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description: Theophil Franz Xaver Scharwenka (6 January 1850 – 8 December 1924) was a German pianist,Xaver Scharwenka, Sounds From My Life: Reminiscences of a Musician, 7 composer and teacher of Polish descent. He
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  track: Impromptu No. 1, Op. 29, A-Flat Major - Welte-Mignon 455
album: Romantic Piano Concertos, Vol. 1
album: Russian Piano Concertos
album: Idyll. Heritage Piano Music of Beethoven & Schumann
album: From the Depths. Beethoven, Tchaikovksy and Dvorak in Time
album: Scharwenka: Piano Concertos Nos. 2 & 3 (Hyperion Romantic Piano Concerto 33)
album: Scharwenka: Piano Concerto No. 2 & No. 3
album: Aeolian Murmurings. Piano Evocations from the Golden Age
album: Le Vent Dans La Plaine. Debussy, Beethoven, Mozart and Legacy.
album: A To Z Of Pianists
album: Sauer & Scharwenka: Piano Concertos (Hyperion Romantic Piano Concerto 11)
album: Scharwenka: Piano Concerto No. 1 in B-Flat Minor, Op. 32 & Symphony in C Minor, Op. 60
album: 沙尔文卡 为青少年而作的钢琴曲 世界古典名曲
album: 沙尔文卡：为青少年而作的钢琴曲集
album: 沙尔文卡：为青少年而作的钢琴曲
album: Sapellnikoff & Scharwenka: The Complete Recordings (Recorded 1910-1927)
album: Scharwenka: Complete Piano Concertos
album: Scharwenka: Piano Concerto No. 4 - Polish Dances - Mataswintha: Overture - Andante religioso
album: Scharwenka: Piano Concerto No. 1 in B-Flat Minor
album: Stephen Hough's Spanish Album
album: Rubinstein: Piano Concerto No. 4 – Scharwenka: Piano Concerto No. 1 (Hyperion Romantic Piano Concerto 38)
album: Scharwenka: Piano Music, Vol. 4
album: Scharwenka: Piano Music, Vol. 3
album: Scharwenka: Deutsche Romantiker, Vol. 6
album: Scharwenka: The Complete Chamber Music
album: Scharwenka: Piano Music, Vol. 2
album: Scharwenka: Piano Music, Vol. 1
album: Scharwenka, X.: Piano Concertos Nos. 1 and 2
album: Chopin: Works for Piano
album: Scharwenka: The Piano Works, Vol. 3
album: Xaver Scharwenka - piano & chamber music
album: Miniatures
album: Am Stillen Herd. Opera Transcriptions from the Golden Age
album: Toccata. Piano Essentials from the Golden Age
album: Elle Danse. Piano Essentials from the Golden Age
album: Caprice. Heritage Piano Music of Dvořák, Mendelssohn and Ravel
album: Characterstucke. Heritage Piano Music of Bach, Mendelssohn and Sibelius
album: Romanze. Heritage Chopin, Grieg & Tchaikovsky
album: Berceuse. Mendelssohn, Schubert & Beethoven in Time
album: Grainger: The Complete 78-RPM Solo Recordings (Recorded 1908-1945)
album: Beethoven & Friends: Classics by the Great Composers
album: Beethoven: Symphony No. 7 & Great Fugue
album: 'Atalia' - Contemporary & Classical Masterworks, Vol. 1
album: Belle Epoque
album: Piano Kaleidoscope
album: "A Concert of Pianists" - Vol. II
album: "A Set of Variations" - Romantic Composers

Piano Concerto No. 4 in F Minor, Op. 82: III. Lento, mesto
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Piano Concerto No. 4 in F Minor, Op. 82: I. Allegro patetico
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Piano Concerto No. 4 in F Minor, Op. 82: II. Intermezzo. Allegretto molto tranquillo
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Piano Concerto No. 4 in F Minor, Op. 82: IV. Allegro con fuoco
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by artist: Lawrence Foster
by artist: Stephen Hough
by artist: City Of Birmingham Symphony Orchestra
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genre: classical-piano
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  date published: 2026-07-31T04:14:58Z
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Concerto No. 1, Op. 32, Scharw. 125: III. Allegro non tanto
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duration: PT12M24S
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by artist: Neeme Järvi
by artist: Estonian National Symphony Orchestra
by artist: Alexander Markovich
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  date published: 2026-07-08T03:39:04Z
audio: Concerto No. 1, Op. 32, Scharw. 125: III. Allegro non tanto
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Concerto No. 4, Op. 82, Scharw. 128: I. Allegro patetico - Molto più lento
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duration: PT19M47S
duration ms: 1187493
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by artist: Neeme Järvi
by artist: Estonian National Symphony Orchestra
by artist: Alexander Markovich
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genre: classical-piano
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  date published: 2026-07-08T08:56:20Z
audio: Concerto No. 4, Op. 82, Scharw. 128: I. Allegro patetico - Molto più lento
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Concerto No. 2, Op. 56, Scharw. 126: II. Adagio
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by artist: Estonian National Symphony Orchestra
by artist: Alexander Markovich
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additional property: OTSVerifyInstructions
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  date published: 2026-07-06T01:26:17Z
audio: Concerto No. 2, Op. 56, Scharw. 126: II. Adagio
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Concerto No. 2, Op. 56, Scharw. 126: III. Allegro non troppo - Più mosso
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  date published: 2026-07-08T03:53:27Z
audio: Concerto No. 2, Op. 56, Scharw. 126: III. Allegro non troppo - Più mosso
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Concerto No. 4, Op. 82, Scharw. 128: III. Lento, mesto
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Concerto No. 4, Op. 82, Scharw. 128: IV. Allegro con fuoco
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1402907
additional property: OTSTimestamp
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  value: 2026-07-08T03:20:19+00:00
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
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
  type: PropertyValue
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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 0xfc40a21b671c4987dbfa03b5bf1fe6a3832ed1188975ab816ea4a5c06c41d621. 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/GBLWD1402907.
  date published: 2026-07-08T03:53:27Z
audio: Concerto No. 4, Op. 82, Scharw. 128: IV. Allegro con fuoco
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Concerto No. 1, Op. 32, Scharw. 125: I. Allegro patetico - Più animato
type: MusicRecording
duration: PT10M42S
duration ms: 642673
explicit: false
by artist: Xaver Scharwenka
by artist: Neeme Järvi
by artist: Estonian National Symphony Orchestra
by artist: Alexander Markovich
in album: Scharwenka: Complete Piano Concertos
  type: MusicAlbum
  date published: 2014-03-22
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cead6612482bec632a7cb1ba0fb027fb45bc3031c7175016b713f7711f19e7c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1402801.
  date published: 2026-07-30T09:57:33Z
audio: Concerto No. 1, Op. 32, Scharw. 125: I. Allegro patetico - Più animato
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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    value: 0.054
  additional property: Loudness (dB)
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    value: -24.118
  additional property: Key Name
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    value: Bb
  additional property: Mode Name
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isrc code: GBLWD1402801
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
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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: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T09:57:33+00:00
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

