Shostakovich Quartet
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genre: chamber music
genre: classical
description: The Shostakovich Quartet was a string quartet formed in September 1966 at the Moscow Conservatory, and which continued to perform for some 47 years (with varied line-up, but with the original 'cellist
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album: Borodin: String Quartet No. 1 & No. 2
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album: Great Russian String Quartets
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album: 100 Most Relaxing Classical Music In The Universe
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  track: Vocalise, Op. 34
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  track: Suite No. 3 In D Major BWV 1068: Air
  track: The Four Seasons, Concerto No. 4 In F Minor (L'inverno / Winter) RV. 297 (Op. 8, No. 4): II. Largo
  track: Piano Concerto In A Minor, Op. 16: II. Adagio
  track: Tales Of Hoffmann: Barcarolle
  track: Thais: Meditation
  track: Prelude To The Afternoon Of A Faun (Prelude A I'apres-Midi D'un Faune)
  track: Piano Sonata No. 14 In C-Sharp Minor Op 27, No. 2 "Moonlight": I. Adagio Sostenuto
  track: Songs Without Words, Op. 62: No. 6 in A Major: Molto allegro vivace "Fruhlinglied" (Spring Melody)
  track: Dance Of The Blessed Spirits
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  track: Adagio in G Minor
  track: Carnival Of The Animals: The Swan
  track: Valse Triste, Op 44
  track: Pavane For A Dead Princess
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album: 111 Amazing Classical: Chillout
album: The 99 Most Essential Relaxing Classics
album: The Most Relaxing Classical Music In The Universe
album: La Musica Clasica Mas Relajante En El Universo
album: Tchaikovsky Light Classical
album: Tchaikovsky at Home
album: Tchaikovsky Relaxing Works
album: This Is Tchaikovsky
album: Chamber Chill - The Most Relaxing Chamber Music
album: Classical Focus
album: 111 Amazing Classical: Reading Music
album: The 50 Most Essential Relaxing Classics
album: 111 Amazing Classical: Study Music
album: Música Clásica: Relajante
album: Glazunov: String Quartets Nos. 3 & 5, Music from "The Fridays"
album: Tchaikovsky: Complete Music for String Quartet
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album: Belyaevsky Group-Collective Works by Russian Composers Played by The Shostakovich Quartet
album: Tchaikovsky: String Quartet No. 3 - Grechaninov: String Quartet, Op. 2
album: Tchaikovsky: String Quartet No. 1, 2 & Five Early Pieces
album: Shostakovich: Complete String Quartets, Vol. 5
album: Shostakovich: Complete String Quartets, Vol. 4
album: Shostakovich: Complete String Quartets, Vol. 3
album: Shostakovich: Complete String Quartets, Vol. 2
album: Shostakovich: Complete String Quartets, Vol. 1
album: Glinka & Tchaikovsky: Chamber Music
album: Glinka & Glazunov: Chamber Music
album: Glazunov: String Quartet No. 6, Op. 106 & No. 7, Op.107
album: Glazunov: String Quartet No. 3, No. 5 & Other Works
album: The 99 Most Essential Summer Classics
album: Classical Strings
album: Tchaikovsky Hits
album: The Ultimate Most Relaxing Tchaikovsky In the Universe
album: Best of Tchaikovsky
album: Classical Hits for Relaxing

String Quartet No. 1
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String Quartet No. 8 in C Minor, Op. 110: V. Largo
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String Quartet No. 8 in C Minor, Op. 110: I. Largo
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String Quartet No. 8 in C Minor, Op. 110: II. Allegro molto
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Suite No. 3 In D Major BWV 1068: Air
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The Four Seasons, Concerto No. 4 In F Minor (L'inverno / Winter) RV. 297 (Op. 8, No. 4): II. Largo
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Piano Concerto In A Minor, Op. 16: II. Adagio
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Tales Of Hoffmann: Barcarolle
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Thais: Meditation
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Prelude To The Afternoon Of A Faun (Prelude A I'apres-Midi D'un Faune)
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Piano Sonata No. 14 In C-Sharp Minor Op 27, No. 2 "Moonlight": I. Adagio Sostenuto
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subject of: OpenTimestamps Proof of Existence
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audio: Piano Sonata No. 14 In C-Sharp Minor Op 27, No. 2 "Moonlight": I. Adagio Sostenuto
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Songs Without Words, Op. 62: No. 6 in A Major: Molto allegro vivace "Fruhlinglied" (Spring Melody)
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subject of: OpenTimestamps Proof of Existence
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Dance Of The Blessed Spirits
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subject of: OpenTimestamps Proof of Existence
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audio: Dance Of The Blessed Spirits
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Piano Concerto No. 21 In C K. 467: II. Andante
