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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3933122f54e071205713184473803ac571e351c018a1688906dc49c14d6d6629. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f067fed-cc74-4fed-b649-86b272322899.json and https://artists.proofprofile.net/proofs/artist/2f067fed-cc74-4fed-b649-86b272322899.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Two Widows, JB 1:108, Act I, Scene 1: "A Fine Morning" (Karolina)
Two Widows, JB 1:108, Act I, Scene 2: "Oh, Good Morning, Dear Causin!" (Karolina, Anežka)
Two Widows, JB 1:108, Act I: "I Rule Independently" (Karolina)
Two Widows, JB 1:108, Act I: "Well Then, What Would You Have Me Do?" (Karolina, Anežka)
Two Widows, JB 1:108, Act I, Scene 3: "Good Morning, Gracious Lady!" (Karolina, Mumlal)
Two Widows, JB 1:108, Act I, Scene 3: "Our Good and Gracious Lady Feels Sympathy for Poachers" (Karolina, Anežka, Mumlal)
Two Widows, JB 1:108, Act I, Scene 3: "His Only Redeeming Grace Is That He Misses Everything!" (Karolina, Anežka, Mumlal)
Two Widows, JB 1:108, Act I, Scene 4: "If He Brings Here Now, What Then?" (Karolina, Anežka)
Two Widows, JB 1:108, Act I, Scene 5: "Will I Wander Here Long" (Ladislav Podhájský, Mumlal)
Two Widows, JB 1:108, Act I, Scene 6: "Everything Is in Order, Gracious Lady" (Karolina, Anežka, Mumlal)
Two Widows, JB 1:108, Act I, Scene 7: "The Prisoner Is at the Door!" (Ladislav Podhájský, Mumlal, Karolina, Anežka)
Two Widows, JB 1:108, Act I, Scene 7: "My ladies, I beg your forgiveness!" (Karolina, Anežka, Ladislav Podhájský, Mumlal)
Two Widows, JB 1:108, Act I, Scene 7: "What Do You Want?" (Karolina, Anežka, Ladislav Podhájský, Mumlal)
Two Widows, JB 1:108, Act I, Scene 7: "You Little Beast" (Karolina, Anežka, Ladislav Podhájský, Mumlal)
Two Widows, JB 1:108, Act I: "Look, Mumlal, We´ve Got You Here… Divine Love, a True Gift" (Karolina, Anežka, Ladislav Podhájský, Mumlal, Toník, Lidunka)
Two Widows, JB 1:108, Act II: "Overture II"
Two Widows, JB 1:108, Act II, Scene 1: "When May Comes Calling" (Ladislav Podhájský)
Two Widows, JB 1:108, Act II, Scene 1: "Fine Idea Keeping That Man Here" (Karolina, Anežka, Mumlal)
Two Widows, JB 1:108, Act II, Scene 2: "There Is No More Doubt… Decided, Finished" (Karolina, Anežka)
Two Widows, JB 1:108, Act II, Scene 3: "A Poem!" (Anežka)
Two Widows, JB 1:108, Act II, Scene 3: "Do You Want to Keep Fleeing from Me" (Anežka, Ladislav Podhájský)
Two Widows, JB 1:108, Act II, Scene 3: "Ah, How Cruelly My Feigned Resistance" (Anežka, Ladislav Podhájský)
Two Widows, JB 1:108, Act II: "What Do You Want to Tell Me?" (Anežka, Ladislav Podhájský)
Two Widows, JB 1:108, Act II, Scene 3: "But That Was Not in the Letter, Sir" (Anežka, Ladislav Podhájský)
Two Widows, JB 1:108, Act II, Scene 4: "Halt, Sir!" (Karolina, Anežka, Ladislav Podhájský)
