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description: Ferry Gruber (28 September 1926 – 23 July 2004) was an Austrian-German tenor in opera and operetta. A member of both the Bavarian State Opera and Staatstheater am Gärtnerplatz in Munich for half a cen
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album: Flotow: Fatme
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album: Offenbach: Der Ehemann vor der Tür
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  track: Die Fledermaus, Act II: No. 6, Introduction. Ein Souper heut uns winkt
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  track: Die Fledermaus: Overture
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  track: Die Fledermaus, Act I: No. 1a, Introduction. Täubchen, das entflattert ist
  track: Die Fledermaus, Act II: Dialogue. Adele, wer hat denn dich hierher eingeladen?
  track: Die Fledermaus, Act I: Dialogue. Täubchen, das entflattert ist
  track: Die Fledermaus, Act II: No. 7, Couplet. Ich lade gern mir Gäste ein
  track: Die Fledermaus, Act I: No. 1b, Duettino. Ach, ich darf nicht hin zu dir!
  track: Die Fledermaus, Act II: Dialogue. Durchlaucht, hier ist Ihre Brieftasche wieder
  track: Die Fledermaus, Act I: Dialogue. Die arme Tante
  track: Die Fledermaus, Act II: No. 8a, Ach, meine Herr'n und Damen
  track: Die Fledermaus, Act I: No. 2, Trio. Nein, mit solchen Advokaten
  track: Die Fledermaus, Act II: No. 8b, Mein Herr Marquis "Adele's Laughing Song"
  track: Die Fledermaus, Act I: Dialogue. Sag mal, also statt fünf musst du acht Tage
  track: Die Fledermaus, Act II: Dialogue. Hoheit, ein Chevalier Chagrin ist da
  track: Die Fledermaus, Act I: No. 3, Duet. Komm mit mir zum Souper
  track: Die Fledermaus, Act II: No. 9, Duet. Dieser Anstand, so manierlich
  track: Die Fledermaus, Act I: Dialogue. Seid ihr verrückt geworden?
  track: Die Fledermaus, Act II: Dialogue. Ah, da ist ja die schöne Unbekannte
  track: Die Fledermaus, Act I: No. 4, Trio. So muss allein ich bleiben
  track: Die Fledermaus, Act II: No. 10, Csárdás. Klänge der Heimat
  track: Die Fledermaus, Act I: Dialogue. Ach...diese Männer
  track: Die Fledermaus, Act II: Dialogue. Bravo! Bravissimo!
  track: Die Fledermaus, Act I: No. 5, Finale. Trinke, Liebchen, trinke schnell
  track: Die Fledermaus, Act II: No. 11, Finale. Im Feuerstrom der Reben
  track: Die Fledermaus, Act II: No. 11a, Finale. Herr, Chevalier, ich grüsse Sie!
  track: Die Fledermaus / Act II: Unter Donner und Blitz, Polka, Op. 324
  track: Die Fledermaus / Act II: No. 11, Finale. c. Genug damit, genug
  track: Die Fledermaus, Act III: No. 12, Entr'acte
  track: Die Fledermaus, Act III: Dialogue. Täubchen, das entflattert ist
  track: Die Fledermaus, Act III: No. 13, Melodram. So, da wär'n wir ja zu Hause
  track: Die Fledermaus, Act III: Dialogue. Ah, der Herr Direktor ist entschlafen
  track: Die Fledermaus, Act III: No. 14, Couplet. Spiel' ich die Unschuld vom Lande
  track: Die Fledermaus, Act III: Dialogue. Herr Direktor!
  track: Die Fledermaus, Act III: No. 15, Trio. Ich stehe voll Zagen
  track: Die Fledermaus, Act III: Dialogue. Also, du willst mir Vorwürfe machen?
  track: Die Fledermaus, Act III: No. 16, Finale. O Fledermaus, o Fledermaus
album: Offenbach: Die Insel Tulipatan
album: Stolz: Himmelblaue Träume (Highlights)
album: Carlos Kleiber - Complete Recordings on Deutsche Grammophon
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album: Johann Strauss Jr.: Wiener Blut (QS)
album: Das Grosse Operetten Festival
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album: Johann Strauß II: Der Zigeunerbaron (excerpts) - "Operetta Highlights"
album: René Kollo - From Mary Lou To Meistersinger
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album: Can-Can - Best Of Offenbach
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album: Paul Abraham: Viktoria und ihr Husar/Blume von Hawaii
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album: #nowspinning Offenbach
album: The Gypsy Baron
album: Kurt Eichhorn conducts Carl Orff
album: Die Zirkusprinzessin
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album: Kálmán: Die Zirkusprinzessin (Highlights)
album: Stolz: Venus in Seide (Highlights)
album: Offenbach: Orpheus In Der Unterwelt
album: Lehar: Das Land des Lächelns (Excerpts)
album: Kálmán: Gräfin Mariza (Excerpts)
album: Sound Picture Postcard of Varaždin
album: Orff: Die Kluge; Der Mond
album: Lehar: Die Lustige Witwe - The Sony Opera House
album: Kálmán: Die Zirkusprinzessin (excerpts) - "Operetta Highlights"
album: Stolz: Frühling im Prater
album: Stolz: Venus in Seide
album: Kálmán: Die Csárdasfürstin (Excerpts)

