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Flute Concerto in G Minor, Op. 10, No. 2, RV 439 - "La notte": VI. Allegro
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Mazurka No. 40 In F Minor Op. 63 No. 2
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 1
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 6
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12 Variations in C Major on "Ah, vous dirai-je Maman", K. 265: Variation No. 10
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Variations on a Theme of Chopin, Op. 22: Var. 4 in C Minor. L'istesso tempo
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A Classical Affair
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A Day with Mozart
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Piano Concerto No. 7 in F Major, K. 242: II. Adagio
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subject of: OpenTimestamps Proof of Existence
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Violin Concerto No. 3 in G Major, K. 216: II. Adagio
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Piano Sonata No. 12 in F Major, K. 332: II. Adagio
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Serenade No. 10 in B-Flat Major, K. 361 "Gran Partita": III. Adagio
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Piano Concerto No. 26 in D Major, K. 537 "Coronation": II. Larghetto
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Adagio in B Minor, K. 540
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Piano Sonata No. 4 in E-Flat Major, K. 282: I. Adagio
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Flute Quartet No. 1 in D Major, K. 285: II. Adagio
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Adagio in C Major, K. 356
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Piano Concerto No. 27 in B-Flat Major, K. 595: II. Larghetto
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Adagio and Fugue in C Minor, K. 546
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Mozart for Studying & Focus
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track: Piano Concerto No. 24 in C Minor K. 491 (Cadenza by Pletnev): II. Larghetto
track: Serenade No. 10 in B-Flat Major, K. 361 "Gran Partita": I. Largo - Molto allegro
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OTSBitcoinBlock
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value: 956351

OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/956351

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8200326

OTSTimestamp
type: PropertyValue
value: 2026-07-02T11:38:34Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb2e687bd3ffa36ba88c9006ccba28fbbe72448d175f49e0c70332363f77a6b. 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/GBAYC8200326.
date published: 2026-07-02T11:38:34Z

