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description: Joseph Joachim (28 June 1831 – 15 August 1907) was a Hungarian violinist, conductor, composer and teacher who made an international career, based in Hanover and Berlin. A close collaborator of Johanne
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  track: Symphony No. 2 in D Major, Op. 73: I. Allegro non troppo - 1988 Recording
  track: Symphony No. 3 in F Major, Op. 90: I. Allegro con brio
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album: Zen Violin
album: Przeboje Salonu Muzycznego
album: The Heart Of The Violin Concerto
album: Mozart 111 Vol. 1
album: Mozart: The Violin Concertos; Sinfonia Concertante
album: GAIA Music Festival 2010: Music of Atterberg, Bruch, Schumann & Weiner (Live)
album: Karajan A-Z: Mozart
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album: The Originals - Legendary Recordings From The Deutsche Grammophon Catalogue
album: 5 Decades of Treasured Performances: Camilla Wicks (Live)
album: ASM35 - The Complete Musician
album: Johannes Brahms: The 21 Hungarian Dances (arr. for violin and piano by Joseph Joachim)
album: It's Me - The Baroque & Romantic Albums
album: Classical Music Capitals of the World: Budapest
album: Heifetz: Encores, Vol. 1 (1946-1956)
album: The Romantic Violinist - A Celebration of Joseph Joachim
album: Germany Rhine Magic
album: Brahms & Joachim: Violin Concertos
album: Ross / Debussy / Bach / Paganini: Dances and Romances for Violin
album: Brahms: Violin Concerto; Double Concerto
album: Karajan A-Z: Brahms - Bruch
album: Karajan 1980s (Pt. 2)
album: Joseph Joachim: Two Fantasies Rediscovered
album: Brahms: Violin Concerto in D Major & 21 Hungarian Dances
album: Joachim, J.: Violin Concerto, Op. 11, "In the Hungarian Style" / Violin Concerto in G Minor, Op. 3
album: Brahms/Joachim: Hungarian Dances – Joachim: Variations
album: Joachim: Overtures
album: Brahms / Joachim: Hungarian Dances
album: Joachim: Violin Concerto No. 3 / Overture 'In Memoriam Heinrich Von Kleist'
album: Joachim: Violin Concerto No. 3 / Overtures, Opp. 4 and 13
album: Beethoven: Violin Concerto
album: Schmid, Benjamin: Concert Pieces
album: DG 120 – Concertos 2 (1994-2016)
album: Mozart: Violin Concertos Nos. 3 & 5
album: Mozart: Violin Concerto Nos.3 K.216 & 5 K.219
album: Brahms: Violin Concerto In D Major, Op. 77 / Schumann: Fantasy For Violin And Orchestra In C Major, Op. 131
album: Brahms: Violin Concerto; Hungarian Dances; Bartók: Rhapsodies
album: Simply Anne-Sophie
album: The History Of Classical Music - Part 3 - From Berlioz To Tchaikovsky
album: Mendelssohn / Brahms: Violin Concertos
album: Brahms & Joachim: Chamber Works
album: Beethoven: Violin Concerto; Violin Romances Nos.1 & 2
album: Brahms: The 4 Symphonies & Haydn Variations & Piano Concertos
album: Brahms: Violin concerto, op. 77 / Beethoven: Triple concerto, op.56
album: Leonid Kogan. Grand Collection. Vol. 6–10
album: クラリネット再発見
album: Mozart: Violin Concertos Nos.3-5
album: Beethoven: Violin Concerto; Mendelssohn: Violin Concerto
album: Zigeunerweisen: Virtuoso Violin
album: Violin Recital: Accardo, Salvatore
album: Schubert: Symphony No. 4 / Symphony in C Major

