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genre: classical
description: Stephen Preston may refer to: Stephen Preston (flautist) (born 1945), English flautist Stephen Preston (footballer) (1879–?), English footballer Stephen W. Preston (born 1957), American lawyer Stephe
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album: De La Barre: Pièces pour la flute traversière
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  track: Suite V du premier livre in D Minor: VI. Rondeau. Le Provençal
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-02T03:30:09Z
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  track: Suite IX du deuxième livre: Sonate. L'Inconnu in G Major
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      date published: 2026-07-31T20:22:46Z
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album: Vivaldi Masterworks
album: Handel: Chamber Music Vol.III - The Trio Sonatas Op.2
album: Handel: the Chamber Music Vol.1
album: Vivaldi Adagios
album: Vivaldi: Laudate peuri, Dominum, In furore iustissimae irae & String Concertos and Sonatas
album: Vivaldi: In Furore
album: Bach: Harpsichord Concertos, Vol. 4
album: Telemann: Double & Triple Concertos
album: Bach, J.S.: The Brandenburg Concertos
album: Academy of Ancient Music: Handel & Telemann
album: Bach, C.P.E.: Flute Concertos Wq 166 & 167
album: Vivaldi: L'Estro Armonico ; 6 Flute Concertos
album: A Golden Treasury of Historic Pianos
album: Weber: Flute Trio & Sonatas on Original Instruments
album: Flute Collection on Original Instruments
album: Locatelli: 12 Flute Sonatas, Op.2
album: 'Concerto alla Rustica' and other works - Vivaldi

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Vivaldi Masterworks
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date published: 2011-01-01

Handel: Chamber Music Vol.III - The Trio Sonatas Op.2
type: MusicAlbum
date published: 1991

Handel: the Chamber Music Vol.1
type: MusicAlbum
date published: 1991

Vivaldi Adagios
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track: 12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell'inventione" / Concerto No. 4 in F Minor for solo violin, RV297 "L'Inverno": II. Largo
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    date published: 2026-07-02T03:55:08Z
  audio: 12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell'inventione" / Concerto No. 4 in F Minor for solo violin, RV297 "L'Inverno": II. Largo
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track: Flute Concerto In G Minor, Op.10, No.2, RV439 - "La notte": 3. Largo
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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track: 12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell'inventione" / Concerto No. 1 in E Major for solo violin, RV269 "La Primavera": II. Largo
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  by artist: Konstanty Andrzej Kulka
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    type: MusicAlbum
    date published: 1988-01-01
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  audio: 12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell'inventione" / Concerto No. 1 in E Major for solo violin, RV269 "La Primavera": II. Largo
track: Concerto in F Major for 2 Oboes, Bassoon, 2 Horns & Violin, RV 574: 2. Grave
track: 12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell'inventione" / Concerto No. 2 in G Minor for solo violin, RV315 "L'Estate": II. Adagio - Presto
track: Concerto in F Major for 2 Oboes, 2 Horns & Violin, RV 569: 2. Grave
track: 12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell'inventione" / Concerto No. 3 in F Major for solo violin, RV293 "L'Autunno": II. Adagio molto
track: Concerto in F Major for 2 Horns, Strings & Continuo, RV 539: 2. Larghetto
track: Concerto for Lute, 2 Violins and Continuo in D major, RV 93: 2. Largo (Arr. for Guitar)
track: Bassoon Concerto in A Minor, RV 498: 2. Larghetto
track: Concerto for 2 Mandolins, Strings and Continuo in G major, RV 532: 2. Andante
track: 12 Violin Concertos, Op. 9 "La cetra" / Concerto No. 8 in D Minor, RV 238: 2. Largo
track: Concerto in D Minor for 2 Oboes, Strings & Continuo, RV 535 - Ed. Hogwood: 2. Largo
track: 12 Violin Concertos, Op. 9 "La cetra" / Concerto No. 9 in B-Flat Major fo 2 Violins, RV 530: 2. Largo e spiccato
track: Concerto for 2 Violins, 2 Cellos, Strings and Continuo in D, RV 564: 2. Largo
track: 12 Violin Concertos, Op. 9 "La cetra" / Concerto No. 10 in G Major, RV 300: 2. Largo cantabile
track: Flautino Concerto in C Major, RV 443 - Ed. Hogwood: 2. Largo
track: 12 Violin Concertos, Op. 9 "La cetra" / Concerto No. 11 in C Minor, RV 198a: 2. Adagio
track: 12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 12 in G Major, RV 298: 2. Largo
track: 12 Violin Concertos, Op. 9 "La cetra" / Concerto No. 5 in A Minor, RV 358: 2. Largo
track: 12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 1 in B-Flat Major, RV 383a: 2. Largo e Cantabile
track: 12 Violin Concertos, Op. 9 "La cetra" / Concerto No. 6 in A Major, RV 348: 2. Largo
track: 12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 2 in E Minor, RV 279: 2. Largo
track: 12 Violin Concertos, Op. 9 "La cetra" / Concerto No. 7 in B-Flat Major, RV 359: 2. Largo
track: 12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 3 in G Major, RV 301: 2. Largo
track: Concerto for Violin and Strings in E flat, Op. 8/5 , RV 253 "La tempesta di mare": 2. Largo
track: 12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 4 in A Minor, RV 357: 2. Grave e sempre piano
track: Concerto for Violin and Strings in C, Op. 8, No. 6, R.180 "Il pia cere": 2. Largo e cantabile
track: 12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 5 in A Major, RV 347: 2. Largo
track: Concerto for Violin and Strings in D minor , Op. 8/7 , RV 242: 2. Largo
track: 12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 6 in G Minor, RV 316a: 2. Largo
track: Concerto for Violin and Strings in G minor , Op. 8/8 , RV 332: 2. Largo
track: 12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 7 in G Major, RV 185: 1. Largo - Allegro
track: Concerto for Oboe and Strings in D minor , Op.8/9 , RV 454: 2. Largo
track: 12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 7 in G Major, RV 185: 3. Allegro
track: Concerto for Violin and Strings in B flat , Op. 8/10 , RV 362 "La caccia": 2. Adagio
track: 12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 9 in F Major, RV 284: 2. Largo
track: Concerto for Violin and Strings in D , Op. 8/11 , RV 210: 2. Largo
track: 12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 10 in C Minor, RV 196: 2. Adagio
track: Oboe Concerto in C Major, RV 449: 2. Largo
track: 12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 11 in D Major, RV 204: 2. Largo
track: Concerto for 2 Cellos, Strings and Continuo in G minor, RV 531: 2. Largo
track: Flute Concerto in A minor, RV 108 - Performed on recorder: 2. Largo
track: Concerto for 2 Flutes, Strings and Continuo in C major, RV 533: 2. Largo