Die Fledermaus, Act I: No. 2, Trio. Nein, mit solchen Advokaten
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audio: Die Fledermaus, Act I: No. 2, Trio. Nein, mit solchen Advokaten
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Die Fledermaus, Act III: Dialogue. Herr Direktor!
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audio: Die Fledermaus, Act III: Dialogue. Herr Direktor!
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Wiener Blut (operetta) / Act 2: Mir scheint, du willst spaßen
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audio: Wiener Blut (operetta) / Act 2: Mir scheint, du willst spaßen
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Offenbach: Die schöne Helena (Gesamt) 1. Akt (1994 Digital Remaster): Nr. 8: Ehre! Lob sei dem Sieger dargebracht
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by artist: Bavarian Radio Chorus
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by artist: Martin Finke
by artist: Nicolai Gedda
by artist: Ferry Gruber
by artist: Friedrich Lenz
by artist: Benno Kusche (Bariton)
by artist: Norbert Orth
by artist: Willy Mattes
by artist: Munich Radio Orchestra
by artist: Anneliese Rothenberger
by artist: Klaus Hirte
by artist: Muenchner Rundfunkorchester
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genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T12:45:34Z
audio: Offenbach: Die schöne Helena (Gesamt) 1. Akt (1994 Digital Remaster): Nr. 8: Ehre! Lob sei dem Sieger dargebracht
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Die Fledermaus, Act I: No. 1a, Introduction. Täubchen, das entflattert ist
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by artist: Johann Strauss II
by artist: Lucia Popp
by artist: René Kollo
by artist: Bavarian State Orchestra
by artist: Carlos Kleiber
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T15:41:10Z
audio: Die Fledermaus, Act I: No. 1a, Introduction. Täubchen, das entflattert ist
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Die Fledermaus, Act II: Dialogue. Adele, wer hat denn dich hierher eingeladen?
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duration ms: 113466
explicit: false
by artist: Johann Strauss II
by artist: Evi List
by artist: Lucia Popp
by artist: Bernd Weikl
by artist: Ivan Rebroff
by artist: Nicolai Lugowoi
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Die Fledermaus, Act II: Dialogue. Adele, wer hat denn dich hierher eingeladen?
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Die Fledermaus, Act I: Dialogue. Täubchen, das entflattert ist
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duration: PT1M46S
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by artist: René Kollo
by artist: Lucia Popp
by artist: Julia Varady
in album: Strauss: Die Fledermaus
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Die Fledermaus, Act I: Dialogue. Täubchen, das entflattert ist
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Die Fledermaus, Act II: No. 7, Couplet. Ich lade gern mir Gäste ein
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by artist: Bavarian State Orchestra
by artist: Carlos Kleiber
in album: Strauss: Die Fledermaus
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isrc code: DEF057530607
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Die Fledermaus, Act II: No. 7, Couplet. Ich lade gern mir Gäste ein
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Die Fledermaus, Act I: No. 1b, Duettino. Ach, ich darf nicht hin zu dir!
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by artist: Lucia Popp
by artist: Julia Varady
by artist: Bavarian State Orchestra
by artist: Carlos Kleiber
in album: Strauss: Die Fledermaus
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additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa004a99821f944cd0081305770ba03c1f480fbe1f5ec03782e3557304e3c22. 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/DEF057530620.
  date published: 2026-06-13T13:32:09Z
audio: Die Fledermaus, Act I: No. 1b, Duettino. Ach, ich darf nicht hin zu dir!
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.239
  additional property: Energy
    type: PropertyValue
    value: 0.116
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.965
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.068
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.067
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.021
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Fledermaus, Act II: Dialogue. Durchlaucht, hier ist Ihre Brieftasche wieder
type: MusicRecording
duration: PT0M45S
duration ms: 45893
explicit: false
by artist: Johann Strauss II
by artist: Lucia Popp
by artist: Ivan Rebroff
by artist: Hermann Prey
by artist: Bernd Weikl
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530627
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T21:07:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf3d0c0b65ca21c098c156f43db4dcad46a706b99f871f21e021f1ef2f7b42974
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530627
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d0c0b65ca21c098c156f43db4dcad46a706b99f871f21e021f1ef2f7b42974. 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/DEF057530627.
  date published: 2026-07-02T03:30:09Z
audio: Die Fledermaus, Act II: Dialogue. Durchlaucht, hier ist Ihre Brieftasche wieder
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.162
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.489
  additional property: Energy
    type: PropertyValue
    value: 0.266
  additional property: Speechiness
    type: PropertyValue
    value: 0.885
  additional property: Acousticness
    type: PropertyValue
    value: 0.913
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.782
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.36
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.763
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Die Fledermaus, Act I: Dialogue. Die arme Tante
type: MusicRecording
duration: PT1M8S
duration ms: 68266
explicit: false
by artist: Johann Strauss II
by artist: Julia Varady
by artist: René Kollo
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530621
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-19T09:02:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1772d5f49da58f69f748aa774c88fdc26d6b9abf958b92570ee720e36486b274
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530621
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1772d5f49da58f69f748aa774c88fdc26d6b9abf958b92570ee720e36486b274. 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/DEF057530621.
  date published: 2026-07-02T03:30:09Z
audio: Die Fledermaus, Act I: Dialogue. Die arme Tante
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.748
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.577
  additional property: Energy
    type: PropertyValue
    value: 0.105
  additional property: Speechiness
    type: PropertyValue
    value: 0.881
  additional property: Acousticness
    type: PropertyValue
    value: 0.846
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.409
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.364
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.643
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Fledermaus, Act II: No. 8a, Ach, meine Herr'n und Damen
type: MusicRecording
duration: PT1M3S
duration ms: 63240
explicit: false
by artist: Johann Strauss II
by artist: Lucia Popp
by artist: Bernd Weikl
by artist: Hermann Prey
by artist: Ivan Rebroff
by artist: Chor der Bayerischen Staatsoper München
by artist: Bavarian State Orchestra
by artist: Carlos Kleiber
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530628
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-19T09:02:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x547f21718901eb5d49d29c0446844120a8db3fee4d25b72a339a57573ca43d5f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530628
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547f21718901eb5d49d29c0446844120a8db3fee4d25b72a339a57573ca43d5f. 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/DEF057530628.
  date published: 2026-07-02T03:30:09Z
audio: Die Fledermaus, Act II: No. 8a, Ach, meine Herr'n und Damen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 143.788
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.522
  additional property: Energy
    type: PropertyValue
    value: 0.339
  additional property: Speechiness
    type: PropertyValue
    value: 0.238
  additional property: Acousticness
    type: PropertyValue
    value: 0.972
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.452
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.718
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.116
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Fledermaus, Act II: No. 8b, Mein Herr Marquis "Adele's Laughing Song"
type: MusicRecording
duration: PT3M24S
duration ms: 204160
explicit: false
by artist: Johann Strauss II
by artist: Lucia Popp
by artist: Chor der Bayerischen Staatsoper München
by artist: Bavarian State Orchestra
by artist: Carlos Kleiber
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530629
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T19:09:15+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x391977503ac24aa9e9bc2dec98b1374223e3110804cf372d3124eab75e03da0e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953528
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530629
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391977503ac24aa9e9bc2dec98b1374223e3110804cf372d3124eab75e03da0e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEF057530629.
  date published: 2026-06-13T15:41:10Z
audio: Die Fledermaus, Act II: No. 8b, Mein Herr Marquis "Adele's Laughing Song"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 139.865
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.457
  additional property: Energy
    type: PropertyValue
    value: 0.197
  additional property: Speechiness
    type: PropertyValue
    value: 0.084
  additional property: Acousticness
    type: PropertyValue
    value: 0.932
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.667
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.29
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.774
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Fledermaus, Act I: Dialogue. Sag mal, also statt fünf musst du acht Tage
type: MusicRecording
duration: PT1M50S
duration ms: 110666
explicit: false
by artist: Johann Strauss II
by artist: Julia Varady
by artist: Hermann Prey
by artist: Lucia Popp
by artist: Bernd Weikl
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530623
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-19T23:57:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa8f3736e13d7272b0656a9a620e3a2813870dfc9f7d99648d333e8a40c1cabf1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530623
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f3736e13d7272b0656a9a620e3a2813870dfc9f7d99648d333e8a40c1cabf1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF057530623.
  date published: 2026-07-02T03:55:08Z
audio: Die Fledermaus, Act I: Dialogue. Sag mal, also statt fünf musst du acht Tage
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 144.505
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.563
  additional property: Energy
    type: PropertyValue
    value: 0.124
  additional property: Speechiness
    type: PropertyValue
    value: 0.569
  additional property: Acousticness
    type: PropertyValue
    value: 0.765
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.738
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.294
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.92
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Fledermaus, Act II: Dialogue. Hoheit, ein Chevalier Chagrin ist da
type: MusicRecording
duration: PT3M4S
duration ms: 184400
explicit: false
by artist: Johann Strauss II
by artist: Nicolai Lugowoi
by artist: Ivan Rebroff
by artist: Bernd Weikl
by artist: Hermann Prey
by artist: Benno Kusche
by artist: Evi List
by artist: Julia Varady
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530630
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T21:06:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7a50f9fa7ac5215abbd307a6a45c3650d3470b277a8cbabfef00035643307be4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530630
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a50f9fa7ac5215abbd307a6a45c3650d3470b277a8cbabfef00035643307be4. 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/DEF057530630.
  date published: 2026-07-02T03:30:09Z
audio: Die Fledermaus, Act II: Dialogue. Hoheit, ein Chevalier Chagrin ist da
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.075
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.398
  additional property: Energy
    type: PropertyValue
    value: 0.214
  additional property: Speechiness
    type: PropertyValue
    value: 0.894
  additional property: Acousticness
    type: PropertyValue
    value: 0.817
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.651
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.278
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.834
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Fledermaus, Act I: No. 3, Duet. Komm mit mir zum Souper
type: MusicRecording
duration: PT3M13S
duration ms: 193800
explicit: false
by artist: Johann Strauss II
by artist: Bernd Weikl
by artist: Hermann Prey
by artist: Bavarian State Orchestra
by artist: Carlos Kleiber
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530603
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-11T04:10:25+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1ed649a44cde386dad343c65a6000eb777badf94bea08ae0b326954f924db722
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530603
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed649a44cde386dad343c65a6000eb777badf94bea08ae0b326954f924db722. 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/DEF057530603.
  date published: 2026-06-13T13:32:09Z
audio: Die Fledermaus, Act I: No. 3, Duet. Komm mit mir zum Souper
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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Die Fledermaus, Act II: No. 9, Duet. Dieser Anstand, so manierlich
type: MusicRecording
duration: PT4M44S
duration ms: 284106
explicit: false
by artist: Johann Strauss II
by artist: Julia Varady
by artist: Hermann Prey
by artist: Bavarian State Orchestra
by artist: Carlos Kleiber
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530609
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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  value: 2026-06-19T09:02:32+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530609
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee8e9264ba636017ab7eb66b707669cdeaf3d393f2a2ef2f003395c31e3e3ff. 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/DEF057530609.
  date published: 2026-07-02T03:30:09Z
audio: Die Fledermaus, Act II: No. 9, Duet. Dieser Anstand, so manierlich
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  additional property: Danceability
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  additional property: Energy
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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Die Fledermaus, Act I: Dialogue. Seid ihr verrückt geworden?
type: MusicRecording
duration: PT1M18S
duration ms: 78760
explicit: false
by artist: Johann Strauss II
by artist: Julia Varady
by artist: Hermann Prey
by artist: Bernd Weikl
by artist: Lucia Popp
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530624
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530624
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf64fe6f19118fd6e8ed2d52d16883fae7fd25356c4cbec3c1332f771e410f9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF057530624.
  date published: 2026-07-02T03:55:08Z
audio: Die Fledermaus, Act I: Dialogue. Seid ihr verrückt geworden?
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Speechiness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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Die Fledermaus, Act II: Dialogue. Ah, da ist ja die schöne Unbekannte
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duration: PT0M36S
duration ms: 36200
explicit: false
by artist: Johann Strauss II
by artist: Benno Kusche
by artist: Lucia Popp
by artist: Ivan Rebroff
by artist: Evi List
by artist: Julia Varady
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530631
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530631
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81f71baaec7f9e73081918a1f90cafbf6afeed5ad6e44ba3912a677679bab9c. 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/DEF057530631.
  date published: 2026-07-02T05:09:12Z
audio: Die Fledermaus, Act II: Dialogue. Ah, da ist ja die schöne Unbekannte
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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Die Fledermaus, Act I: No. 4, Trio. So muss allein ich bleiben
type: MusicRecording
duration: PT3M46S
duration ms: 226973
explicit: false
by artist: Johann Strauss II
by artist: Julia Varady
by artist: Lucia Popp
by artist: Hermann Prey
by artist: Bavarian State Orchestra
by artist: Carlos Kleiber
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530604
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T19:14:48+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953515
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530604
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa421a198632cbadaab296923c166878a165ece5dc09061733b35cf381461d06f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEF057530604.
  date published: 2026-06-13T12:53:06Z
audio: Die Fledermaus, Act I: No. 4, Trio. So muss allein ich bleiben
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
    value: 0.228
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Mode Name
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Die Fledermaus, Act II: No. 10, Csárdás. Klänge der Heimat
type: MusicRecording
duration: PT4M2S
duration ms: 242026
explicit: false
by artist: Johann Strauss II
by artist: Julia Varady
by artist: Bavarian State Orchestra
by artist: Carlos Kleiber
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530610
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T15:59:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xce1b2c1d8ac299217c09c3879cd41062d184fe90f12c44e255d0d16d8571435c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530610
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1b2c1d8ac299217c09c3879cd41062d184fe90f12c44e255d0d16d8571435c. 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/DEF057530610.
  date published: 2026-06-13T13:32:09Z
audio: Die Fledermaus, Act II: No. 10, Csárdás. Klänge der Heimat
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.474
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.372
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.849
  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.008
  additional property: Key Name
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    value: D
  additional property: Mode Name
    type: PropertyValue
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Die Fledermaus, Act I: Dialogue. Ach...diese Männer
type: MusicRecording
duration: PT1M0S
duration ms: 60960
explicit: false
by artist: Johann Strauss II
by artist: Julia Varady
by artist: René Kollo
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530625
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T22:42:23+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x22845a8460a2351cc6dc33968c6ac3b529e0268ff9d4c532b6293acd362bb012
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530625
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22845a8460a2351cc6dc33968c6ac3b529e0268ff9d4c532b6293acd362bb012. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF057530625.
  date published: 2026-07-02T03:55:08Z
audio: Die Fledermaus, Act I: Dialogue. Ach...diese Männer
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.472
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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    value: 0
  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Die Fledermaus, Act II: Dialogue. Bravo! Bravissimo!
type: MusicRecording
duration: PT2M12S
duration ms: 132040
explicit: false
by artist: Johann Strauss II
by artist: Evi List
by artist: Julia Varady
by artist: Ivan Rebroff
by artist: Bernd Weikl
by artist: Hermann Prey
by artist: Chor der Bayerischen Staatsoper München
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530632
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T00:41:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa40025a8e5ffd0305653c97826c72b3cc944c504be92d5162cd09d8ef8eb2ef1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530632
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Die Fledermaus, Act II: Dialogue. Bravo! Bravissimo!
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Die Fledermaus, Act I: No. 5, Finale. Trinke, Liebchen, trinke schnell
type: MusicRecording
duration: PT10M37S
duration ms: 637666
explicit: false
by artist: Johann Strauss II
by artist: Julia Varady
by artist: René Kollo
by artist: Benno Kusche
by artist: Bavarian State Orchestra
by artist: Carlos Kleiber
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530605
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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  value: 2026-06-11T04:09:02+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x258f2c6cfe641feedc8ecae00d0d7483600a3e1d811d3b1fd51d98a9839321ba
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530605
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258f2c6cfe641feedc8ecae00d0d7483600a3e1d811d3b1fd51d98a9839321ba. 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/DEF057530605.
  date published: 2026-06-13T13:32:09Z
audio: Die Fledermaus, Act I: No. 5, Finale. Trinke, Liebchen, trinke schnell
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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Die Fledermaus, Act II: No. 11, Finale. Im Feuerstrom der Reben
type: MusicRecording
duration: PT2M12S
duration ms: 132800
explicit: false
by artist: Johann Strauss II
by artist: Julia Varady
by artist: Lucia Popp
by artist: Evi List
by artist: Hermann Prey
by artist: Benno Kusche
by artist: Bernd Weikl
by artist: Ivan Rebroff
by artist: Chor der Bayerischen Staatsoper München
by artist: Bavarian State Orchestra
by artist: Carlos Kleiber
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530633
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x5d59fdb4f7eb713398ed5bff931a9e6418933581d2bf43d259d1654cef622dd7
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530633
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d59fdb4f7eb713398ed5bff931a9e6418933581d2bf43d259d1654cef622dd7. 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/DEF057530633.
  date published: 2026-06-13T13:32:09Z
audio: Die Fledermaus, Act II: No. 11, Finale. Im Feuerstrom der Reben
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Danceability
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  additional property: Energy
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Die Fledermaus, Act II: No. 11a, Finale. Herr, Chevalier, ich grüsse Sie!
type: MusicRecording
duration: PT5M21S
duration ms: 321226
explicit: false
by artist: Johann Strauss II
by artist: Julia Varady
by artist: Lucia Popp
by artist: Evi List
by artist: Benno Kusche
by artist: Bernd Weikl
by artist: Hermann Prey
by artist: Ivan Rebroff
by artist: Chor der Bayerischen Staatsoper München
by artist: Bavarian State Orchestra
by artist: Carlos Kleiber
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530634
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-06-19T09:02:00+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x37dd9ee96ac94fd16334896b12b6a3738521af3490359dfd0d07a2b3f75fa512
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530634
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dd9ee96ac94fd16334896b12b6a3738521af3490359dfd0d07a2b3f75fa512. 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/DEF057530634.
  date published: 2026-07-02T03:30:09Z
audio: Die Fledermaus, Act II: No. 11a, Finale. Herr, Chevalier, ich grüsse Sie!
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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Die Fledermaus / Act II: Unter Donner und Blitz, Polka, Op. 324
type: MusicRecording
duration: PT2M55S
duration ms: 175733
explicit: false
by artist: Johann Strauss II
by artist: Bavarian State Orchestra
by artist: Carlos Kleiber
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530612
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8a160d1dd8c780a2f9c024d0e167519ae8dc74e7d7b0241bb9d8d6ba3ea73b1b
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530612
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a160d1dd8c780a2f9c024d0e167519ae8dc74e7d7b0241bb9d8d6ba3ea73b1b. 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/DEF057530612.
  date published: 2026-06-13T13:32:09Z
audio: Die Fledermaus / Act II: Unter Donner und Blitz, Polka, Op. 324
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.272
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.468
  additional property: Energy
    type: PropertyValue
    value: 0.676
  additional property: Speechiness
    type: PropertyValue
    value: 0.074
  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.417
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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    type: PropertyValue
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Die Fledermaus / Act II: No. 11, Finale. c. Genug damit, genug
type: MusicRecording
duration: PT4M7S
duration ms: 247133
explicit: false
by artist: Johann Strauss II
by artist: Julia Varady
by artist: Lucia Popp
by artist: Evi List
by artist: Hermann Prey
by artist: Benno Kusche
by artist: Bernd Weikl
by artist: Ivan Rebroff
by artist: Chor der Bayerischen Staatsoper München
by artist: Bavarian State Orchestra
by artist: Carlos Kleiber
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530613
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-11T04:06:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfd1521ea3357318362e44e6cbd4f5e5552e3b5c93d54c1380ed0eed90aaf1c85
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953528
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530613
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1521ea3357318362e44e6cbd4f5e5552e3b5c93d54c1380ed0eed90aaf1c85. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEF057530613.
  date published: 2026-06-13T15:41:10Z
audio: Die Fledermaus / Act II: No. 11, Finale. c. Genug damit, genug
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 127.581
  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
    value: 0.45
  additional property: Energy
    type: PropertyValue
    value: 0.327
  additional property: Speechiness
    type: PropertyValue
    value: 0.111
  additional property: Acousticness
    type: PropertyValue
    value: 0.971
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.269
  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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Die Fledermaus, Act III: No. 12, Entr'acte
type: MusicRecording
duration: PT0M57S
duration ms: 57373
explicit: false
by artist: Johann Strauss II
by artist: Bavarian State Orchestra
by artist: Carlos Kleiber
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530614
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-19T09:02:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1936d8c0b34db284e76ce44c09d24437c98f992669af0a452b8cd712b2e0aee1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530614
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1936d8c0b34db284e76ce44c09d24437c98f992669af0a452b8cd712b2e0aee1. 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/DEF057530614.
  date published: 2026-07-02T03:30:09Z
audio: Die Fledermaus, Act III: No. 12, Entr'acte
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 154.541
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.483
  additional property: Energy
    type: PropertyValue
    value: 0.306
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.781
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.89
  additional property: Liveness
    type: PropertyValue
    value: 0.337
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.763
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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Die Fledermaus, Act III: Dialogue. Täubchen, das entflattert ist
type: MusicRecording
duration: PT1M7S
duration ms: 67626
explicit: false
by artist: Johann Strauss II
by artist: René Kollo
by artist: Franz Muxeneder
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 1976-01-01
isrc code: DEF057530636
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T09:45:15+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x901568c605224a3ff11707395f274d6c8f97454ade02dc2c33ba9944a94574d2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057530636
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subject of: OpenTimestamps Proof of Existence
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audio: Die Fledermaus, Act III: Dialogue. Täubchen, das entflattert ist
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Die Fledermaus, Act III: No. 13, Melodram. So, da wär'n wir ja zu Hause
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Die Fledermaus, Act III: Dialogue. Ah, der Herr Direktor ist entschlafen
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
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Die Fledermaus, Act III: No. 14, Couplet. Spiel' ich die Unschuld vom Lande
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T15:41:10Z
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Die Fledermaus, Act III: No. 15, Trio. Ich stehe voll Zagen
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Die Fledermaus, Act III: No. 15, Trio. Ich stehe voll Zagen
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Die Fledermaus, Act III: Dialogue. Also, du willst mir Vorwürfe machen?
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
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Die Fledermaus, Act III: No. 16, Finale. O Fledermaus, o Fledermaus
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T15:41:10Z
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Offenbach: Die Insel Tulipatan
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Stolz: Himmelblaue Träume (Highlights)
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Carlos Kleiber - Complete Recordings on Deutsche Grammophon
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T05:09:12Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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  subject of: OpenTimestamps Proof of Existence
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track: Die Fledermaus: Overture
track: Symphony No. 5 in C Minor, Op. 67: II. Andante con moto
track: Symphony No. 5 in C Minor, Op. 67: III. Allegro
track: Symphony No. 5 in C Minor, Op. 67: IV. Allegro
track: Symphony No. 7 in A Major, Op. 92: I. Poco sostenuto - Vivace
track: Symphony No. 8 in B Minor, D. 759 "Unfinished": I. Allegro moderato
track: Symphony No. 7 in A Major, Op. 92: II. Allegretto
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OTSVerificationAPI
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd950f9d6ca75dbb372956876450a57eabb352ef6ba2b6235e0a998cd517d0205. 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/DEF057801441.
date published: 2026-07-08T08:56:20Z