Two Widows, JB 1:108, Act II, Scene 5: "They Are Leaving Together to Have Fun" (Anežka)
Two Widows, JB 1:108, Act II, Scene 5: "Oh, What a Beautiful Day" (Anežka)
Two Widows, JB 1:108, Act II, Scene 6: "Fine! Wonderful!" (Anežka, Mumlal)
Two Widows, JB 1:108, Act II, Scene 6: "When Anything at All Bothers Me" (Mumlal)
Two Widows, JB 1:108, Act II, Scene 6: "My Beloved, Worthy Friend" (Anežka, Mumlal)
Two Widows, JB 1:108, Act II, Scene 7: "What´s This, Girl, What’s This?" (Mumlal, Toník, Lidunka)
Two Widows, JB 1:108, Act II, Scene 8: "Mumlal, Go and Grumble Like a Bear" (Karolina, Ladislav Podhájský, Mumlal)
Two Widows, JB 1:108, Act II, Scene 9: "Oh! Ah, What a Surprise" (Karolina, Anežka, Ladislav Podhájský, Mumlal)
Two Widows, JB 1:108, Act II, Scene 9: "Gracious Lady!" (Karolina, Ladislav Podhájský, Mumlal)
Two Widows, JB 1:108, Act II: "I Hereby Bring the Glorious News" (Karolina, Mumlal)
Two Widows, JB 1:108, Act II: "The Lord God Must Love Us" (Karolina)
Two Widows, JB 1:108, Act II: "Polka (dance) - The Lord God Must Love Us"
Libuše, JB 1:102, Act I, Scene 1: You, Krok´s Illustrious Daughter (Libuše, kněžna česká, Krasava, Lutoborova dcera, Radmila, sestra obou bratří)
Libuše, JB 1:102, Act I, Scene 2: I Cannot Join Them! (Krasava, Lutoborova dcera, Radmila, sestra obou bratří)
Libuše, JB 1:102, Act I, Scene 2: Alas That Between Sons Such Confliets... (Chrudoš od Otavy, bratr Šťáhlava, Šťáhlav na Radbuze, bratr Chrudoše, Lutobor z Dobroslavského Chlumce, jejich strý
Libuše, JB 1:102, Act I, Scene 3: The Procession: The Snake Is not Here (Libuše, kněžna česká, Chrudoš od Otavy, bratr Šťáhlava, Šťáhlav na Radbuze, bratr Chrudoše, Lutobor z Dobroslavského C
Libuše, JB 1:102, Act II, Scene 1: Libuše´s Marriage - Water the Horses Now and Wait for Me! (Šťáhlav na Radbuze, bratr Chrudoše, Lutobor z Dobroslavského Chlumce, jejich strýc, Krasava, Luto
Libuše, JB 1:102, Act II, Scene 2: My Uncle Bid Me to My Father´s Grave (Chrudoš od Otavy, bratr Šťáhlava, Šťáhlav na Radbuze, bratr Chrudoše, Lutobor z Dobroslavského Chlumce, jejich strýc,
Libuše, JB 1:102, Act II, Scene 3: Heya! Heya! Without Rest Onward (Přemysl ze Stadic, Čtyři ženci - za scénou, Čtyři ženci - za scénou, Čtyři ženci - za scénou, Čtyři ženci - za scénou)
Libuše, JB 1:102, Act II, Scene 4: The Work Is Finished (Přemysl ze Stadic)
Libuše, JB 1:102, Act II, Scene 5: From Libuše We Bring You Greetings (Přemysl ze Stadic, Lutobor z Dobroslavského Chlumce, jejich strýc, Radovan od Kamena Mosta)
Libuše, JB 1:102, Act III, Scene 1: Peace Is Made Again Between Two Brothers (Libuše, kněžna česká, Chrudoš od Otavy, bratr Šťáhlava, Šťáhlav na Radbuze, bratr Chrudoše, Lutobor z Dobroslavsk
Libuše, JB 1:102, Act III, Scene 2: He Comes! He Still Remains Hidden... (Libuše, kněžna česká)
