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description: thumb|Rudolf Buchbinder (2010) Rudolf Buchbinder (born 1 December 1946, Litoměřice, Czechoslovakia) is an Austrian classical pianist. Biography Buchbinder studied with Bruno Seidlhofer at the Vienna
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Liebeslied, S. 566 (After Schumann’s Widmung, Op. 25 No. 1)
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5 Lieder, Op. 49: No. 2, An ein Veilchen (Arr. Reger for Piano)
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5 Lieder, Op. 49: No. 4, Wiegenlied (Arr. Reger for Piano)
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6 Lieder, Op. 85: No. 6, In Waldeinsamkeit (Arr. Reger for Piano)
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Impromptus, D 899, Op. 90: III. Andante
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4 Impromptus, Op. 90, D. 899: III. Andante
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4 Impromptus, Op. 90, D. 899: IV. Allegretto
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Beethoven: Piano Concerto No. 1 in C Major, Op. 15
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Beethoven: Piano Concerto No. 4 in G Major, Op. 58
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Brahms – Reger: Song Transcriptions
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
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track: 5 Lieder, Op. 49: No. 2, An ein Veilchen (Arr. Reger for Piano)
track: 5 Lieder, Op. 49: No. 4, Wiegenlied (Arr. Reger for Piano)
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  subject of: OpenTimestamps Proof of Existence
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track: 6 Lieder, Op. 97: No. 1, Nachtigall (Arr. Reger for Piano)
track: 5 Lieder, Op. 105: No. 1, Wie Melodien zieht es mir (Arr. Reger for Piano)
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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

OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:53:27Z

5 Romanzen und Gesänge, Op. 84: No. 4, Vergebliches Ständchen (Arr. Reger for Piano)
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6 Lieder, Op. 86: No. 2, Feldeinsamkeit (Arr. Reger for Piano)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: 6 Lieder, Op. 86: No. 2, Feldeinsamkeit (Arr. Reger for Piano)
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5 Lieder, Op. 94: No. 4, Sapphische Ode (Arr. Reger for Piano)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T07:16:32Z
audio: 5 Lieder, Op. 94: No. 4, Sapphische Ode (Arr. Reger for Piano)
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7 Lieder, Op. 95: No. 4, Der Jäger (Arr. Reger for Piano)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: 7 Lieder, Op. 95: No. 4, Der Jäger (Arr. Reger for Piano)
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4 Lieder, Op. 96: No. 1, Der Tod, das ist die kühle Nacht (Arr. Reger for Piano)
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4 Lieder, Op. 96: No. 2, Wir wandelten, wir zwei zusammen (Arr. Reger for Piano)
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6 Lieder, Op. 97: No. 1, Nachtigall (Arr. Reger for Piano)
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5 Lieder, Op. 105: No. 1, Wie Melodien zieht es mir (Arr. Reger for Piano)
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5 Lieder, Op. 106: No. 1, Ständchen (Arr. Reger for Piano)
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Mozart: Piano Concertos Nos. 22 & 27
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Rudolf Buchbinder Plays Beethoven
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track: Piano Sonata No. 11 in B-Flat Major, Op. 22: IV. Rondo (Allegretto)
track: Piano Sonata No. 12 in A-Flat Major, Op. 26 "Funeral March": III. Marcia funebre sulla morte d'un Eroe

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Piano Sonata No. 9 in E Major, Op. 14 No. 1: III. Rondo (Allegro comodo)
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Piano Sonata No. 11 in B-Flat Major, Op. 22: IV. Rondo (Allegretto)
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Piano Sonata No. 12 in A-Flat Major, Op. 26 "Funeral March": III. Marcia funebre sulla morte d'un Eroe
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track: Piano Sonata No. 29 in B-Flat Major, Op. 106 "Hammerklavier": III. Adagio sostenuto
track: Piano Sonata No. 29 in B-Flat Major, Op. 106 "Hammerklavier": IV. Largo - Allegro risoluto
track: Piano Sonata No. 30 in E Major, Op. 109: I. Vivace, ma non troppo - Adagio espressivo - Tempo I
track: Piano Sonata No. 30 in E Major, Op. 109: II. Prestissimo
track: Piano Sonata No. 31 in A-Flat Major, Op. 110: I. Moderato cantabile molto espressivo
track: Piano Sonata No. 31 in A-Flat Major, Op. 110: II. Allegro molto
track: Piano Sonata No. 31 in A-Flat Major, Op. 110: III. Adagio ma non troppo - Fuga (Allegro ma non troppo)

