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genre: classical
genre: opera
genre: requiem
description: Walter Berry may refer to: Walter Berry (bass-baritone) (1929–2000), Austrian opera singer Walter Berry (basketball) (born 1964), American former professional basketball player Walter Berry (politici
popularity: 34
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  track: Piano Concerto No. 4 in G Major, Op. 58: I. Allegro moderato (Cadenza: Kempff)
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  track: Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
  track: Symphony No. 5 in C Minor, Op. 67: II. Andante con moto
  track: Symphony No. 9 in D Minor, Op. 125 "Choral": I. Allegro ma non troppo, un poco maestoso
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  track: Symphony No. 9 in D Minor, Op. 125 "Choral": II. Scherzo. Molto vivace – Presto
  track: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": III. Rondo. Allegro
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  track: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight Sonata": I. Adagio sostenuto
  track: Symphony No. 7 in A Major, Op. 92: I. Poco sostenuto - Vivace
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  track: Symphony No. 7 in A Major, Op. 92: II. Allegretto
  track: Symphony No. 9 in D Minor, Op. 125 "Choral": IVc-j. Presto. O Freunde nicht diese Töne – Prestissimo - Recorded 1962
  track: Symphony No. 7 in A Major, Op. 92: III. Presto - Assai meno presto
  track: Symphony No. 7 in A Major, Op. 92: IV. Allegro con brio
  track: Piano Sonata No. 23 in F Minor, Op. 57 "Appassionata": I. Allegro assai
album: Il dissoluto punito ossia Il Don Giovanni
album: Mozart: Così fan tutte, K. 588 (Sung in German) [Recorded 1957]
album: Mozart: Requiem Mass in D minor, K. 626
album: Mozart: Requiem; Adagio & Fugue K.546
album: Mozart: Die Zauberflote
album: Le Nozze di Figaro Kv 492
album: J.S. Bach: St. Matthew Passion, BWV 244
album: Iphigenie in Aulis (Live)
album: Liebermann: Penelope (Live)
album: Schumann: Spanisches Liederspiel, Op. 74 - Brahms: 18 Liebeslieder Waltzes, Op. 52 (Live)
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album: R. Strauss: Capriccio, Op. 85, TrV 279 (Excerpts) [Live]
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album: Don Giovanni, Wozzek, Fidelio, Frau ohne Schatten, Lohengrin, Cosi fan tutte, Nozze di Figaro, Rosenkavalier, Parsifal, Falstaff & Capriccio
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album: Kienzl: Der Kuhreigen, Op. 85 [Recorded 1951]
album: Kattnigg: Das hölzerne Herz
album: Pfitzner: Palestrina (Live 1955)
album: Dvořák: Rusalka, Op. 114, B. 203 (Sung in German)
album: Adam: La poupée de Nuremberg (Sung in German)
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album: Siv Wennberg: A Great Primadonna, Vol. 3
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album: Messe In C-Moll KV 427
album: Weber: Highlights from Der Freischutz
album: The Comic Mozart
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track: Die Fledermaus, Act I: No. 3, Duet. Komm mit mir zum Souper
track: Die Fledermaus, Act II: No. 8a, Ach, meine Herr'n und Damen
track: Die Fledermaus, Act II: No. 11, Finale. b. Herr, Chevalier, ich grüsse Sie!
track: Die Fledermaus, Act II: No. 11, Finale. c. Genug damit, genug
track: Die Fledermaus, Act III: No. 16, Finale. O Fledermaus, o Fledermaus
track: Mozart: Don Giovanni, K. 527, Act 1: "Non sperar, se non m’uccidi" (Donna Anna, Don Giovanni, Leporello)
track: Mozart: Don Giovanni, K. 527, Act 1: "Manco male è partita" (Don Giovanni, Leporello, Zerlina, Masetto)
track: Cosi fan Tutte, K. 588, Act I: Soave sia il vento (Fiordiligi/Dorabella/Don Alfonso)

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Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
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  date published: 2026-06-13T12:47:07Z
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Symphony No. 5 in C Minor, Op. 67: II. Andante con moto
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Symphony No. 9 in D Minor, Op. 125 "Choral": I. Allegro ma non troppo, un poco maestoso
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subject of: OpenTimestamps Proof of Existence
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audio: Symphony No. 9 in D Minor, Op. 125 "Choral": I. Allegro ma non troppo, un poco maestoso
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Symphony No. 5 in C Minor, Op. 67: III. Allegro
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subject of: OpenTimestamps Proof of Existence
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Symphony No. 9 in D Minor, Op. 125 "Choral": II. Scherzo. Molto vivace – Presto
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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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Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": III. Rondo. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T07:16:32Z
audio: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": III. Rondo. Allegro
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Symphony No. 5 in C Minor, Op. 67: IV. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:53:06Z
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Symphony No. 9 in D Minor, Op. 125 "Choral": III. Adagio molto e cantabile
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  date published: 2026-07-02T05:09:12Z
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight Sonata": I. Adagio sostenuto
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Symphony No. 7 in A Major, Op. 92: I. Poco sostenuto - Vivace
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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/DEF057601362
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b76abef91bda3d451efa4dba4560babbb1072a607f55ed6244758148a5d3a5. 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/DEF057601362.