Concerto No. 3, Op. 80, Scharw. 127: I. Maestoso - Cadenza
type: MusicRecording
duration: PT14M8S
duration ms: 848626
explicit: false
by artist: Xaver Scharwenka
by artist: Neeme Järvi
by artist: Estonian National Symphony Orchestra
by artist: Alexander Markovich
in album: Scharwenka: Complete Piano Concertos
  type: MusicAlbum
  date published: 2014-03-22
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df2f0875bfcd0d973abe7eb0f6aa58bb04bb2c94e343327af050cfa501a41ba. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1402901.
  date published: 2026-07-30T09:57:33Z
audio: Concerto No. 3, Op. 80, Scharw. 127: I. Maestoso - Cadenza
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  additional property: Time Signature
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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: Instrumentalness
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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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isrc code: GBLWD1402901
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T09:57:33+00:00
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

Concerto No. 1, Op. 32, Scharw. 125: II. Scherzo. Allegro assai
type: MusicRecording
duration: PT7M9S
duration ms: 429400
explicit: false
by artist: Xaver Scharwenka
by artist: Neeme Järvi
by artist: Estonian National Symphony Orchestra
by artist: Alexander Markovich
in album: Scharwenka: Complete Piano Concertos
  type: MusicAlbum
  date published: 2014-03-22
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4a1dec4ea6b8f306631bda6213a4f8d9b88d9bb672dc3de4cd8d97b9938ac3. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBLWD1402802.
  date published: 2026-07-31T04:14:58Z
audio: Concerto No. 1, Op. 32, Scharw. 125: II. Scherzo. Allegro assai
  type: AudioObject
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.351
  additional property: Energy
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    value: 0.187
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.969
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.881
  additional property: Liveness
    type: PropertyValue
    value: 0.173
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.216
  additional property: Loudness (dB)
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    value: -24.513
  additional property: Key Name
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    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: GBLWD1402802
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1402802
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T04:14:58+00:00
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

Concerto No. 3, Op. 80, Scharw. 127: II. Adagio
type: MusicRecording
duration: PT6M43S
duration ms: 403813
explicit: false
by artist: Xaver Scharwenka
by artist: Neeme Järvi
by artist: Estonian National Symphony Orchestra
by artist: Alexander Markovich
in album: Scharwenka: Complete Piano Concertos
  type: MusicAlbum
  date published: 2014-03-22
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc993ec8411e87707bcfe6298e6f9e76493a2471cbd84d9bf56f7d3b02d5a9da1. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBLWD1402902.
  date published: 2026-07-30T22:27:30Z
audio: Concerto No. 3, Op. 80, Scharw. 127: II. Adagio
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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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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.192
  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.869
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.054
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.9
  additional property: Key Name
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  additional property: Mode Name
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isrc code: GBLWD1402902
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1402902
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T22:27:30+00:00
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

Concerto No. 2, Op. 56, Scharw. 126: I. Allegro - Un poco meno mosso - Cadenza
type: MusicRecording
duration: PT18M58S
duration ms: 1138706
explicit: false
by artist: Xaver Scharwenka
by artist: Neeme Järvi
by artist: Estonian National Symphony Orchestra
by artist: Alexander Markovich
in album: Scharwenka: Complete Piano Concertos
  type: MusicAlbum
  date published: 2014-03-22
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f03677404f672e270749d5f7f16ddc716b83ab838a7124f19d4f0d2a176cd31. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBLWD1402804.
  date published: 2026-07-31T15:59:18Z
audio: Concerto No. 2, Op. 56, Scharw. 126: I. Allegro - Un poco meno mosso - Cadenza
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 122.115
  additional property: Musical Key
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    value: 0
  additional property: Mode (Major/Minor)
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    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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    value: 0.26
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.946
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.942
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.078
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.186
  additional property: Key Name
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  additional property: Mode Name
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isrc code: GBLWD1402804
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
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additional property: TokenDeploymentConfirmed
  type: PropertyValue
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T15:59:18+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1402804
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960427
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:59:18+00:00
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