track: Oboe Concerto in F Major, RV 456: 1. Largo
track: Flute Concerto in C Minor, RV 441: 2. Largo
track: Concerto for Viola d'amore, Lute, Strings and Continuo in D minor, RV 540: 2. Largo (Arr. for Guitar)
track: Sonata for Lute, Violin and Continuo, RV 82: 2. Larghetto (Arr. for Guitar)

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12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell'inventione" / Concerto No. 1 in E Major for solo violin, RV269 "La Primavera": II. Largo
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Concerto in F Major for 2 Oboes, Bassoon, 2 Horns & Violin, RV 574: 2. Grave
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12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell'inventione" / Concerto No. 2 in G Minor for solo violin, RV315 "L'Estate": II. Adagio - Presto
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Concerto in F Major for 2 Oboes, 2 Horns & Violin, RV 569: 2. Grave
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12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell'inventione" / Concerto No. 3 in F Major for solo violin, RV293 "L'Autunno": II. Adagio molto
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audio: 12 Violin Concertos, Op. 8 "Il cimento dell'armonia e dell'inventione" / Concerto No. 3 in F Major for solo violin, RV293 "L'Autunno": II. Adagio molto
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Concerto in F Major for 2 Horns, Strings & Continuo, RV 539: 2. Larghetto
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Concerto for Lute, 2 Violins and Continuo in D major, RV 93: 2. Largo (Arr. for Guitar)
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by artist: Eduardo Fernandez
by artist: English Chamber Orchestra
by artist: George Malcolm
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  date published: 1988-01-01
popularity: 7
genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T11:43:09Z
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Bassoon Concerto in A Minor, RV 498: 2. Larghetto
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by artist: Martin Gatt
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
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popularity: 7
genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T08:26:41Z
audio: Bassoon Concerto in A Minor, RV 498: 2. Larghetto
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Concerto for 2 Mandolins, Strings and Continuo in G major, RV 532: 2. Andante
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by artist: Tom Finucane
by artist: New London Consort
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popularity: 7
genre: classical
genre: early-music
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T01:32:48Z
audio: Concerto for 2 Mandolins, Strings and Continuo in G major, RV 532: 2. Andante
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12 Violin Concertos, Op. 9 "La cetra" / Concerto No. 8 in D Minor, RV 238: 2. Largo
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by artist: Iona Brown
by artist: Academy of St. Martin in the Fields
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
audio: 12 Violin Concertos, Op. 9 "La cetra" / Concerto No. 8 in D Minor, RV 238: 2. Largo
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Concerto in D Minor for 2 Oboes, Strings & Continuo, RV 535 - Ed. Hogwood: 2. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Concerto in D Minor for 2 Oboes, Strings & Continuo, RV 535 - Ed. Hogwood: 2. Largo
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12 Violin Concertos, Op. 9 "La cetra" / Concerto No. 9 in B-Flat Major fo 2 Violins, RV 530: 2. Largo e spiccato
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:51:48Z
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Concerto for 2 Violins, 2 Cellos, Strings and Continuo in D, RV 564: 2. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
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12 Violin Concertos, Op. 9 "La cetra" / Concerto No. 10 in G Major, RV 300: 2. Largo cantabile
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
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Flautino Concerto in C Major, RV 443 - Ed. Hogwood: 2. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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12 Violin Concertos, Op. 9 "La cetra" / Concerto No. 11 in C Minor, RV 198a: 2. Adagio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T15:42:38Z
audio: 12 Violin Concertos, Op. 9 "La cetra" / Concerto No. 11 in C Minor, RV 198a: 2. Adagio
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12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 12 in G Major, RV 298: 2. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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12 Violin Concertos, Op. 9 "La cetra" / Concerto No. 5 in A Minor, RV 358: 2. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T18:46:00Z
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12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 1 in B-Flat Major, RV 383a: 2. Largo e Cantabile
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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12 Violin Concertos, Op. 9 "La cetra" / Concerto No. 6 in A Major, RV 348: 2. Largo
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12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 2 in E Minor, RV 279: 2. Largo
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12 Violin Concertos, Op. 9 "La cetra" / Concerto No. 7 in B-Flat Major, RV 359: 2. Largo
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12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 3 in G Major, RV 301: 2. Largo
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Concerto for Violin and Strings in E flat, Op. 8/5 , RV 253 "La tempesta di mare": 2. Largo
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12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 4 in A Minor, RV 357: 2. Grave e sempre piano
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Concerto for Violin and Strings in C, Op. 8, No. 6, R.180 "Il pia cere": 2. Largo e cantabile
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T03:13:37Z
audio: Concerto for Violin and Strings in C, Op. 8, No. 6, R.180 "Il pia cere": 2. Largo e cantabile
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12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 5 in A Major, RV 347: 2. Largo
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by artist: Alan Loveday
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
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popularity: 5
genre: classical
genre: early-music
genre: baroque
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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: 2026-07-30T05:15:54Z
audio: 12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 5 in A Major, RV 347: 2. Largo
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Concerto for Violin and Strings in D minor , Op. 8/7 , RV 242: 2. Largo