Libuše, JB 1:102, Act III, Scene 3: Welcome to Us (Libuše, kněžna česká)
Libuše, JB 1:102, Act III, Scene 4: Did She Not Say That All the Power Now... (Chrudoš od Otavy, bratr Šťáhlava, Šťáhlav na Radbuze, bratr Chrudoše, Lutobor z Dobroslavského Chlumce, jejich s
Libuše, JB 1:102, Act III, Scene 5: Hail, Stronghold Vyšehrad (Libuše, kněžna česká, Přemysl ze Stadic, Chrudoš od Otavy, bratr Šťáhlava, Šťáhlav na Radbuze, bratr Chrudoše, Lutobor z Dobrosl
Libuše, JB 1:102, Act III: Libuše´s Prophecy with Six Pictures from Bohemia´s History - O Gods Almighty (Libuše, kněžna česká)
Libuše, JB 1:102, Act III: Libuše´s Prophecy, Picture I, A Hero Comes (Libuše, kněžna česká)
Libuše, JB 1:102, Act III: Libuše´s Prophecy, Picture II, Behold! Another Storm Is Threatening (Libuše, kněžna česká)
Libuše, JB 1:102, Act III: Libuše´s Prophecy, Picture III, And There a Crowd of Stalwart Noblemen (Libuše, kněžna česká)
Libuše, JB 1:102, Act III: Libuše´s Prophecy, Picture IV, But Hear! How Evil Storm Winds Roar and Wail (Libuše, kněžna česká)
Libuše, JB 1:102, Act III: Libuše´s Prophecy, Picture V, Behold! Now from the Misty Veils Just Formed (Libuše, kněžna česká)
Libuše, JB 1:102, Act III: Libuše´s Prophecy, Picture VI, The Royal Castle in Prague Czech People Shall Never Perish (Libuše, kněžna česká)
Adriana Lecouvreur: Ecco, respiro appena (Adriana)
Adriana Lecouvreur: Poveri fiori (Adriana)
Edgar, SC 62: Adio mio dolce Amor (Fidelia)
Turandot, SC 91: In questa reggia (Turandot)
Manon Lescaut, SC 64: Sola, perduta, abbandonata (Manon)
Cavalleria rusticana: Inneggiamo, il Signor non e morto (Santuzza)
Cavalleria rusticana: Voi lo sapete, o mamma (Santuzza)
La forza del destino: La vergine degli angeli (Leonora)
Don Carlos: O don fatale, o don crudel (Eboli)
The Brandenburgers in Bohemia, Act I, Scene 1: "But I Say You" (Volfram Olbramovič, Oldřich Rokycanský)
The Brandenburgers in Bohemia, Act I, Scene 2: "Get on Horseback!" (Volfram Olbramovič, Oldřich Rokycanský, Junoš)
The Brandenburgers in Bohemia, Act I, Scene 3: "What a Bustle?" (Ludiše)
The Brandenburgers in Bohemia, Act I, Scene 4: "And the Sweet, Sweet Love Making!… You Here, My Lord?" (Jan Tausendmark, Ludiše)
The Brandenburgers in Bohemia, Act I, Scene 5: "Heavens! Call the People!… O, God Arise to Our Help" (Ludiše, Vlčenka, Děčana)
The Brandenburgers in Bohemia, Act I, Scene 6: "What You Will Find" (Jan Tausendmark)
The Brandenburgers in Bohemia, Act I, Scene 7: "You Have Refused to Give in Daytime" (Jíra)
The Brandenburgers in Bohemia, Act I: "Ballet"
he Brandenburgers in Bohemia, Act I, Scene 8: "Now at Last Came Our Time!" (Jíra)
The Brandenburgers in Bohemia, Act I, Scene 9: "Help Us, Dear People!" (Jíra, Ludiše)
he Brandenburgers in Bohemia, Act I, Scene 10: "Eh, Your Flight Was in Vain!" (Jan Tausendmark, Varneman, Jíra, Ludiše, Vlčenka, Děčana)