Notturno for Violin and Orchestra, Op. 12
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21 Hungarian Dances, WoO 1 (Arr. for Violin & Piano): No. 1 in G Minor
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21 Hungarian Dances, WoO 1 (Arr. for Violin & Piano): No. 3 in F Major
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21 Hungarian Dances, WoO 1 (Arr. for Violin & Piano): No. 5 in G Minor (original in F-Sharp Minor)
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21 Hungarian Dances, WoO 1 (Arr. for Violin & Piano): No. 7 in A Major
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21 Hungarian Dances, WoO 1 (Arr. for Violin & Piano): No. 10 in G Major (original in E Major)
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Violin Concerto No. 5 in A Major, K. 219 "Turkish": III. Rondeau. Tempo di Menuetto (Cadenza Joseph Joachim)
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Violin Concerto No. 5 in A Major, K. 219 "Turkish": I. Allegro aperto
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Violin Concerto in D Major, Op. 77: I. Allegro non troppo (Cadenza by Joseph Joachim) - Live
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additional property: OTSVerifyInstructions
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audio: Violin Concerto in D Major, Op. 77: I. Allegro non troppo (Cadenza by Joseph Joachim) - Live
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Symphony No. 1 in C Minor, Op. 68: II. Andante sostenuto
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by artist: Berliner Philharmoniker
by artist: Claudio Abbado
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subject of: OpenTimestamps Proof of Existence
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audio: Symphony No. 1 in C Minor, Op. 68: II. Andante sostenuto
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Symphony No. 2 in D Major, Op. 73: I. Allegro non troppo - 1988 Recording
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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. 2 in D Major, Op. 73: I. Allegro non troppo - 1988 Recording
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Symphony No. 3 in F Major, Op. 90: I. Allegro con brio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Symphony No. 3 in F Major, Op. 90: I. Allegro con brio
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Symphony No. 4 in E Minor, Op. 98: I. Allegro non troppo
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by artist: Berliner Philharmoniker
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genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Symphony No. 4 in E Minor, Op. 98: I. Allegro non troppo
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Zen Violin
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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: Bach, JS: Violin Concerto No. 1 in A Minor, BWV 1041: 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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Mozart: Violin Concerto No. 3 in G Major, K. 216: II. Adagio
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Beethoven: Violin Concerto in D Major, Op. 61: II. Larghetto
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The Heart Of The Violin Concerto
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Mozart 111 Vol. 1
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Mozart: The Violin Concertos; Sinfonia Concertante
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Violin Concerto No. 2 in D Major, K. 211: III. Rondeau (Allegro)
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Violin Concerto No. 4 in D Major, K. 218: III. Rondeau (Andante grazioso - Allegro ma non troppo)
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Violin Concerto No. 3 in G Major, K. 216: I. Allegro
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Violin Concerto No. 1 in B-Flat Major, K. 207: III. Presto
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Violin Concerto No. 3 in G Major, K. 216: III. Rondo (Allegro)
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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 0xa843a19f4c4d71e7c45a15a88fede16c5be497b62935fd976d3a609090c5e4ff. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960500091.
  date published: 2026-07-06T06:56:49Z
audio: Violin Concerto No. 5 in A Major, K. 219: I. Allegro aperto
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  additional property: Valence (Positivity)
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GAIA Music Festival 2010: Music of Atterberg, Bruch, Schumann & Weiner (Live)
type: MusicAlbum
date published: 2016-01-22