Piano Sonata No. 13 in B-Flat Major, K. 333: I. Allegro
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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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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additional property: Key Name
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additional property: Mode Name
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Violin Concerto No. 3 in G Major, K. 216: II. Adagio
type: MusicRecording
duration: PT7M33S
duration ms: 453080
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Christian Tetzlaff
by artist: The Deutsche Kammerphilharmonie Bremen
in album: Mozart for Studying & Focus
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  date published: 2022-03-05
genre: classical
genre: classical-era
isrc code: GBAYC9500592
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9500592
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
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 0x230a98521f099a5bd8e9916fa2804d5f70c33791a0499866f435cdf2ed2ef41a. 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/GBAYC9500592.
  date published: 2026-07-06T06:56:49Z
audio: Violin Concerto No. 3 in G Major, K. 216: II. Adagio
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  additional property: Energy
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Piano Concerto No. 24 in C Minor K. 491 (Cadenza by Pletnev): II. Larghetto
type: MusicRecording
duration: PT8M23S
duration ms: 503573
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Mikhail Pletnev
by artist: The Deutsche Kammerphilharmonie Bremen
in album: Mozart for Studying & Focus
  type: MusicAlbum
  date published: 2022-03-05
genre: classical
genre: classical-era
isrc code: GBAYC9101078
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9101078
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
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 0xcbe7e7e5ce4241b995ead28edf8b1ac298fa7f72e7d8a50dcddb83e86541b5a3. 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/GBAYC9101078.
  date published: 2026-07-06T06:56:49Z
audio: Piano Concerto No. 24 in C Minor K. 491 (Cadenza by Pletnev): II. Larghetto
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Energy
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  additional property: Speechiness
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Serenade No. 10 in B-Flat Major, K. 361 "Gran Partita": I. Largo - Molto allegro
type: MusicRecording
duration: PT8M45S
duration ms: 525786
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Zdeněk Košler
by artist: Slovak Philharmonic
in album: Mozart for Studying & Focus
  type: MusicAlbum
  date published: 2022-03-05
genre: classical
genre: classical-era
isrc code: SEWDL0774901
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bef1bb70013915832f9802fb5d442b51d33f38833c13d86f4958cad2fc4ade. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SEWDL0774901.
  date published: 2026-07-22T11:35:32Z
audio: Serenade No. 10 in B-Flat Major, K. 361 "Gran Partita": I. Largo - Molto allegro
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Speechiness
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  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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Serenade No. 10 in B-Flat Major, K. 361 "Gran Partita": III. Adagio
type: MusicRecording
duration: PT5M50S
duration ms: 350560
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Berlin Philharmonic Wind Ensemble
in album: Mozart for Studying & Focus
  type: MusicAlbum
  date published: 2022-03-05
genre: classical
genre: classical-era
isrc code: GBAYC0501649
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899bd61d657035a564d91830e04657151736fa9c6f9b59818711bfea49aa0825. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBAYC0501649.
  date published: 2026-07-06T01:25:57Z
audio: Serenade No. 10 in B-Flat Major, K. 361 "Gran Partita": III. Adagio
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Piano Concerto No. 20 in D Minor, K. 466: II. Romanze
type: MusicRecording
duration: PT8M23S
duration ms: 503840
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Sir Roger Norrington
by artist: Melvyn Tan
by artist: London Classical Players
in album: Mozart for Studying & Focus
  type: MusicAlbum
  date published: 2022-03-05
genre: classical
genre: classical-era
isrc code: GBAYC9100195
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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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 0xef441951a97c1bba468c3dd7794c6abacea75c44918e9b3236af91fd335ff129. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBAYC9100195.
  date published: 2026-07-07T14:41:13Z
audio: Piano Concerto No. 20 in D Minor, K. 466: II. Romanze
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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Piano Concerto No. 23 in A Major, K. 488: II. Adagio
type: MusicRecording
duration: PT6M17S
duration ms: 377973
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Mikhail Pletnev
by artist: The Deutsche Kammerphilharmonie Bremen
in album: Mozart for Studying & Focus
  type: MusicAlbum
  date published: 2022-03-05
genre: classical
genre: classical-era
isrc code: GBAYC9100203
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 0xeb6c7aba1d29250b130079ace964c5b58eb8730eef061d16ab9c96ba55fb77e0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBAYC9100203.
  date published: 2026-07-06T07:16:32Z
audio: Piano Concerto No. 23 in A Major, K. 488: 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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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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Serenade No. 11 in E-Flat Major, K. 375: III. Adagio
type: MusicRecording
duration: PT5M59S
duration ms: 359733
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Berlin Philharmonic Wind Ensemble
in album: Mozart for Studying & Focus
  type: MusicAlbum
  date published: 2022-03-05
genre: classical
genre: classical-era
isrc code: GBAYC0501667
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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subject of: OpenTimestamps Proof of Existence
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audio: Serenade No. 11 in E-Flat Major, K. 375: III. Adagio
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Violin Concerto No. 5 in A Major "Turkish" K. 219: II. Adagio
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subject of: OpenTimestamps Proof of Existence
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Piano Concerto No. 7 in F Major, K. 242: II. Adagio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T14:04:01Z
audio: Piano Concerto No. 7 in F Major, K. 242: II. Adagio
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Piano Sonata No. 12 in F Major, K. 332: II. Adagio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Piano Sonata No. 12 in F Major, K. 332: II. Adagio
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Piano Concerto No. 26 in D Major, K. 537 "Coronation": II. Larghetto
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  date published: 2026-07-08T03:53:27Z
audio: Piano Concerto No. 26 in D Major, K. 537 "Coronation": II. Larghetto
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Adagio in B Minor, K. 540
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  date published: 2026-07-08T03:22:41Z
audio: Adagio in B Minor, K. 540
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Flute and Harp Concerto in C Major, K. 299: II. Andantino
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audio: Flute and Harp Concerto in C Major, K. 299: II. Andantino
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Piano Sonata No. 4 in E-Flat Major, K. 282: I. Adagio
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subject of: OpenTimestamps Proof of Existence
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audio: Piano Sonata No. 4 in E-Flat Major, K. 282: I. Adagio
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Flute Quartet No. 1 in D Major, K. 285: II. Adagio
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subject of: OpenTimestamps Proof of Existence
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Adagio in C Major, K. 356
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Adagio in C Major, K. 356
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Piano Concerto No. 27 in B-Flat Major, K. 595: II. Larghetto
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subject of: OpenTimestamps Proof of Existence
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audio: Piano Concerto No. 27 in B-Flat Major, K. 595: II. Larghetto
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Mozart zur Entspannung
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    date published: 2026-07-02T05:09:12Z
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track: Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": II. Romanze. Andante
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T05:09:12Z
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track: Piano Sonata No. 12 in F Major, K. 332: II. Adagio
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track: Symphony No. 39 in E-Flat Major, K. 543: II. Andante con moto
track: Piano Sonata No. 13 in B-Flat Major, K. 333: II. Andante cantabile
track: Serenade No. 11 in E-Flat Major, K. 375: III. Adagio
track: Adagio in C Major, K. 356
track: Violin Concerto No. 3 in G Major, K. 216: II. Adagio
track: Piano Quartet in G Minor, K. 478: II. Andante
track: Serenade No. 10 in B-Flat Major, K. 361 "Gran Partita": III. Adagio
track: Piano Concerto No. 20 in D Minor, K. 466: II. Romanze
track: Piano Concerto No. 24 in C Minor K. 491 (Cadenza by Pletnev): II. Larghetto
track: Flute Quartet No. 1 in D Major, K. 285: II. Adagio
track: Piano Concerto No. 7 in F Major, K. 242: II. Adagio
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track: Piano Concerto No. 26 in D Major, K. 537 "Coronation": II. Larghetto
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OpenTimestamps Proof of Existence
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date published: 2026-07-02T05:09:12Z

