thumb|130px|Erika Köth thumb|130px|Grave of Erika Köth in the Alter Friedhof (old cemetery) in Darmstadt Erika Köth (15 September 1925 – 20 February 1989) was a German operatic coloratura soprano, par
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 0x6e8771eb6303aefa6a515920c7fb6c8e044ad2e1e9fade69f56a745c9020b9b3. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bbfc3614-667d-4270-a509-5d92e9535841.json and https://artists.proofprofile.net/proofs/artist/bbfc3614-667d-4270-a509-5d92e9535841.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Così fan tutte, K. 588 (Sung in German) [Recorded 1957]
Mozart: Die Entführung aus dem Serail, K. 384
Mozart: Entführung aus dem Serail - Highlights
Singers of the Century: Primadonna Coloratura
Lehár: Das Land des Lächelns, Friederike, Der Zarewitsch
Rossini: Der Barbier von Sevilla (Electrola Querschnitte)
Erika Köth "geliebt und unvergessen", Vol. 4
Erika Köth "geliebt und unvergessen", Vol. 3
Erika Köth "Geliebt und Unvergessen", Vol.1
Erika Köth "Geliebt und Unvergessen", Vol. 2
Frau Luna, Lysistrata & Im Reiche des Indra
Fritz Wunderlich - Und es blitzten die Sterne
Strauss II, J.: Die Fledermaus (Gala Performance)
Mozart: Airs de concert (Les indispensables de Diapason)
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 0x0fd02e93a93d06621542bf7d832ac208b07382698500386a723f07ee2b8b4006. 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/FR9W15200047.
Karajan A-Z: Johann Strauss - Josef Strauss
Der Zigeunerbaron: Overture - Recorded 1942
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a775533a99a0d1b67eb994a50cd0c268819e42efa58fb98e2249a2c16e0a1f. 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/DEF054202020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af4fd9be5eb639e9b376ee0ae2a9e2b58771e1d16cd607cc5d97fe316bf49fd. 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/GBF076010170.
Der Zigeunerbaron: Overture - Recorded 1959
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4267fd2c8a848bfd1a9106f2451415555a96c89c4b2bef8215b07a6260bab6fa. 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/GBF076010180.
Auf der Jagd, Polka, Op. 373 - Recorded 1959
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932c0fcaf9c18f85799975fb8d1d6c5ef8799ae6212eb4a9f2f186eee64d56cf. 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/GBF076010190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0f4051dd87d901c5a313e18519d4b0287d27982d3ffd8fbdf4a8a9c715e0fd. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/DEF056604130.
An der schönen blauen Donau, Waltz, Op. 314 - Recorded 1980
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4de45670fc2cf86ed266f4805396a8b142deb3161467888e802efc17ba5ea02. 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/DEF058001370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8442f3da3e8ac31a61765b9a917e63c7ad86a6092000722c68fb52b3c83d6d3. 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/DEF058001430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e067a26c98d3f3655bcbd8e1e698067ac8820f39a00c38ac1f287dfea88b85. 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/GBAYC8601755.
Mozart: Piano Concerto No. 21 in C Major, K. 467: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb834aaeb998c0be426ef97a96ef22900c36d7b531904caaf2aea44852b2bb06c. 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/GBAYC8900200.
Verdi: Nabucco, Act 3: "Va, pensiero, sull'ali dorate" (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8c5977aaf1ba60a843634d796b8bb31cd7c76916cd7a0a129a572b3a658695. 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/GBAYC8600472.
Beethoven: Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256fe43e45cbe64ca733f5c23a573a77e2d90e9668f8607d06686f3b63acb9e0. 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/GBAYC8804146.
Lachrimae, or Seaven Teares: Semper Dowland Semper Dolens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295144e9b21edad29f1753c4942328a3a9d7ffd79b7a72c819ba1204ef301304. 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/GBAYC8805990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32162b2d4e52e6e239f5a11c618266d9472a120e69c645da17576475c14618c. 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/GBAYD8300335.
Rossini: Guillaume Tell: Overture. Andante - Allegro (Excerpt, Conclusion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf518ab6c5eb4224ef3c616dd442a66c3c6ab27874ed660d3ba94529d8da04b94. 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/GBAYC9006246.
Pachelbel: Canon and Gigue for Three Violins and Continuo in D Major: Canon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2637101785f099616c124683e374b7775b49fc04d99128f5e74b990acef24b6d. 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/GBAYC8702056.
Schubert: Schwanengesang, D. 957: No. 4, Ständchen (Arr. for Cello and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99955a49434d3ef094a9ecb10614ceb5496cec844389966c99aca1e3a7acb03d. 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/GBAYC0800669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398339c28a2d9052b93e13797ae2ec5a6cb5907c5db8c9c990c981e2235281f2. 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/GBAYC8703951.
Vivaldi: The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0529ddc62dcb8f6aa65f91c588446703c29fe49faecf596ab200c7a2a6570923. 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/GBAYC0003248.
