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genre: classical
popularity: 38
followers: 1806
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additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 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. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin 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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album: Mozart: The Piano Quartets
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  date published: 2023-08-11
album: Mozart: Violin Concertos, Vol. 2
  type: MusicAlbum
  date published: 2022-09-02
album: Mozart: Violin Concertos Nos. 3 & 4
  type: MusicAlbum
  date published: 2021-09-03
album: Brahms, Ligeti, Mozart, Schumann: Horn Trios
  type: MusicAlbum
  date published: 2024-06-07
album: Brahms & Busoni Violin Concertos
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  date published: 2024-03-01
album: Mozart: Violin Sonatas KV. 301, KV. 303, KV. 305, KV. 454
  type: MusicAlbum
  date published: 2022-02-25
album: Francesca Dego Plays Paganini's Violin
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  date published: 2021-03-01
album: Suite Italienne
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  date published: 2018-10-12
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    by artist: Francesca Dego
    by artist: Francesca Leonardi
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      date published: 2018-10-12
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    additional property: OTSVerifyInstructions
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-31T02:19:15Z
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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
      type: DigitalDocument
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      date published: 2026-07-02T03:55:08Z
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  track: Suite Italienne from "Pulcinella" - Arr. by Stravinsky & Dushkin: 1. Introduzione
  track: Suite Italienne from "Pulcinella" - Arr. by Stravinsky & Dushkin: 2. Serenata
  track: Suite Italienne from "Pulcinella" - Arr. by Stravinsky & Dushkin: 3. Tarantella
  track: 'Violetta', Fantasia for Violin and Piano from 'La Traviata'
album: Violin Concertos
album: Violin Sonatas Nos. 6, 7 And 10
album: Beethoven: Violin Sonatas Nos. 1, 2, 5 "Spring" And 8
album: Beethoven: Violin Sonatas Op. 12, Op. 23, Op. 47
album: 24 Capricci
album: Schumann: Duet from "Phantasiestücke", Op. 88
album: Mozart : Quintet, KV 407: Rondo
album: Brahms: Trio, Op. 40: IV. Finale
album: Busoni: Concerto in D Major, Op. 35a: II. Quasi andante
album: Brahms: Concerto in D Major, Op. 77: III. Allegro giocoso
album: Mozart: Piano Quartet No. 2 in E Flat Major, K. 493: III. Allegretto
album: Mozart: Piano Quartet No. 1 in G Minor, K. 478: III. Rondo
album: Mozart: Concerto No. 2 in D Major, K. 211: III. Rondeau. Allegro
album: Mozart: Concerto No. 1 in B-Flat Major, K.207: III. Presto
album: Mozart: Sonata, Op. 1 No. 5, KV. 305: I. Allegro di molto
album: Mozart: Sonata, Op. 7 No. 3, KV. 454: III. Allegretto
album: 'Figaro', Fantasia for Violin and Piano From 'Il Barbiere di Siviglia'
album: Nicola Campogrande: Danze della signorina Olivia
album: Grandes Clásicos De Violín - La Mejor Música Clásica
album: Brahms, Ligeti & Others: Horn Trios
album: Quartet: Music by Beethoven
album: Busoni: Violin Sonatas Nos. 1 & 2 & 4 Bagatelles
album: Busoni: 4 Bagatelles, Op. 28: III. Wiener Tanzweise
album: Busoni: Violin Sonata No.2 in E Minor, Op. 36a: II. Presto
album: Franck/Ravel