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audio: Piano Concerto No. 21 In C K. 467: II. Andante
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Water Music Suite No. 1 In F Major, HV 348: V. Air
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audio: Water Music Suite No. 1 In F Major, HV 348: V. Air
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Menuetto
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Well Tempered Klavier, Book I, No. 22 BWV 867
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Ave Maria
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The Four Seasons: Concerto No. 1 In E Major, Op. 8, RV 269, "Spring": I. Allegro (Danza Pastorale)
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Kinderszenen, Op. 15: No. 7. Traumerei
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Ballade No. 1 In G Minor, Op. 23
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Symphony No. 5 In C Minor, Op. 67 "Fate": II. Andante Con Moto
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Adagio in G Minor
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Carnival Of The Animals: The Swan
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Valse Triste, Op 44
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Valse Triste, Op 44
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Pavane For A Dead Princess
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by artist: Moscow RTV Symphony Orchestra
by artist: Alexander Kopylov
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genre: classical
genre: impressionism
genre: neoclassicism
genre: post-romantic-era
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T18:39:05Z
audio: Pavane For A Dead Princess
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Piano Concerto No. 2 In F Minor Op 21: II. Larghetto
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by artist: Oliver von Dohnanyi
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popularity: 3
genre: classical
genre: early-romantic-era
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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: Piano Concerto No. 2 In F Minor Op 21: II. Larghetto
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111 Amazing Classical: Chillout
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The 99 Most Essential Relaxing Classics
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
  audio: Requiem, Op. 48: IV. Pie Jesu
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track: Spiegel im Spiegel for Violin and Piano (1978)
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-06-13T17:25:41Z
  audio: Spiegel im Spiegel for Violin and Piano (1978)
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track: Suite No. 1 in G Major for Solo Cello, BWV 1007: I. Prelude
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  subject of: OpenTimestamps Proof of Existence
  audio: Suite No. 1 in G Major for Solo Cello, BWV 1007: I. Prelude
track: Orpheus and Eurydice: Dance of the Blessed Spirits

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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb692c6a70f8616fecef92c2dbbf7ed40f279db5b0720a08fda91a9af82568e1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEAEI9603010.
date published: 2026-06-13T17:25:41Z

Suite No. 1 in G Major for Solo Cello, BWV 1007: I. Prelude
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Orpheus and Eurydice: Dance of the Blessed Spirits
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by artist: Jan-Olav Wedin
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: Orpheus and Eurydice: Dance of the Blessed Spirits
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track: Holberg Suite: Sarabande
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date published: 2026-06-13T12:47:07Z

Eine kleine Nachtmusik: Andante
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Holberg Suite: Sarabande
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Fur Elise
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Valse Triste
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  date published: 2026-06-13T12:53:06Z
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Concerto In F Minor: Largo
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  date published: 2026-06-13T12:53:06Z
audio: Concerto In F Minor: Largo
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  additional property: Energy
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Clair de Lune
type: MusicRecording
duration: PT4M21S
duration ms: 261760
explicit: false
by artist: Claude Debussy
by artist: Latvian Philharmonic Chamber Orchestra
by artist: Ilmar Lapinsch
in album: The Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 35
genre: classical
genre: impressionism
genre: post-romantic-era
isrc code: USSJ10301388
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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  value: 2026-06-13T12:47:07Z
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 0xd6546a02667a50360fbc689dc36447b352ae0d37d7cb4102c47ddbda6815696d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSJ10301388.