Piano Sonata No. 12 in F Major, K. 332: II. Adagio
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Symphony No. 39 in E-Flat Major, K. 543: II. Andante con moto
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subject of: OpenTimestamps Proof of Existence
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Piano Sonata No. 13 in B-Flat Major, K. 333: II. Andante cantabile
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subject of: OpenTimestamps Proof of Existence
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Serenade No. 11 in E-Flat Major, K. 375: III. Adagio
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Adagio in C Major, K. 356
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  date published: 2026-07-02T16:51:38Z
audio: Adagio in C Major, K. 356
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Violin Concerto No. 3 in G Major, K. 216: II. Adagio
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  date published: 2026-07-02T16:51:38Z
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Piano Quartet in G Minor, K. 478: II. Andante
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Serenade No. 10 in B-Flat Major, K. 361 "Gran Partita": III. Adagio
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Piano Concerto No. 20 in D Minor, K. 466: II. Romanze
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Piano Concerto No. 24 in C Minor K. 491 (Cadenza by Pletnev): II. Larghetto
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Flute Quartet No. 1 in D Major, K. 285: II. Adagio
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Piano Concerto No. 7 in F Major, K. 242: II. Adagio
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Piano Sonata No. 4 in E-Flat Major, K. 282: I. Adagio
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Piano Concerto No. 26 in D Major, K. 537 "Coronation": II. Larghetto
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Piano Concerto No. 27 in B-Flat Major, K. 595: II. Larghetto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Piano Concerto No. 27 in B-Flat Major, K. 595: II. Larghetto
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Piano Concerto No. 23 in A Major, K. 488: II. Adagio
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by artist: Sinfonia Varsovia
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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: Piano Concerto No. 23 in A Major, K. 488: II. Adagio
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Mozart Melodies
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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
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track: Piano Sonata No. 11 in A Major K. 331: III. Alla Turca
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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track: Clarinet Concerto in A Major, K. 622: II. Adagio
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  subject of: OpenTimestamps Proof of Existence
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track: Requiem in D Minor, K. 626: III. Sequenz, Lacrimosa dies illa