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duration: PT2M12S
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by artist: Catherine Mackintosh
by artist: Academy of Ancient Music
by artist: Christopher Hogwood
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popularity: 3
genre: classical
genre: early-music
genre: baroque
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T17:23:26Z
audio: Concerto for Violin and Strings in D minor , Op. 8/7 , RV 242: 2. Largo
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12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 6 in G Minor, RV 316a: 2. Largo
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duration: PT3M59S
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by artist: Antonio Vivaldi
by artist: Carmel Kaine
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
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popularity: 4
genre: classical
genre: early-music
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: 12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 6 in G Minor, RV 316a: 2. Largo
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Concerto for Violin and Strings in G minor , Op. 8/8 , RV 332: 2. Largo
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duration: PT2M30S
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by artist: Academy of Ancient Music
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popularity: 2
genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T09:25:34Z
audio: Concerto for Violin and Strings in G minor , Op. 8/8 , RV 332: 2. Largo
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12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 7 in G Major, RV 185: 1. Largo - Allegro
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T04:47:22Z
audio: 12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 7 in G Major, RV 185: 1. Largo - Allegro
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Concerto for Oboe and Strings in D minor , Op.8/9 , RV 454: 2. Largo
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genre: classical
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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: Concerto for Oboe and Strings in D minor , Op.8/9 , RV 454: 2. Largo
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12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 7 in G Major, RV 185: 3. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T14:36:16Z
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Concerto for Violin and Strings in B flat , Op. 8/10 , RV 362 "La caccia": 2. Adagio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T07:28:30Z
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12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 9 in F Major, RV 284: 2. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T07:28:30Z
audio: 12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 9 in F Major, RV 284: 2. Largo
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Concerto for Violin and Strings in D , Op. 8/11 , RV 210: 2. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T21:35:24Z
audio: Concerto for Violin and Strings in D , Op. 8/11 , RV 210: 2. Largo
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12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 10 in C Minor, RV 196: 2. Adagio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T18:23:33Z
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Oboe Concerto in C Major, RV 449: 2. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 11 in D Major, RV 204: 2. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Concerto for 2 Cellos, Strings and Continuo in G minor, RV 531: 2. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
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Flute Concerto in A minor, RV 108 - Performed on recorder: 2. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Flute Concerto in A minor, RV 108 - Performed on recorder: 2. Largo
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Concerto for 2 Flutes, Strings and Continuo in C major, RV 533: 2. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T08:26:41Z
audio: Concerto for 2 Flutes, Strings and Continuo in C major, RV 533: 2. Largo
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Oboe Concerto in F Major, RV 456: 1. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Oboe Concerto in F Major, RV 456: 1. Largo
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Flute Concerto in C Minor, RV 441: 2. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Concerto for Viola d'amore, Lute, Strings and Continuo in D minor, RV 540: 2. Largo (Arr. for Guitar)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T14:36:16Z
audio: Concerto for Viola d'amore, Lute, Strings and Continuo in D minor, RV 540: 2. Largo (Arr. for Guitar)
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Vivaldi: Laudate peuri, Dominum, In furore iustissimae irae & String Concertos and Sonatas
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Vivaldi: In Furore
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Bach: Harpsichord Concertos, Vol. 4
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  audio: Quadro in B Flat Major, TWV. 43: 3. Allegro
track: Concerto for Recorder, Flute, Strings and Continuo in E minor, TWV. 52: 4. Presto

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Quadro in B Flat Major, TWV. 43: 3. Allegro
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Concerto for Recorder, Flute, Strings and Continuo in E minor, TWV. 52: 4. Presto
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track: Brandenburg Concerto No. 6 in B flat, BWV 1051: 1. --
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track: Brandenburg Concerto No. 5 in D Major, BWV 1050a: 1. Allegro
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Brandenburg Concerto No. 1 in F Major, BWV 1046a: 2. Adagio
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Brandenburg Concerto No. 1 in F Major, BWV 1046a: 3. Allegro
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Brandenburg Concerto No. 6 in B flat, BWV 1051: 3. Allegro
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Brandenburg Concerto No. 2 in F, BWV 1047: 1. (Allegro)
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Concerto in C Minor for Violin and Oboe, BWV 1060R: 1. Allegro
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  value: https://explorer.copyrightchains.com/tx/0xdc63ce71f4fe1e56b4a7d41487580617aa896f3f07fd939f42e03e61271428a8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960418
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960418
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078711422
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:20:15Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc63ce71f4fe1e56b4a7d41487580617aa896f3f07fd939f42e03e61271428a8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBF078711422.