  date published: 2026-06-13T12:47:07Z
audio: Clair de Lune
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    value: 1
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    type: PropertyValue
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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Notturno In B Major For Strings, Op. 40
type: MusicRecording
duration: PT4M6S
duration ms: 246080
explicit: false
by artist: Antonín Dvořák
by artist: Prague Chamber Orchestra
in album: The Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 29
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: USSJ10301403
additional property: CopyrightID
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10301403
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b495e7ce5807949636db6a72ee9a686c8efa28d981f0c95ed7d54a5f45479c3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSJ10301403.
  date published: 2026-06-13T17:25:41Z
audio: Notturno In B Major For Strings, Op. 40
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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Idyl for Strings: Adagio
type: MusicRecording
duration: PT5M41S
duration ms: 341200
explicit: false
by artist: Leoš Janáček
by artist: Prague Chamber Orchestra
in album: The Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 33
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: USSJ10301389
additional property: CopyrightID
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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
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4291c2b74e99de212a301e37547b9f2b8d99e2eb81fca512bda0e57ec5837d4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10301389.
  date published: 2026-06-13T15:41:10Z
audio: Idyl for Strings: Adagio
  type: AudioObject
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  additional property: Danceability
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  additional property: Energy
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  additional property: Valence (Positivity)
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Liebestraume
type: MusicRecording
duration: PT5M13S
duration ms: 313000
explicit: false
by artist: Franz Liszt
by artist: Ayako Shinozaki
by artist: Ensemble Lunaire
in album: The Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 32
genre: classical
genre: late-romantic-era
isrc code: USSJ10301404
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f55c82cf86a7beea72d5bdb9880d6bdb95f263d8ca37d138dac23edfdcd6775. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10301404.
  date published: 2026-06-13T15:41:10Z
audio: Liebestraume
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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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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Adagio In G Minor
type: MusicRecording
duration: PT8M31S
duration ms: 511240
explicit: false
by artist: Tomaso Albinoni
by artist: Ilmar Lapinsch
by artist: Latvian Philharmonic Chamber Orchestra
in album: The Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 33
genre: classical
isrc code: USSJ10301390
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ab345b7dfb87041477c58e94e0d0b2be5f2d6673a69984f28179205dea8a89. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10301390.
  date published: 2026-06-13T15:41:10Z
audio: Adagio In G Minor
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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Ave Maria
type: MusicRecording
duration: PT4M30S
duration ms: 270666
explicit: false
by artist: Charles Gounod
by artist: Johann Sebastian Bach
by artist: Maxence Larrieu
by artist: Susanna Mildonian
in album: The Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 30
genre: opera
isrc code: USSJ10301405
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T19:09:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3d505b1fe523ca45d5ee1660923a239641f3c10ebdeb6bc959dfc121d57f92fd
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953536
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10301405
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d505b1fe523ca45d5ee1660923a239641f3c10ebdeb6bc959dfc121d57f92fd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSJ10301405.
  date published: 2026-06-13T17:25:41Z
audio: Ave Maria
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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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  additional property: Energy
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  additional property: Acousticness
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The Girl With The Flaxen Hair
type: MusicRecording
duration: PT2M17S
duration ms: 137840
explicit: false
by artist: Claude Debussy
by artist: Jacques Rouvier
in album: The Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 39
genre: classical
genre: impressionism
genre: post-romantic-era
isrc code: USSJ10301391
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T11:58:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa9b759af089b262c20e052a22fd02dba5112e87d97bebeac8eb54f501f701c62
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
audio: The Girl With The Flaxen Hair
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Etude In E Major
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by artist: Frédéric Chopin
by artist: Konstantin Lifschitz
in album: The Most Relaxing Classical Music In The Universe
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popularity: 29
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: USSJ10301406
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bcd86dc3198129e48b147b537e458541903152863aa1440bfd411e6d6a78ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSJ10301406.