The Brandenburgers in Bohemia, Act I: "How Much Will You Pay?" (Jan Tausendmark, Jíra, Ludiše, Vlčenka, Děčana)
The Brandenburgers in Bohemia, Act I, Scene 11: "Retreat, Rabble!" (Volfram Olbramovič, Oldřich Rokycanský, Junoš, Jan Tausendmark, Jíra)
The Brandenburgers in Bohemia, Act I: "And So, You, Prague People" (Volfram Olbramovič, Oldřich Rokycanský, Junoš, Jan Tausendmark, Jíra)
The Brandenburgers in Bohemia, Act II, Scene 1: "Take Leave from Your Homeland Now" (Old villager)
The Brandenburgers in Bohemia, Act II: "O Lord into the Dust We’re Falling" (Old villager)
The Brandenburgers in Bohemia, Act II: "That Noise Beyond There!" (Old villager)
The Brandenburgers in Bohemia, Act II, Scene 2: "Stand Still! Not One More Step Further!" (Old villager, Varneman, Town crier)
The Brandenburgers in Bohemia, Act II, Scene 3: "An Order of the Prince" (Varneman, Town crier)
The Brandenburgers in Bohemia, Act II: "Just Wait a While, Don't Exult as Yet!" (Town crier)
The Brandenburgers in Bohemia, Act II, Scene 4: "Prosecutor! Who Are the Witnesses of the Truth of Your Words?" (Volfram Olbramovič, Jíra, Jan Tausendmark)
The Brandenburgers in Bohemia, Act II, Scene 5: "Refrain! You Fathers of the Town!" (Volfram Olbramovič, Junoš, Jan Tausendmark)
The Brandenburgers in Bohemia, Act II, Scene 6: "O, How Lovely Are the Scenes of Nature!" (Ludiše, Vlčenka, Děčana)
The Brandenburgers in Bohemia, Act II: "There Is, Oh, No Beauty for Us" (Ludiše, Vlčenka, Děčana)
The Brandenburgers in Bohemia, Act II: "What a Lovely Dream" (Old villager, Volfram Olbramovič, Junoš, Ludiše)
The Brandenburgers in Bohemia, Act II, Scene 7: "Ah! Whose It This Voice!" (Junoš, Ludiše)
The Brandenburgers in Bohemia, Act II: "O How Blissful, Lovely Is This Moment" (Junoš, Ludiše)
The Brandenburgers in Bohemia, Act II, Scene 8: "Now Then My Maiden" (Ludiše, Vlčenka, Děčana, Town crier)
The Brandenburgers in Bohemia, Act III, Scene 1: "You Go Home Now!" (Jan Tausendmark, Varneman)
The Brandenburgers in Bohemia, Act III: "O Had I Never… Your Image, Maiden" (Jan Tausendmark)
The Brandenburgers in Bohemia, Act III: "Ah the Die Is Cast" (Old villager, Volfram Olbramovič, Jan Tausendmark)
The Brandenburgers in Bohemia, Act III, Scene 2: "Have You Succeeded, Dear Sir?" (Old villager, Jan Tausendmark)
The Brandenburgers in Bohemia, Act III, Scene 3: "O Thanks to God, Freedom Is Beckoning!" (Ludiše, Vlčenka, Děčana)
The Brandenburgers in Bohemia, Act III, Scene 4: "As long as We Are… Keep Silent, Please!" (Old villager, Ludiše, Vlčenka, Děčana)
The Brandenburgers in Bohemia, Act III, Scene 5: "Who Is Shouting Here?" (Town crier)
The Brandenburgers in Bohemia, Act III, Scene 6: "The Night Is Quiet" (Junoš)
The Brandenburgers in Bohemia, Act III, Scene 7: "That Is Strange... What a Sorrow" (Old villager)
