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description: thumb|Fukuma rehearsing in 2013 Kōtarō Fukuma (ふくま こうたろう or 福間 洸太朗) is a Japanese classical pianist born 29 August 1982 in Kokubunji City, west of the special wards of Tokyo. He graduated from Tokyo
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  track: Matthäuspassion, BWV 244, Pt. 2: No. 39, Erbarme dich (Arr. K. Fukuma for Piano)
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  track: An Wasserflüssen Babylon, BWV 653 (Arr. S. Feinberg for Piano)
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5 Morceaux de fantaisie, Op. 3: III. No. 3, Mélodie
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10 Chorale Preludes, BV B 27 (Excerpts): No. 5, Ich ruf zu dir Herr Jesu Christ [After J.S. Bach's BWV 639]
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Piano Sonata No. 17 in D Minor, Op. 31 No. 2 "Tempest": II. Adagio
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Piano Sonata No. 24 in F-Sharp Major, Op. 78 "À Thérèse": I. Adagio cantabile - Allegro ma non troppo
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T17:25:41Z
audio: Piano Sonata No. 24 in F-Sharp Major, Op. 78 "À Thérèse": I. Adagio cantabile - Allegro ma non troppo
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Berceuse in D-Flat Major, Op. 57
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duration: PT4M43S
duration ms: 283000
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by artist: Frédéric Chopin
by artist: Kotaro Fukuma
in album: Chopin Legacy
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genre: classical
genre: early-romantic-era
genre: polish-classical
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Berceuse in D-Flat Major, Op. 57
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Energy
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Speechiness
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Acousticness
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Instrumentalness
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Liveness
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Valence (Positivity)
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Loudness (dB)
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An Wasserflüssen Babylon, BWV 653 (Arr. S. Feinberg for Piano)
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duration: PT5M13S
duration ms: 313782
explicit: false
by artist: Johann Sebastian Bach
by artist: Kotaro Fukuma
in album: J.S. Bach: Piano Transcriptions
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genre: classical
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546c4e8c5cb16c6b9197010dc148f8631b37caffcc70419bccc78bd17e07a653. 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/JPP592100012.
  date published: 2026-07-08T03:20:19Z
audio: An Wasserflüssen Babylon, BWV 653 (Arr. S. Feinberg for Piano)
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Beethoven: Piano Sonatas
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date published: 2020-04-17
track: Piano Sonata No. 17 in D Minor, Op. 31 No. 2 "Tempest": II. Adagio
track: Piano Sonata No. 17 in D Minor, Op. 31 No. 2 "Tempest": III. Allegretto
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89df2c1cd17e500e43a4715c020320a0c0a3444182b98056adb477dfb5c60086. 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/JPP592000003.
    date published: 2026-07-08T03:53:27Z
  audio: Piano Sonata No. 17 in D Minor, Op. 31 No. 2 "Tempest": III. Allegretto
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track: Piano Sonata No. 24 in F-Sharp Major, Op. 78 "À Thérèse": I. Adagio cantabile - Allegro ma non troppo
track: Piano Sonata No. 24 in F-Sharp Major, Op. 78 "À Thérèse": II. Allegro vivace
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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: 2026-07-08T03:39:04Z
  audio: Piano Sonata No. 24 in F-Sharp Major, Op. 78 "À Thérèse": II. Allegro vivace
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Listen to the Universe
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date published: 2019-09-04

France Romance
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date published: 2019-04-05

Chopin Legacy
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date published: 2017-09-15
track: 24 Préludes, Op. 28: No. 4 in E Minor
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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: 24 Préludes, Op. 28: No. 4 in E Minor
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track: 24 Préludes, Op. 28: No. 12 in G-Sharp Minor
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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
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track: 24 Préludes, Op. 28: No. 19 in E-Flat Major
track: 24 Préludes, Op. 28: No. 22 in G Minor
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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subject of: OpenTimestamps Proof of Existence
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audio: 24 Préludes, Op. 28: No. 23 in F Major
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
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    date published: 2026-07-08T08:56:20Z
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Suite bergamasque, L. 75: III. Clair de lune (Featured in "Man on Fire")
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Cello Suite No. 1 in G Major, BWV 1007: I. Prelude
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6 Klavierstücke, Op. 118: No. 2, Intermezzo in A Major. Andante teneramente
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III. Nicht schnell (Re-Orchestrated by G. Mahler)
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Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
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3 Visions: No. 2, Summerland (Version for Violin & Orchestra)
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Gaspard de la nuit, M. 55: II. Le gibet
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3 Gymnopédies: No. 1
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Suite Veneziana in A Minor, Op. 18: II. Barcarola
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Piano momento No. 5
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For Children, Vol. 1, Sz. 42 (Excerpts): No. 26, Dance with Me. Andante [Transcr. F. Ránki] [1945 Radio Version]
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II. Largo
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Partita No. 7 in C Major (Arr. G. Buscemi for Guitar): II. Andante
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Harp Quintet in C Minor, AV 24: II. Adagio
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subject of: OpenTimestamps Proof of Existence
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Goldberg Variations, BWV 988: Aria
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
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Orchestral Suite No. 4, Op. 61, TH 34 "Mozartiana": III. Preghiera
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Orchestral Suite No. 4, Op. 61, TH 34 "Mozartiana": III. Preghiera
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5 Lieder, Op. 49: No. 4, Wiegenlied (Arr. K.H. Schütz for Flute & Piano)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: 5 Lieder, Op. 49: No. 4, Wiegenlied (Arr. K.H. Schütz for Flute & Piano)
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Symphony in A Major, Op. 16 No. 2: II. Adagio
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  date published: 2026-07-08T08:56:20Z
audio: Symphony in A Major, Op. 16 No. 2: II. Adagio
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Flute Sonata in E-Flat Major, BWV 1031: II. Siciliano (Arr. D. Sosin for flute and harp)
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  date published: 2026-07-08T03:53:27Z
audio: Flute Sonata in E-Flat Major, BWV 1031: II. Siciliano (Arr. D. Sosin for flute and harp)
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Scenes from Childhood, Op. 15: VII. Träumerei
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  date published: 2026-07-08T08:56:20Z
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6 Bagatelles, Op. 126: No. 5 in G Major: Quasi allegretto
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French Classical Masterpieces
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Chefs d'oeuvre de la musique classique française
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Classical for Dogs
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Russian Classical Masterpieces
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Rarities of Piano Music at Schloss vor Husum, 2022 Festival (Live)
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Easy-Listening Piano Classics: Schumann
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Classical Christmas
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Classical Hidden Gems, Vol. 6
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The Essential Schumann
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99511fa34fb07974479fbc2ba4a325f047f2d4671061a95dcd3eec3a7ee39b53. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITN322220855.
    date published: 2026-07-08T08:56:20Z
  audio: XX. Canon
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 98.996
    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: 0.57
    additional property: Energy
      type: PropertyValue
      value: 0
    additional property: Speechiness
      type: PropertyValue
      value: 0.233
    additional property: Acousticness
      type: PropertyValue
      value: 0.996
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.951
    additional property: Liveness
      type: PropertyValue
      value: 0.088
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.635
    additional property: Loudness (dB)
      type: PropertyValue
      value: -38.853
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major

Classical Chill
type: MusicAlbum
date published: 2023-12-08