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description: Louis-Gabriel Guillemain (5 November 1705 – 1 October 1770) was a French composer and violinist. Biography Guillemain is thought to have been born in Paris, was brought up by the Count de Rochechouar
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album: Louis-Gabriel Guillemain, Vol. 2: Amusement, Op. 18 – La Furstemberg & Variations (Remastered 2024)
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album: Louis-Gabriel Guillemain, Vol. 1: Amusement, Op. 18 - Capriccios Nos. 1-12 (Remastered 2023)
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album: Guillemain: Douze Caprices pour le violon seul, Op. 18
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  date published: 2012-10-01
album: Guillemain: Amusement, Op. 18
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  track: "Sonate en Quatuor" in A Minor, Op. 17 No. 6: II. Aria Grazioso
  track: "Sonate en Quatuor" in A Minor, Op. 17 No. 6: III. Presto
album: Leclair and his Rivals
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album: Solo: Matteis - Pisendel - Biber - Guillemain - Vilsmayr
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  track: Sonata for Solo Violin in A Minor: IV. Variations
  track: Amusement pour le violon seul, Op. 18: Allegretto
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album: Louis-Gabriel Guillemain: Flute Quartets, Op. 12
album: Relaxing Classical
album: Playback
album: Birth of the Strings
album: The Musicians' Table (The Perfection of Music, Masterpieces of the French Baroque, Vol. V)
album: Sonatas for two violins
album: French Sonatas for Harpsichord and Violin
album: The Perfection of Music: Masterpieces of the French Baroque
album: Music from Five Centuries: 17th - 21st
album: Obsession
album: Guillemain: Second livre de sonates en quatuor, œuvre XVII
album: Brillance Indéniable: The Virtuoso Violin in the Court of Louis XV • Sonatas and Symphonies by Louis-Gabriel Guillemain
album: Louis-Gabriel Guillemain: Sonates en quatuors
album: Guillemain: Amusements
album: Guillemain : Conversations galantes & amusantes
album: Conversations Galantes Et Amusantes
album: Conversations
album: The Perfection of Music, Vol. 3: The Concert Spirituel
album: Birth of the String Quartet, Vol. 2
album: Birth of the Violin
album: Entre Paris Et Versailles (Remastered 2023)
album: La flûte de Monsieur Buffardin

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"Sonate en Quatuor" in A Minor, Op. 17 No. 6: II. Aria Grazioso
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"Sonate en Quatuor" in A Minor, Op. 17 No. 6: III. Presto
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Amusement pour le violon seul, Op. 18: Allegretto
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by artist: Isabelle Faust
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  date published: 2026-07-08T03:53:27Z
audio: Amusement pour le violon seul, Op. 18: Allegretto
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Amusement pour le violon seul, Op. 18: Andantino
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explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Isabelle Faust
in album: Solo: Matteis - Pisendel - Biber - Guillemain - Vilsmayr
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additional property: OTSVerifyInstructions
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  date published: 2026-07-08T03:20:19Z
audio: Amusement pour le violon seul, Op. 18: Andantino
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Amusement pour le violon seul, Op. 18: [Altro]
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by artist: Isabelle Faust
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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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  date published: 2026-07-08T03:20:19Z
audio: Amusement pour le violon seul, Op. 18: [Altro]
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Amusement pour le violon seul, Op. 18: Allegro
type: MusicRecording
duration: PT1M58S
duration ms: 118880
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Isabelle Faust
in album: Solo: Matteis - Pisendel - Biber - Guillemain - Vilsmayr
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genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T14:28:24Z
audio: Amusement pour le violon seul, Op. 18: Allegro
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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Amusement pour le violon seul, Op. 18: Allegro - Majestoso
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duration: PT1M16S
duration ms: 76560
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Isabelle Faust
in album: Solo: Matteis - Pisendel - Biber - Guillemain - Vilsmayr
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genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
audio: Amusement pour le violon seul, Op. 18: Allegro - Majestoso
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additional property: OTSVerifyInstructions
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Amusement pour le violon seul, Op. 18: Aria - Gratioso
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genre: chamber-music
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  date published: 2026-07-29T23:23:05Z
audio: Amusement pour le violon seul, Op. 18: Aria - Gratioso
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additional property: OTSVerifyInstructions
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Amusement pour le violon seul, Op. 18: Variatione
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genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T05:15:54Z
audio: Amusement pour le violon seul, Op. 18: Variatione
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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