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Suite Italienne from "Pulcinella" - Arr. by Stravinsky & Dushkin: 1. Introduzione
type: MusicRecording
duration: PT2M16S
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explicit: false
by artist: Igor Stravinsky
by artist: Francesca Dego
by artist: Francesca Leonardi
in album: Suite Italienne
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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: 2026-07-31T15:20:15Z
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Suite Italienne from "Pulcinella" - Arr. by Stravinsky & Dushkin: 2. Serenata
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T23:51:35Z
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by artist: Francesca Leonardi
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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Violin Sonatas Nos. 6, 7 And 10
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Beethoven: Violin Sonatas Nos. 1, 2, 5 "Spring" And 8
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24 Capricci
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'Figaro', Fantasia for Violin and Piano From 'Il Barbiere di Siviglia'
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Nicola Campogrande: Danze della signorina Olivia
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track: Violin Concerto No. 2 in D Major, K. 211: I. Allegro moderato
track: Violin Concerto No. 2 in D Major, K. 211: II. Andante
track: Violin Concerto No. 2 in D Major, K. 211: III. Rondeau. Allegro
track: Violin Concerto No. 5 in A Major, K. 219 "Turkish": I. Allegro aperto
track: Violin Concerto No. 5 in A Major, K. 219 "Turkish": II. Adagio
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Violin Concerto No. 1 in B-Flat Major, K. 207: III. Presto
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Violin Concerto No. 2 in D Major, K. 211: I. Allegro moderato
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Violin Concerto No. 2 in D Major, K. 211: II. Andante
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  date published: 2026-07-08T03:20:19Z
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Violin Concerto No. 2 in D Major, K. 211: III. Rondeau. Allegro
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Violin Concerto No. 5 in A Major, K. 219 "Turkish": I. Allegro aperto
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T14:36:16Z
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Violin Concerto No. 5 in A Major, K. 219 "Turkish": III. Rondeau. Tempo di Menuetto
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additional property: 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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  date published: 2026-07-31T02:19:15Z
audio: Violin Concerto No. 5 in A Major, K. 219 "Turkish": III. Rondeau. Tempo di Menuetto
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Grandes Clásicos De Violín - La Mejor Música Clásica
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date published: 2023-10-06
track: 'Violetta', Fantasia for Violin and Piano from 'La Traviata'
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  by artist: Francesca Leonardi
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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
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c49f4ebf20c88bdc17e76d43d99a3ebfaa5e27e622a87327882a68da41bd30. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITUM71800831 — a six-check JSON result.
    date published: 2026-07-31T08:38:45Z
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track: Peace
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  by artist: Mona Spigseth
  by artist: Alex Robson
  by artist: Trondheim Soloists
  by artist: Sofi Jeannin
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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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe05e2e1217bf7893de86acddb484d7a64650011ca3d9769c9b3fe35ce701f95. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2100079 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
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  by artist: Mari Samuelsen
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  subject of: OpenTimestamps Proof of Existence
  audio: Fragment
track: La Campanella, Op. 7 - Arr. August Wilhelmj: arr. August Wilhelmj

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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dab42a065766bb92565a5c4e41e26d42301dee0a1397a6cbf3c232a984b4f38. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961900530 — a six-check JSON result.
date published: 2026-07-08T03:20:19Z

Fragment
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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La Campanella, Op. 7 - Arr. August Wilhelmj: arr. August Wilhelmj
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duration: PT6M9S
duration ms: 369986
explicit: false
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by artist: David Garrett
by artist: Alexander Markovich
in album: Grandes Clásicos De Violín - La Mejor Música Clásica
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isrc code: DEF059505660
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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: 2026-07-29T12:35:17Z
audio: La Campanella, Op. 7 - Arr. August Wilhelmj: arr. August Wilhelmj
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Brahms, Ligeti & Others: Horn Trios
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date published: 2024-06-07

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type: MusicAlbum
date published: 2025-01-21
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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
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9c013cc602647d427c43c788c36484c67c571e39674015d1dcb0416860a09f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059606181 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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track: String Quartet No. 1 in F, Op. 18 No. 1: 2. Adagio affettuoso ed appassionato
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date published: 2026-07-08T03:20:19Z

