Robert Fuchs
type: MusicGroup
genre: chamber music
description: Robert Fuchs may refer to: Robert Fuchs (composer) (1847–1927), Austrian composer and music teacher Robert Fuchs (general) (1895–1977), German general Robert Fuchs (footballer) (born 1975), Dutch
popularity: 17
followers: 1108
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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: Music for Strings by: Elgar, Arensky, Tchaikovsky, Fuchs
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  date published: 2022-08-26
  track: Variations on a Theme by Tchaikovsky, Op. 35a: III. Var. II. Allegro non Troppo
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    by artist: Pyotr Ilyich Tchaikovsky
    by artist: Anton Arensky
    by artist: Edward Elgar
    by artist: Robert Fuchs
    by artist: Orchestra Orfeo
    by artist: Domenico Famà
    in album: Music for Strings by: Elgar, Arensky, Tchaikovsky, Fuchs
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      date published: 2022-08-26
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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: 2026-07-29T11:07:37Z
    audio: Variations on a Theme by Tchaikovsky, Op. 35a: III. Var. II. Allegro non Troppo
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album: Fuchs: Violin Sonatas Nos. 4-6
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  date published: 2024-05-10
album: Robert Fuchs: 12 Etudes, Op. 31
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  date published: 2024-05-03
album: Pieces for piano Op 32 & 47 Robert Fuchs
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  date published: 2023-09-06
  track: Morning Song Op 32 No 1
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    by artist: Pablo F Bello
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    genre: early-modern-classical
    genre: post-romantic-era
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    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-29T11:07:37Z
    audio: Morning Song Op 32 No 1
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  track: Proud Horseman Op 47 No 2
  track: Smiles After Tears Op 47 No 10
  track: dear Little Sister Op 32 No 14
  track: Cradle Song Op 47 No 7
album: Fuchs: Clarinet Chamber Music
album: Fuchs: Violin Sonatas Nos. 1-3
album: Robert Fuchs: Works for Violin, Viola & Piano
album: Fuchs: The Complete Works for Cello & Piano
album: Fuchs: Symphonies Nos. 1 & 2
album: Fuchs: Ruhig und ausdrucksvoll
album: Fuchs: Piano Trio, Violin Sonata, Viola Phantasiestücke
album: Fuchs: Serenades Nos. 3, 4 & 5
album: Mondaufgang. Chorlieder für gemischte Stimmen. Pt. songs for mixed voices
album: Fuchs: Serenades Nos. 1 & 2
album: Fuchs: Piano Trios Nos. 1 & 2
album: Robert Fuchs: Complete Violin Sonatas Vol. 2
album: Fuchs: Piano Concerto, Op. 27 & Serenade No. 5, Op. 53
album: Robert Fuchs: Klavierquartette
album: Fuchs & Kiel: Piano Concertos (Hyperion Romantic Piano Concerto 31)
album: Robert Fuchs: Complete Violin Sonatas Vol. 1
album: Fuchs: Complete String Quartets, Vol. 2
album: Fuchs: Complete String Quartets, Vol. 1
album: Robert Fuchs: Erste Symphonie in C-Dur, op. 37, Zweite Symphonie in Es-Dur, op. 45
album: Fuchs, R.: 6 Fantasy Pieces / Viola Sonata in D Minor / Piano Trio in F-Sharp Minor
album: Robert Fuchs: Orchesterwerke Vol. I
album: Fuchs: Piano Sonata Op. 108 / Jugendklange / 12 Waltzes
album: Fuchs: Sonatas for Cello and Piano
album: Fuchs: Piano Sonatas Op. 19 and Op. 88
album: Romberg, Fuchs & Stanford: Clarinet Quintets
album: Rossini: Il barbiere di siviglia: Largo al factotum: "Largo al factotum"
album: Fuchs: Serenade No. 1, Op. 9

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Proud Horseman Op 47 No 2
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by artist: Pablo F Bello
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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: 2026-07-31T15:59:18Z
audio: Proud Horseman Op 47 No 2
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Smiles After Tears Op 47 No 10
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by artist: Pablo F Bello
in album: Pieces for piano Op 32 & 47 Robert Fuchs
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genre: early-modern-classical
genre: post-romantic-era
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Smiles After Tears Op 47 No 10
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dear Little Sister Op 32 No 14
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by artist: Pablo F Bello
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genre: early-modern-classical
genre: post-romantic-era
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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: 2026-07-31T02:19:15Z
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Cradle Song Op 47 No 7
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  date published: 2023-09-06
genre: early-modern-classical
genre: post-romantic-era
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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: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960266
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2300098
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T14:44:50Z
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 0xd8e1320414fd2218e3383b92f57376b79e0815e0d53ed38bb4ca52e985906f4f. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZTAU2300098.
  date published: 2026-07-30T14:44:50Z
audio: Cradle Song Op 47 No 7
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Fuchs: Clarinet Chamber Music
type: MusicAlbum
date published: 2021-07-30