Symphony No. 3 in D Major, D. 200: I. Adagio maestoso - Allegro con brio
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Die Fledermaus: Overture
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by artist: Bavarian State Orchestra
by artist: Carlos Kleiber
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Die Fledermaus: Overture
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Symphony No. 5 in C Minor, Op. 67: II. Andante con moto
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by artist: Wiener Philharmoniker
by artist: Carlos Kleiber
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genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Symphony No. 5 in C Minor, Op. 67: II. Andante con moto
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Symphony No. 5 in C Minor, Op. 67: III. Allegro
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Symphony No. 5 in C Minor, Op. 67: III. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Symphony No. 5 in C Minor, Op. 67: IV. Allegro
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Symphony No. 7 in A Major, Op. 92: I. Poco sostenuto - Vivace
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Symphony No. 7 in A Major, Op. 92: III. Presto - Assai meno presto
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Strauß - Die Tänzerin Fanny Elssler
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Im Reich der Operette, Vol. 3 (Favoriten - Raritäten - Entdeckungen)
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Offenbach 50
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Künneke: Liselott
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Im Reich der Operette, Vol. 1 (Favoriten - Raritäten - Entdeckungen)
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Gurre - Lieder
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    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
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    date published: 2026-07-08T03:22:41Z
  audio: Das Land des Lächelns - Arr. Bert Grund / Act 2: Dein ist mein ganzes Herz
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track: Hello Mary Lou
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  by artist: Gene Pitney
  by artist: René Kollo
  by artist: Orchester Rüdiger Piesker
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  additional property: OTSVerificationAPI
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066201840
  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T03:20:19Z
  audio: Hello Mary Lou
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Meister der Operette: Robert Stolz
type: MusicAlbum
date published: 2015-04-03

