
Serenade (Version for voice and orchestra)
Musica Proibita (Version for voice and orchestra)
Aprile (Version for voice and orchestra)
Santa Lucia luntana (Version for voice and orchestra)
Il trovatore, Il Trovatore, Act IV Scene 3: Madre, non dormi? (Sung in French)
I Love You so: Ti voglio tanto bene (version for voice and orchestra) [Version for voice and orchestra]
Don Carlo, Act I Scene 1: E lui! Desso … L'Infante! - Dio, che nell'alma infondere
Cavalleria rusticana: Tu qui, Santuzza? - Ah! Lo vedi!
Cavalleria rusticana: A casa, a casa - Brindisi: Viva il vino
O primavera! (version for voice and orchestra)
Serenade (version for voice and orchestra)
Musica Proibita (version for voice and orchestra)
Aprile (version for voice and orchestra)
Santa Lucia luntana (version for voice and orchestra)
Le trouvere: Il Trovatore, Act IV Scene 3: Madre, non dormi?
I Love You So (version for voice and orchestra): Ti voglio tanto bene (version for voice and orchestra)
Don Carlo, Act I Scene 1: E lui! Desso … l'Infante! - Dio, che nell'alma infondere
Cavalleria rusticana: Tu qui, Santuzza? - Ah! lo vedi!
Odnozvuchno gremit kolokolchik (The Bell Thunders Monotonously)
Potseluem ne darila (She Didn't Bestow a Kiss)
6 Songs, Op. 4: No. 4. Ne poy, krasavitsa, pri mne (Sing not to me, beautiful maiden)
12 Songs, Op. 14: No. 11. Vesenniye vodi (Spring Waters)
The Queen of Spades, Op. 68, Act I: Ne nado zatvorit! Ostav
12 Romances, Op. 60: No. 6. Nochi bezumniye (Frenzied Nights)
Carmen: Carmen, Act II: Flower Song: La fleur que tu mavais jetee
L'amor contrastato, "La molinara", Act III: Nel cor piu non mi sento
Andrea Chenier, Act I: Un di all'azzurro spazio
Canciones Clasicas Espanolas, Vol. 1: No. 5. Del cabello mas sutil
Iolanta, Op. 69, Scene 6: b. Vaudemont's Romance
Eugene Onegin, Op. 24, Act II: "Kuda, kuda vï udalilis" (Lensky)
The Queen of Spades, Op. 68: Scene (Herman, Liza)
Cavalleria Rusticana: Turiddu’s Siciliana "O Lola ch’ai di latti la cammisa"
Pietro Mascagni: Cavalleria Rusticana (Live)
Cavalleria Rusticana: Duet of Santuzza and Turiddu "Tu qui, Santuzza?"
Cavalleria Rusticana: Lola’s Stornello "Fior di giaggiolo"
Cavalleria Rusticana: Duet of Santuzza and Turiddu "Ah! lo vedi"
Cavalleria Rusticana: Chorus "A casa, a casa, amici"
Grand Choir of All-Union National Radio Service and Central Television Networks
Cavalleria Rusticana: Turiddu’s Brindisi "Viva il vino spumeggiante"
Cavalleria Rusticana: Finale. Alfio "A voi tutti salute!"
Cavalleria Rusticana: Finale. Turiddu "Compar Alfio"
Cavalleria Rusticana: Finale. Turiddu "Mamma, quel vino è generoso"
The Most Essential Classical Music from Italy
The 100 Best Classical Masterworks: Great Opera Moments
Andrea Chenier: Act I - Aria: "Un di all'azzurro spazio"
Tosca: Act I: Aria - "Recondita armonia" - Cavaradossi