The Brandenburgers in Bohemia, Act III: "In Vain Do I Look Round and Round" (Old villager, Junoš, Jíra, Town crier)
The Brandenburgers in Bohemia, Act III, Scene 8: "Here You Have Him the Murderer!" (Old villager, Junoš, Jan Tausendmark, Jíra, Ludiše, Vlčenka, Děčana)
The Brandenburgers in Bohemia, Act III, Scene 9: "We Know Now… Long Live the Truth!" (Volfram Olbramovič, Jíra, Ludiše, Vlčenka, Děčana)
Libuše, JB 1:102, Act I, Scene 1: "You, Krok’s Illustrious Daughter" (Libuše, Krasava, Radmila) - Live
Libuše, JB 1:102, Act I: "Eternal Gods, Ye That Dwell Above the Clouds" (Libuše, Krasava, Radmila) - Live
Libuše, JB 1:102, Act I: "I Cannot Join Them!" (Krasava, Radmila) - Live
Libuše, JB 1:102, Act I, Scene 2: "Alas That Between Sons Such" (Chrudoš, Šťáhlav, Lutobor, Radovan) - Live
Libuše, JB 1:102, Act I, Scene 3: "The Snake Is Not Here" (Chrudoš) - Live
Libuše, JB 1:102, Act I: "You Elders, Chieftains!" (Libuše) - Live
Libuše, JB 1:102, Act I: "I Am the Elder Son" (Libuše, Chrudoš, Šťáhlav) - Live
Libuše, JB 1:102, Act I: "Both the Kinsmen, Brothers Klenovici" (Libuše, Chrudoš, Šťáhlav, Lutobor, Radovan) - Live
Libuše, JB 1:102, Act I: "You Yourselves Have Heard How He Insulted Me" (Libuše, Radovan) - Live
Libuše, JB 1:102, Act II, Scene 1: "Water the Horses Now and Wait for Me!" (Lutobor, Krasava) - Live
Libuše, JB 1:102, Act II: "My Father, Before You Proclaim Your Severe Judgment" (Šťáhlav, Lutobor, Krasava, Radmila) - Live
Libuše, JB 1:102, Act II: "Like a Dark Cloud Chrudoš Rushed Through the Burg’s Gates" (Lutobor) - Live
Libuše, JB 1:102, Act II, Scene 2: "My Uncle Bid Me to My Father’s Grave" (Chrudoš, Krasava) - Live
Libuše, JB 1:102, Act II: "With Krasava He’s Reconciled!" (Chrudoš, Šťáhlav, Krasava, Radmila) - Live
Libuše, JB 1:102, Act II, Scene 3: "Heya! Heya! Without Rest Onward" (Four Harvesters) - Live
Libuše, JB 1:102, Act II: "The Sun Is Blazing" (Přemysl) - Live
Libuše, JB 1:102, Act II: "Nature Might Will Reward Our Labours" (Přemysl, Four Harvesters) - Live
Libuše, JB 1:102, Act II, Scene 4: "The Work Is Finished" (Přemysl) - Live
Libuše, JB 1:102, Act III, Scene 5: "But I Shall Remain Here… O, Ye Lime-Trees" (Přemysl) - Live
Libuše, JB 1:102, Act II, Scene 4, 5: "What Is This Noise?… From Libuše We Bring You Greetings" (Přemysl, Radovan) - Live
Libuše, JB 1:102, Act II: "Peace Be With You, My Father’s Quiet Gardens" (Přemysl) - Live
Libuše, JB 1:102, Act II: "In My Mind to You!" (Přemysl, Radovan) - Live
Libuše, JB 1:102, Act III, Scene 1: "Peace Is Made Again Between Two Brothers" (Libuše, Chrudoš, Šťáhlav, Lutobor, Krasava, Radmila) - Live
Libuše, JB 1:102, Act III, Scene 2: "He Comes! He Still Remains Hidden…" (Libuše, Chrudoš, Šťáhlav, Lutobor, Krasava, Radmila) - Live