Concerto No. 4, Op. 82, Scharw. 128: II. Intermezzo. Allegretto molto tranquillo
type: MusicRecording
duration: PT6M53S
duration ms: 413506
explicit: false
by artist: Xaver Scharwenka
by artist: Neeme Järvi
by artist: Estonian National Symphony Orchestra
by artist: Alexander Markovich
in album: Scharwenka: Complete Piano Concertos
  type: MusicAlbum
  date published: 2014-03-22
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc23202db6e75c0abe74e2173e485d844029116e95aae26380080ef33ff0dee. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBLWD1402905.
  date published: 2026-07-31T18:48:12Z
audio: Concerto No. 4, Op. 82, Scharw. 128: II. Intermezzo. Allegretto molto tranquillo
  type: AudioObject
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    value: 145.86
  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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  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: Instrumentalness
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    value: 0.869
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.264
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
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    value: Major
isrc code: GBLWD1402905
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
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additional property: TokenDeploymentConfirmed
  type: PropertyValue
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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Piano Concerto No. 1 in B-Flat Minor, Op. 32: II. Allegro assai
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Piano Concerto No. 1 in B-Flat Minor, Op. 32: I. Allegro patetico
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Piano Concerto No. 1 in B-Flat Minor, Op. 32: III. Allegro non tanto – Allegro patetico, come prima
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6 Waltzes, Op. 28: No. 4, Non troppo allegro
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6 Dance Caprices, ScharWV 38: No. 2, Waltz in C-Sharp Minor
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6 Waltzes, Op. 28: No. 3, Animato
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Symphony No. 7 in A Major, Op. 92: III. Allegretto (Arranged for Piano Four Hands)
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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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: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf697922719111da580ce7422821071ac79d0e8b64470719c974e8b014bf4e87. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA141486103.
  date published: 2026-07-08T03:22:41Z
audio: Symphony No. 7 in A Major, Op. 92: III. Allegretto (Arranged for Piano Four Hands)
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Symphony No. 7 in A Major, Op. 92: IV. Presto (Arranged for Piano Four Hands)
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duration: PT12M29S
duration ms: 749146
explicit: false
by artist: Xaver Scharwenka
by artist: Piano Duo Trenkner & Speidel
in album: Beethoven: Symphony No. 7 & Great Fugue
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  date published: 2014-09-01
genre: classical-piano
isrc code: DEA141486104
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA141486104
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
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: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Symphony No. 7 in A Major, Op. 92: IV. Presto (Arranged for Piano Four Hands)
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Symphony No. 7 in A Major, Op. 92: II. Vivace (Arranged for Piano Four Hands)
type: MusicRecording
duration: PT12M9S
duration ms: 729240
explicit: false
by artist: Xaver Scharwenka
by artist: Piano Duo Trenkner & Speidel
in album: Beethoven: Symphony No. 7 & Great Fugue
  type: MusicAlbum
  date published: 2014-09-01
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954db405417ac9a75f9e4f8d71ba08ac18da6c703c34398c422ef1263fcde169. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEA141486102.
  date published: 2026-07-31T02:19:15Z
audio: Symphony No. 7 in A Major, Op. 92: II. Vivace (Arranged for Piano Four Hands)
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isrc code: DEA141486102
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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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
  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

Symphony No. 7 in A Major, Op. 92: V. Allegro con brio (Arranged for Piano Four Hands)
type: MusicRecording
duration: PT9M44S
duration ms: 584746
explicit: false
by artist: Xaver Scharwenka
by artist: Piano Duo Trenkner & Speidel
in album: Beethoven: Symphony No. 7 & Great Fugue
  type: MusicAlbum
  date published: 2014-09-01
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0d01b3c65d388144207911d2b84006626bb017f60f2fe0fcf0820e28bdb331. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA141486105.
  date published: 2026-07-31T12:24:41Z
audio: Symphony No. 7 in A Major, Op. 92: V. Allegro con brio (Arranged for Piano Four Hands)
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  additional property: Danceability
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isrc code: DEA141486105
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: ContentHash
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additional property: OTSVerificationAPI
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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: OTSTimestamp
  type: PropertyValue
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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

Tarantella in F Minor
type: MusicRecording
duration: PT1M19S
duration ms: 79000
explicit: false
by artist: Xaver Scharwenka
by artist: Joseph Moog
in album: Belle Epoque
  type: MusicAlbum
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genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8718aafa7be696ae80b4cd13999a33f67d403259db6183b0e411331be783fa. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ132426009.
  date published: 2026-07-30T12:06:10Z
audio: Tarantella in F Minor
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  additional property: Energy
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isrc code: FRZ132426009
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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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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Speechiness
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Acousticness
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Instrumentalness
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Liveness
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Valence (Positivity)
type: PropertyValue
value: 0.188

Loudness (dB)
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value: -24.911

Key Name
type: PropertyValue
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Mode Name
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value: Major