Amusement pour le violon seul, Op. 18: Altro
type: MusicRecording
duration: PT1M40S
duration ms: 100760
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Isabelle Faust
in album: Solo: Matteis - Pisendel - Biber - Guillemain - Vilsmayr
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genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T06:39:12Z
audio: Amusement pour le violon seul, Op. 18: Altro
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Sonata No. 1 in G Major, Op. 12, No. 1: I. Allegro moderato
type: MusicRecording
duration: PT4M13S
duration ms: 253646
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Wilbert Hazelzet
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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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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: 2026-07-08T03:22:41Z
audio: Sonata No. 1 in G Major, Op. 12, No. 1: I. Allegro moderato
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Sonata in D Minor, Op. 4, No. 2: II. Largo
type: MusicRecording
duration: PT3M36S
duration ms: 216299
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Johannes Pramsohler
by artist: Roldán Bernabé
in album: Sonatas for two violins
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genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T19:03:14Z
audio: Sonata in D Minor, Op. 4, No. 2: II. Largo
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additional property: OTSVerifyInstructions
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Sonata in D Minor, Op. 4, No. 2: I. Allegro
type: MusicRecording
duration: PT6M0S
duration ms: 360872
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Johannes Pramsohler
by artist: Roldán Bernabé
in album: Sonatas for two violins
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genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T15:42:38Z
audio: Sonata in D Minor, Op. 4, No. 2: I. Allegro
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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Sonata in D Minor, Op. 4, No. 2: III. Allegro
type: MusicRecording
duration: PT5M33S
duration ms: 333520
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Johannes Pramsohler
by artist: Roldán Bernabé
in album: Sonatas for two violins
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genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T15:42:38Z
audio: Sonata in D Minor, Op. 4, No. 2: III. Allegro
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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Violin Sonata in B Minor, Op. 1, No. 3: IV. Allegro assai
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duration: PT3M20S
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by artist: Alana Youssefian
by artist: Le Bien-Aimé
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genre: chamber-music
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additional property: OTSVerifyInstructions
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additional property: TokenDeploymentConfirmed
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  date published: 2026-07-02T11:34:59Z
audio: Violin Sonata in B Minor, Op. 1, No. 3: IV. Allegro assai
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Violin Sonata in B Minor, Op. 1, No. 3: I. Andanté
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by artist: Louis-Gabriel Guillemain
by artist: Alana Youssefian
by artist: Le Bien-Aimé
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genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:20:15Z
audio: Violin Sonata in B Minor, Op. 1, No. 3: I. Andanté
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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

Violin Sonata in B Minor, Op. 1, No. 3: II. Allemanda - Allegro ma non presto
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duration: PT3M12S
duration ms: 192000
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Alana Youssefian
by artist: Le Bien-Aimé
in album: Brillance Indéniable: The Virtuoso Violin in the Court of Louis XV • Sonatas and Symphonies by Louis-Gabriel Guillemain
  type: MusicAlbum
  date published: 2020-04-03
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d0e669d437ebf4403bfdad151dea3dfa1e0f291f0a026e7fef0444f62f8f96. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GBELX2007194.
  date published: 2026-07-31T05:48:18Z
audio: Violin Sonata in B Minor, Op. 1, No. 3: II. Allemanda - Allegro ma non presto
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additional property: OTSVerifyInstructions
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Violin Sonata in B Minor, Op. 1, No. 3: III. Gratioso
type: MusicRecording
duration: PT1M40S
duration ms: 100000
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Alana Youssefian
by artist: Le Bien-Aimé
in album: Brillance Indéniable: The Virtuoso Violin in the Court of Louis XV • Sonatas and Symphonies by Louis-Gabriel Guillemain
  type: MusicAlbum
  date published: 2020-04-03
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T20:22:46Z
audio: Violin Sonata in B Minor, Op. 1, No. 3: III. Gratioso
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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Symphony in G Major, Op. 14, No. 6: I. Allegro
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duration: PT4M13S
duration ms: 253000
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Alana Youssefian
by artist: Le Bien-Aimé
in album: Brillance Indéniable: The Virtuoso Violin in the Court of Louis XV • Sonatas and Symphonies by Louis-Gabriel Guillemain
  type: MusicAlbum
  date published: 2020-04-03
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T03:41:24Z
audio: Symphony in G Major, Op. 14, No. 6: I. Allegro
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additional property: OTSVerifyInstructions
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Symphony in G Major, Op. 14, No. 6: II. Andantino
type: MusicRecording
duration: PT3M30S
duration ms: 210000
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Alana Youssefian
by artist: Le Bien-Aimé
in album: Brillance Indéniable: The Virtuoso Violin in the Court of Louis XV • Sonatas and Symphonies by Louis-Gabriel Guillemain
  type: MusicAlbum
  date published: 2020-04-03
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T03:13:03Z
audio: Symphony in G Major, Op. 14, No. 6: II. Andantino
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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Symphony in G Major, Op. 14, No. 6: III. Presto
type: MusicRecording
duration: PT4M35S
duration ms: 275000
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Alana Youssefian
by artist: Le Bien-Aimé
in album: Brillance Indéniable: The Virtuoso Violin in the Court of Louis XV • Sonatas and Symphonies by Louis-Gabriel Guillemain
  type: MusicAlbum
  date published: 2020-04-03
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T16:09:41Z
audio: Symphony in G Major, Op. 14, No. 6: III. Presto
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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Violin Sonata in C Minor, Op. 1, No. 8: III. Allegro ma non presto
type: MusicRecording
duration: PT4M5S
duration ms: 245000
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Alana Youssefian
by artist: Le Bien-Aimé
in album: Brillance Indéniable: The Virtuoso Violin in the Court of Louis XV • Sonatas and Symphonies by Louis-Gabriel Guillemain
  type: MusicAlbum
  date published: 2020-04-03
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97eb4be8ef2f38c2d8e8427562e466f7aecbb552c42df8986e3283e3bbaa98c9. 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/GBELX2007202.
  date published: 2026-07-31T22:27:44Z
audio: Violin Sonata in C Minor, Op. 1, No. 8: III. Allegro ma non presto
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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