Les Indes galantes : Les Sauvages - Danse du Calumet de la Paix et duo Forêts paisibles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d893b0ea571863417956793c4c3c63f5ff4928d80b7050b5948fc26ebe7bf2d. 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/GBAYC1105237.
Handel / Orch. Hale: Keyboard Suite No. 4 in D Minor, HWV 437: III. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439d04fb7e3eedc6ccb88ce840243d20ef5d81905cbcfc48dc1ac9e48bba6944. 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/GBAYC0201575.
Merrie England, Act II: Dan Cupid hath a garden (The English Rose) [McAlpine] - 1989 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950c0d761cd9836f65d4994554aa5c306ef946cb63f38a9fdf763a37c45b0d71. 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/GBAYD8900838.
Léhar: Paganini: "Gern hab' ich die Frau'n geküsst"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475de15b8a9df05f467939b1d2e9d6b6d195c8b021fc1c5c3b9d1d19e6015848. 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/DEA340200672.
Zeller: Der Obersteiger, Act 2: "Sei nicht bös" (Martin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e82799aa7752ef8e79e89c143c488da483576658a024eb80075a7dae12aa243. 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/GBAYC8602649.
I'll See You Again (Bitter Sweet) - 1999 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d13676cf9fb89f7866f429a62b71927395dcf73361133adbf5b587096a9f971. 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/GBAYE9901619.
Lehár: Die lustige Witwe, Act 2: Vilja-Lied. "Es lebt eine Vilja, ein Waldmägdelein" (Hanna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37193341d289ffdadcfdef39bd0c73b4b95fd5416182809336270740acd72cb3. 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/GBAYC8602653.
Die Fledermaus, Act 2: Klänge der Heimat (Csárdás / Rosalinde) - 1997 Remaster
Chor der Wiener Staatsoper in der Volksoper
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b7c6cea35132ebb27721df418cf7f56a1c208c487b3655dc288332d93db895. 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/DEA349707430.
Lehár - Die lustige Witwe, Act 1: No. 4, Lied, "O Vaterland - Da geh ich zu Maxim" (Danilo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05b419c9d1292427cba79f781dc20177edbf0d695d4aec275cfcb48f4e2f5f5. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEA348702134.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Der Graf von Luxemburg · Operette in 3 Akten - Querschnitt, Erster Akt: - Frau Gräfin, Sie Erlauben Wohl - Sie Geht Links, Er Geht Rechts - Bist Du's Lachendes Glück (René, Angèle) - 2002 Rem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3ba8aaae9d0904d8e06826b1459290b974e44b971ed8109074e2ec0375ad15. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEA340200653.
Das Land des Lächelns: Dein ist mein ganzes Herz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6274971c71abe59f6ef877dc3f4d77adf232ab8d3a28059820a19597a2c74832. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEE476500095.
Die ungarische Hochzeit: Spiel mir das Lied von Glück und Treu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28afa07b1654787a6ff21c2d03544e13bf3bdd7a361a37eaa69e1bc95870b02c. 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/DEE476400068.
Frau Luna: Schlösser, die im Monde liegen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727936cabe49a74f1af0efb8a22e83f90a956fcacf20c2bd30052b3560b93363. 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/DEE470100637.
Giuditta: Meine Lippen, sie küssen so heiß
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116204bf71fa8afcc4d552995761e4f336e6880c209112f2747c601499bbd374. 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/DEE470000275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d0893e6fed3db5c29f588835c0cfc6601de4c3b78e11a1deb23a334d8a162e. 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/DEE476700159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb72488f448ff342f513fa7878608ae7df203e5d5040e7daaddc7a5f42e19f1. 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/DEE476700078.
Gräfin Mariza: Komm Zigany (auch ich war einst ein feiner Csárdáskavalier)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3508b12e9e261a8ed821879ce49b298ac691931bfde8e98a86a312befeaeeec. 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/DEE470000273.
Der Zigeunerbaron, IJS 486: Wer uns getraut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd78c38a564540d2add1add00e358404dfcab247c9549215af6d278ece80b6c. 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/DEE476400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a924f6a19cbd30b4b7472092c6126f3295f2303300807ac22ebd3b86428af3. 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/DEE470000274.
Ein Walzertraum: Leise, ganz leise klingt's durch den Raum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61be8e3f2320167a9e2e8ced1f574fb426e10c0b39db402d8e7eb33610ef8065. 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/DEE477700051.
Der Vogelhändler: Ich bin die Christel von der Post
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf67130c7f8019efc9f30fd8403c276c852d8bac9147569c6353997b3e5e7cdb. 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/DEE477500029.
Der Vogelhändler: Schenkt man sich Rosen in Tirol
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Im weißen Rössl: Es muss was Wunderbares sein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685f86cb821a04c773696bba10ae9bb1d65c341af660b02cb020523e5c03ecea. 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/DEE477100386.
