Vertavo String Quartet
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genre: chamber music
description: Vertavo String Quartet is a Norwegian group founded in Hamar in 1984. The four women forming the quartet are Øyvor Volle, Annabelle Meare, Berit Cardas, and Bjørg Lewis. They appeared on the album A P
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Clarinet Quintet in A Major, K. 581: I. Allegro
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Clarinet Quintet in A Major, K. 581: IV. Allegretto con variazioni
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audio: Clarinet Quintet in A Major, K. 581: IV. Allegretto con variazioni
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Clarinet Quintet in A Major, K. 581: II. Larghetto
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Clarinet Quintet in A Major, K. 581: III. Menuetto - Trio I - Trio II
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audio: Clarinet Quintet in A Major, K. 581: III. Menuetto - Trio I - Trio II
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additional property: OTSVerifyInstructions
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Pascal
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duration ms: 196586
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by artist: Hot Club De Norvege
by artist: Jon Larsen
by artist: Vertavo String Quartet
by artist: Ulf Wakenius
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additional property: OTSVerifyInstructions
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  date published: 2026-07-08T08:56:20Z
audio: Pascal
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Introduction et allegro, M. 46
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by artist: Maurice Ravel
by artist: Per Flemstrom
by artist: Fredrik Fors
by artist: Ellen Bødtker
by artist: Sjur Bjaerke
by artist: Vertavo String Quartet
in album: French Music for Harp & Strings
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genre: classical
genre: impressionism
genre: neoclassicism
genre: post-romantic-era
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T13:50:38Z
audio: Introduction et allegro, M. 46
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2 Danses, "Danses sacree et profane" (version for harp and solo strings): Danse profane
type: MusicRecording
duration: PT5M17S
duration ms: 317373
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by artist: Claude Debussy
by artist: Ellen Sejersted Bødtker
by artist: Vertavo String Quartet
in album: Chill With Debussy
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genre: classical
genre: impressionism
genre: post-romantic-era
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T09:09:19Z
audio: 2 Danses, "Danses sacree et profane" (version for harp and solo strings): Danse profane
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additional property: OTSVerifyInstructions
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Valence (Positivity)
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Loudness (dB)
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Key Name
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Caravan
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duration: PT3M0S
duration ms: 180040
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by artist: Jimmy Rosenberg
by artist: Ola Kvernberg
in album: The Best of Hot Club Records
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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: 2026-07-08T08:56:20Z
audio: Caravan
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Rose Room
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duration: PT5M6S
duration ms: 306426
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by artist: Stian Carstensen
by artist: Jimmy Rosenberg
in album: The Best of Hot Club Records
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genre: swedish-ballads
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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: 2026-07-07T18:39:05Z
audio: Rose Room
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Three Compositions. The Finnskogen Exhibition Norway (Live Recordings)
type: MusicAlbum
date published: 2021-01-29

Mozart: Quintets
type: MusicAlbum
date published: 2014-09-02

Musikk fra Film og TV
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date published: 1985
track: Nattseilere
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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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Verdi - Sibelius
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Les Vendredis
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Vertavo
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T05:09:12Z
  audio: Gymnopedie No. 1 (Arr. for Harp)
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track: 6 Pieces for Harp Solo: No. 2, Scherzetto
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  by artist: Ellen Bødtker
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
  audio: 6 Pieces for Harp Solo: No. 2, Scherzetto
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track: Impromptu-Caprice, Op. 9
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  by artist: Ellen Bødtker
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  subject of: OpenTimestamps Proof of Existence
  audio: Impromptu-Caprice, Op. 9
track: Introduction et allegro, M. 46

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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf906f92caa84ea0fdd7f6d56f21edd6a81edcec145b8858a267109919e30be34. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190054008.
date published: 2026-07-07T11:43:09Z

Impromptu-Caprice, Op. 9
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Chill With Debussy
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  by artist: François-Joël Thiollier
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T03:53:27Z
  audio: Suite bergamasque: Suite Bergamasque: Clair de lune
    type: AudioObject
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track: 2 Arabesques: Arabesque No. 1
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
  audio: 2 Arabesques: Arabesque No. 1
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track: Children's Corner (arr. A. Caplet for orchestra): Serenade for the Doll
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  by artist: Claude Debussy
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  by artist: Leif Segerstam
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  subject of: OpenTimestamps Proof of Existence
  audio: Children's Corner (arr. A. Caplet for orchestra): Serenade for the Doll
track: Children's Corner (arr. A. Caplet for orchestra): The Snow is Dancing
track: Preludes, Book 1: No. 8: La fille aux cheveux de lin
track: Estampes: Pagodes
track: 2 Danses, "Danses sacree et profane" (version for harp and solo strings): Danse profane

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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602b123d759c3f13205746b25dc8c7af0869fe4aced1460546759252daa8ad3e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199524703.
date published: 2026-07-08T03:53:27Z

Children's Corner (arr. A. Caplet for orchestra): Serenade for the Doll
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Children's Corner (arr. A. Caplet for orchestra): The Snow is Dancing
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duration: PT2M44S
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by artist: Claude Debussy
by artist: Rheinland-Pfalz State Philharmonic Orchestra
by artist: Leif Segerstam
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Children's Corner (arr. A. Caplet for orchestra): The Snow is Dancing
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Peaceful Debussy
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Lindeman Light
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Debussy (The Very Best Of)
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The Other Side Of Sunday
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Sommer i P2 | I stjernestøvets alder
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Art & Music: Renoir - Music of His Time
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