  date published: 2026-06-13T15:41:10Z
audio: Symphony No. 7 in A Major, Op. 92: I. Poco sostenuto - Vivace
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Symphony No. 9 in D Minor, Op. 125 "Choral": IVa-b. Presto – Allegro assai - Recorded 1962
type: MusicRecording
duration: PT6M22S
duration ms: 382066
explicit: false
by artist: Ludwig van Beethoven
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: Originals Beethoven Box
  type: MusicAlbum
  date published: 1995-01-01
popularity: 11
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: DEF056201687
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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/DEF056201687
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8392be11448cf54fabeb99cdf19869d99c09642fd1c0643ebc00b6497e8eef89. 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/DEF056201687.
  date published: 2026-07-02T05:09:12Z
audio: Symphony No. 9 in D Minor, Op. 125 "Choral": IVa-b. Presto – Allegro assai - Recorded 1962
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight Sonata": II. Allegretto
type: MusicRecording
duration: PT2M19S
duration ms: 139400
explicit: false
by artist: Ludwig van Beethoven
by artist: Wilhelm Kempff
in album: Originals Beethoven Box
  type: MusicAlbum
  date published: 1995-01-01
popularity: 5
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: DEF056500172
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
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056500172
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be663000a2e3a22b6ff8c80afb816abaaf7a51028abcdc8d71639201c03b2f7. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056500172.
  date published: 2026-07-07T20:41:57Z
audio: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight Sonata": II. Allegretto
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Symphony No. 7 in A Major, Op. 92: II. Allegretto
type: MusicRecording
duration: PT8M9S
duration ms: 489000
explicit: false
by artist: Ludwig van Beethoven
by artist: Wiener Philharmoniker
by artist: Carlos Kleiber
in album: Originals Beethoven Box
  type: MusicAlbum
  date published: 1995-01-01
popularity: 32
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: DEF057601361
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
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057601361
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8696a868897006f7eb78aacaa2d04edaad9677b12bda548f67fb46f0197748. 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/DEF057601361.
  date published: 2026-06-13T15:41:10Z
audio: Symphony No. 7 in A Major, Op. 92: II. Allegretto
  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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    type: PropertyValue
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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: Valence (Positivity)
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Symphony No. 9 in D Minor, Op. 125 "Choral": IVc-j. Presto. O Freunde nicht diese Töne – Prestissimo - Recorded 1962
type: MusicRecording
duration: PT17M31S
duration ms: 1051933
explicit: false
by artist: Ludwig van Beethoven
by artist: Gundula Janowitz
by artist: Hilde Rössel Majdan
by artist: Waldemar Kmentt
by artist: Walter Berry
by artist: Wiener Singverein
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: Originals Beethoven Box
  type: MusicAlbum
  date published: 1995-01-01
popularity: 11
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: DEF056201688
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T18:22:05+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056201688
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb6c122ecb1d64d4a41136261e99ed7889461d39d078a5694351f853aa8b189. 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/DEF056201688.
  date published: 2026-07-02T03:30:09Z
audio: Symphony No. 9 in D Minor, Op. 125 "Choral": IVc-j. Presto. O Freunde nicht diese Töne – Prestissimo - Recorded 1962
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    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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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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  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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Symphony No. 7 in A Major, Op. 92: III. Presto - Assai meno presto
type: MusicRecording
duration: PT8M15S
duration ms: 495000
explicit: false
by artist: Ludwig van Beethoven
by artist: Wiener Philharmoniker
by artist: Carlos Kleiber
in album: Originals Beethoven Box
  type: MusicAlbum
  date published: 1995-01-01
popularity: 27
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: DEF057601363
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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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
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057601363
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776db11e9050fc41fce3314a7f5354c137936c548f001006f4a0bf53de7072c0. 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/DEF057601363.