Impromptu No. 1, Op. 29, A-Flat Major - Welte-Mignon 455
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duration: PT3M56S
duration ms: 236046
explicit: false
by artist: Frédéric Chopin
by artist: Peter Phillips
by artist: Clotilde Kleeberg
in album: Schmetterling. Piano Music by Chopin, Schumann and Legacy
  type: MusicAlbum
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popularity: 11
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: DEPI82319203
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
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  value: https://blockstream.info/api/block-height/957122
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82319203
additional property: OTSTimestamp
  type: PropertyValue
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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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f94754439d5c0fc934c49eb4a5740588aecbaf3766451f571f44eb6ff6e7eb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEPI82319203.
  date published: 2026-07-08T03:39:04Z
audio: Impromptu No. 1, Op. 29, A-Flat Major - Welte-Mignon 455
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Romantic Piano Concertos, Vol. 1
type: MusicAlbum
date published: 2016-05-01

Russian Piano Concertos
type: MusicAlbum
date published: 2018-02-23

Idyll. Heritage Piano Music of Beethoven & Schumann
type: MusicAlbum
date published: 2024-08-22
track: Ecossaise WoO 23, 'Allegretto'
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  popularity: 9
  genre: classical
  genre: classical-piano
  genre: chamber-music
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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/DEPI82406033
  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
    encoding format: application/vnd.opentimestamps.ots
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Scharwenka: Piano Music, Vol. 4
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Scharwenka: Piano Music, Vol. 3
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Scharwenka: Deutsche Romantiker, Vol. 6
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Scharwenka: The Complete Chamber Music
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Scharwenka: Piano Music, Vol. 2
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Scharwenka: Piano Music, Vol. 1
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Scharwenka, X.: Piano Concertos Nos. 1 and 2
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Chopin: Works for Piano
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Scharwenka: The Piano Works, Vol. 3
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Xaver Scharwenka - piano & chamber music
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Miniatures
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Little Suite for Piano: IV. Waltz in G minor
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The School of Velocity, Op. 299: No. 9 in C Major, Molto allegro
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24 Preludes, Op. 34: No. 5 in D Major
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Am Stillen Herd. Opera Transcriptions from the Golden Age
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Toccata. Piano Essentials from the Golden Age
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Elle Danse. Piano Essentials from the Golden Age
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Caprice. Heritage Piano Music of Dvořák, Mendelssohn and Ravel
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Characterstucke. Heritage Piano Music of Bach, Mendelssohn and Sibelius
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Romanze. Heritage Chopin, Grieg & Tchaikovsky
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track: 6 Variations on "Nel cor più non mi sento" from "La molinara" by Paisiello, WoO 70: Var. 3
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6 Variations on "Nel cor più non mi sento" from "La molinara" by Paisiello, WoO 70: Var. 3
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6 Variations on "Nel cor più non mi sento" from "La molinara" by Paisiello, WoO 70: Var. 4
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6 Variations on "Nel cor più non mi sento" from "La molinara" by Paisiello, WoO 70: Var. 5
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6 Variations on "Nel cor più non mi sento" from "La molinara" by Paisiello, WoO 70: Var. 6
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11 Bagatelles, Op. 119: No. 5 in C Minor. Risoluto
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48 Esquisses, Op. 63, Book 3: No. 26, Petit air
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The Tale of Tsar Saltan: The Flight of the Bumblebee (Transcr. Rachmaninoff for Piano)
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Piano Sonata No. 16 in C Major, K. 545 "Sonata facile": III. Rondo. Allegretto
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Marie-Poème, S. 701b
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Responsorien und Antiphonen, S. 30: V. In Officio defunctorum: z. Responsorium 9a Reprise. Libera me, Domine, de morte
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Prole do bebê 1, W140: VII. O Polichinelo
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12 Monferrinas, Op. 49: VIII. Vivace assai
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24 Preludes in All Major and Minor Keys, Op. 102: No. 20 in A Minor
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2 Poèmes, Op. 63: No. 1, Masque. Allegretto
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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3 Morceaux, Op. 49: No. 3, Rêverie. Con finezza
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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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12 Variations for Violin and Piano on "La bergère Célimène", K. 359: Var. 3
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: 12 Variations for Violin and Piano on "La bergère Célimène", K. 359: Var. 3
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12 Variations for Violin and Piano on "La bergère Célimène", K. 359: Var. 4
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: 12 Variations for Violin and Piano on "La bergère Célimène", K. 359: Var. 4
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12 Variations for Violin and Piano on "La bergère Célimène", K. 359: Var. 7
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by artist: Cédric Tiberghien
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: 12 Variations for Violin and Piano on "La bergère Célimène", K. 359: Var. 7
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Beethoven: Symphony No. 7 & Great Fugue
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track: Symphony No. 7 in A Major, Op. 92: III. Allegretto (Arranged for Piano Four Hands)
track: Symphony No. 7 in A Major, Op. 92: IV. Presto (Arranged for Piano Four Hands)
track: Symphony No. 7 in A Major, Op. 92: II. Vivace (Arranged for Piano Four Hands)
track: Symphony No. 7 in A Major, Op. 92: V. Allegro con brio (Arranged for Piano Four Hands)

