Hans Sitt
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genre: czech-classical
description: Hans Sitt (born Jan Hanuš Sitt on 21 September 1850, Prague – 10 March 1922, Leipzig), was a Bohemian violinist, violist, teacher, and composer. During his lifetime, he was regarded as one of the fore
popularity: 9
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album: Scandinavian Festival
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  date published: 1989-05-12
album: Sitt Op. 32 (Estudios de 1-20)
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  date published: 2024-06-24
  track: Étude I
  track: Étude III
  track: Étude II
album: Hans Sitt: Viola and Piano Works
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  track: Albumblätter, Op. 39: No. 2, Andante sostenuto
  track: Albumblätter, Op. 39: No. 1, Moderato
album: Sitt: Works for Viola & Piano
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album: Hans Sitt: Phantasiestüke und Albumblätter [Bratsche und Klavier (Viola Repertoire)]
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  date published: 2022-09-22
album: Sitt: Albumblätter, Op. 39: No. 2, Andante Sostenuto
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album: Short Stories - A Collection of Romantic Violin Pieces
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  date published: 2006-06-11
album: Norwegian Classical Favourites
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  track: Peer Gynt-Suite Nr. 1, Op. 46: IV. In the Hall of the Mountain King
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  track: Fantasy Pieces, Op. 45: Summer Song
  track: Maria Stuart i Skotland (arr. J. Halvorsen): Valse Caprice
  track: Forest Clearing, Op. 15
  track: Norwegian Dances, Op. 35: No. 2 in A Major
album: Student Violin Concertos: Conciertos para Violín y Piano
album: Mozart: The Violin Concertos; Sinfonia Concertante
album: Am Brunnen vor dem Tore
album: Grieg : The Best Of Grieg
album: AMEB Violin Series 9 Sixth Grade
album: The Best Classical Music of All Time
album: Romance Oubliée
album: Rainforest Rhapsody
album: Grieg: Complete Orchestral Works
album: 50 Best - Grieg
album: AMEB Violin Series 8 Grade 3
album: AMEB Violin Series 9 Fourth Grade
album: Violin Concertos for Children, Vol. 3
album: Pièces de concours
album: Grieg: Orchestral Music, Vol. 2 - Orchestrated Piano Pieces
album: Grieg: Peer Gynt Suites Nos. 1 and 2
album: Grieg, E.: From Holberg's Time / Sibelius, J.: Karelia Suite / Finlandia / Valse Triste / Suite Champetre
album: Music of Reinecke, Sitt, & Kalliwoda
album: Grieg (The Best Of)
album: Bijoux
album: Ambiance
album: Brahms / Reinecke / Herzogenberg / Kiel / Fuchs / Sitt: Viola Works
album: Impressions