  date published: 2026-06-13T15:41:10Z
audio: Symphony No. 7 in A Major, Op. 92: III. Presto - Assai meno presto
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  additional property: Acousticness
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Symphony No. 7 in A Major, Op. 92: IV. Allegro con brio
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duration: PT8M36S
duration ms: 516000
explicit: false
by artist: Ludwig van Beethoven
by artist: Wiener Philharmoniker
by artist: Carlos Kleiber
in album: Originals Beethoven Box
  type: MusicAlbum
  date published: 1995-01-01
popularity: 18
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: DEF057601364
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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
  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 0xfa6c58f6f4f9ed2a10fe81b7894e2bd883dc9d08e91fa67a0b88bea0798b2f40. 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/DEF057601364.
  date published: 2026-06-13T13:32:09Z
audio: Symphony No. 7 in A Major, Op. 92: IV. Allegro con brio
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Piano Sonata No. 23 in F Minor, Op. 57 "Appassionata": I. Allegro assai
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Don Giovanni, Wozzek, Fidelio, Frau ohne Schatten, Lohengrin, Cosi fan tutte, Nozze di Figaro, Rosenkavalier, Parsifal, Falstaff & Capriccio
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Siv Wennberg: A Great Primadonna, Vol. 3
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Adam: Die Nürnberger Puppe
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    date published: 2026-07-08T08:56:20Z
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  audio: Fidelio, Op. 72
track: Egmont, Op. 84

Philharmonia Orchestra
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Fidelio (Complete Opera)
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date published: 2026-07-08T08:56:20Z

Fidelio, Op. 72
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Fidelio, Op. 72
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Egmont, Op. 84
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Fidelio, Op. 72
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Fidelio, Op. 72
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Beethoven: Fidelio
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Mozart - Don Giovanni
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Messe In C-Moll KV 427
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The Comic Mozart
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Highlights From Don Giovanni
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track: Symphony No. 9 in D Minor, Op. 125 "Choral": III. Adagio molto e cantabile
track: Symphony No. 9 in D Minor, Op. 125 "Choral": IVc-j. Presto. O Freunde nicht diese Töne – Prestissimo - Recorded 1962

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Symphony No. 9 in D Minor, Op. 125 "Choral": II. Scherzo. Molto vivace – Presto
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Mozart: Die Zauberflöte, K. 620 (Live)
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Egk: Irische Legende (Live)
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Bach: Weihnachtsoratorium, BWV 248
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Don Giovanni, Wozzek, Fidelio, Frau ohne Schatten, Lohengrin, Cosi fan tutte, Nozze di Figaro, Rosenkavalier, Parsifal, Falstaff & Capriccio
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Mozart: Così fan tutte, K. 588, Act 1: Terzettino. "Soave sia il vento" (Fiordiligi, Dorabella, Don Alfonso)
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Die Fledermaus, Act I: No. 3, Duet. Komm mit mir zum Souper
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Die Fledermaus, Act II: No. 8a, Ach, meine Herr'n und Damen
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Die Fledermaus, Act II: No. 11, Finale. b. Herr, Chevalier, ich grüsse Sie!
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Die Fledermaus, Act II: No. 11, Finale. c. Genug damit, genug
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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: 2026-07-08T03:20:19Z
audio: Die Fledermaus, Act III: No. 16, Finale. O Fledermaus, o Fledermaus
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Mozart: Don Giovanni, K. 527, Act 1: "Non sperar, se non m’uccidi" (Donna Anna, Don Giovanni, Leporello)
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by artist: Walter Berry
by artist: New Philharmonia Orchestra
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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: 2026-07-08T03:53:27Z
audio: Mozart: Don Giovanni, K. 527, Act 1: "Non sperar, se non m’uccidi" (Donna Anna, Don Giovanni, Leporello)
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Mozart: Don Giovanni, K. 527, Act 1: "Manco male è partita" (Don Giovanni, Leporello, Zerlina, Masetto)
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genre: classical
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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: 2026-07-08T08:56:20Z
audio: Mozart: Don Giovanni, K. 527, Act 1: "Manco male è partita" (Don Giovanni, Leporello, Zerlina, Masetto)
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Cosi fan Tutte, K. 588, Act I: Soave sia il vento (Fiordiligi/Dorabella/Don Alfonso)
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by artist: Walter Berry
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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: 2026-07-08T03:53:27Z
audio: Cosi fan Tutte, K. 588, Act I: Soave sia il vento (Fiordiligi/Dorabella/Don Alfonso)
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