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album: Transcriptions & Paraphrases for Piano (Arr. F. Noack)
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album: Transcriptions & Paraphrases for Piano (Arr. F. Noack)
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album: Brahms & Medtner: Piano Works
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album: Album d'un voyageur
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album: Album d'un voyageur
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album: Album d'un voyageur
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album: I Wanna Be Like You
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  date published: 2024-03-08
album: Tales of the Jazz Age
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track: 12 Études d'exécution transcendante, Op. 11: Tempête in C-Sharp Minor
track: 12 Études d'exécution transcendante, Op. 11: Idylle in A Major
track: 12 Études d'exécution transcendante, Op. 11: Chant épique in F-Sharp Minor
track: 12 Études d'exécution transcendante, Op. 11: Élégie en mémoire de Franz Liszt in E Minor
track: 12 Études d'exécution transcendante, Op. 11: Berceuse in F-Sharp Major
track: 12 Études d'exécution transcendante, Op. 11: Rondes des fantômes in D-Sharp Minor
track: 12 Études d'exécution transcendante, Op. 11: Carillon in B Major
track: 12 Études d'exécution transcendante, Op. 11: Térek in G-Sharp Minor
track: 12 Études d'exécution transcendante, Op. 11: Lesghinka in B Minor
track: 12 Études d'exécution transcendante, Op. 11: Rondes des sylphes in G Major

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12 Études d'exécution transcendante, Op. 11: Idylle in A Major
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12 Études d'exécution transcendante, Op. 11: Berceuse in F-Sharp Major
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duration ms: 217999
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by artist: Florian Noack
in album: Lyapunov: 12 Études d'exécution transcendante
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  date published: 2021-11-04
genre: early-modern-classical
genre: post-romantic-era
genre: russian-romanticism
genre: russian-modern-classical
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T14:36:16Z
audio: 12 Études d'exécution transcendante, Op. 11: Berceuse in F-Sharp Major
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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12 Études d'exécution transcendante, Op. 11: Rondes des fantômes in D-Sharp Minor
type: MusicRecording
duration: PT3M8S
duration ms: 188000
explicit: false
by artist: Sergei Lyapunov
by artist: Florian Noack
in album: Lyapunov: 12 Études d'exécution transcendante
  type: MusicAlbum
  date published: 2021-11-04
genre: early-modern-classical
genre: post-romantic-era
genre: russian-romanticism
genre: russian-modern-classical
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20aeec2f97a0b7d601bb214f222209287021069cae81f0efa64ed424e4221cf. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/FR3Z52000069.
  date published: 2026-07-30T16:01:17Z
audio: 12 Études d'exécution transcendante, Op. 11: Rondes des fantômes in D-Sharp Minor
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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12 Études d'exécution transcendante, Op. 11: Carillon in B Major
type: MusicRecording
duration: PT6M14S
duration ms: 374000
explicit: false
by artist: Sergei Lyapunov
by artist: Florian Noack
in album: Lyapunov: 12 Études d'exécution transcendante
  type: MusicAlbum
  date published: 2021-11-04
genre: early-modern-classical
genre: post-romantic-era
genre: russian-romanticism
genre: russian-modern-classical
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc7cced5788cfc7961a1a91992a3cedf8d5bb9bd07c689bfe50039bc25ad072. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FR3Z52000070.
  date published: 2026-07-31T20:22:46Z
audio: 12 Études d'exécution transcendante, Op. 11: Carillon in B Major
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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12 Études d'exécution transcendante, Op. 11: Térek in G-Sharp Minor
type: MusicRecording
duration: PT4M20S
duration ms: 260000
explicit: false
by artist: Sergei Lyapunov
by artist: Florian Noack
in album: Lyapunov: 12 Études d'exécution transcendante
  type: MusicAlbum
  date published: 2021-11-04
genre: early-modern-classical
genre: post-romantic-era
genre: russian-romanticism
genre: russian-modern-classical
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T09:50:37Z
audio: 12 Études d'exécution transcendante, Op. 11: Térek in G-Sharp Minor
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additional property: OTSVerifyInstructions
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12 Études d'exécution transcendante, Op. 11: Lesghinka in B Minor
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duration: PT6M37S
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explicit: false
by artist: Sergei Lyapunov
by artist: Florian Noack
in album: Lyapunov: 12 Études d'exécution transcendante
  type: MusicAlbum
  date published: 2021-11-04
genre: early-modern-classical
genre: post-romantic-era
genre: russian-romanticism
genre: russian-modern-classical
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
audio: 12 Études d'exécution transcendante, Op. 11: Lesghinka in B Minor
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  additional property: Acousticness
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  additional property: Instrumentalness
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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12 Études d'exécution transcendante, Op. 11: Rondes des sylphes in G Major
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duration: PT3M53S
duration ms: 233000
explicit: false
by artist: Sergei Lyapunov
by artist: Florian Noack
in album: Lyapunov: 12 Études d'exécution transcendante
  type: MusicAlbum
  date published: 2021-11-04
genre: early-modern-classical
genre: post-romantic-era
genre: russian-romanticism
genre: russian-modern-classical
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af81f8f59812b6dce98c3514a99d8d95b0db2c0a1173602039fd6ba78984683. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/FR3Z52000078.
  date published: 2026-07-31T09:50:11Z
audio: 12 Études d'exécution transcendante, Op. 11: Rondes des sylphes in G Major
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  additional property: Danceability
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isrc code: FR3Z52000078
additional property: CopyrightID
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additional property: OTSVerificationAPI
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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