  date published: 2026-06-13T17:25:41Z
audio: Etude In E Major
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Air On A G String
type: MusicRecording
duration: PT3M25S
duration ms: 205120
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by artist: Johann Sebastian Bach
by artist: Royal Philharmonic Orchestra
by artist: Frank Shipway
in album: The Most Relaxing Classical Music In The Universe
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  date published: 2009-01-01
popularity: 52
genre: classical
genre: classical-piano
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T15:41:10Z
audio: Air On A G String
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String Quartet No. 2: Nocturne
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duration: PT7M44S
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by artist: Alexander Borodin
by artist: Prague Chamber Orchestra
in album: The Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 29
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: russian-romanticism
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T15:41:10Z
audio: String Quartet No. 2: Nocturne
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Greensleeves
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duration: PT4M33S
duration ms: 273120
explicit: false
by artist: Ralph Vaughan Williams
by artist: Philharmonia Orchestra
in album: The Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 36
isrc code: USSJ10301393
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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  date published: 2026-06-13T15:41:10Z
audio: Greensleeves
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Arabesque
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duration: PT3M55S
duration ms: 235000
explicit: false
by artist: Claude Debussy
by artist: Jacques Rouvier
in album: The Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 32
genre: classical
genre: impressionism
genre: post-romantic-era
isrc code: USSJ10301408
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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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 0x70ee5d43dc3150c556490c66471dad8b62d38e94775865661614a24f9eb47b5f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10301408.
  date published: 2026-06-13T12:53:06Z
audio: Arabesque
  type: AudioObject
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  additional property: Mode (Major/Minor)
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Largo From Xerxes
type: MusicRecording
duration: PT4M11S
duration ms: 251186
explicit: false
by artist: George Frideric Handel
by artist: Maxence Larrieu
by artist: Susanna Mildonian
in album: The Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 32
genre: classical
genre: early-music
genre: baroque
genre: english-baroque
genre: german-baroque
isrc code: USSJ10301394
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
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953536
additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T17:25:41Z
audio: Largo From Xerxes
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  additional property: Mode (Major/Minor)
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  additional property: Energy
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  additional property: Speechiness
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Pavane For Dead Princess
type: MusicRecording
duration: PT6M42S
duration ms: 402960
explicit: false
by artist: Maurice Ravel
by artist: Orchestre National De France
in album: The Most Relaxing Classical Music In The Universe
  type: MusicAlbum
  date published: 2009-01-01
popularity: 30
genre: classical
genre: impressionism
genre: neoclassicism
genre: post-romantic-era
isrc code: USSJ10301409
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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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: 2026-06-13T17:25:41Z
audio: Pavane For Dead Princess
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Prelude In C
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by artist: Valery Afanassiev
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popularity: 32
genre: classical
genre: classical-piano
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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: Prelude In C
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The Four Seasons - Violin Concerto In F Minor, RV 297, "Winter": II. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: The Four Seasons - Violin Concerto In F Minor, RV 297, "Winter": II. Largo
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The Planets: Venus
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by artist: Royal Philharmonic Orchestra
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popularity: 32
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T17:25:41Z
audio: The Planets: Venus
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Gymnopedie 1
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by artist: Yuji Takahashi
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popularity: 29
genre: classical
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genre: impressionism
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T15:41:10Z
audio: Gymnopedie 1
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Goldberg Variations: Aria
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by artist: Konstantin Lifschitz
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popularity: 30
genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:53:06Z
audio: Goldberg Variations: Aria
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Moonlight Sonata: Adagio
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by artist: Daniela Ruso
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popularity: 30
genre: classical
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:53:06Z
audio: Moonlight Sonata: Adagio
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Adagio For Strings
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by artist: I Solisti Italiani
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additional property: OTSVerificationAPI
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  date published: 2026-06-13T17:25:41Z
audio: Adagio For Strings
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Concerto No. 21 in C Major for Piano and Orchestra, K. 467 - "Elvira Madigan": II. Andante
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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La Musica Clasica Mas Relajante En El Universo
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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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  subject of: OpenTimestamps Proof of Existence
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track: Adagio In G Minor
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:53:27Z

Adagio In G Minor
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Air On A G String
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Air On A G String
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Tchaikovsky Light Classical
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  subject of: OpenTimestamps Proof of Existence
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:22:41Z

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    date published: 2026-07-08T03:22:41Z
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track: Souvenir de Hapsal, Op. 2: III. Chant sans Paroles in F Major