Karajan A-Z: Mozart
type: MusicAlbum
date published: 2024-07-12
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  by artist: Orchestra Sinfonica della RAI de Torino
  by artist: Herbert von Karajan
  by artist: Orchestra Sinfonica Di Torino Della Rai
  in album: Karajan A-Z: Mozart
    type: MusicAlbum
    date published: 2024-07-12
  popularity: 12
  genre: classical
  genre: classical-era
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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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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b76522c2ce178cc6f6aa7b7e863dac8c9991bf6fc774e125ac9cb914ad91cc. 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/DEF054202041.
    date published: 2026-07-08T03:22:41Z
  audio: Symphony No. 35 in D Major, K. 385 "Haffner": I. Allegro con spirito
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Mode (Major/Minor)
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  type: MusicRecording
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  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Orchestra Sinfonica della RAI de Torino
  by artist: Herbert von Karajan
  by artist: Orchestra Sinfonica Di Torino Della Rai
  in album: Karajan A-Z: Mozart
    type: MusicAlbum
    date published: 2024-07-12
  popularity: 10
  genre: classical
  genre: classical-era
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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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 0xd04ebfe5f4b8e1b98dc59149dad4da73ddfba2d233f6c12a16967a8120f3a260. 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/DEF054202051.
    date published: 2026-07-08T03:22:41Z
  audio: Symphony No. 40 in G Minor, K. 550 (1st Version, No Clarinets): I. Molto allegro
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    additional property: Danceability
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    additional property: Speechiness
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    additional property: Valence (Positivity)
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track: Symphony No. 40 in G Minor, K. 550 (1st Version, No Clarinets): II. Andante
  type: MusicRecording
  duration: PT8M2S
  duration ms: 482200
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Orchestra Sinfonica della RAI de Torino
  by artist: Herbert von Karajan
  by artist: Orchestra Sinfonica Di Torino Della Rai
  in album: Karajan A-Z: Mozart
    type: MusicAlbum
    date published: 2024-07-12
  popularity: 8
  genre: classical
  genre: classical-era
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  additional property: CopyrightID
  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
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track: Symphony No. 29 in A Major, K. 201: I. Allegro moderato
track: Symphony No. 29 in A Major, K. 201: II. Andante
track: Symphony No. 32 in G Major, K. 318: III. Tempo I

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CopyrightRegisteredAt
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CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0x4fd0373d25a020491e11b87b729f94c32e1762ddfb67023f030d434120c1323b

OTSHash
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OTSBitcoinBlock
type: PropertyValue
value: 957118

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957118

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF054202052

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:20:19Z

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 0x4fd0373d25a020491e11b87b729f94c32e1762ddfb67023f030d434120c1323b. 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/DEF054202052.
date published: 2026-07-08T03:20:19Z

Symphony No. 40 in G Minor, K. 550 (1st Version, No Clarinets): II. Andante
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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Symphony No. 29 in A Major, K. 201: I. Allegro moderato
type: MusicRecording
duration: PT7M5S
duration ms: 425333
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: Karajan A-Z: Mozart
  type: MusicAlbum
  date published: 2024-07-12
popularity: 7
genre: classical
genre: classical-era
isrc code: DEF056500841
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
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8522e84ce702f62f2893197666045115901e571649d782570c872ce06260bc7d. 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/DEF056500841.
  date published: 2026-07-08T03:20:19Z
audio: Symphony No. 29 in A Major, K. 201: I. Allegro moderato
  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: 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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  additional property: Key Name
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duration: PT5M58S
duration ms: 358600
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: Karajan A-Z: Mozart
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  date published: 2024-07-12
popularity: 6
genre: classical
genre: classical-era
isrc code: DEF056500842
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: 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7292999b6d9c0d6f50863076291214bd86e7e24703d429a63aab1f953f5ec8cc. 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/DEF056500842.
  date published: 2026-07-08T03:22:41Z
audio: Symphony No. 29 in A Major, K. 201: II. Andante
  type: AudioObject
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  additional property: Mode (Major/Minor)
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  additional property: Energy
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  additional property: Valence (Positivity)
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duration: PT2M4S
duration ms: 124363
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: Karajan A-Z: Mozart
  type: MusicAlbum
  date published: 2024-07-12
popularity: 14
genre: classical
genre: classical-era
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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
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbbf9998f8aee32675a2da43fca976563ad89eb0ab2899c161431196885fd34. 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/DEF057701273.
  date published: 2026-07-08T03:22:41Z
audio: Symphony No. 32 in G Major, K. 318: III. Tempo I
  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
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track: Romance in G Major, Op. 40
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Por una cabeza
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Romance in G Major, Op. 40
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Navarra, Op. 33
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The Originals - Legendary Recordings From The Deutsche Grammophon Catalogue
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5 Decades of Treasured Performances: Camilla Wicks (Live)
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ASM35 - The Complete Musician
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Johannes Brahms: The 21 Hungarian Dances (arr. for violin and piano by Joseph Joachim)
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It's Me - The Baroque & Romantic Albums
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track: Andromeda Liberata (Serenata Veneziana), RV 117: Aria 13: Sovvente il sole