  date published: 2026-07-31T15:20:15Z
audio: Concerto in C Minor for Violin and Oboe, BWV 1060R: 2. Adagio
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 108.878
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.096
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.716
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.022
  additional property: Liveness
    type: PropertyValue
    value: 0.119
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.138
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.789
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
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Brandenburg Concerto No. 2 in F, BWV 1047: 3. Allegro assai
type: MusicRecording
duration: PT2M48S
duration ms: 168493
explicit: false
by artist: Johann Sebastian Bach
by artist: Friedemann Immer
by artist: Catherine Mackintosh
by artist: Michel Piguet
by artist: Ku Ebbinge
by artist: Academy of Ancient Music
by artist: Christopher Hogwood
in album: Bach, J.S.: The Brandenburg Concertos
  type: MusicAlbum
  date published: 1997-01-01
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: GBF078400523
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T09:25:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x45dacd22728f81d0c4297d12d4e13d2889caca5daccbefecebc837bde10581b1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960381
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960381
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078400523
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T09:50:11Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dacd22728f81d0c4297d12d4e13d2889caca5daccbefecebc837bde10581b1. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078400523.
  date published: 2026-07-31T09:50:11Z
audio: Brandenburg Concerto No. 2 in F, BWV 1047: 3. Allegro assai
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.324
  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: 0.624
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
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  additional property: Instrumentalness
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    value: 0.853
  additional property: Liveness
    type: PropertyValue
    value: 0.289
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.923
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.752
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Concerto in C Minor for Violin and Oboe, BWV 1060R: 3. Allegro
type: MusicRecording
duration: PT3M22S
duration ms: 202160
explicit: false
by artist: Johann Sebastian Bach
by artist: Catherine Mackintosh
by artist: Stephen Hammer
by artist: Academy of Ancient Music
by artist: Christopher Hogwood
in album: Bach, J.S.: The Brandenburg Concertos
  type: MusicAlbum
  date published: 1997-01-01
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: GBF078711423
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T14:40:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1bdbea0d8aeee72e50f0b379f10914fc57f210b6009072f68d7f4d23422034ca
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/GBF078711423
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 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdbea0d8aeee72e50f0b379f10914fc57f210b6009072f68d7f4d23422034ca. 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/GBF078711423.
  date published: 2026-07-08T03:20:19Z
audio: Concerto in C Minor for Violin and Oboe, BWV 1060R: 3. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.437
  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: 0.552
  additional property: Energy
    type: PropertyValue
    value: 0.325
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.003
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.72
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.276
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Brandenburg Concerto No. 3 in G, BWV 1048: 1. (Allegro)
type: MusicRecording
duration: PT5M44S
duration ms: 344666
explicit: false
by artist: Johann Sebastian Bach
by artist: Academy of Ancient Music
by artist: Christopher Hogwood
in album: Bach, J.S.: The Brandenburg Concertos
  type: MusicAlbum
  date published: 1997-01-01
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: GBF078400531
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T05:35:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x109891f910a348aaef39f2d850690143de909c17c8a9b8717e1bc73561fb7bee
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960354
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960354
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078400531
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T05:48:18Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109891f910a348aaef39f2d850690143de909c17c8a9b8717e1bc73561fb7bee. 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/GBF078400531.
  date published: 2026-07-31T05:48:18Z
audio: Brandenburg Concerto No. 3 in G, BWV 1048: 1. (Allegro)
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
    value: 1
  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: 0.59
  additional property: Energy
    type: PropertyValue
    value: 0.384
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.833
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.145
  additional property: Liveness
    type: PropertyValue
    value: 0.265
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.898
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.564
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Concerto for 2 Harpsichords, Strings, and Continuo in C minor, BWV 1062: 1. (Allegro)
type: MusicRecording
duration: PT3M47S
duration ms: 227653
explicit: false
by artist: Johann Sebastian Bach
by artist: Christophe Rousset
by artist: Christopher Hogwood
by artist: Academy of Ancient Music
in album: Bach, J.S.: The Brandenburg Concertos
  type: MusicAlbum
  date published: 1997-01-01
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: GBF078711441
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T23:28:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x54e4aedd9e1a6f2d7aef79cfaab09361bcae983e8b0de32a153eaeea8a56bced
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960481
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960481
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078711441
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T23:51:35Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e4aedd9e1a6f2d7aef79cfaab09361bcae983e8b0de32a153eaeea8a56bced. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078711441.