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OpenTimestamps Proof of Existence
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date published: 2026-07-02T03:30:09Z

Clarinet Concerto in A Major, K. 622: II. Adagio
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Requiem in D Minor, K. 626: III. Sequenz, Lacrimosa dies illa
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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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The Mozart Effect
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  by artist: Academy of St. Martin in the Fields
  in album: The Mozart Effect
    type: MusicAlbum
    date published: 2021-04-17
  popularity: 6
  genre: classical
  genre: classical-era
  isrc code: GBAYC9003017
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-18T14:03:47+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb492139493bf1d6268d4b6b01e3179f381e1fbd8fc855a4b1cc66fac7e0f4767
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    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/GBAYC9003017
  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 0xb492139493bf1d6268d4b6b01e3179f381e1fbd8fc855a4b1cc66fac7e0f4767. 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/GBAYC9003017.
    date published: 2026-07-08T03:53:27Z
  audio: Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": II. Romanze (Andante)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 152.495
    additional property: Musical Key
      type: PropertyValue
      value: 0
    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: 0.258
    additional property: Energy
      type: PropertyValue
      value: 0.059
    additional property: Speechiness
      type: PropertyValue
      value: 0.045
    additional property: Acousticness
      type: PropertyValue
      value: 0.966
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.096
    additional property: Liveness
      type: PropertyValue
      value: 0.081
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.136
    additional property: Loudness (dB)
      type: PropertyValue
      value: -25.445
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
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track: Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": I. Allegro
  type: MusicRecording
  duration: PT5M54S
  duration ms: 354506
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Sir Neville Marriner
  by artist: Academy of St. Martin in the Fields
  in album: The Mozart Effect
    type: MusicAlbum
    date published: 2021-04-17
  popularity: 1
  genre: classical
  genre: classical-era
  isrc code: GBAYC9003016
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": I. Allegro
track: Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": III. Menuetto (Allegretto)
track: Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": IV. Rondo (Allegro)

CopyrightRegisteredAt
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value: 2026-06-19T09:05:07+00:00

CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0xb5ce5086cea50b652256e50b4668ee0dc9d9d9b28c03c584fb3878fbcadd8888

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 957124

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957124

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9003016

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:53:27Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ce5086cea50b652256e50b4668ee0dc9d9d9b28c03c584fb3878fbcadd8888. 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/GBAYC9003016.
date published: 2026-07-08T03:53:27Z

Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": I. Allegro
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 144.564
additional property: Musical Key
  type: PropertyValue
  value: 7
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.517
additional property: Energy
  type: PropertyValue
  value: 0.176
additional property: Speechiness
  type: PropertyValue
  value: 0.048
additional property: Acousticness
  type: PropertyValue
  value: 0.969
additional property: Instrumentalness
  type: PropertyValue
  value: 0.916
additional property: Liveness
  type: PropertyValue
  value: 0.053
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.403
additional property: Loudness (dB)
  type: PropertyValue
  value: -19.314
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Major

Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": III. Menuetto (Allegretto)
type: MusicRecording
duration: PT1M58S
duration ms: 118360
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Sir Neville Marriner
by artist: Academy of St. Martin in the Fields
in album: The Mozart Effect
  type: MusicAlbum
  date published: 2021-04-17
popularity: 1
genre: classical
genre: classical-era
isrc code: GBAYC9003018
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-25T16:57:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x10309507f92b92babe3fa00425777fd1c09d539b6729c6dafd1b8bf979635f28
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/GBAYC9003018
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 0x10309507f92b92babe3fa00425777fd1c09d539b6729c6dafd1b8bf979635f28. 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/GBAYC9003018.
  date published: 2026-07-08T03:22:41Z
audio: Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": III. Menuetto (Allegretto)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 146.215
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.331
  additional property: Energy
    type: PropertyValue
    value: 0.098
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.944
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.813
  additional property: Liveness
    type: PropertyValue
    value: 0.141
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.549
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.699
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": IV. Rondo (Allegro)
type: MusicRecording
duration: PT3M1S
duration ms: 181760
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Sir Neville Marriner
by artist: Academy of St. Martin in the Fields
in album: The Mozart Effect
  type: MusicAlbum
  date published: 2021-04-17
popularity: 1
genre: classical
genre: classical-era
isrc code: GBAYC9003019
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T09:54:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1adfcabc20d5fbd593d54479412ab11c6ddcc1396f91e546e35c8dc371da54a5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9003019
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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 0x1adfcabc20d5fbd593d54479412ab11c6ddcc1396f91e546e35c8dc371da54a5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9003019.
  date published: 2026-07-08T08:56:20Z
audio: Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": IV. Rondo (Allegro)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.647
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.496
  additional property: Energy
    type: PropertyValue
    value: 0.21
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.947
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.906
  additional property: Liveness
    type: PropertyValue
    value: 0.06
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.639
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.338
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

This Is Mozart
type: MusicAlbum
date published: 2021-05-15
track: Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": II. Romanze (Andante)
  type: MusicRecording
  duration: PT5M44S
  duration ms: 344600
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Sir Neville Marriner
  by artist: Academy of St. Martin in the Fields
  in album: This Is Mozart
    type: MusicAlbum
    date published: 2021-05-15
  popularity: 2
  genre: classical
  genre: classical-era
  isrc code: GBAYC9003017
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-18T14:03:47+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb492139493bf1d6268d4b6b01e3179f381e1fbd8fc855a4b1cc66fac7e0f4767
  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/GBAYC9003017
  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 0xb492139493bf1d6268d4b6b01e3179f381e1fbd8fc855a4b1cc66fac7e0f4767. 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/GBAYC9003017.
    date published: 2026-07-08T03:53:27Z
  audio: Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": II. Romanze (Andante)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 152.495
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.258
    additional property: Energy
      type: PropertyValue
      value: 0.059
    additional property: Speechiness
      type: PropertyValue
      value: 0.045
    additional property: Acousticness
      type: PropertyValue
      value: 0.966
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.096
    additional property: Liveness
      type: PropertyValue
      value: 0.081
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.136
    additional property: Loudness (dB)
      type: PropertyValue
      value: -25.445
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Don Giovanni, K. 527, Act I: Sinfonia (Orchestra)
  type: MusicRecording
  duration: PT6M21S
  duration ms: 381933
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Riccardo Muti
  by artist: Wiener Philharmoniker
  in album: This Is Mozart
    type: MusicAlbum
    date published: 2021-05-15
  popularity: 1
  genre: classical
  genre: classical-era
  isrc code: GBAYC9004362
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-17T22:22:30+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3018003825faf3dde0bdd1043af4df7db618b87a7298a56f2c01b6b76bfecbbe
  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/GBAYC9004362
  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 0x3018003825faf3dde0bdd1043af4df7db618b87a7298a56f2c01b6b76bfecbbe. 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/GBAYC9004362.
    date published: 2026-07-08T03:22:41Z
  audio: Don Giovanni, K. 527, Act I: Sinfonia (Orchestra)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 139.238
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.271
    additional property: Energy
      type: PropertyValue
      value: 0.075
    additional property: Speechiness
      type: PropertyValue
      value: 0.036
    additional property: Acousticness
      type: PropertyValue
      value: 0.946
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.914
    additional property: Liveness
      type: PropertyValue
      value: 0.147
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.278
    additional property: Loudness (dB)
      type: PropertyValue
      value: -25.37
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Fugue in G Minor, K. 401
  type: MusicRecording
  duration: PT5M21S
  duration ms: 321200
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Güher Pekinel
  by artist: Süher Pekinel
  in album: This Is Mozart
    type: MusicAlbum
    date published: 2021-05-15
  popularity: 1
  genre: classical
  genre: classical-era
  isrc code: DEA800115814
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Fugue in G Minor, K. 401
track: Symphony No. 20 in D Major, K. 133: III. Menuetto & Trio
track: Serenade No. 11 in E-Flat Major, K. 375: III. Adagio