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Germany Rhine Magic
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track: Double Concerto in A Minor, Op. 102: I. Allegro
track: Double Concerto in A Minor, Op. 102: II. Andante
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Double Concerto in A Minor, Op. 102: III. Vivace non troppo
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Karajan A-Z: Brahms - Bruch
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Karajan 1980s (Pt. 2)
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Joseph Joachim: Two Fantasies Rediscovered
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Joachim: Overtures
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Joachim: Violin Concerto No. 3 / Overtures, Opp. 4 and 13
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Schmid, Benjamin: Concert Pieces
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track: 6 Morceaux, Op. 51 (arr. for violin and piano): 6 morceaux, Op. 51: No. 6. Valse sentimentale in F Minor (arr. for violin and piano)

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6 Morceaux, Op. 51 (arr. for violin and piano): 6 morceaux, Op. 51: No. 6. Valse sentimentale in F Minor (arr. for violin and piano)
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Violin Concerto No. 5 in A Major, K. 219 "Turkish": III. Rondeau. Tempo di menuetto
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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: 2026-07-07T16:07:00Z
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    additional property: Valence (Positivity)
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track: Violin Concerto in D, Op. 77: 3. Allegro giocoso, ma non troppo vivace - Poco più presto
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  by artist: Leonidas Kavakos
  by artist: Gewandhausorchester
  by artist: Riccardo Chailly
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    type: MusicAlbum
    date published: 2013-01-01
  genre: classical
  genre: german-romanticism
  genre: late-romantic-era
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  additional property: CopyrightID
  additional property: CopyrightStatus
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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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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd256fc6de85c69018c76d5f8696a58deca231ee42823ca604fbbdf97eea649f. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/GBF071301673.
    date published: 2026-07-07T14:18:56Z
  audio: Violin Concerto in D, Op. 77: 3. Allegro giocoso, ma non troppo vivace - Poco più presto
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track: Rhapsody No. 1 for Violin and Piano, BB 94a (Sz.87): 1. Moderato (Lassú)
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  by artist: Leonidas Kavakos
  by artist: Peter Nagy
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  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Rhapsody No. 1 for Violin and Piano, BB 94a (Sz.87): 1. Moderato (Lassú)
track: Rhapsody No. 1 for Violin and Piano, BB 94a (Sz.87): 2. Allegretto moderato (Friss)
track: Hungarian Dance No. 1 In G Minor
track: Hungarian Dance No. 11 In D Minor

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OTSBitcoinBlock
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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 0x6a23126264a95697124a817959a578a379faf35e81b2bba6194a99fc7f38ad65. 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/GBF071301681.
date published: 2026-07-08T03:53:27Z

