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genre: classical piano
description: thumb|1915 photo of Rudolph Reuter. Published in the Musical Courier. Rudolph Reuter (September 21, 1888 – January 4, 1973) was an American pianist and professor. Early life, education and early car
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  date published: 2024-08-25
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  track: Samson Et Dalila: My Heart at Thy Sweet Voice - Welte-Mignon 2260
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  track: Ruins of Athens. Op. 113 (Arr. Solo Piano by Busoni): Fantasie - Welte-Mignon 1322
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  track: Concerto for Piano and Wind Instruments: Allegro from Mov. I (Arr. Solo Piano by Stravinsky) - Duo-Art 528-4
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  track: Piano Concerto No. 1, Op. 11 in E Minor: Romance, from 2nd Movement (Arr. Solo Piano by Backhaus) - Welte-Mignon 3310
  track: Piano Concerto, Op. 54 (Arr. Solo Piano by Adam-Benard): ‎I. Allegro Affettuoso - Welte-Mignon 28
  track: Piano Concerto No. 26 K.537 "Coronation Concerto" in D Major (Arr. Solo Piano by Carl Reinecke): II. Larghetto - Welte-Mignon 237
  track: Piano Concerto No. 1, in E Flat R 455, S.124 (Arr. Solo Piano by László): I. Allegro Maestoso - Welte-Mignon 3333
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  track: Piano Concerto No. 1, in E Flat R 455, S.124 (Arr. Solo Piano by László): III - IV. Allegretto Vivace - Allegro Animato Allegro Marziale Animato - Welte-Mignon 3334
  track: Piano Concerto No. 20 K.466 (Arr. Solo Piano by Mayer-Mahr): II. Romance - Duca Dca 749
  track: Piano Concerto No. 26, "Coronation Concerto" in D Major K.537 (Arr. Solo Piano by Grunfeld): II. Larghetto - Duca 519
  track: Piano Concerto No. 5, Op. 73: I. Allegro (Arr. Solo Piano by Backhaus) - Triphonola T-51951A
  track: Symphony No. 8 (Unfinished) in B Minor: II. Andante Con Moto (Arr. Solo Piano by Laszlo) - Welte-Mignon 3316
  track: Symphony No. 5, Op. 64 (Arr. Solo Piano by Laszlo): I. Andante, Allegro Con Anima - Welte-Mignon 3324
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  track: Die Zauberflote (The Magic Flute): Overture (Arr. 4 Hands Piano by Ganz) - Duo-Art 536-4
  track: Die Zauberflote (The Magic Flute): Overture (Arr. Solo Piano by Kohlberg) - Welte-Mignon 1802
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  track: Violin Sonata No. 2, Bourree in B Minor (Transcription by Saint-Saens) - Upon Piano Roll Duo-Art 67719, Issued 1924
  track: Leonore Overture No .3 to Fidelio. Op. 72B - Upon Piano Roll Duo-Art 7423, Issued 1930
  track: Don Giovanni. Fantasia - Upon Piano Roll Welte-Mignon 876, Issued 1911
  track: Piano Concerto No. 1, Op. 11 in E Minor: I. Allegro Maestoso - Upon Piano Roll Welte-Mignon 3976, Issued 1915
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Ruins of Athens. Op. 113 (Arr. Solo Piano by Busoni): Fantasie - Welte-Mignon 1322
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Adelaide, Op. 46 (Arr. Solo Piano by Liszt) - Welte-Mignon 443
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Concerto for Piano and Wind Instruments: Allegro from Mov. I (Arr. Solo Piano by Stravinsky) - Duo-Art 528-4
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Piano Concerto, Op. 16: II. Adagio (Arr. Solo Piano by Grainger) - Duo-Art 6479
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Piano Concerto No. 1, Op. 25 (Arr. By Backhaus): I. Molto Allegro Con Fuoco - Duo-Art 6967
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Piano Concerto No. 1, Op. 25 (Arr. By Backhaus): II. Andante - Duo-Art 6968
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Piano Concerto No. 1, Op. 25 (Arr. By Backhaus): III. Presto - Molto Allegro E Vivace - Duo-Art 6981
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Piano Concerto No. 1, Op. 11 in E Minor: Romance, from 2nd Movement (Arr. Solo Piano by Backhaus) - Welte-Mignon 3310
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Piano Concerto, Op. 54 (Arr. Solo Piano by Adam-Benard): ‎I. Allegro Affettuoso - Welte-Mignon 28
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Piano Concerto No. 26 K.537 "Coronation Concerto" in D Major (Arr. Solo Piano by Carl Reinecke): II. Larghetto - Welte-Mignon 237
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T00:26:26Z
audio: Piano Concerto No. 26 K.537 "Coronation Concerto" in D Major (Arr. Solo Piano by Carl Reinecke): II. Larghetto - Welte-Mignon 237
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Piano Concerto No. 1, in E Flat R 455, S.124 (Arr. Solo Piano by László): I. Allegro Maestoso - Welte-Mignon 3333
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:20:15Z
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Piano Concerto No. 1, in E Flat R 455, S.124 (Arr. Solo Piano by László): II. Quasi Adagio - Welte-Mignon 3334
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T00:26:26Z
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Piano Concerto No. 1, in E Flat R 455, S.124 (Arr. Solo Piano by László): III - IV. Allegretto Vivace - Allegro Animato Allegro Marziale Animato - Welte-Mignon 3334