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date published: 2026-07-08T03:22:41Z

Piano Sonata No. 29 in B-Flat Major, Op. 106 "Hammerklavier": II. Scherzo. Assai vivace
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Piano Sonata No. 29 in B-Flat Major, Op. 106 "Hammerklavier": IV. Largo - Allegro risoluto
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Piano Sonata No. 30 in E Major, Op. 109: I. Vivace, ma non troppo - Adagio espressivo - Tempo I
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Piano Sonata No. 30 in E Major, Op. 109: II. Prestissimo
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Piano Sonata No. 31 in A-Flat Major, Op. 110: I. Moderato cantabile molto espressivo
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Piano Sonata No. 31 in A-Flat Major, Op. 110: II. Allegro molto
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Piano Sonata No. 31 in A-Flat Major, Op. 110: III. Adagio ma non troppo - Fuga (Allegro ma non troppo)
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Beethoven: Piano Sonatas Nos. 20 – 26
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track: Piano Sonata No. 25 in G Major, Op. 79: II. Andante
track: Piano Sonata No. 26 in E-Flat Major, Op. 81a "Les Adieux": II. Abwesenheit. Andante espressivo

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Piano Sonata No. 22 in F Major, Op. 54: II. Allegretto
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Piano Sonata No. 23 in F Minor, Op. 57 "Appassionata": I. Allegro assai
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Piano Sonata No. 23 in F Minor, Op. 57 "Appassionata": III. Allegro ma non troppo
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Piano Sonata No. 24 in F-Sharp Major, Op. 78 "For Therese": I. Adagio cantabile - Allegro ma non troppo
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Piano Sonata No. 24 in F-Sharp Major, Op. 78 "For Therese": II. Allegro vivace
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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: Piano Sonata No. 24 in F-Sharp Major, Op. 78 "For Therese": II. Allegro vivace
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Piano Sonata No. 25 in G Major, Op. 79: II. Andante
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duration ms: 144786
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by artist: Ludwig van Beethoven
by artist: Rudolf Buchbinder
in album: Beethoven: Piano Sonatas Nos. 20 – 26
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  date published: 2021-09-03
genre: classical
genre: classical-piano
genre: chamber-music
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60992de9c25458c8030011bb90cfb1479b1df1772f6a15de735d40d234b4bda9. 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/DEN961404822.
  date published: 2026-07-08T03:22:41Z
audio: Piano Sonata No. 25 in G Major, Op. 79: II. Andante
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Piano Sonata No. 26 in E-Flat Major, Op. 81a "Les Adieux": II. Abwesenheit. Andante espressivo
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duration: PT3M40S
duration ms: 220106
explicit: false
by artist: Ludwig van Beethoven
by artist: Rudolf Buchbinder
in album: Beethoven: Piano Sonatas Nos. 20 – 26
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genre: classical
genre: classical-piano
genre: chamber-music
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additional property: CopyrightID
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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
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  date published: 2026-07-08T03:22:41Z
audio: Piano Sonata No. 26 in E-Flat Major, Op. 81a "Les Adieux": II. Abwesenheit. Andante espressivo
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Beethoven: Piano Sonatas Nos. 13 – 19
type: MusicAlbum
date published: 2021-09-03
track: Piano Sonata No. 13 in E-Flat Major, Op. 27 No. 1 "Quasi una fantasia": IV. Allegro vivace - Tempo I - Presto
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  genre: classical
  genre: classical-piano
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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
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    date published: 2026-07-08T08:56:20Z
  audio: Piano Sonata No. 13 in E-Flat Major, Op. 27 No. 1 "Quasi una fantasia": IV. Allegro vivace - Tempo I - Presto
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track: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
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  genre: classical
  genre: classical-piano
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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: 2026-07-08T03:22:41Z
  audio: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
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track: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": II. Allegretto
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  genre: classical
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  subject of: OpenTimestamps Proof of Existence
  audio: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": II. Allegretto
track: Piano Sonata No. 15 in D Major, Op. 28 "Pastorale": I. Allegro
track: Piano Sonata No. 15 in D Major, Op. 28 "Pastorale": III. Scherzo. Allegro vivace
track: Piano Sonata No. 16 in G Major, Op. 31 No. 1: I. Allegro vivace
track: Piano Sonata No. 16 in G Major, Op. 31 No. 1: III. Rondo (Allegretto)
track: Piano Sonata No. 17 in D Minor, Op. 31 No. 2 "The Tempest": I. Largo - Allegro
track: Piano Sonata No. 18 in E-Flat Major, Op. 31 No. 3 "The Hunt": I. Allegro
track: Piano Sonata No. 18 in E-Flat Major, Op. 31 No. 3 "The Hunt": II. Scherzo (Allegretto vivace)
track: Piano Sonata No. 18 in E-Flat Major, Op. 31 No. 3 "The Hunt": III. Menuetto (Moderato e grazioso)
track: Piano Sonata No. 18 in E-Flat Major, Op. 31 No. 3 "The Hunt": IV. Presto con fuoco