Can-Can - Best Of Offenbach
type: MusicAlbum
date published: 2010-09-20
track: Orpheus in der Unterwelt · Operette in 2 Akten (1988 Digital Remaster): Ouvertüre (Orchester)
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  by artist: Willy Mattes
  by artist: Philharmonia Hungarica
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  genre: classical
  genre: german-romanticism
  genre: late-romantic-era
  genre: french-opera
  genre: french-romanticism
  genre: operetta
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60430d4b2b39f6c903bf8af3ff713c3973e14271678bb69ef2dd2c60de403beb. 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/DEC628700759.
    date published: 2026-07-08T03:22:41Z
  audio: Orpheus in der Unterwelt · Operette in 2 Akten (1988 Digital Remaster): Ouvertüre (Orchester)
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    additional property: Valence (Positivity)
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track: Orpheus in der Unterwelt - 1. Akt (1988 Digital Remaster): Als ich noch Prinz war von Arkadien
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  by artist: Jacques Offenbach
  by artist: Theo Lingen
  by artist: Philharmonia Hungarica
  by artist: Willy Mattes
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  genre: french-opera
  genre: french-romanticism
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
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    date published: 2026-07-08T03:22:41Z
  audio: Orpheus in der Unterwelt - 1. Akt (1988 Digital Remaster): Als ich noch Prinz war von Arkadien
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Valence (Positivity)
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Stolz: Zwei Herzen im Dreivierteltakt & Wenn die kleinen Veilchen blühen (Highlights)
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date published: 1965-06-26