Violin Sonata in E Flat Major, Op. 1, No. 6: I. Adagio
type: MusicRecording
duration: PT4M34S
duration ms: 274000
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Alana Youssefian
by artist: Le Bien-Aimé
in album: Brillance Indéniable: The Virtuoso Violin in the Court of Louis XV • Sonatas and Symphonies by Louis-Gabriel Guillemain
  type: MusicAlbum
  date published: 2020-04-03
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7d30948f753401b982f1811f55c91cfba019d8b8fb868e91209b21da627fd3. 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/GBELX2007206.
  date published: 2026-07-31T22:27:44Z
audio: Violin Sonata in E Flat Major, Op. 1, No. 6: I. Adagio
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.645
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.25
  additional property: Energy
    type: PropertyValue
    value: 0.065
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.838
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.003
  additional property: Liveness
    type: PropertyValue
    value: 0.181
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.135
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.857
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: GBELX2007206
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: 960473
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T22:27:44+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBELX2007206
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960473
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960473
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T22:27:44+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

I. Allegro moderato
type: MusicRecording
duration: PT3M43S
duration ms: 223400
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Nevermind
in album: Conversations
  type: MusicAlbum
  date published: 2016-03-18
genre: chamber-music
isrc code: FR50X1523506
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T06:09:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x65612da6837afb50384f698ea8e88fa1192bf058eb66a956efc14e90926b8a6b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1523506
additional property: OTSTimestamp
  type: PropertyValue
  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
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65612da6837afb50384f698ea8e88fa1192bf058eb66a956efc14e90926b8a6b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1523506.
  date published: 2026-07-08T03:53:27Z
audio: I. Allegro moderato
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.678
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.336
  additional property: Energy
    type: PropertyValue
    value: 0.225
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.896
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.105
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.333
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.07
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

I. Allegro
type: MusicRecording
duration: PT4M29S
duration ms: 269440
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Nevermind
in album: Conversations
  type: MusicAlbum
  date published: 2016-03-18
genre: chamber-music
isrc code: FR50X1523514
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T12:55:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0716cf27afb5c208fc54eec19ea95489b187607bec84ea259b74ecb1e19b9f1a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1523514
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
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: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0716cf27afb5c208fc54eec19ea95489b187607bec84ea259b74ecb1e19b9f1a. 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/FR50X1523514.
  date published: 2026-07-08T03:20:19Z
audio: I. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.445
  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: 0.31
  additional property: Energy
    type: PropertyValue
    value: 0.189
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.908
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.112
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.283
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.713
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

III. Presto
type: MusicRecording
duration: PT3M31S
duration ms: 211920
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Nevermind
in album: Conversations
  type: MusicAlbum
  date published: 2016-03-18
genre: chamber-music
isrc code: FR50X1523516
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T20:33:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa06da01abbb40de7b1f3fd258570134336732523f3480222c2fd262f3be6d4bb
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/FR50X1523516
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41+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
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957120
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:22:41+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06da01abbb40de7b1f3fd258570134336732523f3480222c2fd262f3be6d4bb. 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/FR50X1523516.
  date published: 2026-07-08T08:56:20Z
audio: III. Presto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.082
  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: 0.378
  additional property: Energy
    type: PropertyValue
    value: 0.191
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.95
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.029
  additional property: Liveness
    type: PropertyValue
    value: 0.11
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.376
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.87
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