Étude I
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audio: Étude I
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Étude III
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Étude II
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Albumblätter, Op. 39: No. 2, Andante sostenuto
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additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:39:04Z
audio: Albumblätter, Op. 39: No. 2, Andante sostenuto
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Albumblätter, Op. 39: No. 1, Moderato
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duration: PT2M43S
duration ms: 163653
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by artist: Hans Sitt
by artist: Alicia Calabuig
by artist: Jorge Blasco
in album: Hans Sitt: Viola and Piano Works
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genre: czech-classical
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T04:30:37Z
audio: Albumblätter, Op. 39: No. 1, Moderato
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Norwegian Dances, Op. 35: No. 2 in A Major
type: MusicRecording
duration: PT2M27S
duration ms: 147680
explicit: false
by artist: Edvard Grieg
by artist: Hans Sitt
by artist: Iceland Symphony Orchestra
by artist: Bjarte Engeset
in album: Norwegian Classical Favourites
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genre: classical
genre: late-romantic-era
genre: norwegian-classical
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1fd4deb960bcf9982a4119720785c0acda10355dff8105bbdc1c81e71cd11a. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/HKI190236015.
  date published: 2026-07-29T13:09:35Z
audio: Norwegian Dances, Op. 35: No. 2 in A Major
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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Sitt: Violin concertino Op. 70 in A Minor: III. Allegretto
type: MusicRecording
duration: PT4M21S
duration ms: 261902
explicit: false
by artist: Hans Sitt
by artist: Maria Antònia Pons-Estel Tugores
by artist: Valentin Moldovan
in album: Student Violin Concertos: Conciertos para Violín y Piano
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genre: czech-classical
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Sitt: Violin concertino Op. 70 in A Minor: III. Allegretto
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Sitt: Violin concertino Op. 70 in A Minor: I. Allegro
type: MusicRecording
duration: PT5M24S
duration ms: 324966
explicit: false
by artist: Hans Sitt
by artist: Maria Antònia Pons-Estel Tugores
by artist: Valentin Moldovan
in album: Student Violin Concertos: Conciertos para Violín y Piano
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  date published: 2019-03-11
genre: czech-classical
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  date published: 2026-07-31T04:14:58Z
audio: Sitt: Violin concertino Op. 70 in A Minor: I. Allegro
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additional property: OTSVerifyInstructions
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Violin Concerto No. 1 in B-Flat Major, K. 207: III. Presto
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duration: PT5M42S
duration ms: 342906
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Hans Sitt
by artist: Anne-Sophie Mutter
by artist: London Philharmonic Orchestra
in album: Mozart: The Violin Concertos; Sinfonia Concertante
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genre: classical
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
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additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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  date published: 2026-07-07T18:39:05Z
audio: Violin Concerto No. 1 in B-Flat Major, K. 207: III. Presto
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Violin Concerto No. 1 in B-Flat Major, K. 207: I. Allegro moderato
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duration: PT6M48S
duration ms: 408426
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Hans Sitt
by artist: Anne-Sophie Mutter
by artist: London Philharmonic Orchestra
in album: Mozart: The Violin Concertos; Sinfonia Concertante
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  date published: 2005-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
audio: Violin Concerto No. 1 in B-Flat Major, K. 207: I. Allegro moderato
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Violin Concerto No. 1 in B-Flat Major, K. 207: II. Adagio
type: MusicRecording
duration: PT7M58S
duration ms: 478293
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Hans Sitt
by artist: Anne-Sophie Mutter
by artist: London Philharmonic Orchestra
in album: Mozart: The Violin Concertos; Sinfonia Concertante
  type: MusicAlbum
  date published: 2005-01-01
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a7ceb3aecd08c1b2df1a18943b97ac5a8b0735295df2729563a2ba5154bde9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960500082.
  date published: 2026-07-29T19:35:34Z
audio: Violin Concerto No. 1 in B-Flat Major, K. 207: II. Adagio
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isrc code: DEN960500082
additional property: CopyrightID
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additional property: OTSBitcoinBlockVerifyURL
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Heidenroslein (Rose on the Heath) (arr. H. Sitt)
type: MusicRecording
duration: PT3M1S
duration ms: 181000
explicit: false
by artist: Hans Sitt
by artist: Heinrich Werner
by artist: Carl Maria von Weber Men's Choir, Berlin
by artist: Andreas Wiedermann
in album: Am Brunnen vor dem Tore
  type: MusicAlbum
  date published: 2010-08-01
popularity: 3
genre: czech-classical
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5605f7928c39c49ab858c39c621ed8529f370aca13deb47d4fdeb008ccd7256. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1010869.
  date published: 2026-07-30T06:39:12Z
audio: Heidenroslein (Rose on the Heath) (arr. H. Sitt)
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additional property: CopyrightID
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additional property: OTSBitcoinBlockVerifyURL
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Norwegian Dances, Op. 35: No. 2 in A Major (arr. for orchestra)
type: MusicRecording
duration: PT2M24S
duration ms: 144000
explicit: false
by artist: Edvard Grieg
by artist: Hans Sitt
by artist: Richard Edlinger
in album: Grieg : The Best Of Grieg
  type: MusicAlbum
  date published: 1992-10-20
genre: classical
genre: late-romantic-era
genre: norwegian-classical
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf322a8b06b2d3907bda5cd99996c01a619e3e3d78a65c1813511db7b299fef4b. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/HKI199247603.
  date published: 2026-07-30T18:23:33Z
audio: Norwegian Dances, Op. 35: No. 2 in A Major (arr. for orchestra)
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Time Signature
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  additional property: Danceability
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additional property: OTSBitcoinBlockVerifyURL
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