Ewig junger Robert Stolz
type: MusicAlbum
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
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    additional property: Danceability
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    additional property: Acousticness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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Offenbach: Die schöne Helena
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date published: 2011-03-28
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  by artist: Muenchner Rundfunkorchester
  by artist: Munich Radio Orchestra
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  genre: classical
  genre: german-romanticism
  genre: late-romantic-era
  genre: french-opera
  genre: french-romanticism
  genre: operetta
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
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    date published: 2026-07-08T08:56:20Z
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  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T03:53:27Z
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    additional property: Speechiness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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  duration: PT1M20S
  duration ms: 80920
  explicit: false
  by artist: Jacques Offenbach
  by artist: Willy Mattes
  by artist: Muenchner Rundfunkorchester
  by artist: Munich Radio Orchestra
  in album: Offenbach: Die schöne Helena
    type: MusicAlbum
    date published: 2011-03-28
  genre: classical
  genre: german-romanticism
  genre: late-romantic-era
  genre: french-opera
  genre: french-romanticism
  genre: operetta
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  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
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  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Offenbach: Die schöne Helena (Gesamt) 1. Akt (1994 Digital Remaster): Dialog und Nr. 6bis: Melodram
track: Offenbach: Die schöne Helena (Gesamt) II (1994 Digital Remaster): Nr. 20: Die Galeere von Cythere
track: Offenbach: Die schöne Helena (Gesamt) 1. Akt (1994 Digital Remaster): Nr. 8: Ehre! Lob sei dem Sieger dargebracht

