Teresa Stratas (born Anastasia Stratakis on May 26, 1938) is a retired Canadian operatic soprano and actress of Greek descent. She is especially well known for her award-winning recording of Alban Be
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 0x31d62ae834e7f9b4017f298dabaf4bd22304c89df675ee882b0ab816f3b16290. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8700e803-3a8d-47c6-9913-67126f6048f2.json and https://artists.proofprofile.net/proofs/artist/8700e803-3a8d-47c6-9913-67126f6048f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die lustige Witwe, Act I: No. 1, Introduction – Verehrteste Damen und Herren
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 0x8c5b61ac473e0691c3e3f61b6cea7863c7dc05b04d414dde4a8afd2c0a0a402c. 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/DEF057230401.
Die lustige Witwe, Act I: No. 3, Bitte meine Herr'n – Hab' in Paris mich noch nicht ganz so akklimasiert
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f2da38f8da9fe4e242e1fda995f9d1756f0f17792c983ddceb1ee1de3578d5. 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/DEF057230403.
Mascagni: Cavalleria rusticana - Leoncavallo: Pagliacci (Bayerische Staatsoper Live)
Das Land des Lächelns / Act 2: "Dein ist mein ganzes Herz" (Orch. Klickmann) - Live
Orchestra del Maggio Musicale Fiorentino
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L'Africaine / Act 4: "Mi batte il cor... O Paradiso" - Live
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Leoncavallo: Pagliacci / Mascagni: Cavalleria Rusticana
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Verdi: La traviata (Bayerische Staatsoper Live)
R. Strauss: Elektra, Op. 58, TrV 223 (Highlights)
The Planets, Op. 32: I. Mars, the Bringer of War
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The Planets, Op. 32: II. Venus, the Bringer of Peace
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The Planets, Op. 32: IV. Jupiter, the Bringer of Jollity
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Die lustige Witwe, Act II: No. 10b, Valse moderato
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Die lustige Witwe, Act II: Dialogue. Ah, die Baronin und Herr Rosillon
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Die lustige Witwe, Act II: No. 12, Finale. e. Es waren zwei Königskinder
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7 frühe Lieder (1928 Orch. Version): No. 1, Nacht
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Chamber Concerto for Piano, Violin & 13 Wind Instruments: II. Adagio
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Lyric Suite For String Quartet (1926): II. Andante amoroso
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3 Pieces for Orchestra, Op. 6: No. 3, Marsch
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Chamber Concerto for Piano, Violin & 13 Wind Instruments: III. Rondo ritmico con introduzione
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Lyric Suite, 3 Pieces for String Orchestra: I. Andante amoroso
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Lyric Suite, 3 Pieces for String Orchestra: III. Adagio appassionato
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Violin Concerto "To the Memory of an Angel": I. Andante - Allegro
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Four Pieces For Clarinet And Piano, Op. 5: 3. Sehr rasch
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Violin Concerto "To the Memory of an Angel": II. Allegro - Adagio
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Four Pieces For Clarinet And Piano, Op. 5: 4. Langsam
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Chamber Concerto for Piano and Violin with 13 Wind Instruments: 2. Adagio
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Sieben frühe Lieder: III. Die Nachtigall
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f2bb155896c04f7cb07ead6e66e456b7445eb26ea7ed24dd815e13b9f5390b. 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/DEF059104924.
Lulu, Prologue: Hereinspaziert in die Menagerie
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Lulu, Act III (Compl. Cerha): Meine Herrn und Damen! – Der Staatsanwalt bezahlt demjenigen
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Lulu, Act II: Gott sei dank, dass wir endlich – Hast oben abgeschlossen?
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Lulu, Act II: Die Matinée wird, wie ich mir denke
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Lulu, Act I: Den hab' ich mir auch ganz anders vorgestellt
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Lulu, Act I: Was tut denn Ihr Vater da? Sonata. Wenn ich ihr Mann wäre
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Lulu, Act I: Ich darf mich jetzt hier nicht sehen lassen
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Lulu, Act I: Seit ich für die Bühne arbeite Noch etwas, bitte
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Lulu, Act I: Über die liesse sich freilich – Das hättest du dir besser erspart
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5b61ac473e0691c3e3f61b6cea7863c7dc05b04d414dde4a8afd2c0a0a402c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEF057230401.
Die lustige Witwe, Act III: Entracte. Vilja-Lied
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Die lustige Witwe, Act III: No. 14, Chanson "Grisetten-Lied". Ja, wir sind es die Grisetten
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Die lustige Witwe, Act I: Accompanied Dialogue. Ah, gnädige Frau, ich bin glücklich
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Die lustige Witwe, Act III: No. 14a, Reminiszenz: Tra la la la la...
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Die lustige Witwe, Act III: Dialogue. Gospodina!
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Die lustige Witwe, Act I: No. 6, Finale: a. Damenwahl!
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Die lustige Witwe, Act III: No. 16, Schlussgesang. Ja, das Studium der Weiber ist schwer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5588f29a00b77c00aaf883476b684f566ac30715d51ce16bb38017c859cfb4. 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/DEF057230413.
Die lustige Witwe, Act II: No. 7b, Nun lasst uns aber wie daheim – Vilja-Lied. Es lebt ein Vilja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c454390cdd23cd2d8bb2ecb837193a7ff37cc8e627a8f61d75169af1066f2a6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEF057230406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e1cdc31e287b828db8390342523d550fd44f1d0a6d2239886fe82dc62e25ac. 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/DEF056903690.