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

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This Is Tchaikovsky
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Piano Quintet No. 2 in A Major, Op. 81: II. Dumka: Andante con moto
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Sonata in G Minor for Cello and Piano, Op. 19: III. Andante
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String Quartet No. 15 in D Minor, K. 421 (Haydn Quartet No. 2): II. Andante
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Sonata No. 6 in A Major for Violin and Piano, Op. 30: II. Adagio
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Classical Focus
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Suite Bergamasque, L. 75: III. Clair de lune
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Violin Concerto in D Major, Op. 35: II. Canzonetta. Andante
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Romance No. 2 in F Major for Violin and Orchestra, Op. 50
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duration ms: 521039
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by artist: Ludwig van Beethoven
by artist: Ilmar Lapinsch
by artist: Alexei Bruni
by artist: State Symphony Capella of Russia
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genre: classical
genre: classical-piano
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Romance No. 2 in F Major for Violin and Orchestra, Op. 50
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Valse Triste, Op. 44
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duration: PT5M33S
duration ms: 333906
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by artist: Marko Munih
by artist: RTV Slovenia Symphony Orchestra
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genre: impressionism
genre: post-romantic-era
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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: Valse Triste, Op. 44
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Liebesträume, S. 541: No. 3, Oh lieb, so lang du lieben kannst
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by artist: Květa Novotná
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Liebesträume, S. 541: No. 3, Oh lieb, so lang du lieben kannst
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Clarinet Quintet in A Major, K. 581: I. Allegro
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by artist: David Smith
by artist: Gabrieli String Quartet
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genre: classical-era
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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: Clarinet Quintet in A Major, K. 581: I. Allegro
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Romance No. 1 in G Major for Violin and Orchestra, Op. 40
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duration: PT7M36S
duration ms: 456666
explicit: false
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by artist: Hans Vonk
by artist: Emmy Verhey
by artist: Utrecht Symphony Orchestra
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genre: classical
genre: classical-piano
genre: chamber-music
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additional property: CopyrightID
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additional property: OTSVerificationAPI
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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: Romance No. 1 in G Major for Violin and Orchestra, Op. 40
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String Quartet No. 1 in D Major, Op. 11: II. Andante cantabile
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duration ms: 398680
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by artist: Shostakovich Quartet
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: String Quartet No. 1 in D Major, Op. 11: II. Andante cantabile
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Jeux d'enfants, Op. 22: XI, Petit mari, Petite femme!
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by artist: Karin Lechner
by artist: Sergio Tiempo
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genre: classical
genre: opera
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additional property: OTSVerificationAPI
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Jeux d'enfants, Op. 22: XI, Petit mari, Petite femme!
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111 Amazing Classical: Reading Music
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The 50 Most Essential Relaxing Classics
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111 Amazing Classical: Study Music
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Música Clásica: Relajante
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Nocturne No. 20 in C-Sharp Minor, Op. Posth.: Lento con gran espressione
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audio: Le quattro stagioni (The Four Seasons), Op. 8 - Concerto No. 4 in F Minor, RV 297, "L'inverno" (Winter): II. Largo
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Xerxes, Act 1: "Ombra mai fu"
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Symphony No. 5 in C Minor, Op. 67, "Fate": II. Andante con moto
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Cavalleria Rusticana: Symphonic Intermezzo
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Prélude à l'après-midi d'un faune (Prelude to a faun's afternoon), L 86
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Peer Gynt Suite No. 1, Op. 46: Morning Mood
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Pavane pour une infante défunte (Pavane for a Dead Princess), M. 19
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String Quartet No. 1 in D Major, Op. 11: II. Andante cantabile
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subject of: OpenTimestamps Proof of Existence
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The Planets, Op. 32: II. Venus, the Bringer of Peace
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subject of: OpenTimestamps Proof of Existence
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Le carnaval des animaux (The Carnival of the Animals): Le cygne (The Swan)
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subject of: OpenTimestamps Proof of Existence
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Kinderszenen (Childhood Scenes), Op. 15: VII. Träumerei (Dreaming)
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Concerto No. 1 in D Minor for Piano and Orchestra, Op. 15: II. Adagio
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Goldberg Variations, BWV 988: Aria
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Nocturnes, Op. 9: No. 2 in E-Flat Major
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Sonata No. 8 in C Minor for Piano, Op. 13, "Pathétique": Adagio cantabile
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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: Sonata No. 8 in C Minor for Piano, Op. 13, "Pathétique": Adagio cantabile
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Bagatelle in A Minor, WoO 59, "Für Elise"
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duration ms: 196013
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in album: Música Clásica: Relajante
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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 0x58e285b26db13234d2cfc08e739cb5491001bf4ec8dc176f3885d23e3e1e8c87. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL9750022.