100 Etüden, Op. 32: No. 88, Andante
type: MusicRecording
duration: PT2M47S
duration ms: 167786
explicit: false
by artist: Hans Sitt
by artist: Marina Marsden
by artist: Clemens Leske
in album: AMEB Violin Series 9 Sixth Grade
  type: MusicAlbum
  date published: 2012
genre: czech-classical
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25f8b2b254304196b612fff07d41a207e147eff2bdb864ebd38785e0b0ff5db. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/AUFFF1200075.
  date published: 2026-07-31T22:27:44Z
audio: 100 Etüden, Op. 32: No. 88, Andante
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  additional property: Danceability
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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isrc code: AUFFF1200075
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Albumblätter, Op. 39: I. Moderato
type: MusicRecording
duration: PT2M48S
duration ms: 168853
explicit: false
by artist: Hans Sitt
by artist: Thomas Hoppe
by artist: Tabea Zimmermann
in album: Romance Oubliée
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  date published: 2015-03-10
genre: czech-classical
isrc code: DELN21403001
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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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  value: 2026-07-08T03:20:19+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25833bf6e57dbab8e0ec834667780c7465d889e781b150b87c93efe808e962a. 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/DELN21403001.
  date published: 2026-07-08T03:22:41Z
audio: Albumblätter, Op. 39: I. Moderato
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  additional property: Tempo (BPM)
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Albumblätter, Op. 39: II. Andante sostenuto
type: MusicRecording
duration: PT4M10S
duration ms: 250080
explicit: false
by artist: Hans Sitt
by artist: Tabea Zimmermann
by artist: Thomas Hoppe
in album: Romance Oubliée
  type: MusicAlbum
  date published: 2015-03-10
genre: czech-classical
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T09:37:10Z
audio: Albumblätter, Op. 39: II. Andante sostenuto
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  additional property: Loudness (dB)
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isrc code: DELN21403002
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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Albumblätter, Op. 39: III. Allegro
type: MusicRecording
duration: PT1M47S
duration ms: 107973
explicit: false
by artist: Hans Sitt
by artist: Tabea Zimmermann
by artist: Thomas Hoppe
in album: Romance Oubliée
  type: MusicAlbum
  date published: 2015-03-10
genre: czech-classical
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T15:42:38Z
audio: Albumblätter, Op. 39: III. Allegro
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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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  additional property: Loudness (dB)
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isrc code: DELN21403003
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960273
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T15:42:38+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELN21403003
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960273
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960273
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T15:42:38+00:00
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Albumblätter, Op. 39: IV. Allegro
type: MusicRecording
duration: PT1M20S
duration ms: 80773
explicit: false
by artist: Hans Sitt
by artist: Tabea Zimmermann
by artist: Thomas Hoppe
in album: Romance Oubliée
  type: MusicAlbum
  date published: 2015-03-10
genre: czech-classical
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0a6e56e1e322f50581711b91d5bbde824d9612325c2a31807cf69efcff5b5d. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DELN21403004.
  date published: 2026-07-30T20:09:33Z
audio: Albumblätter, Op. 39: IV. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 99.575
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.288
  additional property: Energy
    type: PropertyValue
    value: 0.169
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.985
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.559
  additional property: Liveness
    type: PropertyValue
    value: 0.247
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.456
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.825
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: DELN21403004
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960302
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T20:09:33+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELN21403004
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960302
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T20:09:33+00:00
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Albumblätter, Op. 39: V. Lento
type: MusicRecording
duration: PT5M32S
duration ms: 332386
explicit: false
by artist: Hans Sitt
by artist: Thomas Hoppe
by artist: Tabea Zimmermann
in album: Romance Oubliée
  type: MusicAlbum
  date published: 2015-03-10
genre: czech-classical
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8a9e76db5024dc29b480d11837616c070ccac08a044703859a709fddfb7433. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/DELN21403005.
  date published: 2026-07-31T09:50:11Z
audio: Albumblätter, Op. 39: V. Lento
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.537
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.087
  additional property: Energy
    type: PropertyValue
    value: 0.016
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.986
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.929
  additional property: Liveness
    type: PropertyValue
    value: 0.104
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.037
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.017
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: DELN21403005
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960381
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T09:50:11+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELN21403005
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960381
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960381
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T09:50:11+00:00
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Albumblätter, Op. 39: VI. Allegro, molto vivace
type: MusicRecording
duration: PT1M45S
duration ms: 105466
explicit: false
by artist: Hans Sitt
by artist: Tabea Zimmermann
by artist: Thomas Hoppe
in album: Romance Oubliée
  type: MusicAlbum
  date published: 2015-03-10
genre: czech-classical
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdb76a030b3f9a3b8ba6ab0d414750241d1fe828c2cdd9a614cc2761504b2fd. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELN21403006.
  date published: 2026-07-30T15:42:38Z
audio: Albumblätter, Op. 39: VI. Allegro, molto vivace
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.813
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.471
  additional property: Energy
    type: PropertyValue
    value: 0.205
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.973
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.501
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.774
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: DELN21403006
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960273
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T15:42:38+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELN21403006
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960273
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960273
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T15:42:38+00:00
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Peer Gynt-Suite Nr. 1, Op. 46: IV. In the Hall of the Mountain King
type: AudioObject
additional property: Tempo (BPM)
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  value: 122.891
additional property: Musical Key
  type: PropertyValue
  value: 4
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.476
additional property: Energy
  type: PropertyValue
  value: 0.073
additional property: Speechiness
  type: PropertyValue
  value: 0.054
additional property: Acousticness
  type: PropertyValue
  value: 0.845
additional property: Instrumentalness
  type: PropertyValue
  value: 0.967
additional property: Liveness
  type: PropertyValue
  value: 0.151
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.306
additional property: Loudness (dB)
  type: PropertyValue
  value: -22.317
additional property: Key Name
  type: PropertyValue
  value: E
additional property: Mode Name
  type: PropertyValue
  value: Minor