  date published: 2026-07-31T23:51:35Z
audio: Concerto for 2 Harpsichords, Strings, and Continuo in C minor, BWV 1062: 1. (Allegro)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 115.33
  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: 0.496
  additional property: Energy
    type: PropertyValue
    value: 0.31
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.721
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.312
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.857
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.4
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Concerto for 2 Harpsichords, Strings, and Continuo in C minor, BWV 1062: 2. Andante e piano
type: MusicRecording
duration: PT6M46S
duration ms: 406173
explicit: false
by artist: Johann Sebastian Bach
by artist: Christophe Rousset
by artist: Academy of Ancient Music
by artist: Christopher Hogwood
in album: Bach, J.S.: The Brandenburg Concertos
  type: MusicAlbum
  date published: 1997-01-01
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: GBF078711442
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7acb144ca21a6bc02fb5ebcee1a7056c7346ca272e6a395205890d39be638096
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960397
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960397
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078711442
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T12:24:41Z
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 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acb144ca21a6bc02fb5ebcee1a7056c7346ca272e6a395205890d39be638096. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBF078711442.
  date published: 2026-07-31T12:24:41Z
audio: Concerto for 2 Harpsichords, Strings, and Continuo in C minor, BWV 1062: 2. Andante e piano
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 170.195
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.25
  additional property: Energy
    type: PropertyValue
    value: 0.035
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.574
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.247
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.039
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Brandenburg Concerto No. 3 in G, BWV 1048: 3. Allegro
type: MusicRecording
duration: PT4M33S
duration ms: 273840
explicit: false
by artist: Johann Sebastian Bach
by artist: Academy of Ancient Music
by artist: Christopher Hogwood
in album: Bach, J.S.: The Brandenburg Concertos
  type: MusicAlbum
  date published: 1997-01-01
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: GBF078400533
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T08:15:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2a6507ae083e5c3d4280d8d8b4d5b66235150411589a19f13eeb637129b1c3b2
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/GBF078400533
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 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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  date published: 2026-07-08T03:20:19Z
audio: Brandenburg Concerto No. 3 in G, BWV 1048: 3. Allegro
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Concerto for 2 Harpsichords, Strings, and Continuo in C minor, BWV 1062: 3. Allegro assai
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duration: PT4M33S
duration ms: 273826
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by artist: Johann Sebastian Bach
by artist: Christophe Rousset
by artist: Christopher Hogwood
by artist: Academy of Ancient Music
in album: Bach, J.S.: The Brandenburg Concertos
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  date published: 1997-01-01
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Concerto for 2 Harpsichords, Strings, and Continuo in C minor, BWV 1062: 3. Allegro assai
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Brandenburg Concerto No. 4 in G, BWV 1049: 1. Allegro
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duration: PT6M52S
duration ms: 412666
explicit: false
by artist: Johann Sebastian Bach
by artist: Michel Piguet
by artist: Sabine Weill
by artist: Jaap Schröder
by artist: Academy of Ancient Music
by artist: Christopher Hogwood
in album: Bach, J.S.: The Brandenburg Concertos
  type: MusicAlbum
  date published: 1997-01-01
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T04:14:58Z
audio: Brandenburg Concerto No. 4 in G, BWV 1049: 1. Allegro
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Concerto for 3 Harpsichords, Strings & Continuo No. 2 in C Major, BWV 1064R - Arr. Hogwood for 3 Violins: 1. (Allegro)
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duration: PT5M42S
duration ms: 342506
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by artist: Johann Sebastian Bach
by artist: Christopher Hirons
by artist: Monica Huggett
by artist: Catherine Mackintosh
by artist: Academy of Ancient Music
by artist: Christopher Hogwood
in album: Bach, J.S.: The Brandenburg Concertos
  type: MusicAlbum
  date published: 1997-01-01
genre: classical
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genre: early-music
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Concerto for 3 Harpsichords, Strings & Continuo No. 2 in C Major, BWV 1064R - Arr. Hogwood for 3 Violins: 1. (Allegro)
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Brandenburg Concerto No. 4 in G, BWV 1049: 2. Andante
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duration: PT3M18S
duration ms: 198826
explicit: false
by artist: Johann Sebastian Bach
by artist: Michel Piguet
by artist: Sabine Weill
by artist: Jaap Schröder
by artist: Academy of Ancient Music
by artist: Christopher Hogwood
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  date published: 1997-01-01
genre: classical
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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 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T12:24:41Z
audio: Brandenburg Concerto No. 4 in G, BWV 1049: 2. Andante
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Concerto for 3 Harpsichords, Strings & Continuo No. 2 in C Major, BWV 1064R - Arr. Hogwood for 3 Violins: 2. Adagio
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duration: PT5M27S
duration ms: 327653
explicit: false
by artist: Johann Sebastian Bach
by artist: Christopher Hirons
by artist: Monica Huggett
by artist: Catherine Mackintosh
by artist: Academy of Ancient Music
by artist: Christopher Hogwood
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  date published: 1997-01-01
genre: classical
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genre: early-music
genre: baroque
genre: chamber-music
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T05:17:02Z
audio: Concerto for 3 Harpsichords, Strings & Continuo No. 2 in C Major, BWV 1064R - Arr. Hogwood for 3 Violins: 2. Adagio
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Brandenburg Concerto No. 4 in G, BWV 1049: 3. Presto