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CopyrightStatus
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CopyrightRegisteredAt
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CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0x012c5d5ec271261c6e2232c1e0df89f62087c5fe6a03eaeaf936031c393eee71

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OTSBitcoinBlock
type: PropertyValue
value: 957124

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957124

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC629000340

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:53:27Z

OTSVerifyInstructions
type: PropertyValue
value: 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012c5d5ec271261c6e2232c1e0df89f62087c5fe6a03eaeaf936031c393eee71. 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/DEC629000340.
date published: 2026-07-08T03:53:27Z

Offenbach: Die schöne Helena (Gesamt) 1. Akt (1994 Digital Remaster): Dialog und Nr. 6bis: Melodram
type: AudioObject
additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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Offenbach: Die schöne Helena (Gesamt) II (1994 Digital Remaster): Nr. 20: Die Galeere von Cythere
type: MusicRecording
duration: PT3M40S
duration ms: 220026
explicit: false
by artist: Jacques Offenbach
by artist: Chor des Bayerischen Rundfunks/Brigitte Fassbaender/Nicolai Gedda/Ferry Gruber /Norbert Orth/Willy Mattes
by artist: Willy Mattes
by artist: Bavarian Radio Chorus
by artist: Muenchner Rundfunkorchester
by artist: Munich Radio Orchestra
in album: Offenbach: Die schöne Helena
  type: MusicAlbum
  date published: 2011-03-28
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
isrc code: DEC629000363
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC629000363
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50921c0db079ddbd1dce097cc7dd207f87d3a6adaad285986599fff2b216786. 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/DEC629000363.
  date published: 2026-07-08T03:22:41Z
audio: Offenbach: Die schöne Helena (Gesamt) II (1994 Digital Remaster): Nr. 20: Die Galeere von Cythere
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Paul Abraham: Viktoria und ihr Husar/Blume von Hawaii
type: MusicAlbum
date published: 1965-11-09