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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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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 0x14dc53ec36f55bc6974dfef25f3cbdda6f95fcc91d97583d7f63b9f872ca6de0. 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/DEN961404712.
date published: 2026-07-08T03:20:19Z

Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": II. Allegretto
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Piano Sonata No. 15 in D Major, Op. 28 "Pastorale": I. Allegro
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by artist: Rudolf Buchbinder
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genre: classical
genre: classical-piano
genre: chamber-music
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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: 2026-07-08T03:53:27Z
audio: Piano Sonata No. 15 in D Major, Op. 28 "Pastorale": I. Allegro
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Piano Sonata No. 15 in D Major, Op. 28 "Pastorale": III. Scherzo. Allegro vivace
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
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Piano Sonata No. 16 in G Major, Op. 31 No. 1: I. Allegro vivace
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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Piano Sonata No. 16 in G Major, Op. 31 No. 1: III. Rondo (Allegretto)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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Piano Sonata No. 17 in D Minor, Op. 31 No. 2 "The Tempest": I. Largo - Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Piano Sonata No. 17 in D Minor, Op. 31 No. 2 "The Tempest": I. Largo - Allegro
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Piano Sonata No. 18 in E-Flat Major, Op. 31 No. 3 "The Hunt": I. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
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Piano Sonata No. 18 in E-Flat Major, Op. 31 No. 3 "The Hunt": II. Scherzo (Allegretto vivace)
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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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Piano Sonata No. 18 in E-Flat Major, Op. 31 No. 3 "The Hunt": III. Menuetto (Moderato e grazioso)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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track: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: IV. Prestissimo
track: Piano Sonata No. 2 in A Major, Op. 2 No. 2: III. Scherzo (Allegretto)
track: Piano Sonata No. 3 in C Major, Op. 2 No. 3: III. Scherzo (Allegro)
track: Piano Sonata No. 4 in E-Flat Major, Op. 7 "Grand Sonata": II. Largo, con gran espressione
track: Piano Sonata No. 4 in E-Flat Major, Op. 7 "Grand Sonata": III. Allegro - Trio
track: Piano Sonata No. 5 in C Minor, Op. 10 No. 1: II. Adagio molto
track: Piano Sonata No. 5 in C Minor, Op. 10 No. 1: III. Finale (Prestissimo)