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duration: PT4M35S
duration ms: 275840
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by artist: Academy of Ancient Music
by artist: Christopher Hogwood
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  date published: 1997-01-01
genre: classical
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genre: early-music
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T12:24:41Z
audio: Brandenburg Concerto No. 4 in G, BWV 1049: 3. Presto
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Brandenburg Concerto No. 5 in D Major, BWV 1050a: 2. Affetuoso
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subject of: OpenTimestamps Proof of Existence
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track: Quadro in B Flat Major, TWV. 43: 1. Spirituoso
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track: Quadro in B Flat Major, TWV. 43: 2. Grave

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Quadro in B Flat Major, TWV. 43: 1. Spirituoso
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Bach, C.P.E.: Flute Concertos Wq 166 & 167
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Vivaldi: L'Estro Armonico ; 6 Flute Concertos
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track: Flute Concerto in F Major, RV 433 "La tempesta di mare": 3. Presto
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 4 in E Minor for 4 Violins, RV 550: 3. Adagio
track: Flute Concerto in G Minor, RV 439 "La notte": 1. Largo
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 4 in E Minor for 4 Violins, RV 550: 4. Allegro
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track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 5 in A Major for 2 Violins, RV 519: 1. Allegro
track: Flute Concerto in G Minor, RV 439 "La notte": 3. Largo
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 5 in A Major for 2 Violins, RV 519: 2. Largo
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track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 6 in A Minor for Violin, RV 356: 1. Allegro
track: Flute Concerto in D Major, RV 428 "Il Gardellino": 1. Allegro
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 6 in A Minor for Violin, RV 356: 2. Largo
track: Flute Concerto in D Major, RV 428 "Il Gardellino": 2. Cantabile
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 6 in A Minor for Violin, RV 356: 3. Presto
track: Flute Concerto in D Major, RV 428 "Il Gardellino": 3. Allegro
track: Flute Concerto in G Major, RV 435: 1. Allegro
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 7 in F Major for 4 Violins, RV 567: 2. Adagio
track: Flute Concerto in G Major, RV 435: 2. Largo
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 7 in F Major for 4 Violins, RV 567: 3. Allegro
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 7 in F Major for 4 Violins, RV 567: 4. Adagio
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 7 in F Major for 4 Violins, RV 567: 5. Allegro
track: Flute Concerto in F Major, RV 434: 2. Largo
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 8 in A Minor for 2 Violins, RV 522: 1. Allegro
track: Flute Concerto in F Major, RV 434: 3. Allegro
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 8 in A Minor for 2 Violins, RV 522: 2. Larghetto e spirituoso
track: Flute Concerto in G Major, RV 437: 1. Allegro
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 8 in A Minor for 2 Violins, RV 522: 3. Allegro
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 9 in D Major for Violin, RV 230: 1. Allegro
track: Flute Concerto in G Major, RV 437: 3. Allegro
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 9 in D Major for Violin, RV 230: 2. Larghetto
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 1 in D Major for 4 Violins, RV 549: 1. Allegro
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 1 in D Major for 4 Violins, RV 549: 2. Largo e Spiccato
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 1 in D Major for 4 Violins, RV 549: 3. Allegro
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 2 in G Minor for 2 Violins and Cello, RV 578: 1. Adagio e Spiccato
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 2 in G Minor for 2 Violins and Cello, RV 578: 2. Allegro
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 2 in G Minor for 2 Violins and Cello, RV 578: 3. Larghetto
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 2 in G Minor for 2 Violins and Cello, RV 578: 4. Allegro
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 3 in G Major for Solo Violin, RV 310: 1. Allegro
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 3 in G Major for Solo Violin, RV 310: 2. Largo
track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 3 in G Major for Solo Violin, RV 310: 3. Allegro

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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 4 in E Minor for 4 Violins, RV 550: 4. Allegro
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Flute Concerto in G Minor, RV 439 "La notte": 2. Presto (Fantasmi)
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 5 in A Major for 2 Violins, RV 519: 1. Allegro
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Flute Concerto in G Minor, RV 439 "La notte": 3. Largo
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 5 in A Major for 2 Violins, RV 519: 2. Largo
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Flute Concerto in G Minor, RV 439 "La notte": 4. Largo (Il Sonno)
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 5 in A Major for 2 Violins, RV 519: 3. Allegro
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  date published: 2026-08-01T01:44:32Z
audio: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 5 in A Major for 2 Violins, RV 519: 3. Allegro
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Flute Concerto in G Minor, RV 439 "La notte": 5. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T21:09:47Z
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 6 in A Minor for Violin, RV 356: 1. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
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Flute Concerto in D Major, RV 428 "Il Gardellino": 1. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:59:18Z
audio: Flute Concerto in D Major, RV 428 "Il Gardellino": 1. Allegro
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 6 in A Minor for Violin, RV 356: 2. Largo
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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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Flute Concerto in D Major, RV 428 "Il Gardellino": 2. Cantabile
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subject of: OpenTimestamps Proof of Existence
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 6 in A Minor for Violin, RV 356: 3. Presto
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subject of: OpenTimestamps Proof of Existence