II. Larghetto
type: MusicRecording
duration: PT5M1S
duration ms: 301706
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Nevermind
in album: Conversations
  type: MusicAlbum
  date published: 2016-03-18
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce31983e5d6822ea4046efd38eb7db0dffe03d57654621be10da4e7e01d70f2. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FR50X1523507.
  date published: 2026-07-31T17:29:52Z
audio: II. Larghetto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.619
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.098
  additional property: Energy
    type: PropertyValue
    value: 0.099
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.938
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.002
  additional property: Liveness
    type: PropertyValue
    value: 0.075
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.066
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.211
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: FR50X1523507
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: 960441
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T17:29:52+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1523507
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960441
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960441
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T17:29:52+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

III. Aria (Gratioso)
type: MusicRecording
duration: PT2M55S
duration ms: 175440
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Nevermind
in album: Conversations
  type: MusicAlbum
  date published: 2016-03-18
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa227119400a6c85cc79ff69d6792c6bc214e4b4b093bb05e57b1788471aea584. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/FR50X1523508.
  date published: 2026-07-30T07:51:46Z
audio: III. Aria (Gratioso)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 132.483
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.27
  additional property: Energy
    type: PropertyValue
    value: 0.127
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.925
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.065
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.297
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.838
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: FR50X1523508
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: 960223
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T07:51:46+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1523508
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960223
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960223
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T07:51:46+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

IV. Allegro
type: MusicRecording
duration: PT3M45S
duration ms: 225133
explicit: false
by artist: Louis-Gabriel Guillemain
by artist: Nevermind
in album: Conversations
  type: MusicAlbum
  date published: 2016-03-18
genre: chamber-music
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8d3afd45a8032103a0ad5a33ee0e407048706342be75525e5d36179a3014af. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/FR50X1523509.
  date published: 2026-07-31T09:09:19Z
audio: IV. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 89.456
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.388
  additional property: Energy
    type: PropertyValue
    value: 0.234
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.886
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.142
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.333
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.424
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: FR50X1523509
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: 960376
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T09:09:19+00:00
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Flute Quartet in B Minor, Op. 12, No. 2: I. Allegro (Version for string quartet)
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Sonata for Solo Violin in A Minor: IV. Variations
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Partita for Solo Violin No. 5 in G Minor: III. Saraband
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Partita for Solo Violin No. 5 in G Minor: IV. Rigodon
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Partita for Solo Violin No. 5 in G Minor: VII. Boure
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Partita for Solo Violin No. 5 in G Minor: VIII. Retirada
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Relaxing Classical
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Playback
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Birth of the Strings
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The Musicians' Table (The Perfection of Music, Masterpieces of the French Baroque, Vol. V)
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  subject of: OpenTimestamps Proof of Existence
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French Sonatas for Harpsichord and Violin
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The Perfection of Music: Masterpieces of the French Baroque
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Music from Five Centuries: 17th - 21st
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  subject of: OpenTimestamps Proof of Existence
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Guillemain: Second livre de sonates en quatuor, œuvre XVII
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Brillance Indéniable: The Virtuoso Violin in the Court of Louis XV • Sonatas and Symphonies by Louis-Gabriel Guillemain
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track: Symphony in G Major, Op. 14, No. 6: I. Allegro
track: Symphony in G Major, Op. 14, No. 6: II. Andantino
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Guillemain: Amusements
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Guillemain : Conversations galantes & amusantes
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Conversations Galantes Et Amusantes
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  subject of: OpenTimestamps Proof of Existence
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
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track: I. Allegro moderato
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track: I. Adagio
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:20:19Z

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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.057
  additional property: Loudness (dB)
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The Perfection of Music, Vol. 3: The Concert Spirituel
type: MusicAlbum
date published: 2007-01-01

Birth of the String Quartet, Vol. 2
type: MusicAlbum
date published: 2011-10-04
track: Flute Quartet in B Minor, Op. 12, No. 2: I. Allegro (Version for string quartet)

Birth of the Violin
type: MusicAlbum
date published: 2011-07-05

Entre Paris Et Versailles (Remastered 2023)
type: MusicAlbum
date published: 2023-06-30

La flûte de Monsieur Buffardin
type: MusicAlbum
date published: 2023-08-01