Fantasy Pieces, Op. 45: Summer Song
type: MusicRecording
duration: PT2M25S
duration ms: 145786
explicit: false
by artist: Agathe Backer Grøndahl
by artist: Iceland Symphony Orchestra
by artist: Bjarte Engeset
in album: Norwegian Classical Favourites
  type: MusicAlbum
  date published: 2004-01-05
isrc code: HKI190236004
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T14:56:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9b3d66d8606f13c783bf540c4c486d6f66f3fe69e1745271a70ebfb930d186dc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190236004
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3d66d8606f13c783bf540c4c486d6f66f3fe69e1745271a70ebfb930d186dc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190236004.
  date published: 2026-07-02T03:30:09Z
audio: Fantasy Pieces, Op. 45: Summer Song
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 111.639
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.124
  additional property: Energy
    type: PropertyValue
    value: 0.031
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.975
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.908
  additional property: Liveness
    type: PropertyValue
    value: 0.078
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.092
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.898
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Maria Stuart i Skotland (arr. J. Halvorsen): Valse Caprice
type: MusicRecording
duration: PT2M30S
duration ms: 150706
explicit: false
by artist: Rikard Nordraak
by artist: Johan Halvorsen
by artist: Iceland Symphony Orchestra
by artist: Bjarte Engeset
in album: Norwegian Classical Favourites
  type: MusicAlbum
  date published: 2004-01-05
isrc code: HKI190236011
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T03:21:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x32c982a662f9986ec34b187ebb847a231cc7ab8cec5c68f80227dea2a10c5fd5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190236011
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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 0x32c982a662f9986ec34b187ebb847a231cc7ab8cec5c68f80227dea2a10c5fd5. 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/HKI190236011.
  date published: 2026-07-08T03:22:41Z
audio: Maria Stuart i Skotland (arr. J. Halvorsen): Valse Caprice
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 143.057
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.174
  additional property: Energy
    type: PropertyValue
    value: 0.02
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.927
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.219
  additional property: Liveness
    type: PropertyValue
    value: 0.104
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.093
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.287
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Forest Clearing, Op. 15
type: MusicRecording
duration: PT4M30S
duration ms: 270813
explicit: false
by artist: Sigurd Islandsmoen
by artist: Iceland Symphony Orchestra
by artist: Bjarte Engeset
in album: Norwegian Classical Favourites
  type: MusicAlbum
  date published: 2004-01-05
isrc code: HKI190236012
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T11:09:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd80292462630a4726c0ed7c207cdfc63e85002faeb55fcca1f9bc64d4fc02b61
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190236012
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80292462630a4726c0ed7c207cdfc63e85002faeb55fcca1f9bc64d4fc02b61. 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/HKI190236012.
  date published: 2026-07-02T03:55:08Z
audio: Forest Clearing, Op. 15
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.17
  additional property: Energy
    type: PropertyValue
    value: 0.041
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.857
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.683
  additional property: Liveness
    type: PropertyValue
    value: 0.134
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.088
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.542
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
    value: Major