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Flute Concerto in D Major, RV 428 "Il Gardellino": 3. Allegro
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audio: Flute Concerto in D Major, RV 428 "Il Gardellino": 3. Allegro
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Flute Concerto in G Major, RV 435: 1. Allegro
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subject of: OpenTimestamps Proof of Existence
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 7 in F Major for 4 Violins, RV 567: 2. Adagio
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  date published: 2026-07-31T00:26:26Z
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Flute Concerto in G Major, RV 435: 2. Largo
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audio: Flute Concerto in G Major, RV 435: 2. Largo
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 7 in F Major for 4 Violins, RV 567: 3. Allegro
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audio: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 7 in F Major for 4 Violins, RV 567: 3. Allegro
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 7 in F Major for 4 Violins, RV 567: 4. Adagio
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 7 in F Major for 4 Violins, RV 567: 5. Allegro
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Flute Concerto in F Major, RV 434: 2. Largo
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 8 in A Minor for 2 Violins, RV 522: 1. Allegro
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Flute Concerto in F Major, RV 434: 3. Allegro
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 8 in A Minor for 2 Violins, RV 522: 2. Larghetto e spirituoso
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Flute Concerto in G Major, RV 437: 1. Allegro
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 8 in A Minor for 2 Violins, RV 522: 3. Allegro
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-08T03:20:19Z
audio: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 8 in A Minor for 2 Violins, RV 522: 3. Allegro
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 9 in D Major for Violin, RV 230: 1. Allegro
type: MusicRecording
duration: PT2M5S
duration ms: 125133
explicit: false
by artist: Antonio Vivaldi
by artist: John Holloway
by artist: Academy of Ancient Music
by artist: Christopher Hogwood
in album: Vivaldi: L'Estro Armonico ; 6 Flute Concertos
  type: MusicAlbum
  date published: 1998-01-01
popularity: 3
genre: classical
genre: early-music
genre: baroque
genre: concerto
isrc code: GBF078030729
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T10:06:30Z
audio: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 9 in D Major for Violin, RV 230: 1. Allegro
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Flute Concerto in G Major, RV 437: 3. Allegro
type: MusicRecording
duration: PT2M24S
duration ms: 144000
explicit: false
by artist: Antonio Vivaldi
by artist: Stephen Preston
by artist: Academy of Ancient Music
by artist: Christopher Hogwood
in album: Vivaldi: L'Estro Armonico ; 6 Flute Concertos
  type: MusicAlbum
  date published: 1998-01-01
popularity: 1
genre: classical
genre: early-music
genre: baroque
genre: concerto
isrc code: GBF077640220
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb3275c6173d623cdd9e49ae1ddff011530c4920d4b792a75b465372772302c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077640220.
  date published: 2026-07-31T23:30:38Z
audio: Flute Concerto in G Major, RV 437: 3. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 9 in D Major for Violin, RV 230: 2. Larghetto
type: MusicRecording
duration: PT2M31S
duration ms: 151933
explicit: false
by artist: Antonio Vivaldi
by artist: John Holloway
by artist: Academy of Ancient Music
by artist: Christopher Hogwood
in album: Vivaldi: L'Estro Armonico ; 6 Flute Concertos
  type: MusicAlbum
  date published: 1998-01-01
popularity: 3
genre: classical
genre: early-music
genre: baroque
genre: concerto
isrc code: GBF078030730
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
  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 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 9 in D Major for Violin, RV 230: 2. Larghetto
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 1 in D Major for 4 Violins, RV 549: 1. Allegro
type: MusicRecording
duration: PT2M52S
duration ms: 172360
explicit: false
by artist: Antonio Vivaldi
by artist: Elizabeth Wilcock
by artist: John Holloway
by artist: Monica Huggett
by artist: Catherine Mackintosh
by artist: Academy of Ancient Music
by artist: Christopher Hogwood
in album: Vivaldi: L'Estro Armonico ; 6 Flute Concertos
  type: MusicAlbum
  date published: 1998-01-01
popularity: 3
genre: classical
genre: early-music
genre: baroque
genre: concerto
isrc code: GBF078030701
additional property: CopyrightID
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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 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 1 in D Major for 4 Violins, RV 549: 1. Allegro
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  additional property: Valence (Positivity)
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 1 in D Major for 4 Violins, RV 549: 2. Largo e Spiccato
type: MusicRecording
duration: PT2M25S
duration ms: 145066
explicit: false
by artist: Antonio Vivaldi
by artist: Elizabeth Wilcock
by artist: John Holloway
by artist: Monica Huggett
by artist: Catherine Mackintosh
by artist: Academy of Ancient Music
by artist: Christopher Hogwood
in album: Vivaldi: L'Estro Armonico ; 6 Flute Concertos
  type: MusicAlbum
  date published: 1998-01-01
popularity: 4
genre: classical
genre: early-music
genre: baroque
genre: concerto
isrc code: GBF078030702
additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  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 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-08T03:20:19Z
audio: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 1 in D Major for 4 Violins, RV 549: 2. Largo e Spiccato
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 1 in D Major for 4 Violins, RV 549: 3. Allegro
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duration: PT2M12S
duration ms: 132440
explicit: false
by artist: Antonio Vivaldi
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by artist: John Holloway
by artist: Monica Huggett
by artist: Catherine Mackintosh
by artist: Academy of Ancient Music
by artist: Christopher Hogwood
in album: Vivaldi: L'Estro Armonico ; 6 Flute Concertos
  type: MusicAlbum
  date published: 1998-01-01
popularity: 4
genre: classical
genre: early-music
genre: baroque
genre: concerto
isrc code: GBF078030703
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
  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 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bdf420ae0d126ec4836ddea9ec2dab297f8c6c7f78a4eec39af08cee17b541. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078030703.