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audio: Piano Sonata No. 3 in C Major, Op. 2 No. 3: III. Scherzo (Allegro)
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Piano Sonata No. 4 in E-Flat Major, Op. 7 "Grand Sonata": II. Largo, con gran espressione
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Piano Sonata No. 4 in E-Flat Major, Op. 7 "Grand Sonata": III. Allegro - Trio
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Piano Sonata No. 5 in C Minor, Op. 10 No. 1: II. Adagio molto
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  date published: 2026-07-08T03:53:27Z
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Piano Sonata No. 5 in C Minor, Op. 10 No. 1: III. Finale (Prestissimo)
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Beethoven: Piano Concerto No. 5, Op. 73 "Emperor"
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Beethoven: Piano Concerto No. 3 in C Minor, Op. 37
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  subject of: OpenTimestamps Proof of Existence
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  subject of: OpenTimestamps Proof of Existence
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OTSVerificationAPI
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-02T03:55:08Z

Piano Concerto No. 21 in C Major, K. 467: II. Andante
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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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    date published: 2026-06-13T15:41:10Z
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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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track: Piano Sonata No. 1 in F Minor, Op. 2, No. 1: I. Allegro
track: Piano Sonata No. 1 in F Minor, Op. 2, No. 1: IV. Prestissimo
track: Piano Sonata No. 32 in C Minor, Op. 111: I. Maestoso

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OpenTimestamps Proof of Existence
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T16:51:38Z
audio: Piano Sonata No. 1 in F Minor, Op. 2, No. 1: I. Allegro
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  additional property: Mode Name
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Piano Sonata No. 1 in F Minor, Op. 2, No. 1: IV. Prestissimo
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duration: PT4M56S
duration ms: 296920
explicit: false
by artist: Ludwig van Beethoven
by artist: Rudolf Buchbinder
in album: Beethoven: Mondscheinsonate
  type: MusicAlbum
  date published: 2014-11-14
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: ATB151100076
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/ATB151100076
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4347342b1c92bd806bd48d064cb157d7bb86e1c3bfa202dbf3785212da9e2be1. 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/ATB151100076.
  date published: 2026-07-08T03:20:19Z
audio: Piano Sonata No. 1 in F Minor, Op. 2, No. 1: IV. Prestissimo
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Piano Sonata No. 32 in C Minor, Op. 111: I. Maestoso
type: MusicRecording
duration: PT9M20S
duration ms: 560666
explicit: false
by artist: Ludwig van Beethoven
by artist: Rudolf Buchbinder
in album: Beethoven: Mondscheinsonate
  type: MusicAlbum
  date published: 2014-11-14
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: ATB151100204
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/ATB151100204
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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320d35649fe50211ec73f4658ae4d683f640578839a660a0ca4c447be9cbfad0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ATB151100204.
  date published: 2026-07-06T07:53:57Z
audio: Piano Sonata No. 32 in C Minor, Op. 111: I. Maestoso
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Mozart: Piano Concertos
type: MusicAlbum
date published: 2014-10-07

Beethoven: Piano Concertos Nos. 3 & 5
type: MusicAlbum
date published: 2014-10-03