String Quartet No. 11 In F Minor, Op. 95 - "Serioso": 4. Larghetto espressivo - Allegretto agitato
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String Quartet No. 1 in F, Op. 18 No. 1: 2. Adagio affettuoso ed appassionato
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T18:48:12Z
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String Quartet In C Sharp Minor, Op. 131: 6. Adagio quasi un poco andante
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T13:04:34Z
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Violin Romance No. 2 in F Major, Op. 50
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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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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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  subject of: OpenTimestamps Proof of Existence
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track: 4 Bagatelles, Op. 28, BV 229: No. 3, Wiener Tanzweise
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  audio: 4 Bagatelles, Op. 28, BV 229: No. 3, Wiener Tanzweise

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date published: 2026-07-29T19:35:34Z

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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T02:19:15Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T20:45:02Z
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  audio: Concerto in D Major, Op. 35a: III. Allegro impetuoso
track: Concerto in D Major, Op. 77: I. Allegro non troppo
track: Concerto in D Major, Op. 77: II. Adagio
track: Concerto in D Major, Op. 77: III. Allegro giocoso

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date published: 2026-07-08T03:20:19Z

Concerto in D Major, Op. 35a: III. Allegro impetuoso
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Concerto in D Major, Op. 77: I. Allegro non troppo
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subject of: OpenTimestamps Proof of Existence
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subject of: OpenTimestamps Proof of Existence
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5714bf0d89bdce1a725e35204ca7349ee8460ea3b85170eccbaeaeb0350b14a8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2401506 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Concerto in D Major, Op. 77: III. Allegro giocoso
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Mozart: The Piano Quartets
type: MusicAlbum
date published: 2023-08-11
track: Piano Quartet No. 1 in G Minor, K. 478: I. Allegro
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  by artist: Francesca Dego
  by artist: Timothy Ridout
  by artist: Laura van der Heijden
  in album: Mozart: The Piano Quartets
    type: MusicAlbum
    date published: 2023-08-11
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
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    type: PropertyValue
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2304801
  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 0xb097014a399ec7c4677e972dda903f063c2fe975df580eea3424abca2429b603. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2304801 — a six-check JSON result.
    date published: 2026-07-31T02:19:15Z
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track: Piano Quartet No. 1 in G Minor, K. 478: II. Andante
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  by artist: Wolfgang Amadeus Mozart
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  by artist: Francesca Dego
  by artist: Timothy Ridout
  by artist: Laura van der Heijden
  in album: Mozart: The Piano Quartets
    type: MusicAlbum
    date published: 2023-08-11
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2304802
  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 0x306129ee996e297a112f94c1046eb19bfa792bd61af1ed0e3dc32c609313406f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2304802 — a six-check JSON result.
    date published: 2026-07-31T02:19:15Z
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track: Piano Quartet No. 1 in G Minor, K. 478: III. Rondo
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  by artist: Wolfgang Amadeus Mozart
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  by artist: Francesca Dego
  by artist: Timothy Ridout
  by artist: Laura van der Heijden
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  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
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  additional property: CopyrightID
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Piano Quartet No. 1 in G Minor, K. 478: III. Rondo
track: Piano Quartet No. 2 in E-Flat Major, K. 493: I. Allegro
track: Piano Quartet No. 2 in E-Flat Major, K. 493: II. Larghetto
track: Piano Quartet No. 2 in E-Flat Major, K. 493: III. Allegretto

Laura van der Heijden
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Mozart: The Piano Quartets
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date published: 2023-08-11

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CopyrightStatus
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CopyrightRegisteredAt
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CopyrightChainExplorerURL
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2304803

OTSTimestamp
type: PropertyValue
value: 2026-07-31T10:20:10Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed916734f21ecda7d4a102ea89ce5a2c146828849803fdfa821315c41cfc2d4. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2304803 — a six-check JSON result.
date published: 2026-07-31T10:20:10Z