Student Violin Concertos: Conciertos para Violín y Piano
type: MusicAlbum
date published: 2019-03-11
track: Küchler: Violin concertino Op. 11 in G Major: I. Allegro moderato
  type: MusicRecording
  duration: PT3M27S
  duration ms: 207968
  explicit: false
  by artist: Ferdinand Küchler
  by artist: Maria Antònia Pons-Estel Tugores
  by artist: Valentin Moldovan
  in album: Student Violin Concertos: Conciertos para Violín y Piano
    type: MusicAlbum
    date published: 2019-03-11
  isrc code: ESA011930670
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-10T21:50:52+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe99e0be499cddbae7ea1788736278a155a8c9355ad84490bd1c2b83ad8257651
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953520
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953520
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011930670
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    date published: 2026-07-02T03:30:09Z
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track: Küchler: Violin concertino Op. 12 in D Major: I. Allegro moderato
track: Küchler: Violin concertino Op. 12 in D Major: II. Andante cantabile
track: Küchler: Violin concertino Op. 12 in D Major: III. Rondo: Allegreto
track: Küchler: Violin concertino Op. 15 in D Major: I. Allegro moderato
track: Küchler: Violin concertino Op. 15 in D Major: II. Siciliano / III. Allegro assai
track: Rieding: Violin concertino in Hungarian Style Op. 21 in A Minor: Andante sostenuto - Allegro moderato
track: Seitz: Student concerto No. 5, Op. 22 in D Major: I. Allegro moderato
track: Rieding: Violin concertino Op. 24 in G Major: I. Allegro moderato
track: Rieding: Violin concertino Op. 24 in G Major: III. Allegro
track: Rieding: Violin concertino Op. 25 in D Major: II. Adagio
track: Rieding: Violin concertino Op. 25 in D Major: III. Allegro
track: Rieding: Violin concerto Op. 35 in B Minor: I. Allegro moderato
track: Rieding: Violin concerto Op. 35 in B Minor: II. Andante
track: Rieding: Violin concerto Op. 35 in B Minor: III. Allegro moderato
track: Sitt: Violin concertino Op. 70 in A Minor: III. Allegretto
track: Sitt: Violin concertino Op. 70 in A Minor: I. Allegro

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OpenTimestamps Proof of Existence
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date published: 2026-07-02T05:09:12Z

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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
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by artist: Maria Antònia Pons-Estel Tugores
by artist: Valentin Moldovan
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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: 2026-07-02T11:34:59Z
audio: Küchler: Violin concertino Op. 15 in D Major: II. Siciliano / III. Allegro assai
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Rieding: Violin concertino in Hungarian Style Op. 21 in A Minor: Andante sostenuto - Allegro moderato
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by artist: Maria Antònia Pons-Estel Tugores
by artist: Valentin Moldovan
in album: Student Violin Concertos: Conciertos para Violín y Piano
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Rieding: Violin concertino in Hungarian Style Op. 21 in A Minor: Andante sostenuto - Allegro moderato
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by artist: Maria Antònia Pons-Estel Tugores
by artist: Valentin Moldovan
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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: 2026-07-21T22:47:50Z
audio: Seitz: Student concerto No. 5, Op. 22 in D Major: I. Allegro moderato
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Rieding: Violin concertino Op. 24 in G Major: I. Allegro moderato
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by artist: Maria Antònia Pons-Estel Tugores
by artist: Valentin Moldovan
in album: Student Violin Concertos: Conciertos para Violín y Piano
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  date published: 2019-03-11
isrc code: ESA011930682
additional property: CopyrightID
additional property: CopyrightStatus
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8514c0a48bf3ec94c01a4bb166e7603c08c16391ecb69b0a5a1612b9d81aadaa. 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/ESA011930682.
  date published: 2026-07-02T03:55:08Z
audio: Rieding: Violin concertino Op. 24 in G Major: I. Allegro moderato
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Rieding: Violin concertino Op. 24 in G Major: III. Allegro
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by artist: Oskar Rieding
by artist: Maria Antònia Pons-Estel Tugores
by artist: Valentin Moldovan
in album: Student Violin Concertos: Conciertos para Violín y Piano
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isrc code: ESA011930684
additional property: CopyrightID
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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: Rieding: Violin concertino Op. 24 in G Major: III. Allegro
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Rieding: Violin concertino Op. 25 in D Major: II. Adagio
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by artist: Maria Antònia Pons-Estel Tugores
by artist: Valentin Moldovan
in album: Student Violin Concertos: Conciertos para Violín y Piano
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  date published: 2019-03-11
isrc code: ESA011930686
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Rieding: Violin concertino Op. 25 in D Major: II. Adagio
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by artist: Maria Antònia Pons-Estel Tugores
by artist: Valentin Moldovan
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isrc code: ESA011930687
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Rieding: Violin concertino Op. 25 in D Major: III. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: 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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by artist: Sam Franko
by artist: Anne-Sophie Mutter
by artist: London Philharmonic Orchestra
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: Violin Concerto No. 3 in G Major, K. 216: I. Allegro
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Violin Concerto No. 3 in G Major, K. 216: III. Rondo (Allegro)
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T17:25:41Z
audio: Violin Concerto No. 3 in G Major, K. 216: III. Rondo (Allegro)
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Violin Concerto No. 5 in A Major, K. 219: I. Allegro aperto
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by artist: Anne-Sophie Mutter
by artist: London Philharmonic Orchestra
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
audio: Violin Concerto No. 5 in A Major, K. 219: I. Allegro aperto
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Am Brunnen vor dem Tore
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:30:09Z
  audio: Annchen von Tharau
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track: Die Lorelei: Ich weiss nicht, was soll es bedeuten
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
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track: Schone Ahnung ist erglommen, Op. 57, No. 2, J. 228, "Fruhlingslied"
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  audio: Schone Ahnung ist erglommen, Op. 57, No. 2, J. 228, "Fruhlingslied"
track: In stiller Nacht
track: 6 Songs, Op. 48: No. 4. Die Ehre Gottes aus der Natur, "Die Himmel ruhmen des Ewigen Ehre" (arr. C. Reinecke)
track: Nachtliches Standchen
track: Heidenroslein (Rose on the Heath) (arr. H. Sitt)