  date published: 2026-07-30T17:41:38Z
audio: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 1 in D Major for 4 Violins, RV 549: 3. Allegro
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  date published: 2026-07-02T03:55:08Z
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 2 in G Minor for 2 Violins and Cello, RV 578: 2. Allegro
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 2 in G Minor for 2 Violins and Cello, RV 578: 3. Larghetto
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 2 in G Minor for 2 Violins and Cello, RV 578: 4. Allegro
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  date published: 2026-07-02T03:55:08Z
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 3 in G Major for Solo Violin, RV 310: 1. Allegro
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 3 in G Major for Solo Violin, RV 310: 2. Largo
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 3 in G Major for Solo Violin, RV 310: 3. Allegro
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A Golden Treasury of Historic Pianos
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track: Concerto Grosso In D Minor, Op. 3/11, RV 565: I. Allegro
track: Concerto for Lute, 2 Violins and Continuo in D major, RV 93: 3. Allegro
track: Concerto for Guitar and Strings in G minor, Op. 10, No. 2, R.439 - Arr. from Flute Concerto in G minor, Op. 10 No. 2, R.439: 2. Fantasmi (Presto)
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track: Concerto for Strings in D Minor, RV 129 "Madrigalesco": III. [Allegro]
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track: Concerto for Strings and Continuo in G major, RV 151 "Concerto alla Rustica": 2. Adagio
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track: Concerto for Strings and Continuo in B flat, R.163 "Conca": 2. Andante (molto)
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track: 12 Violin Concertos, Op. 4 - "La stravaganza" - Concerto No. 8 in D minor, RV 249: 1b. Adagio
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Concerto for Guitar and Strings in G minor, Op. 10, No. 2, R.439 - Arr. from Flute Concerto in G minor, Op. 10 No. 2, R.439: 2. Fantasmi (Presto)
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Concerto for Strings and Continuo in G major, RV 145: 3. Presto
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Trio Sonata in E minor for 2 Violins and Continuo, Op. 1/2 , RV 6 7: 4. Gavotta (Allegro)
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Concerto for Strings and Continuo in B minor, R.168: 3. Allegro
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Trio Sonata in G minor for 2 Violins and Continuo, Op. 1/1 , RV 7 3: 5. Gavotte (Allegro)
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Sonata in E minor for Violin and Continuo, Op. 2/9 , RV 16: 4. Gavotta (Presto)
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Concerto for Strings and Continuo in D major, RV 121: 2. Adagio
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12 Concertos, Op. 3 "L'estro armonico", Concerto No. 10 in B Minor for 4 Violins and Cello (Arr. P. Romero for 4 Guitars): IIa. Largo
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Concerto in G Minor for Flute & Strings, Op.10, No.2, RV439 - "La notte": 4. Presto
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subject of: OpenTimestamps Proof of Existence
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Concerto for Strings in D Minor, RV 129 "Madrigalesco": III. [Allegro]
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:20:33Z
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Concerto for Strings and Continuo in D minor, RV 127: 3. Allegro
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Concerto for Strings and Continuo in G major, RV 151 "Concerto alla Rustica": 2. Adagio
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Concerto for Strings and Continuo in F minor, RV 143: 2. Adagio
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Concerto in G Minor for Flute & Strings, Op.10, No.2, RV439 - "La notte": 2. Fantasmi (Presto)
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Concerto for Strings and Continuo in B flat, R.163 "Conca": 2. Andante (molto)
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Concerto for Strings and Continuo in D minor, R.127: 3. Allegro
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12 Violin Concertos, Op. 4 - "La stravaganza" - Concerto No. 8 in D minor, RV 249: 1b. Adagio
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Flute Concerto in G Minor, RV 439 "La notte": 3. Largo
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Trio Sonata in E flat for 2 Violins and Continuo, Op. 1/7 , RV 65: 4. Giga (Presto)
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Flute Concerto in G Minor, RV 439 "La notte": III. Largo
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