Piano Quartet No. 1 in G Minor, K. 478: III. Rondo
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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Piano Quartet No. 2 in E-Flat Major, K. 493: I. Allegro
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duration: PT15M30S
duration ms: 930600
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Federico Colli
by artist: Francesca Dego
by artist: Timothy Ridout
by artist: Laura van der Heijden
in album: Mozart: The Piano Quartets
  type: MusicAlbum
  date published: 2023-08-11
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: GBLWD2304804
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  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 0x8751abc9953f97bd4112bf065199e53a93d9d1e0243f35764b282422051952a8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2304804 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Piano Quartet No. 2 in E-Flat Major, K. 493: I. Allegro
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duration: PT13M10S
duration ms: 790733
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Federico Colli
by artist: Francesca Dego
by artist: Timothy Ridout
by artist: Laura van der Heijden
in album: Mozart: The Piano Quartets
  type: MusicAlbum
  date published: 2023-08-11
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: GBLWD2304805
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x6178f3a6c80a2dda72c0672190e7f33fb208f9ff5ae843a75d6fa18b02c7352b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2304805 — a six-check JSON result.
  date published: 2026-07-31T23:51:35Z
audio: Piano Quartet No. 2 in E-Flat Major, K. 493: II. Larghetto
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Piano Quartet No. 2 in E-Flat Major, K. 493: III. Allegretto
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duration: PT9M14S
duration ms: 554000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Federico Colli
by artist: Francesca Dego
by artist: Timothy Ridout
by artist: Laura van der Heijden
in album: Mozart: The Piano Quartets
  type: MusicAlbum
  date published: 2023-08-11
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: GBLWD2304806
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  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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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T22:27:44Z
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  subject of: OpenTimestamps Proof of Existence
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date published: 2026-08-01T00:10:46Z

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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T22:27:44Z
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T23:51:35Z
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    date published: 2026-07-08T03:20:19Z
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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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  subject of: OpenTimestamps Proof of Existence
  audio: Violin Concerto No. 3 in G Major, K. 216: III. Rondeau. Allegro
track: Violin Concerto No. 4 in D Major, K. 218: I. Allegro
track: Violin Concerto No. 4 in D Major, K. 218: II. Andante cantabile
track: Violin Concerto No. 4 in D Major, K. 218: III. Rondeau. Andante grazioso
track: Violin Sonata in E Minor, Op. 1 No. 4, K. 304: I. Allegro
track: Violin Sonata in E Minor, Op. 1 No. 4, K. 304: II. Tempo di Menuetto

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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-29T21:09:47Z

Violin Concerto No. 3 in G Major, K. 216: III. Rondeau. Allegro
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Violin Concerto No. 4 in D Major, K. 218: I. Allegro
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by artist: Francesca Dego
by artist: Sir Roger Norrington
by artist: Royal Scottish National Orchestra
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genre: classical
genre: classical-era
genre: classical-piano
genre: opera
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additional property: OTSTimestamp
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
audio: Violin Concerto No. 4 in D Major, K. 218: I. Allegro
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Violin Concerto No. 4 in D Major, K. 218: II. Andante cantabile
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by artist: Wolfgang Amadeus Mozart
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by artist: Sir Roger Norrington
by artist: Royal Scottish National Orchestra
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  date published: 2021-09-03
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T21:51:49Z
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Violin Concerto No. 4 in D Major, K. 218: III. Rondeau. Andante grazioso
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duration ms: 429600
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by artist: Wolfgang Amadeus Mozart
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by artist: Sir Roger Norrington
by artist: Royal Scottish National Orchestra
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genre: classical
genre: classical-era
genre: classical-piano
genre: opera
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: 2026-07-08T03:20:19Z
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Violin Sonata in E Minor, Op. 1 No. 4, K. 304: I. Allegro
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genre: classical
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376b08097163defc90169f0336e5e8772004dbc4cac09ebce93997bf7b305c24. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2103307 — a six-check JSON result.
  date published: 2026-07-30T14:36:16Z
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Francesca Dego Plays Paganini's Violin
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Busoni: 4 Bagatelles, Op. 28: III. Wiener Tanzweise
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Busoni: Violin Sonata No.2 in E Minor, Op. 36a: II. Presto
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Franck/Ravel
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