Rhapsody No. 1 for Violin and Piano, BB 94a (Sz.87): 1. Moderato (Lassú)
type: AudioObject
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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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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Rhapsody No. 1 for Violin and Piano, BB 94a (Sz.87): 2. Allegretto moderato (Friss)
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duration: PT5M12S
duration ms: 312786
explicit: false
by artist: Béla Bartók
by artist: Leonidas Kavakos
by artist: Peter Nagy
in album: Brahms: Violin Concerto; Hungarian Dances; Bartók: Rhapsodies
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  date published: 2013-01-01
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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
audio: Rhapsody No. 1 for Violin and Piano, BB 94a (Sz.87): 2. Allegretto moderato (Friss)
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Hungarian Dance No. 1 In G Minor
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duration: PT3M11S
duration ms: 191880
explicit: false
by artist: Johannes Brahms
by artist: Leonidas Kavakos
by artist: Peter Nagy
in album: Brahms: Violin Concerto; Hungarian Dances; Bartók: Rhapsodies
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genre: classical
genre: german-romanticism
genre: late-romantic-era
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightChainExplorerURL
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Hungarian Dance No. 1 In G Minor
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Hungarian Dance No. 11 In D Minor
type: MusicRecording
duration: PT3M19S
duration ms: 199440
explicit: false
by artist: Johannes Brahms
by artist: Leonidas Kavakos
by artist: Peter Nagy
in album: Brahms: Violin Concerto; Hungarian Dances; Bartók: Rhapsodies
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genre: classical
genre: german-romanticism
genre: late-romantic-era
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightChainExplorerURL
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Hungarian Dance No. 11 In D Minor
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  additional property: Mode (Major/Minor)
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Simply Anne-Sophie
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  by artist: Wiener Philharmoniker
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  additional property: OTSVerificationAPI
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T11:38:34Z
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-02T03:55:08Z
  audio: Clarinet Sonata No. 2 in E-Flat Major, Op. 120 No. 2 (Version for Viola & Piano): III. Andante con moto
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Beethoven: Violin Concerto; Violin Romances Nos.1 & 2
type: MusicAlbum
date published: 1986-01-01
track: Violin Concerto in D Major, Op. 61: 3. Rondo. Allegro
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  by artist: Joseph Joachim
  by artist: Henryk Szeryng
  by artist: Royal Concertgebouw Orchestra
  by artist: Bernard Haitink
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    date published: 1986-01-01
  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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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T03:20:19Z
  audio: Violin Concerto in D Major, Op. 61: 3. Rondo. Allegro
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    additional property: Valence (Positivity)
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track: Violin Romance No. 2 in F Major, Op. 50
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  by artist: Royal Concertgebouw Orchestra
  by artist: Bernard Haitink
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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
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9935ae87bf32ffa70b2fb98324e8cbf53d427c2d1203d151efdd21b95dc19e23. 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/NLA507000210.
    date published: 2026-07-08T03:22:41Z
  audio: Violin Romance No. 2 in F Major, Op. 50
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    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: Energy
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    additional property: Speechiness
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    additional property: Valence (Positivity)
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Brahms: The 4 Symphonies & Haydn Variations & Piano Concertos
type: MusicAlbum
date published: 2004
track: Symphony No. 3 in F Major, Op. 90: III. Poco allegretto
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  by artist: Sir Colin Davis
  by artist: Bavarian Radio Symphony Orchestra
  in album: Brahms: The 4 Symphonies & Haydn Variations & Piano Concertos
    type: MusicAlbum
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  genre: classical
  genre: german-romanticism
  genre: late-romantic-era
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  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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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 0x9e0e106c5d298deb1fa091536296052670d41a3803db148962e26d3f6231e12a. 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/USBC18800148.
    date published: 2026-07-02T03:55:08Z
  audio: Symphony No. 3 in F Major, Op. 90: III. Poco allegretto
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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: Acousticness
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    additional property: Valence (Positivity)
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track: Variations on a Theme by Haydn, Op. 56a: Variation I - Poco più animato
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  by artist: Johannes Brahms
  by artist: Sir Colin Davis
  by artist: Bavarian Radio Symphony Orchestra
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    type: MusicAlbum
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  genre: classical
  genre: german-romanticism
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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: 2026-07-08T03:20:19Z
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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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  by artist: Bavarian Radio Symphony Orchestra
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  genre: classical
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  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
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OTSHash
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC18900164

OTSTimestamp
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value: 2026-07-08T03:20:19Z

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 0x12e79d76c8159ee2fc7a382b7b1b8710a169a551b85c86be303771ae7edf36ac. 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/USBC18900164.
date published: 2026-07-08T03:20:19Z

Variations on a Theme by Haydn, Op. 56a: Variation V - Vivace
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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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Variations on a Theme by Haydn, Op. 56a: Variation VIII - Presto non troppo
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duration: PT1M12S
duration ms: 72213
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by artist: Johannes Brahms
by artist: Sir Colin Davis
by artist: Bavarian Radio Symphony Orchestra
in album: Brahms: The 4 Symphonies & Haydn Variations & Piano Concertos
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genre: classical
genre: german-romanticism
genre: late-romantic-era
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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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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-08T03:22:41Z
audio: Variations on a Theme by Haydn, Op. 56a: Variation VIII - Presto non troppo
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Zigeunerweisen: Virtuoso Violin
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Violin Recital: Accardo, Salvatore
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Schubert: Symphony No. 4 / Symphony in C Major
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    date published: 2026-07-08T03:53:27Z
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