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T10:20:10Z
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Piano Concerto No. 20 K.466 (Arr. Solo Piano by Mayer-Mahr): II. Romance - Duca Dca 749
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
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Piano Concerto No. 26, "Coronation Concerto" in D Major K.537 (Arr. Solo Piano by Grunfeld): II. Larghetto - Duca 519
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Piano Concerto No. 26, "Coronation Concerto" in D Major K.537 (Arr. Solo Piano by Grunfeld): II. Larghetto - Duca 519
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Piano Concerto No. 5, Op. 73: I. Allegro (Arr. Solo Piano by Backhaus) - Triphonola T-51951A
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T00:26:26Z
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  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Symphony No. 8 (Unfinished) in B Minor: II. Andante Con Moto (Arr. Solo Piano by Laszlo) - Welte-Mignon 3316
type: MusicRecording
duration: PT10M48S
duration ms: 648814
explicit: false
by artist: Rudolph Reuter
in album: Great Piano Transcriptions from the Golden-Age
  type: MusicAlbum
  date published: 2024-08-25
genre: classical piano
isrc code: DEPI82314141
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T08:22:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x483a01a1d9987f8b90ee4c3b111007865a69c6314d9041050a24cddee105dad5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960370
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960370
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82314141
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:38:45Z
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 0x483a01a1d9987f8b90ee4c3b111007865a69c6314d9041050a24cddee105dad5. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEPI82314141 — a six-check JSON result.
  date published: 2026-07-31T08:38:45Z
audio: Symphony No. 8 (Unfinished) in B Minor: II. Andante Con Moto (Arr. Solo Piano by Laszlo) - Welte-Mignon 3316
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.779
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.498
  additional property: Energy
    type: PropertyValue
    value: 0.024
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.933
  additional property: Liveness
    type: PropertyValue
    value: 0.103
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.102
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.114
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Symphony No. 5, Op. 64 (Arr. Solo Piano by Laszlo): I. Andante, Allegro Con Anima - Welte-Mignon 3324
type: MusicRecording
duration: PT12M57S
duration ms: 777639
explicit: false
by artist: Rudolph Reuter
in album: Great Piano Transcriptions from the Golden-Age
  type: MusicAlbum
  date published: 2024-08-25
genre: classical piano
isrc code: DEPI82318657
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T09:19:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa0e3a51fda1adbbd3ad9e28afd3a72944511750130150addb53c10fd5e0d5b91
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960379
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960379
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82318657
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T09:25:34Z
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 0xa0e3a51fda1adbbd3ad9e28afd3a72944511750130150addb53c10fd5e0d5b91. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DEPI82318657 — a six-check JSON result.
  date published: 2026-07-31T09:25:34Z
audio: Symphony No. 5, Op. 64 (Arr. Solo Piano by Laszlo): I. Andante, Allegro Con Anima - Welte-Mignon 3324
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.595
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.338
  additional property: Energy
    type: PropertyValue
    value: 0.169
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.912
  additional property: Liveness
    type: PropertyValue
    value: 0.139
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.11
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.25
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Adelaide, Op. 46. (Arr. Solo Piano by Liszt) - Duo-Art 7380
type: MusicRecording
duration: PT7M32S
duration ms: 452259
explicit: false
by artist: Rudolph Reuter
in album: Great Piano Transcriptions from the Golden-Age
  type: MusicAlbum
  date published: 2024-08-25
genre: classical piano
isrc code: DEPI82314129
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T07:16:02+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x90fe50f25e0c8ec1a4d95a5063c849b340a7782e5ea166edec3d4abdc2107ed4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960368
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960368
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82314129
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:26:41Z
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 0x90fe50f25e0c8ec1a4d95a5063c849b340a7782e5ea166edec3d4abdc2107ed4. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEPI82314129 — a six-check JSON result.