'Atalia' - Contemporary & Classical Masterworks, Vol. 1
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
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track: Ciudadano Sombra: III. - Live Recording
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Allegretto Wn 36
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Cantabile Wn 43
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Cantata BWV 147 (Piano Transcription by Hans-Günter Heumann): Jesu, Joy of Man Desiring
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Gavotte from Suite in G Minor BWV 822
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2 Pieces for 6 Hands - Romance
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11 Minuets KV. 176: Minuet III in E-Flat Major
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Gran Trio, Op. 119: III. Rondo
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Ave Maria (Transcription by Katrina Penman for Alto Flute and Piano)
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Six Studies in English Folk Song (Arr. Flute & Piano by Katrina Penman): I. Adagio
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Impromptus on a Theme by Clara Schumann, Op. 5: No. 4, Ziemlich Langsam
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Impromptus on a Theme by Clara Schumann, Op. 5: No. 9, -
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Carnaval, Op. 9: Eusebius - Welte-Mignon 321
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Impromptus on a Theme by Clara Schumann, Op. 5: No. 5, Lebhafter
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Impromptus on a Theme by Clara Schumann, Op. 5: Theme. Ziemlich Langsam
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Belle Epoque
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track: 3 Études de concert, S. 144: No. 2 in F Minor, La leggierezza
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track: Jeux d'eau, M. 30
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5 Pieces, Op. 75 "The Trees": No. 5 in B Minor, Granen (The Spruce)
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5 Pièces, Op. 109: No. 5 in D-Flat Major, Mélisande
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Jeux d'eau, M. 30
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Lamentations and Consolations, Op. 17: No. 5 in A Minor, Lamentation (Le mal du pays)
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Suite mignonne, Op. 39: I. Prelude
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Capriccio appassionato, Op. 52
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À la campagne, Op. 40: No. 1 in E Minor, Jeu des ondes (Wellen und Wogen). Etüde
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track: Variations on "La ci darem la mano", Op. 2: Var. 2. Veloce, ma accuratamente
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track: Variations on "La ci darem la mano", Op. 2: Coda. Alla Polacca
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track: Variations on a Theme of Chopin: Variation 4.
track: Variations on a Theme of Chopin: Variation 11. Lento
track: Variations on a Theme of Chopin: Variation 13. Largo
track: Variations on a Theme of Chopin: Variation 14. Moderato
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track: Variations on a Theme of Chopin: Variation 16. Lento
track: Variations on a Theme of Chopin: Variation 19. Allegro vivace
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track: Variations on a Rococo Theme, Op. 33: Introduction. Moderato quasi andante
track: Variations on a Rococo Theme, Op. 33: Theme. Moderato semplice
track: Variations on a Rococo Theme, Op. 33: Var. 1. Tempo della thema –
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track: Variations on a Rococo Theme, Op. 33: Var. 3. Andante sostenuto
track: Variations on a Rococo Theme, Op. 33: Var. 4. Andante grazioso –
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track: Variations on a Rococo Theme, Op. 33: Var. 6. Andante
track: Variations on a Rococo Theme, Op. 33: Var. 7 – Coda. Allegro vivo
track: Variations and Fugue on a Theme by Handel, Op. 24: Theme. Aria
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track: Variations and Fugue on a Theme by Handel, Op. 24: Var. 12. Soave
track: Variations and Fugue on a Theme by Handel, Op. 24: Var. 15
track: Variations and Fugue on a Theme by Handel, Op. 24: Var. 16