Fuchs: Violin Sonatas Nos. 1-3
type: MusicAlbum
date published: 2020-09-11

Robert Fuchs: Works for Violin, Viola & Piano
type: MusicAlbum
date published: 2018-05-28

Fuchs: The Complete Works for Cello & Piano
type: MusicAlbum
date published: 2017-05-19

Fuchs: Symphonies Nos. 1 & 2
type: MusicAlbum
date published: 2016-04-01

Fuchs: Ruhig und ausdrucksvoll
type: MusicAlbum
date published: 2015-10-30

Fuchs: Piano Trio, Violin Sonata, Viola Phantasiestücke
type: MusicAlbum
date published: 2015-06-05

Fuchs: Serenades Nos. 3, 4 & 5
type: MusicAlbum
date published: 2012-04-03

Mondaufgang. Chorlieder für gemischte Stimmen. Pt. songs for mixed voices
type: MusicAlbum
date published: 2012

Fuchs: Serenades Nos. 1 & 2
type: MusicAlbum
date published: 2011-03-01
track: Serenade No. 1 in D Major, Op. 9: I. Andante
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  duration: PT2M50S
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  by artist: Robert Fuchs
  by artist: Cologne Chamber Orchestra
  by artist: Christian Ludwig
  in album: Fuchs: Serenades Nos. 1 & 2
    type: MusicAlbum
    date published: 2011-03-01
  genre: early-modern-classical
  genre: post-romantic-era
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953520
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191011901
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T13:32:09Z
  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 0xc2188d135efe5d87812c033e839b877f41b5560b25b23174ee7cadd25e52a47e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKI191011901.
    date published: 2026-06-13T13:32:09Z
  audio: Serenade No. 1 in D Major, Op. 9: I. Andante
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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: Valence (Positivity)
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track: Serenade No. 1 in D Major, Op. 9: II. Tempo di menuetto
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  duration ms: 234693
  explicit: false
  by artist: Robert Fuchs
  by artist: Cologne Chamber Orchestra
  by artist: Christian Ludwig
  in album: Fuchs: Serenades Nos. 1 & 2
    type: MusicAlbum
    date published: 2011-03-01
  genre: early-modern-classical
  genre: post-romantic-era
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T22:15:01+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xfe44ae50661fc4ffd07cd7c237c87d86eeb49afc863bbfdf4390f77f8e2469f6
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960327
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191011902
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T00:26:26Z
  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 0xfe44ae50661fc4ffd07cd7c237c87d86eeb49afc863bbfdf4390f77f8e2469f6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/HKI191011902.
    date published: 2026-07-31T00:26:26Z
  audio: Serenade No. 1 in D Major, Op. 9: II. Tempo di menuetto
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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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track: Serenade No. 1 in D Major, Op. 9: III. Allegro scherzando
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  duration ms: 277920
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  by artist: Robert Fuchs
  by artist: Cologne Chamber Orchestra
  by artist: Christian Ludwig
  in album: Fuchs: Serenades Nos. 1 & 2
    type: MusicAlbum
    date published: 2011-03-01
  genre: early-modern-classical
  genre: post-romantic-era
  isrc code: HKI191011903
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T01:32:54+00:00
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Serenade No. 1 in D Major, Op. 9: III. Allegro scherzando
track: Serenade No. 1 in D Major, Op. 9: IV. Adagio - Con molto espressione
track: Serenade No. 1 in D Major, Op. 9: V. Finale: Allegro
track: Serenade No. 2 in C Major, Op. 14: I. Allegretto
track: Serenade No. 2 in C Major, Op. 14: II. Larghetto
track: Serenade No. 2 in C Major, Op. 14: III. Allegro risoluto
track: Serenade No. 2 in C Major, Op. 14: IV. Finale: Presto
track: Andante grazioso

CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0xc24fc4285eeee4d2812657438cde6acde66040eacd4893121bd9c0d1099d6f1e

OTSHash
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OTSBitcoinBlock
type: PropertyValue
value: 960191

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960191

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191011903

OTSTimestamp
type: PropertyValue
value: 2026-07-30T01:51:26Z

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 0xc24fc4285eeee4d2812657438cde6acde66040eacd4893121bd9c0d1099d6f1e. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/HKI191011903.
date published: 2026-07-30T01:51:26Z