Die lustige Witwe, Act II: Dialogue. Gospodina, dieses vaterländische Fest
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f7b32c5d3c53734e3b9908b5b71d62da088b90fa1d1586b4f76b6631475cd7. 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/DEF056903720.
Die lustige Witwe, Act II: No. 8, Duet. Heia, Mädel, aufgeschaut – Dummer, dummer Reitersmann
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b5f415d35aaa79c18f66d925b6887c680e616462e83bfec3996256783c8c59. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEF057230414.
Die lustige Witwe, Act II: No. 11a, Duet. Mein Freund, Vernunft!
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5b786fffa4ec44ac2d75dabc09fda02618b37aefcdb190340155f894c36acb. 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/DEF057230429.
Die lustige Witwe, Act II: No. 12, Finale: a. Ha! Ha! Wir fragen
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Die lustige Witwe, Act II: No. 12, Finale: d. Die Ehe ist für mich privat
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Meine Lippen sie küssen so heiss - Operetta's Greatest Hits
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd874f8e9a1b54fd07a973276e6b90ac64c0e38efc38a1fc5a0e391ab81a71b6d. 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/NLA508602007.
Zeller: Der Vogelhändler (QS) - Fall: Die Dollarprinzessin (QS)
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Images for Orchestra, CD 118: II. Ibéria: c. Le matin d’un jour de fête
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3575c1d293a27707285fefe8e754b3d71a77d873ba45a24b7d0ed87fd402216a. 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/DEF059632601.
Mozart: Le Nozze di Figaro: Non piu andrai, farfallone amoroso - Act One
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Dvorak: Rusalka: Festive music. Ballet... Beda! Beda! Uboha Rusalko bleda - Watersprite, Rusalka - Act Two
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Friedrich Cerha: Über den dritten Akt von Alban Bergs „Lulu“
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01aa87f8bab6f7ed53db7f19b44e14d7b72e5c7bd2666fc64a2a2e00a4d756a3. 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/USNO18101907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6c7b49822fc5712dcb5f78cfed4cfdf6c8b0d4986447051dffc35b9075213a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18101908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cbfd3096d074d225d1b88063ee3d66a1176b1d33d328dd0f409b09d4f7330c. 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/USNO18101909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4df2e29cab874094e1ba741f61d77a7814de5bf5cdb933652a0177d59f21f6. 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/USNO18101910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7aa0474cc15499b77c38a83d4365af8f345e73fa0092f04cd4fac1189b9b4c. 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/USNO18101913.
Pagliacci / Prologue: "Si può? Signore! Signori!"
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Pagliacci / Act 1: "Un tal gioco, credetemi"
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf441568ffc22a673a90bd288070a3e7dd4e19af82f5efb68b4dfa12629a3fe0c. 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/NLA508321406.
Pagliacci / Act 1: "Don, din, don - suona vespero"
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238f3c883029df19bd81e762bfa08cfc0275c2b8077066cf1ff63ca873918616. 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/NLA508321409.
Pagliacci / Act 1: "Nedda! Silvio, a quest'ora"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fd88a17e8fe8e5705123e541cb70a052dcbcf98e97fcc838e66b4b38446f3d. 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/NLA508321411.
Pagliacci / Act 1: "Cammina adagio" - "Derisione e scherno!" - "Padron! che fate!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c49b3677b32b9aee34bbb32859145a85a146cfc504063aed3f8a4af99b0f018. 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/NLA508321414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaec0052dd73d39db4aab99173a24892fdb0e6c623e7e29e26172ce3449958cf. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLA508321415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2be9e12e448339f097109614ec1ab1ffb2c208d65ca716f243f673c477211b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLA508321416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6864db22cf406e93bd5709f87f37530218bfcd76c058f6c89da77f114e4364. 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/NLA508321417.
Pagliacci / Act 2: "Presto, affrettiamoci"
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Pagliacci / Act 2: "Pagliaccio, mio marito"
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Pagliacci / Act 2: "Arlecchin! Colombina!" - "Prendi questo narcotico"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99be0af72953df5e9194940760a4f7ebd8a2febda6aa431ff17d07724d22bb7a. 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/NLA508321422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa801e90b693f8a94cce8b785e808160155a87e48d234ce846dafdfa93a7c52e. 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/NLA508321423.
Pagliacci / Act 2: "No, Pagliaccio non son"
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Mack The Knife from The Threepenny Opera
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16c1a756e783fb445c701e57bc9833a0f1b3d7499e41f3bdefec85fb4f4c1d5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USSM15500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede70f9894eeb6b2f972a673d256f8586f5277317abb237980ae0bb671a66f1c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USSM19400629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2d1d73b7c46724f70b1b4e1bac16c4db80349792fffb5e5f30fd39e71410ee. 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/USSM18500128.
September Song from Knickerbocker Holiday
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What Keeps Mankind Alive? from The Threepenny Opera
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Die Fledermaus / Act 2: "Mein Herr Marquis"
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Verdi: Il Trovatore (Metropolitan Opera)
Mozart: Le nozze di Figaro, K. 492 [Recorded 1960]
Richard Strauss: Elektra, Op. 58, TrV 223 (Highlights)
Mascagni: Cavalleria rusticana - Leoncavallo: Pagliacci