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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-21T17:07:33Z
audio: Variations on "La ci darem la mano", Op. 2: Var. 2. Veloce, ma accuratamente
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Variations on "La ci darem la mano", Op. 2: Var. 3. Sempre sostenuto
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by artist: Daniil Trifonov
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T18:50:38Z
audio: Variations on "La ci darem la mano", Op. 2: Var. 3. Sempre sostenuto
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Variations on "La ci darem la mano", Op. 2: Var. 4. Con bravura
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by artist: Daniil Trifonov
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genre: early-romantic-era
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T09:18:01Z
audio: Variations on "La ci darem la mano", Op. 2: Var. 4. Con bravura
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Variations on "La ci darem la mano", Op. 2: Var. 5. Adagio
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by artist: Daniil Trifonov
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T14:41:13Z
audio: Variations on "La ci darem la mano", Op. 2: Var. 5. Adagio
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Variations on "La ci darem la mano", Op. 2: Coda. Alla Polacca
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by artist: Daniil Trifonov
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T18:39:05Z
audio: Variations on "La ci darem la mano", Op. 2: Coda. Alla Polacca
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Variations on a Theme of Chopin: Theme
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: Variations on a Theme of Chopin: Theme
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Variations on a Theme of Chopin: Variation 4.
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T11:02:43Z
audio: Variations on a Theme of Chopin: Variation 4.
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Variations on a Theme of Chopin: Variation 11. Lento
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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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  date published: 2026-07-02T11:38:34Z
audio: Variations on a Theme of Chopin: Variation 11. Lento
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Variations on a Theme of Chopin: Variation 13. Largo
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by artist: Sergei Rachmaninoff
by artist: Vladimir Ashkenazy
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genre: classical-piano
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Variations on a Theme of Chopin: Variation 13. Largo
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Variations on a Theme of Chopin: Variation 14. Moderato
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by artist: Vladimir Ashkenazy
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genre: classical
genre: classical-piano
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T16:51:38Z
audio: Variations on a Theme of Chopin: Variation 14. Moderato
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Variations on a Theme of Chopin: Variation 15. Allegro scherzando
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by artist: Vladimir Ashkenazy
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genre: classical
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Variations on a Theme of Chopin: Variation 15. Allegro scherzando
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Variations on a Theme of Chopin: Variation 16. Lento
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by artist: Vladimir Ashkenazy
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genre: classical
genre: classical-piano
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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: 2026-07-02T16:51:38Z
audio: Variations on a Theme of Chopin: Variation 16. Lento
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Variations on a Theme of Chopin: Variation 19. Allegro vivace
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by artist: Vladimir Ashkenazy
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genre: classical
genre: classical-piano
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T16:51:38Z
audio: Variations on a Theme of Chopin: Variation 19. Allegro vivace
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Variations on a Theme of Chopin: Variation 20. Presto
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by artist: Vladimir Ashkenazy
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genre: classical
genre: classical-piano
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additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Variations on a Theme of Chopin: Variation 20. Presto
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Variations on a Theme of Chopin: Variation 21. Andante
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by artist: Vladimir Ashkenazy
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genre: classical
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additional property: CopyrightID
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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
  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 0x632e121049af2eac65f3c21073102a7fbc421843d63615e18725a14104b4fb6c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBBBA1140022.
  date published: 2026-07-06T06:56:49Z
audio: Variations on a Theme of Chopin: Variation 21. Andante
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Variations on a Rococo Theme, Op. 33: Introduction. Moderato quasi andante
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duration: PT0M54S
duration ms: 54333
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Mstislav Rostropovich
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: "A Set of Variations" - Romantic Composers
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isrc code: DEF056800361
additional property: CopyrightID
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additional property: OTSBitcoinBlock
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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
  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 0x5ff0ae2b38d6d185616ed50cc096903dbe4ea40aebc3c927b3f0e137ae9249ce. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF056800361.
  date published: 2026-07-02T03:55:08Z
audio: Variations on a Rococo Theme, Op. 33: Introduction. Moderato quasi andante
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Variations on a Rococo Theme, Op. 33: Theme. Moderato semplice
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duration: PT1M42S
duration ms: 102933
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Mstislav Rostropovich
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
isrc code: DEF056800362
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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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 0xa8752c22a24a6bd894c3b13a06c86204a062ba846da490dfa8fc7d428db8ee89. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056800362.
  date published: 2026-07-02T11:38:34Z
audio: Variations on a Rococo Theme, Op. 33: Theme. Moderato semplice
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Variations on a Rococo Theme, Op. 33: Var. 1. Tempo della thema –
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duration: PT0M52S
duration ms: 52306
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Mstislav Rostropovich
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
isrc code: DEF056800363
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: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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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 0x289e13e53f184cec20f8d62c0a6b7265da191f84ec14dea3c160e435714853e9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056800363.
  date published: 2026-07-02T11:38:34Z
audio: Variations on a Rococo Theme, Op. 33: Var. 1. Tempo della thema –
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Variations on a Rococo Theme, Op. 33: Var. 2. Tempo della thema
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duration: PT1M13S
duration ms: 73093
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Mstislav Rostropovich
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
isrc code: DEF056800364
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: OTSBitcoinBlock
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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
  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 0xe9009526f2a3e0f0d8f96ab0fb38d06b55c18ce900bca73ee6e9e03759f85290. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056800364.
  date published: 2026-07-02T11:38:34Z
audio: Variations on a Rococo Theme, Op. 33: Var. 2. Tempo della thema
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Variations on a Rococo Theme, Op. 33: Var. 3. Andante sostenuto
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duration ms: 239000
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Mstislav Rostropovich
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
isrc code: DEF056800365
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: OTSBitcoinBlock