  date published: 2026-07-08T08:56:20Z
audio: Bagatelle in A Minor, WoO 59, "Für Elise"
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Messiah, HWV 56: Pifa (Pastoral Symphony)
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by artist: Lithuanian Chamber Orchestra
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790301043
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05e06bb17625e6bba77227bea5e56df470a1f9a646cfdcf9360c4d426345fd6. 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/DEB790301043.
  date published: 2026-07-08T03:20:19Z
audio: Messiah, HWV 56: Pifa (Pastoral Symphony)
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Suite bergamasque, L 75: Clair de lune
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duration: PT5M13S
duration ms: 313906
explicit: false
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in album: Música Clásica: Relajante
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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: 2026-07-08T03:53:27Z
audio: Suite bergamasque, L 75: Clair de lune
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The Nutcracker, Op. 71a: XI. The Magic Castle on Candy Mountain (attacca)
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explicit: false
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  date published: 2012-04-03
genre: classical
genre: opera
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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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  date published: 2026-07-08T08:56:20Z
audio: The Nutcracker, Op. 71a: XI. The Magic Castle on Candy Mountain (attacca)
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Symphony No. 8 in B Minor, D. 759, "The Unfinished": II. Andante con moto
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duration: PT10M30S
duration ms: 630840
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in album: Música Clásica: Relajante
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Symphony No. 8 in B Minor, D. 759, "The Unfinished": II. Andante con moto
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Concerto in G Minor for Violin and Strings, BWV 1056R: II. Arioso: Largo
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duration: PT3M14S
duration ms: 194893
explicit: false
by artist: Emmy Verhey
by artist: Camerata Antonio Lucio
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
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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: Concerto in G Minor for Violin and Strings, BWV 1056R: II. Arioso: Largo
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Symphony No. 3 in F Major, Op. 90: III. Poco allegretto
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duration: PT6M39S
duration ms: 399800
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  date published: 2012-04-03
genre: orchestra
genre: german-orchestra
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Symphony No. 3 in F Major, Op. 90: III. Poco allegretto
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Motet in D Major for Choir and Orchestra, K. 618: Ave verum corpus
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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: Motet in D Major for Choir and Orchestra, K. 618: Ave verum corpus
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Peer Gynt Suite No. 2, Op. 55: Solveigs Song
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Peer Gynt Suite No. 2, Op. 55: Solveigs Song
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Deux arabesques, L 66: No. 1
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Deux arabesques, L 66: No. 1
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Swan Lake, Ballet Suite, Op. 20: IV. Pas d'Action
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subject of: OpenTimestamps Proof of Existence
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audio: Swan Lake, Ballet Suite, Op. 20: IV. Pas d'Action
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Le quattro stagioni (The Four Seasons), Op. 8 - Concerto No. 1 in E Major, RV 269, "La primavera" (Spring): I. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Le quattro stagioni (The Four Seasons), Op. 8 - Concerto No. 1 in E Major, RV 269, "La primavera" (Spring): I. Allegro
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Carnaval, Op. 9, "Scenes mignonnes sur quatre notes": VIII. Replique
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Etude No. 3 in E Major, Op. 10, "Tristesse": Lento ma non troppo
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Tchaikovsky: Complete Music for String Quartet
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Borodin String Quartets Nos. 1 & 2
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Belyaevsky Group-Collective Works by Russian Composers Played by The Shostakovich Quartet
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Tchaikovsky: String Quartet No. 3 - Grechaninov: String Quartet, Op. 2
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Tchaikovsky: String Quartet No. 1, 2 & Five Early Pieces
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Tchaikovsky Hits
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The Ultimate Most Relaxing Tchaikovsky In the Universe
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Best of Tchaikovsky
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      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.429
    additional property: Energy
      type: PropertyValue
      value: 0.029
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.992
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.877
    additional property: Liveness
      type: PropertyValue
      value: 0.078
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.123
    additional property: Loudness (dB)
      type: PropertyValue
      value: -27.595
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major