Serenade No. 1 in D Major, Op. 9: III. Allegro scherzando
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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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  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.331
additional property: Energy
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additional property: Speechiness
  type: PropertyValue
  value: 0.038
additional property: Acousticness
  type: PropertyValue
  value: 0.803
additional property: Instrumentalness
  type: PropertyValue
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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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Serenade No. 1 in D Major, Op. 9: IV. Adagio - Con molto espressione
type: MusicRecording
duration: PT3M12S
duration ms: 192546
explicit: false
by artist: Robert Fuchs
by artist: Cologne Chamber Orchestra
by artist: Christian Ludwig
in album: Fuchs: Serenades Nos. 1 & 2
  type: MusicAlbum
  date published: 2011-03-01
genre: early-modern-classical
genre: post-romantic-era
isrc code: HKI191011904
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
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191011904
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T05:17:02Z
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 0xd130cefdbefc1984d8d6ebbbac4f65940444c24442c07d0423b2786c433ff48c. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/HKI191011904.
  date published: 2026-07-31T05:17:02Z
audio: Serenade No. 1 in D Major, Op. 9: IV. Adagio - Con molto espressione
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  additional property: Mode (Major/Minor)
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Serenade No. 1 in D Major, Op. 9: V. Finale: Allegro
type: MusicRecording
duration: PT5M7S
duration ms: 307240
explicit: false
by artist: Robert Fuchs
by artist: Cologne Chamber Orchestra
by artist: Christian Ludwig
in album: Fuchs: Serenades Nos. 1 & 2
  type: MusicAlbum
  date published: 2011-03-01
genre: early-modern-classical
genre: post-romantic-era
isrc code: HKI191011905
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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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
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960348
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191011905
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T05:17:02Z
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 0xa0b53c131d29decd5f8e734824a2969cacb35f3999f223346658daabb7012fad. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/HKI191011905.
  date published: 2026-07-31T05:17:02Z
audio: Serenade No. 1 in D Major, Op. 9: V. Finale: Allegro
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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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Serenade No. 2 in C Major, Op. 14: I. Allegretto
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duration: PT2M57S
duration ms: 177053
explicit: false
by artist: Robert Fuchs
by artist: Cologne Chamber Orchestra
by artist: Christian Ludwig
in album: Fuchs: Serenades Nos. 1 & 2
  type: MusicAlbum
  date published: 2011-03-01
genre: early-modern-classical
genre: post-romantic-era
isrc code: HKI191011906
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: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T12:24:41Z
audio: Serenade No. 2 in C Major, Op. 14: I. Allegretto
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Serenade No. 2 in C Major, Op. 14: II. Larghetto
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by artist: Cologne Chamber Orchestra
by artist: Christian Ludwig
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Serenade No. 2 in C Major, Op. 14: III. Allegro risoluto
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by artist: Cologne Chamber Orchestra
by artist: Christian Ludwig
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genre: early-modern-classical
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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: 2026-07-22T15:38:35Z
audio: Serenade No. 2 in C Major, Op. 14: III. Allegro risoluto
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Serenade No. 2 in C Major, Op. 14: IV. Finale: Presto
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genre: early-modern-classical
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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: 2026-07-30T03:35:13Z
audio: Serenade No. 2 in C Major, Op. 14: IV. Finale: Presto
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Andante grazioso
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T17:29:52Z
audio: Andante grazioso
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Fuchs: Piano Trios Nos. 1 & 2
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date published: 2005-01-01

Robert Fuchs: Complete Violin Sonatas Vol. 2
type: MusicAlbum
date published: 2004-09-09

Fuchs: Piano Concerto, Op. 27 & Serenade No. 5, Op. 53
type: MusicAlbum
date published: 2004-03-16

Robert Fuchs: Klavierquartette
type: MusicAlbum
date published: 2003-02-11

Fuchs & Kiel: Piano Concertos (Hyperion Romantic Piano Concerto 31)
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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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Robert Fuchs: Complete Violin Sonatas Vol. 1
type: MusicAlbum
date published: 2002-12-01

Fuchs: Complete String Quartets, Vol. 2
type: MusicAlbum
date published: 2001-02-01

Fuchs: Complete String Quartets, Vol. 1
type: MusicAlbum
date published: 2000-10-01

Robert Fuchs: Erste Symphonie in C-Dur, op. 37, Zweite Symphonie in Es-Dur, op. 45
type: MusicAlbum
date published: 1996-01-01

Fuchs, R.: 6 Fantasy Pieces / Viola Sonata in D Minor / Piano Trio in F-Sharp Minor
type: MusicAlbum
date published: 1996-01-01

Robert Fuchs: Orchesterwerke Vol. I
type: MusicAlbum
date published: 1995-01-01

Fuchs: Piano Sonata Op. 108 / Jugendklange / 12 Waltzes
type: MusicAlbum
date published: 1993-05-10

Fuchs: Sonatas for Cello and Piano
type: MusicAlbum
date published: 1993-03-15

Fuchs: Piano Sonatas Op. 19 and Op. 88
type: MusicAlbum
date published: 1992-06-16

Romberg, Fuchs & Stanford: Clarinet Quintets
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date published: 1992-04-01
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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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Rossini: Il barbiere di siviglia: Largo al factotum: "Largo al factotum"
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date published: 2022-12-14

Fuchs: Serenade No. 1, Op. 9
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