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OTSTimestamp
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:22:41Z

Schone Ahnung ist erglommen, Op. 57, No. 2, J. 228, "Fruhlingslied"
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In stiller Nacht
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popularity: 6
genre: classical
genre: german-romanticism
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: In stiller Nacht
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6 Songs, Op. 48: No. 4. Die Ehre Gottes aus der Natur, "Die Himmel ruhmen des Ewigen Ehre" (arr. C. Reinecke)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Nachtliches Standchen
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Nachtliches Standchen
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Grieg : The Best Of Grieg
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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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track: 2 Elegiac Melodies, Op. 34: No. 2. Varen (Last Spring)
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    date published: 2026-07-08T03:53:27Z
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track: Peer Gynt-Suite Nr. 1, Op. 46: I. Morning
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track: Peer Gynt-Suite Nr. 1, Op. 46: IV. In the Hall of the Mountain King
track: Fra Holbergs tid (From Holberg's Time), Op. 40 (version for orchestra): IV. Air
track: Norwegian Dances, Op. 35: No. 2 in A Major (arr. for orchestra)

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

Peer Gynt-Suite Nr. 1, Op. 46: I. Morning
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Peer Gynt-Suite Nr. 1, Op. 46: IV. In the Hall of the Mountain King
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subject of: OpenTimestamps Proof of Existence
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AMEB Violin Series 9 Sixth Grade
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  subject of: OpenTimestamps Proof of Existence
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track: Fantasia on Greensleeves
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  audio: Fantasia on Greensleeves
track: Three Compositions, Op. 19: No. 3, Lullaby
track: Csárdás
track: 100 Etüden, Op. 32: No. 88, Andante

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

Fantasia on Greensleeves
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Three Compositions, Op. 19: No. 3, Lullaby
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Csárdás
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The Best Classical Music of All Time
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track: The Sleeping Beauty, Op. 66, TH. 13, Act I: 6. Waltz
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:22:41Z

The Sleeping Beauty, Op. 66, TH. 13, Act I: 6. Waltz
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Romance Oubliée
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track: Albumblätter, Op. 39: I. Moderato
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track: Albumblätter, Op. 39: II. Andante sostenuto
track: Albumblätter, Op. 39: III. Allegro
track: Albumblätter, Op. 39: IV. Allegro
track: Albumblätter, Op. 39: V. Lento
track: Albumblätter, Op. 39: VI. Allegro, molto vivace

Rainforest Rhapsody
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Grieg: Complete Orchestral Works
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track: Peer Gynt Suite No. 1, Op. 46: IV. I Dovregubbens hall (In the Hall of the Mountain King)
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Pièces de concours
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Grieg: Orchestral Music, Vol. 2 - Orchestrated Piano Pieces
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Grieg: Peer Gynt Suites Nos. 1 and 2
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Grieg, E.: From Holberg's Time / Sibelius, J.: Karelia Suite / Finlandia / Valse Triste / Suite Champetre
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Music of Reinecke, Sitt, & Kalliwoda
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Grieg (The Best Of)
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Bijoux
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Ambiance
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Brahms / Reinecke / Herzogenberg / Kiel / Fuchs / Sitt: Viola Works
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Impressions
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