Libuše, JB 1:102, Act III, Scene 3: "Welcome to Us" (Libuše) - Live
Libuše, JB 1:102, Act III, Scene 4: "Did She Not Say That All the Power…" (Chrudoš, Šťáhlav, Lutobor, Krasava) - Live
Libuše, JB 1:102, Act III, Scene 5: "Ceremonial Procession" - Live
Libuše, JB 1:102, Act III: "Hail, Stronghold Vyšehrad… O Gods, Ye, Who Are Surrounded by Glory" (Libuše, Přemysl, Chrudoš, Šťáhlav, Lutobor, Radovan, Krasava, Radmila) - Live
Libuše, JB 1:102, Act III: "I Have Learned About Two Brothers‘ Cruel Strife" (Libuše, Přemysl, Šťáhlav, Lutobor, Radovan, Krasava, Radmila) - Live
Libuše, JB 1:102, Act III: "Libuše’s Prophecy: O Gods Almighty" (Libuše, Přemysl, Chrudoš, Šťáhlav, Lutobor, Radovan, Krasava, Radmila) - Live
Smetana: Libuše. Festive Opera in 3 Acts
Libuše, JB 1:102, Act I, Scene 1: Libuše's Judgement. You, Krok's Illustrious Daughter - I Cannot Join Them (Libuše, Kněžna Česká, Krasava, Lutoborova dcera, Radmila)
Libuše, JB 1:102, Act I, Scene 2: Alas That Between Sons Such Confliets (Chrudoš od Otavy, Šťáhlav na Radbuze, Lutobor, Radovan od Kameného mosta)
Libuše, JB 1:102, Act I, Scene 3: The Procession. The Snake Is not Here (Libuše, Kněžna Česká, Chrudoš od Otavy, Šťáhlav na Radbuze, Lutobor, Radovan od Kameného mosta)
Libuše, JB 1:102, Act II, Scene 1: Libuše's Marriage. Water the horses now and wait for me! (Šťáhlav na Radbuze, Lutobor, Krasava, Lutoborova dcera, Radmila)
Libuše, JB 1:102, Act II, Scene 2: My Uncle Bid Me to My Father's Grave (Chrudoš od Otavy, Šťáhlav na Radbuze, Lutobor, Krasava, Lutoborova dcera, Radmila)
Libuše, JB 1:102, Act II, Scene 3: Heya! Heya! Without Rest Onward (Přemysl ze Stadic)
Libuše, JB 1:102, Act II, Scene 4: The Work Is Finished. But I Shall Remain Here (Přemysl ze Stadic)
Libuše, JB 1:102, Act II, Scene 5: From Libuše We Bring You Greetings (Přemysl ze Stadic, Radovan od Kameného mosta)
Libuše, JB 1:102, Act III, Scene 1: Peace Is Made Again Between Two Brothers (Libuše, Kněžna Česká, Chrudoš od Otavy, Šťáhlav na Radbuze, Lutobor, Krasava, Lutoborova dcera, Radmila)
Libuše, JB 1:102, Act III, Scene 2: He Comes! He Still Remains Hidden (Libuše, Kněžna Česká)
Libuše, JB 1:102, Act III, Scene 3: Welcome to Us (Libuše, Kněžna Česká)
Libuše, JB 1:102, Act III, Scene 4: Did She Not Say That All the Power Now (Chrudoš od Otavy, Šťáhlav na Radbuze, Lutobor, Krasava, Lutoborova dcera)
Libuše, JB 1:102, Act III, Scene 5: Hail, Stronghold of Vyšehrad - Libuše's Prophecy. O Gods (Libuše, Kněžna Česká, Přemysl ze Stadic, Chrudoš od Otavy, Šťáhlav na Radbuze, Lutobor, Radovan,
The Excursions of Mr. Brouček, JW I/7, Act II: "Buď vůle tvá jako v nebi, tak i v zemi" (Kedruta, Petřík)
Jenůfa, JW I/4, Act II: "Kde je Števuška – Tož umřel" (Jenůfa, Kostelnička)
Katya Kabanova, JW I/8: "Víš, co mi napadlo – Povídám, proč lidé nelétají" (Káťa, Varvara)