  date published: 2026-07-31T08:26:41Z
audio: Adelaide, Op. 46. (Arr. Solo Piano by Liszt) - Duo-Art 7380
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.263
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.257
  additional property: Energy
    type: PropertyValue
    value: 0.143
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.872
  additional property: Liveness
    type: PropertyValue
    value: 0.111
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.067
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.723
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Egmont, Op. 84: Overture (Arr. Solo Piano by Kohlberg) - Welte-Mignon 1801
type: MusicRecording
duration: PT7M54S
duration ms: 474240
explicit: false
by artist: Rudolph Reuter
in album: Great Piano Transcriptions from the Golden-Age
  type: MusicAlbum
  date published: 2024-08-25
genre: classical piano
isrc code: DEPI82314132
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T04:34:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd72fed686a6ad032c1f6fba071966d33977d0f8df5afc78a3a9f64a9cae40600
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82314132
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
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 0xd72fed686a6ad032c1f6fba071966d33977d0f8df5afc78a3a9f64a9cae40600. 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/DEPI82314132 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Egmont, Op. 84: Overture (Arr. Solo Piano by Kohlberg) - Welte-Mignon 1801
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 117.045
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.387
  additional property: Energy
    type: PropertyValue
    value: 0.171
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.959
  additional property: Liveness
    type: PropertyValue
    value: 0.052
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.084
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.162
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Leonore Overture No. 3, Op. 72a (Arr. Solo Piano by Ritter) - Welte-Mignon 3130
type: MusicRecording
duration: PT10M52S
duration ms: 652620
explicit: false
by artist: Rudolph Reuter
in album: Great Piano Transcriptions from the Golden-Age
  type: MusicAlbum
  date published: 2024-08-25
genre: classical piano
isrc code: DEPI82320967
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T04:22:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0eb83e264e6da42cf47c65f2acfa37a1bc9039007d0eb18eb5c33539b3985bfc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82320967
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
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 0x0eb83e264e6da42cf47c65f2acfa37a1bc9039007d0eb18eb5c33539b3985bfc. 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/DEPI82320967 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Leonore Overture No. 3, Op. 72a (Arr. Solo Piano by Ritter) - Welte-Mignon 3130
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.293
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.257
  additional property: Energy
    type: PropertyValue
    value: 0.267
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.972
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.938
  additional property: Liveness
    type: PropertyValue
    value: 0.071
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.069
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.542
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Zauberflote (The Magic Flute): Overture (Arr. 4 Hands Piano by Ganz) - Duo-Art 536-4
type: MusicRecording
duration: PT6M0S
duration ms: 360100
explicit: false
by artist: Rudolph Reuter
in album: Great Piano Transcriptions from the Golden-Age
  type: MusicAlbum
  date published: 2024-08-25
genre: classical piano
isrc code: DEPI82313577
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x769cfed7c0c4a479d1c034db854cecebcc4b371d9c5f7b6223e094a551031353
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960291
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960291
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82313577
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T18:23:33Z
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 0x769cfed7c0c4a479d1c034db854cecebcc4b371d9c5f7b6223e094a551031353. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEPI82313577 — a six-check JSON result.
  date published: 2026-07-30T18:23:33Z
audio: Die Zauberflote (The Magic Flute): Overture (Arr. 4 Hands Piano by Ganz) - Duo-Art 536-4
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.283
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.33
  additional property: Energy
    type: PropertyValue
    value: 0.316
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.987
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.93
  additional property: Liveness
    type: PropertyValue
    value: 0.079
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.155
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.606
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Zauberflote (The Magic Flute): Overture (Arr. Solo Piano by Kohlberg) - Welte-Mignon 1802
type: MusicRecording
duration: PT6M21S
duration ms: 381392
explicit: false
by artist: Rudolph Reuter
in album: Great Piano Transcriptions from the Golden-Age
  type: MusicAlbum
  date published: 2024-08-25
genre: classical piano
isrc code: DEPI82320965
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T10:10:23+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3434ab05561eea24ec220ba662f5ca93195f38588412dc2ac2c0f8b997a7efac
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960389
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960389
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82320965
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T10:20:10Z
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 0x3434ab05561eea24ec220ba662f5ca93195f38588412dc2ac2c0f8b997a7efac. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEPI82320965 — a six-check JSON result.
  date published: 2026-07-31T10:20:10Z
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Bolero (Arr. Solo Piano by Ganz) - Duo-Art 74728
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T00:26:26Z
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Violin Sonata No. 2, Bourree in B Minor (Transcription by Saint-Saens) - Upon Piano Roll Duo-Art 67719, Issued 1924
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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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Leonore Overture No .3 to Fidelio. Op. 72B - Upon Piano Roll Duo-Art 7423, Issued 1930
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T08:26:41Z
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Don Giovanni. Fantasia - Upon Piano Roll Welte-Mignon 876, Issued 1911
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T17:41:38Z
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Piano Concerto No. 1, Op. 11 in E Minor: I. Allegro Maestoso - Upon Piano Roll Welte-Mignon 3976, Issued 1915
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
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20th Century Piano Rolls - Printemps
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date published: 2025-02-22