Trio Recital 1973
type: MusicAlbum
date published: 2014-04-01

Beethoven: The Piano Concertos
type: MusicAlbum
date published: 2013-10-21
track: I. Allegro con brio
  type: MusicRecording
  duration: PT16M14S
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  explicit: false
  by artist: Ludwig van Beethoven
  by artist: Rudolf Buchbinder
  by artist: Wiener Philharmoniker
  in album: Beethoven: The Piano Concertos
    type: MusicAlbum
    date published: 2013-10-21
  genre: classical
  genre: classical-piano
  genre: chamber-music
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  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11304015
  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 0x9f7e1952b29ad16cb15b6eb698d1ed62fd0a42e120a1c9f37979bdb1b05e41c8. 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/USSM11304015.
    date published: 2026-07-08T03:53:27Z
  audio: I. Allegro con brio
    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
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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
      type: PropertyValue
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track: I. Allegro con brio
  type: MusicRecording
  duration: PT16M48S
  duration ms: 1008186
  explicit: false
  by artist: Ludwig van Beethoven
  by artist: Rudolf Buchbinder
  by artist: Wiener Philharmoniker
  in album: Beethoven: The Piano Concertos
    type: MusicAlbum
    date published: 2013-10-21
  genre: classical
  genre: classical-piano
  genre: chamber-music
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  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: OTSVerificationAPI
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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
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7ad61e68941c97eb3d148335ffeba0f7716ec5cc2c41fcbdb9614b08aa98f1. 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/USSM11304023.
    date published: 2026-07-08T03:22:41Z
  audio: I. Allegro con brio
    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
      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
      type: PropertyValue
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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: I. Allegro
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  duration: PT20M2S
  duration ms: 1202493
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  by artist: Ludwig van Beethoven
  by artist: Rudolf Buchbinder
  by artist: Wiener Philharmoniker
  in album: Beethoven: The Piano Concertos
    type: MusicAlbum
    date published: 2013-10-21
  genre: classical
  genre: classical-piano
  genre: chamber-music
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: I. Allegro
track: II. Largo
track: III. Rondo. Molto allegro

CopyrightRegisteredAt
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CopyrightChainExplorerURL
type: PropertyValue
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OTSHash
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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/USSM11304031

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 0xc290f47d7580d76c79ea5e9312674bc00438be3ebbc67a79344b9fa7274217b1. 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/USSM11304031.
date published: 2026-07-08T03:53:27Z

I. Allegro
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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additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.381
additional property: Energy
  type: PropertyValue
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additional property: Speechiness
  type: PropertyValue
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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: 0.134
additional property: Loudness (dB)
  type: PropertyValue
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additional property: Key Name
  type: PropertyValue
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additional property: Mode Name
  type: PropertyValue
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II. Largo
type: MusicRecording
duration: PT9M6S
duration ms: 546440
explicit: false
by artist: Ludwig van Beethoven
by artist: Rudolf Buchbinder
by artist: Wiener Philharmoniker
in album: Beethoven: The Piano Concertos
  type: MusicAlbum
  date published: 2013-10-21
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: USSM11304024
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
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additional property: OTSVerificationAPI
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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
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d49999eb03314f6d9a72a3f68aab5aff445ef196385a547f495eab28ed5c0da. 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/USSM11304024.
  date published: 2026-07-08T03:22:41Z
audio: II. Largo
  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: 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)
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  additional property: Mode Name
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I. Allegro con brio
type: MusicRecording
duration: PT14M5S
duration ms: 845826
explicit: false
by artist: Ludwig van Beethoven
by artist: Rudolf Buchbinder
by artist: Wiener Philharmoniker
in album: Beethoven: The Piano Concertos
  type: MusicAlbum
  date published: 2013-10-21
genre: classical
genre: classical-piano
genre: chamber-music
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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: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6565820e3accce5f0a641917e7109aeab13f8efcc9cbc612f73ab15aeee394a4. 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/USSM11304019.
  date published: 2026-07-08T08:56:20Z
audio: I. Allegro con brio
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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    date published: 2026-07-07T13:25:45Z
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track: Piano Sonata in B-Flat Major, D. 960, Op. posth.: III. Scherzo - Allegro vivace von delicatezza

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    date published: 2026-07-08T03:20:19Z
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    date published: 2026-07-08T03:20:19Z
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T08:56:20Z

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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
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  date published: 2026-07-08T03:39:04Z
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    date published: 2026-07-08T03:53:27Z
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Die schöne Müllerin
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Great Performances At The Ludwig Van Beethoven Easter Festival: Beethoven Piano Concertos Nos. 3 & 4
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Haydn Edition Volume 3 - Piano Sonatas [Complete]
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Mozart: Piano Concertos Nos. 9 and 19
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Piano Sonata No. 1 in F Minor, Op. 2 No. 1: III. Menuetto. Allegretto
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