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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
  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 0x84649b2cbfd47b5e353789a7da62416861b0de89705dcd2ef46a6f6dd85da2d5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056800365.
  date published: 2026-07-02T11:38:34Z
audio: Variations on a Rococo Theme, Op. 33: Var. 3. Andante sostenuto
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Variations on a Rococo Theme, Op. 33: Var. 4. Andante grazioso –
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duration ms: 113333
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Mstislav Rostropovich
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
isrc code: DEF056800366
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: Variations on a Rococo Theme, Op. 33: Var. 4. Andante grazioso –
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Variations on a Rococo Theme, Op. 33: Var. 5. Allegro moderato
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by artist: Pyotr Ilyich Tchaikovsky
by artist: Mstislav Rostropovich
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
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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 0x15747f56fd08bb81d02dc60cc336a8b6bcc245f3618efd88f226707d16042cc5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056800367.
  date published: 2026-07-02T11:38:34Z
audio: Variations on a Rococo Theme, Op. 33: Var. 5. Allegro moderato
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Variations on a Rococo Theme, Op. 33: Var. 6. Andante
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duration: PT2M52S
duration ms: 172333
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by artist: Pyotr Ilyich Tchaikovsky
by artist: Mstislav Rostropovich
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: "A Set of Variations" - Romantic Composers
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isrc code: DEF056800368
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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 0x9d4e694794cdd7683d28b26004c49e5f7da5f1ffb3906a1028a8c36326981ba0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEF056800368.
  date published: 2026-07-02T16:51:38Z
audio: Variations on a Rococo Theme, Op. 33: Var. 6. Andante
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Variations on a Rococo Theme, Op. 33: Var. 7 – Coda. Allegro vivo
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duration: PT2M1S
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by artist: Pyotr Ilyich Tchaikovsky
by artist: Mstislav Rostropovich
by artist: Berliner Philharmoniker
by artist: Herbert von Karajan
in album: "A Set of Variations" - Romantic Composers
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isrc code: DEF056800369
additional property: CopyrightID
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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
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251087db1b4f620361ba5f4c8b656d34c5606712b9b4daf00735411987b551d2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEF056800369.
  date published: 2026-07-02T16:51:38Z
audio: Variations on a Rococo Theme, Op. 33: Var. 7 – Coda. Allegro vivo
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Variations and Fugue on a Theme by Handel, Op. 24: Theme. Aria
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by artist: Seta Tanyel
in album: "A Set of Variations" - Romantic Composers
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genre: classical
genre: german-romanticism
genre: late-romantic-era
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c43b7b49233d47f7f41357e72048637fa9b7b3763c33ddf1968856f317f53d. 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/GBAJY0420101.
  date published: 2026-07-08T03:53:27Z
audio: Variations and Fugue on a Theme by Handel, Op. 24: Theme. Aria
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Variations and Fugue on a Theme by Handel, Op. 24: Var. 1
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by artist: Seta Tanyel
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
genre: classical
genre: german-romanticism
genre: late-romantic-era
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0902883dcb99856bc1aadad4f1e27f1a941eb2cd3b0a32f0fe0c5311f54b70e0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBAJY0420102.
  date published: 2026-07-06T07:53:57Z
audio: Variations and Fugue on a Theme by Handel, Op. 24: Var. 1
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Variations and Fugue on a Theme by Handel, Op. 24: Var. 2. Animato
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by artist: Seta Tanyel
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  date published: 2025-05-20
genre: classical
genre: german-romanticism
genre: late-romantic-era
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b936bf750b18ae3aa79aacf00dab2fadd4c7ec6bf7bfc099475e2101264296. 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/GBAJY0420103.
  date published: 2026-07-08T03:20:19Z
audio: Variations and Fugue on a Theme by Handel, Op. 24: Var. 2. Animato
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Variations and Fugue on a Theme by Handel, Op. 24: Var. 3. Dolce
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duration: PT0M52S
duration ms: 52706
explicit: false
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by artist: Seta Tanyel
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
genre: classical
genre: german-romanticism
genre: late-romantic-era
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additional property: CopyrightID
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77142ee31f8eb3858477a453dade6be97851f928b6528bcdee3e59bed8f06156. 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/GBAJY0420104.
  date published: 2026-07-08T03:20:19Z
audio: Variations and Fugue on a Theme by Handel, Op. 24: Var. 3. Dolce
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Variations and Fugue on a Theme by Handel, Op. 24: Var. 4. Risoluto
type: MusicRecording
duration: PT0M49S
duration ms: 49773
explicit: false
by artist: Johannes Brahms
by artist: Seta Tanyel
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: GBAJY0420105
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-06-28T06:08:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x977c0aef0686f89cc041a9ae76752acecd79d10b2ad691012fc2a39a7b94edda
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0420105
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977c0aef0686f89cc041a9ae76752acecd79d10b2ad691012fc2a39a7b94edda. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0420105.
  date published: 2026-07-08T03:22:41Z
audio: Variations and Fugue on a Theme by Handel, Op. 24: Var. 4. Risoluto
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 105.978
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.533
  additional property: Energy
    type: PropertyValue
    value: 0.616
  additional property: Speechiness
    type: PropertyValue
    value: 0.058
  additional property: Acousticness
    type: PropertyValue
    value: 0.965
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.858
  additional property: Liveness
    type: PropertyValue
    value: 0.166
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.86
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.808
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
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Variations and Fugue on a Theme by Handel, Op. 24: Var. 5. Espressivo
type: MusicRecording
duration: PT1M24S
duration ms: 84720
explicit: false
by artist: Johannes Brahms
by artist: Seta Tanyel
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: GBAJY0420106
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-28T06:07:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd255272edd15c5477c9593d9c7442dbc1a3392437d1f2afa0efc24603390c95d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0420106
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd255272edd15c5477c9593d9c7442dbc1a3392437d1f2afa0efc24603390c95d. 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/GBAJY0420106.
  date published: 2026-07-08T03:53:27Z
audio: Variations and Fugue on a Theme by Handel, Op. 24: Var. 5. Espressivo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 93.462
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.403
  additional property: Energy
    type: PropertyValue
    value: 0.014
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.899
  additional property: Liveness
    type: PropertyValue
    value: 0.117
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.153
  additional property: Loudness (dB)
    type: PropertyValue
    value: -34.422
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Variations and Fugue on a Theme by Handel, Op. 24: Var. 6
type: MusicRecording
duration: PT1M18S
duration ms: 78826
explicit: false
by artist: Johannes Brahms
by artist: Seta Tanyel
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: GBAJY0420107
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-28T06:08:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8ee93712abc41e83d7da41616aa9fc9c711bbfa0ab734696f300c601954aff0c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956894
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956894
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0420107