Offenbach: Der Regimentszauber
type: MusicAlbum
date published: 2014-08-29

Es muss was Wunderbares sein - Berühmte Operetten-Duette
type: MusicAlbum
date published: 2014-10-24
track: Das Land des Lächelns: Wer hat die Liebe uns ins Herz gesenkt
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  duration: PT4M42S
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  by artist: Franz Lehár
  by artist: Margit Schramm
  by artist: Rudolf Schock
  by artist: Robert Stolz
  in album: Es muss was Wunderbares sein - Berühmte Operetten-Duette
    type: MusicAlbum
    date published: 2014-10-24
  genre: opera
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  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957124
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE476500093
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:53:27Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc527373aa8ba9968de53dc692ccbe7d0c176ef782c5237957e09a101794c4d. 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/DEE476500093.
    date published: 2026-07-08T03:53:27Z
  audio: Das Land des Lächelns: Wer hat die Liebe uns ins Herz gesenkt
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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    additional property: Mode Name
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track: Im weißen Rössl: Es muss was Wunderbares sein
  type: MusicRecording
  duration: PT2M47S
  duration ms: 167466
  explicit: false
  by artist: Ralph Benatzky
  by artist: Peter Alexander
  by artist: Ingeborg Hallstein
  by artist: Johannes Fehring
  in album: Es muss was Wunderbares sein - Berühmte Operetten-Duette
    type: MusicAlbum
    date published: 2014-10-24
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE477100386
  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685f86cb821a04c773696bba10ae9bb1d65c341af660b02cb020523e5c03ecea. 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/DEE477100386.
    date published: 2026-07-08T03:20:19Z
  audio: Im weißen Rössl: Es muss was Wunderbares sein
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
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    additional property: Loudness (dB)
      type: PropertyValue
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    additional property: Key Name
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    additional property: Mode Name
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track: Die lustige Witwe: Lippen schweigen
  type: MusicRecording
  duration: PT2M55S
  duration ms: 175466
  explicit: false
  by artist: Franz Lehár
  by artist: Rudolf Schock
  by artist: Margit Schramm
  by artist: Robert Stolz
  in album: Es muss was Wunderbares sein - Berühmte Operetten-Duette
    type: MusicAlbum
    date published: 2014-10-24
  genre: opera
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Die lustige Witwe: Lippen schweigen
track: Der Vogelhändler: Schenkt man sich Rosen in Tirol
track: Wiener Blut: Das Eine kann ich nicht verzeih'n - Ich war ein echtes Wiener Blut - Wiener Blut, Wiener Blut
track: Gräfin Mariza: Einmal möcht' ich wieder tanzen

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 957124

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957124

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE476700078

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:53:27Z

OTSVerifyInstructions
type: PropertyValue
value: 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb72488f448ff342f513fa7878608ae7df203e5d5040e7daaddc7a5f42e19f1. 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/DEE476700078.
date published: 2026-07-08T03:53:27Z

Die lustige Witwe: Lippen schweigen
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 125.058
additional property: Musical Key
  type: PropertyValue
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additional property: Mode (Major/Minor)
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  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.263
additional property: Energy
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additional property: Speechiness
  type: PropertyValue
  value: 0.042
additional property: Acousticness
  type: PropertyValue
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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Der Vogelhändler: Schenkt man sich Rosen in Tirol
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duration: PT2M53S
duration ms: 173666
explicit: false
by artist: Carl Zeller
by artist: Rudolf Schock
by artist: Erika Köth
by artist: Frank Fox
in album: Es muss was Wunderbares sein - Berühmte Operetten-Duette
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  date published: 2014-10-24
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE477500038
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3789a4026ae60263d899e84f66c1e1560471b1da8cf4207280e7f4abb4e1886. 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/DEE477500038.
  date published: 2026-07-08T08:56:20Z
audio: Der Vogelhändler: Schenkt man sich Rosen in Tirol
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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Wiener Blut: Das Eine kann ich nicht verzeih'n - Ich war ein echtes Wiener Blut - Wiener Blut, Wiener Blut
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duration: PT5M22S
duration ms: 322640
explicit: false
by artist: Johann Strauss II
by artist: Hilde Gueden
by artist: Rudolf Schock
by artist: Robert Stolz
in album: Es muss was Wunderbares sein - Berühmte Operetten-Duette
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7f521995a4ba720683dc52f6f1ec056d2b66c5a22e6964fa9e0fff5564a8968e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE476500047
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f521995a4ba720683dc52f6f1ec056d2b66c5a22e6964fa9e0fff5564a8968e. 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/DEE476500047.
  date published: 2026-07-08T03:53:27Z
audio: Wiener Blut: Das Eine kann ich nicht verzeih'n - Ich war ein echtes Wiener Blut - Wiener Blut, Wiener Blut
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  additional property: Tempo (BPM)
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    value: 143.857
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.442
  additional property: Energy
    type: PropertyValue
    value: 0.217
  additional property: Speechiness
    type: PropertyValue
    value: 0.069
  additional property: Acousticness
    type: PropertyValue
    value: 0.975
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.069
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.275
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.554
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Gräfin Mariza: Einmal möcht' ich wieder tanzen
type: MusicRecording
duration: PT2M3S
duration ms: 123800
explicit: false
by artist: Emmerich Kálmán
by artist: Margit Schramm
by artist: Rudolf Schock
by artist: Robert Stolz
in album: Es muss was Wunderbares sein - Berühmte Operetten-Duette
  type: MusicAlbum
  date published: 2014-10-24
genre: fado
isrc code: DEE476700108
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T13:41:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcc862a18a6ee9615fd4356c1008f4d5aaa9b97b51a968c22ca9bb68a1674fde0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE476700108
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc862a18a6ee9615fd4356c1008f4d5aaa9b97b51a968c22ca9bb68a1674fde0. 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/DEE476700108.
  date published: 2026-07-08T08:56:20Z
audio: Gräfin Mariza: Einmal möcht' ich wieder tanzen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.024
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.297
  additional property: Energy
    type: PropertyValue
    value: 0.403
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.926
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.105
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.391
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.099
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Suppé: Boccaccio (excerpts) - "Operetta Highlights"
type: MusicAlbum
date published: 1994-10-04

#nowspinning Offenbach
type: MusicAlbum
date published: 2017-03-20
track: Orpheus in der Unterwelt: Ouvertüre (Orchester)
  type: MusicRecording
  duration: PT8M53S
  duration ms: 533426
  explicit: false
  by artist: Jacques Offenbach
  by artist: Adolf Dallapozza
  by artist: Gisela Litz
  by artist: Grit van Jüten
  by artist: Theo Lingen
  by artist: Ferry Gruber
  by artist: Kari Lövaas
  by artist: Brigitte Lindner
  by artist: Chor der Kölner Oper
  by artist: Philharmonia Hungarica
  by artist: Willy Mattes
  by artist: Anneliese Rothenberger
  in album: #nowspinning Offenbach
    type: MusicAlbum
    date published: 2017-03-20
  genre: classical
  genre: german-romanticism
  genre: late-romantic-era
  genre: french-opera
  genre: french-romanticism
  genre: operetta
  isrc code: DEC628700759
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T06:40:34+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x60430d4b2b39f6c903bf8af3ff713c3973e14271678bb69ef2dd2c60de403beb
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC628700759
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60430d4b2b39f6c903bf8af3ff713c3973e14271678bb69ef2dd2c60de403beb. 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/DEC628700759.
    date published: 2026-07-08T08:56:20Z
  audio: Orpheus in der Unterwelt: Ouvertüre (Orchester)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 106.733
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.184
    additional property: Energy
      type: PropertyValue
      value: 0.228
    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.907
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.569
    additional property: Liveness
      type: PropertyValue
      value: 0.36
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.172
    additional property: Loudness (dB)
      type: PropertyValue
      value: -19.525
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major

