Laurent Martin
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genre: chamber music
genre: classical piano
description: thumb| Laurent Martin (born 12 September 1945) is a French classical pianist. Biography After piano studies with Geneviève Zaigue in Troyes, Joseph Benvenuti at the Conservatoire de Paris, Germain
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album: Déodat de Séverac: La vasque aux colombes
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album: Compositrices au piano
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album: Mussorgsky: Pictures at an Exhibition
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  date published: 2021-06-04
album: Duos romantiques français
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album: Viardot: Intégrale des mélodies russes, Vol. 1 (Pouchkine & Tourgueniev)
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album: De Montgeroult, Chaminade, De Polignac, Selva, Bonis: Compositrices d'exception
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album: Bonis: Le diamant noir (Danses)
album: Tchaïkovski: Romances et Sérénades
album: Alkan: Ressouvenir (Works for piano)
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album: Schumann: Sonates pour violon et piano
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Exaltación (Piano español del siglo XX)
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track: Iberia, libro III: El albaicín
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track: 5 Danzas gitanas, Op. 55: V. Sacromonte
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track: Waltz No. 6, D. 365
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  by artist: Laurent Martin
  in album: Schubert: Darkness and Light
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  genre: classical-piano
  genre: chamber-music
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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: 2026-07-02T03:30:09Z
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
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CopyrightChainExplorerURL
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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 0x2478aba28f2f8af74ea99e9de610271c75e4db4e871a829bf3366067989e94fd. 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/FRX401500380 — a six-check JSON result.
date published: 2026-07-08T03:20:19Z

Valse noble No. 9, D. 969
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additional property: Mode (Major/Minor)
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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Bonis: Le diamant noir (Danses)
type: MusicAlbum
date published: 2016-02-05
track: Suite en forme de valses: II. Interlude et valse lente, Op. 36
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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: 2026-07-31T19:53:13Z
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track: Suite en forme de valses: III. Danse sacrée, Op. 37
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  additional property: OTSVerifyInstructions
    type: PropertyValue
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-30T09:37:10Z
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  subject of: OpenTimestamps Proof of Existence
  audio: Diamant noir, Op. 186 (Valse lente)
track: Gai printemps, Op. 11

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 0xab1c1f361eb7cf12a0140e8818ad3fafc10f0d4c9749f04b48705da0abb13315. 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/FRX401500170 — a six-check JSON result.
date published: 2026-07-08T03:20:19Z

Diamant noir, Op. 186 (Valse lente)
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additional property: Danceability
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additional property: Energy
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Gai printemps, Op. 11
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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: 2026-07-30T06:39:12Z
audio: Gai printemps, Op. 11
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Tchaïkovski: Romances et Sérénades
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Alkan: Ressouvenir (Works for piano)
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date published: 2014

Chopin: Eternal Peace
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date published: 2013-05-02

Selva: Chants de lumière (Mélodies et musique de chambre)
type: MusicAlbum
date published: 2013-03-12

Gouvy: L'œuvre pour deux pianos
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date published: 2012-11-20

de La Tombelle: Trio Op. 35 & Quatuor Op. 36
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date published: 2012-10-23

Viardot: Mélodies russes (Les compositrices, Vol. 4)
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date published: 2012-04-17

Bonis: "Le songe de Cléopâtre" (L'œuvre pour piano à quatre mains / Les compositrices, Vol. 3)
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    date published: 2026-07-31T17:29:52Z
  audio: Suite en forme de valses: I. Ballabile, Op. 35 (Mouvement modéré de valse)
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track: 6 Valses-Caprice, Op. 87: VI. Vico
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    date published: 2026-07-31T18:48:12Z
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track: Echo, Op. 89
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  audio: Echo, Op. 89
track: Etude en sol bémol, Op. 136

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OpenTimestamps Proof of Existence
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date published: 2026-07-31T12:24:41Z

Echo, Op. 89
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Etude en sol bémol, Op. 136
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T23:30:38Z
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Bach Intime (Intimate, Vertraut)
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track: Concerto after Marcello, in D Minor, BWV 974: II. Adagio
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    date published: 2026-07-08T03:20:19Z
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Chabrier : Prince du burlesque, mélodiste raffiné (Mélodies, œuvres pour piano, œuvres pour piano à 4 mains)
type: MusicAlbum
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Dubois: Remember (Musique de chambre pour violon & piano)
type: MusicAlbum
date published: 2009-02-26

Chopin, le poète...
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date published: 2008-01-10

Onslow: Duos pour piano et violon
type: MusicAlbum
date published: 2007-04-02

Boëly: L'œuvre pour piano à quatre mains
type: MusicAlbum
date published: 2006-03-01

de Castillon de Saint Victor: Pensées fugitives (Œuvres pour piano)
type: MusicAlbum
date published: 2005-10-01

Musique francaise pour clarinette et piano
type: MusicAlbum
date published: 2005-10-01

Haydn: Sonates pour piano HobXVI: 6, 23 & 49
type: MusicAlbum
date published: 2004-06-16

Onslow: "Aussitot que la lumière" (Œuvres pour piano)
type: MusicAlbum
date published: 2004-02-27

American Music: Bernstein, Cowell, Felciano, Copland, Cage, Carter, Glass
type: MusicAlbum
date published: 2003-09-03

Schubert: Ultima Verba (Klavierstücke & Impromptus)
type: MusicAlbum
date published: 2003-06-30

Alkan: Portrait "Le temps qui n'est plus"
type: MusicAlbum
date published: 2003-03-14

Pièces pour violoncelle et piano
type: MusicAlbum
date published: 2003-01-01

Onslow: L'Œuvre pour piano à quatre mains
type: MusicAlbum
date published: 2002-11-28

Alkan: Esquisses, Op. 63
type: MusicAlbum
date published: 2002-11-08

Schumann: Sonates pour violon et piano
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date published: 1997
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Scriabine: 1888-1914. Itinéraire planistique
type: MusicAlbum
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Berlioz: Mélodies
type: MusicAlbum
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Schumann: "1835" (Carnaval, Op. 9 - Sonate No. 1, Op. 11)
type: MusicAlbum
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Chabrier : Mélodies
type: MusicAlbum
date published: 1994-11-01

Liszt: Harmonies du soir (Ultimes pièces pour piano)
type: MusicAlbum
date published: 1994-09-10