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T07:53:57Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee93712abc41e83d7da41616aa9fc9c711bbfa0ab734696f300c601954aff0c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBAJY0420107.
  date published: 2026-07-06T07:53:57Z
audio: Variations and Fugue on a Theme by Handel, Op. 24: Var. 6
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.87
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.361
  additional property: Energy
    type: PropertyValue
    value: 0.02
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.927
  additional property: Liveness
    type: PropertyValue
    value: 0.084
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.329
  additional property: Loudness (dB)
    type: PropertyValue
    value: -38.226
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Variations and Fugue on a Theme by Handel, Op. 24: Var. 7. Con vivacita
type: MusicRecording
duration: PT0M36S
duration ms: 36080
explicit: false
by artist: Johannes Brahms
by artist: Seta Tanyel
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: GBAJY0420108
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-27T09:11:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xea1e882530bdf1dc3d8146e40be3518826aff6922927b2c70be29c48d64cfd02
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0420108
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1e882530bdf1dc3d8146e40be3518826aff6922927b2c70be29c48d64cfd02. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0420108.
  date published: 2026-07-08T03:22:41Z
audio: Variations and Fugue on a Theme by Handel, Op. 24: Var. 7. Con vivacita
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 122.867
  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: 0.571
  additional property: Energy
    type: PropertyValue
    value: 0.39
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.952
  additional property: Liveness
    type: PropertyValue
    value: 0.155
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.883
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.879
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Variations and Fugue on a Theme by Handel, Op. 24: Var. 8
type: MusicRecording
duration: PT0M38S
duration ms: 38560
explicit: false
by artist: Johannes Brahms
by artist: Seta Tanyel
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: GBAJY0420109
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-28T06:07:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4d0002a6b351b3a1c1650f9f8c6a6d0c0eed9e85cdd7c22ea2a6e2794268f119
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957061
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957061
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0420109
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T16:07:00Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0002a6b351b3a1c1650f9f8c6a6d0c0eed9e85cdd7c22ea2a6e2794268f119. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBAJY0420109.
  date published: 2026-07-07T16:07:00Z
audio: Variations and Fugue on a Theme by Handel, Op. 24: Var. 8
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.331
  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: 0.484
  additional property: Energy
    type: PropertyValue
    value: 0.305
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.98
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.905
  additional property: Liveness
    type: PropertyValue
    value: 0.149
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.44
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.414
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Variations and Fugue on a Theme by Handel, Op. 24: Var. 9. Poco sostenuto
type: MusicRecording
duration: PT1M28S
duration ms: 88173
explicit: false
by artist: Johannes Brahms
by artist: Seta Tanyel
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: GBAJY0420110
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-28T06:11:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x179bb2b6ac087bd56208061f2579371313db103e2a2f1de40976bc3a6def3fbf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY0420110
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179bb2b6ac087bd56208061f2579371313db103e2a2f1de40976bc3a6def3fbf. 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/GBAJY0420110.
  date published: 2026-07-08T03:53:27Z
audio: Variations and Fugue on a Theme by Handel, Op. 24: Var. 9. Poco sostenuto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 81.424
  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: 0.606
  additional property: Energy
    type: PropertyValue
    value: 0.009
  additional property: Speechiness
    type: PropertyValue
    value: 0.072
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.894
  additional property: Liveness
    type: PropertyValue
    value: 0.11
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.211
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.671
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Variations and Fugue on a Theme by Handel, Op. 24: Var. 10. Energico
type: MusicRecording
duration: PT0M39S
duration ms: 39320
explicit: false
by artist: Johannes Brahms
by artist: Seta Tanyel
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: GBAJY0420111
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-28T06:10:42+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x77724ef624e95ba19854089e1cfe39a652d7cfca52bcaee0942df7f5559d9422
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/GBAJY0420111
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77724ef624e95ba19854089e1cfe39a652d7cfca52bcaee0942df7f5559d9422. 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/GBAJY0420111.
  date published: 2026-07-08T03:20:19Z
audio: Variations and Fugue on a Theme by Handel, Op. 24: Var. 10. Energico
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.523
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.569
  additional property: Energy
    type: PropertyValue
    value: 0.315
  additional property: Speechiness
    type: PropertyValue
    value: 0.057
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.772
  additional property: Liveness
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Variations and Fugue on a Theme by Handel, Op. 24: Var. 11. Dolce
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by artist: Seta Tanyel
in album: "A Set of Variations" - Romantic Composers
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genre: classical
genre: german-romanticism
genre: late-romantic-era
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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 0xe69bd0d8f5fdc3631e7428e425a6ee59b4a46b461c7e247331094a4334bc52e0. 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/GBAJY0420112.
  date published: 2026-07-08T03:53:27Z
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Variations and Fugue on a Theme by Handel, Op. 24: Var. 12. Soave
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duration: PT1M13S
duration ms: 73213
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by artist: Johannes Brahms
by artist: Seta Tanyel
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: GBAJY0420113
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSBitcoinBlock
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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 0x5f641b059defe83618ccdddbd577317801fca872701d7d4b025952073e51d433. 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/GBAJY0420113.
  date published: 2026-07-08T03:53:27Z
audio: Variations and Fugue on a Theme by Handel, Op. 24: Var. 12. Soave
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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: Acousticness
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Variations and Fugue on a Theme by Handel, Op. 24: Var. 15
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duration ms: 48026
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by artist: Seta Tanyel
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: GBAJY0420116
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
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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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea212cb5a98969a8cce0b728aeaef840a20903aeef98b4bc25a28c4d64f6f73. 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/GBAJY0420116.
  date published: 2026-07-08T03:20:19Z
audio: Variations and Fugue on a Theme by Handel, Op. 24: Var. 15
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  additional property: Mode (Major/Minor)
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Variations and Fugue on a Theme by Handel, Op. 24: Var. 16
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duration: PT0M35S
duration ms: 35493
explicit: false
by artist: Johannes Brahms
by artist: Seta Tanyel
in album: "A Set of Variations" - Romantic Composers
  type: MusicAlbum
  date published: 2025-05-20
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: GBAJY0420117
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
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96db0ee9b8596ab1b5aa89d960984ff7f44ab94623ff4dc526a9cce3ba71c09. 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/GBAJY0420117.
  date published: 2026-07-08T03:53:27Z
audio: Variations and Fugue on a Theme by Handel, Op. 24: Var. 16
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  additional property: Acousticness
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