The Gypsy Baron
type: MusicAlbum
date published: 2000-01-01

Kurt Eichhorn conducts Carl Orff
type: MusicAlbum
date published: 1970
track: Carmina Burana: O Fortuna
  type: MusicRecording
  duration: PT2M34S
  duration ms: 154600
  explicit: false
  by artist: Carl Orff
  by artist: Kurt Eichhorn
  in album: Kurt Eichhorn conducts Carl Orff
    type: MusicAlbum
    date published: 1970
  isrc code: DEE477300010
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T00:16:02+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8c2041ca7e58228e216c97d71a6149691cfb24b3dc7f442df126bd89cbf07f6c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE477300010
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2041ca7e58228e216c97d71a6149691cfb24b3dc7f442df126bd89cbf07f6c. 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/DEE477300010.
    date published: 2026-07-08T03:20:19Z
  audio: Carmina Burana: O Fortuna
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 143.484
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.358
    additional property: Energy
      type: PropertyValue
      value: 0.192
    additional property: Speechiness
      type: PropertyValue
      value: 0.034
    additional property: Acousticness
      type: PropertyValue
      value: 0.913
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.699
    additional property: Liveness
      type: PropertyValue
      value: 0.26
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.151
    additional property: Loudness (dB)
      type: PropertyValue
      value: -17.79
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Carmina Burana: Fortune plango vulnera
  type: MusicRecording
  duration: PT2M48S
  duration ms: 168400
  explicit: false
  by artist: Carl Orff
  by artist: Kurt Eichhorn
  in album: Kurt Eichhorn conducts Carl Orff
    type: MusicAlbum
    date published: 1970
  isrc code: DEE477300011
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T06:02:33+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9bba5d301e864e198e47edb0a2d3a2e8569afbb70ad11e2fd058b4250199f657
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE477300011
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bba5d301e864e198e47edb0a2d3a2e8569afbb70ad11e2fd058b4250199f657. 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/DEE477300011.
    date published: 2026-07-08T03:20:19Z
  audio: Carmina Burana: Fortune plango vulnera
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 131.149
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.427
    additional property: Energy
      type: PropertyValue
      value: 0.515
    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.918
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.004
    additional property: Liveness
      type: PropertyValue
      value: 0.362
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.639
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.072
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Carmina Burana: Ecce gratum
  type: MusicRecording
  duration: PT2M57S
  duration ms: 177666
  explicit: false
  by artist: Carl Orff
  by artist: Kurt Eichhorn
  in album: Kurt Eichhorn conducts Carl Orff
    type: MusicAlbum
    date published: 1970
  isrc code: DEE477300014
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T12:24:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7a733da3c0da3f41ad93be3d192522bafd4839e6729705663f21e570ce3ea464
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957124
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957124
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Carmina Burana: Ecce gratum
track: Carmina Burana: Amor volat undique
track: Carmina Burana: Circa mea pectora
track: Carmina Burana: In trutina

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE477300014

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:53:27Z

OTSVerifyInstructions
type: PropertyValue
value: 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a733da3c0da3f41ad93be3d192522bafd4839e6729705663f21e570ce3ea464. 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/DEE477300014.
date published: 2026-07-08T03:53:27Z

Carmina Burana: Ecce gratum
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 139.295
additional property: Musical Key
  type: PropertyValue
  value: 5
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.38
additional property: Energy
  type: PropertyValue
  value: 0.333
additional property: Speechiness
  type: PropertyValue
  value: 0.033
additional property: Acousticness
  type: PropertyValue
  value: 0.925
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.168
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.328
additional property: Loudness (dB)
  type: PropertyValue
  value: -16.303
additional property: Key Name
  type: PropertyValue
  value: F
additional property: Mode Name
  type: PropertyValue
  value: Major

Carmina Burana: Amor volat undique
type: MusicRecording
duration: PT2M59S
duration ms: 179093
explicit: false
by artist: Carl Orff
by artist: Kurt Eichhorn
in album: Kurt Eichhorn conducts Carl Orff
  type: MusicAlbum
  date published: 1970
isrc code: DEE477300024
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T19:35:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xffb42b8a4b8eba17b379f41183dafadad96f7a96ac6fd6df7f06b37d0073ece7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE477300024
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb42b8a4b8eba17b379f41183dafadad96f7a96ac6fd6df7f06b37d0073ece7. 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/DEE477300024.
  date published: 2026-07-08T03:53:27Z
audio: Carmina Burana: Amor volat undique
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 122.357
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.257
  additional property: Energy
    type: PropertyValue
    value: 0.019
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.988
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.079
  additional property: Liveness
    type: PropertyValue
    value: 0.086
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.057
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.151
  additional property: Key Name
    type: PropertyValue
    value: A
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Carmina Burana: Circa mea pectora
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Carmina Burana: In trutina
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Die Zirkusprinzessin
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Künneke: Liselott
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Dostal: Monika (Querschnitt)
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Lehar: Das Land des Lächelns (excerpts) - "Operetta Highlights"
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Kálmán: Die Zirkusprinzessin (Highlights)
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Stolz: Venus in Seide (Highlights)
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Offenbach: Orpheus In Der Unterwelt
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Lehar: Das Land des Lächelns (Excerpts)
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Kálmán: Gräfin Mariza (Excerpts)
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Sound Picture Postcard of Varaždin
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Orff: Die Kluge; Der Mond
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Lehar: Die Lustige Witwe - The Sony Opera House
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Kálmán: Die Zirkusprinzessin (excerpts) - "Operetta Highlights"
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Stolz: Frühling im Prater
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Stolz: Venus in Seide
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Kálmán: Die Csárdasfürstin (Excerpts)
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