Paganini: Gern hab' ich die Frau'n geküßt
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Im weißen Rössl: Im weißen Rössl am Wolfgangsee
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Der Zarewitsch: Es steht ein Soldat am Wolgastrand (Wolgalied)
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Der Vetter aus Dingsda: Strahlender Mond, der am Himmelszelt thront
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Victoria und ihr Husar: Ja, so ein Mädel, ungarisches Mädel
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Der Zigeunerbaron, IJS 486: Ja, das Schreiben und das Lesen
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Eine Nacht in Venedig: Komm in die Gondel
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Frühjahrsparade: Singend, klingend ruft dich das Glück
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Die Fledermaus, IJS 481: Brüderlein und Schwesterlein
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6795df69515e361c9d3ba975cc934f390568c407c4a7ee4576d291b8a3eddf5. 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/DEE476400060.
Fall: Die Rose von Stambul/Millöcker: Die Dubarry
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35abdcb45b033722ad276869e17aa93cd54aec17d3c363bc31c91969dc0b128. 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/DEA349603967.
Mozart: Le nozze di Figaro, K. 492, Act 2: "Voi, che sapete che cosa è amor" (Cherubino)
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Mozart: Clarinet Concerto in A Major, K. 622: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb687e82b600ad492b1dfaa6c73aa26b8847945cf9cc6f4484d61001c425fb27a. 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/GBAYC9803207.
Mozart: Requiem in D Minor, K. 626: I. Introitus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e32df387c881cd226a289ddb0f31df4994e9ca607e5ed43ae35b6385856ac3. 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/GBAYC8702384.
Mozart: Requiem in D Minor, K. 626: II. Kyrie
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Mozart: Requiem in D Minor, K. 626: V. Rex tremendae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6e001ef21d8d72c57e4ec8586556281fc9a1a72bf209fa222af355768175ed. 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/GBAYC8702388.
Mozart: Requiem in D Minor, K. 626: VII. Confutatis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752626444b7b638a5814655e00c470c3afab2999da5aab6884f40476bd26a2d7. 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/GBAYC8702390.
Mozart: Requiem in D Minor, K. 626: VIII. Lacrimosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033a8f9114282b78e1cab6defc3d6a470f5a60d6cdd1eb84c81e5dd2a04a8597. 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/GBAYC8702391.
Die Fledermaus: Overture - Recorded 1960
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Die Fledermaus, Act I: No. 1, Introduction. Täubchen, das entflattert ist
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Die Fledermaus, Act I: No. 3, Duet. Komm mit mir zum Souper
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0b22b4456bb7503d7353e9d2b86a2111fc7c15ffff16c5ae75a23155af7d0e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:00:26Z), 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/GBBBA6075010.
Die Fledermaus, Act I: No. 5, Finale. a. Trinke, Liebchen, trinke schnell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503035b6a2cc45b464f9b9f8bfad67018b9b6537e83b185d32fa1a5f3da521d6. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBF076040507.
Die Fledermaus, Act I: No. 5b, Ich höre Stimmen! - No. 5c, Mein Herr, was dächten Sie von mir
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Die Fledermaus, Act I: No. 5, Finale. d. Nein, nein, ich zweifle gar nicht mehr
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Die Fledermaus, Act II: No. 7, Couplet. Ich lade gern mir Gäste ein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06463be327a7e052a43f1a56c477614ded45a60e0d4084ef183ee7c712a37765. 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/GBBBA6075040.
Die Fledermaus, Act II: No. 8a, Ach, meine Herr'n und Damen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809937ec204336626b9a18d40e8ba9a6a78abc9d385f9300cc7aba6d27254e3c. 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/GBF076040513.
Die Fledermaus, Act II: No. 11, Finale. b. Herr, Chevalier, ich grüsse Sie!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2916f6b379c055aa89472adcca90959be99f41905416a73a055856c0ec51afc. 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/GBBBA6075080.
Die Fledermaus, Act II: No. 11, Finale. c. Genug damit, genug
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5db185b4c12d403f3a9f676247f672fa50ceac68fc061984dd0ddd989cc0d3a. 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/GBF076040529.
Die Fledermaus, Act III: No. 16, Finale. O Fledermaus, o Fledermaus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09543d5c103ffa5d6f16aefe9de129c1bcd083d92d883a14858f1768d7f2d86a. 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/GBF076040534.
Die Fledermaus, Act I: No. 4, Trio. So muss allein ich bleiben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dfc8b6468d6e3b6959b4e60c886790ab29a89d82f60fa3fcc6b0e430ef70ff. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBBBA6075020.
Die Fledermaus, Act II: No. 6, Introduction. Ein Souper heut uns winkt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3657f6fd9c26509a4f4f44282815c3ee9bdc1d1c709cfbe8e17f4d625f664e87. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBBBA6075030.
Die Fledermaus, Act II: No. 8b, Mein Herr Marquis "Adele's Laughing Song"
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Die Fledermaus, Act II: No. 9, Duet. Dieser Anstand, so manierlich
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Die Fledermaus, Act II: No. 11, Finale. a. Im Feuerstrom der Reben
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Die Fledermaus, Act III: No. 14, Couplet. Spiel' ich die Unschuld vom Lande
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