CopyrightRegisteredAt
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CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x05c2ac7f89d52533fab6acbec0852ad2905af657e75eb6c1edc8c524867c7955

OTSHash
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OTSBitcoinBlock
type: PropertyValue
value: 957120

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957120

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA800115814

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:22:41Z

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

OpenTimestamps Proof of Existence
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Goldberg Variations, BWV 988: Aria
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Serenade No. 10 in B-Flat Major, K. 361 "Gran Partita": III. Adagio
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
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Fantasia on Greensleeves
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Liebesträume, S. 541: No. 3 in A-Flat Major
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Façades
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Canon and Gigue in D Major for 3 Violins and Continuo, P. 37: I. Canon (Orchestral Version)
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3 Songs, Op. 7: No. 1, Après un rêve
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Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
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Deux Arabesques, L. 66: I. Andantino con moto in E Major
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Six Piano Pieces, Op. 118: II. Intermezzo in A Major (Andante teneramente)
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Adagio for Strings, Op. 11
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3 Gymnopedies: III. Lent et grave
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La Mer, L. 109: I. De l'aube à midi sur la mer
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Hits of Mozart
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Mozart at the Office
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Piano Sonata No. 16 in C Major, K. 545 "Sonata facile": III. Rondo (Allegretto) - Live
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Die Zauberflöte, K.620 / Act 1: "Der Vogelfänger bin ich ja"
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Die Zauberflöte, K.620 / Act 1: "Wie stark ist nicht dein Zauberton"
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Piano Concerto No. 21 in C Major, K. 467: II. Andante
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100 Best Chamber Music
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track: Vivaldi: The Four Seasons, Violin Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": II. Largo
track: Mozart: Eine kleine Nachtmusik, K. 525: III. Menuetto. Allegretto
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subject of: OpenTimestamps Proof of Existence
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audio: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. Poco adagio, cantabile (Excerpt)
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Beethoven: String Quartet No. 1 in F Major, Op. 18 No. 1: II. Adagio affettuoso ed appassionato (Excerpt)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
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Mozart: Divertimento No. 17 in D Major, K. 334/320b: III. Menuetto - Trio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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Beethoven: Cello Sonata No. 3 in A Major, Op. 69: I. Allegro ma non tanto (Excerpt)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Beethoven: Cello Sonata No. 3 in A Major, Op. 69: I. Allegro ma non tanto (Excerpt)
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Beethoven: String Quartet No. 4 in C Minor, Op. 18 No. 4: III. Menuetto. Allegretto
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  date published: 2026-07-08T03:53:27Z
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Boccherini: String Quintet in E Major, Op. 11 No. 5, G. 275: III. Minuetto
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  date published: 2026-07-08T03:22:41Z
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Beethoven: Piano Trio No. 5 in D Major, Op. 70 No. 1 "Ghost": II. Largo assai ed espressivo (Excerpt)
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  date published: 2026-07-08T03:53:27Z
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Beethoven: Violin Sonata No. 9 in A Major, Op. 47 "Kreutzer": I. Adagio sostenuto - Presto (Excerpt)
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audio: Beethoven: Violin Sonata No. 9 in A Major, Op. 47 "Kreutzer": I. Adagio sostenuto - Presto (Excerpt)
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Bach, JS: Viola da Gamba Sonata No. 3 in G Minor, BWV 1029: I. Vivace
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subject of: OpenTimestamps Proof of Existence
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Haydn: String Quartet in B-Flat Major, Op. 76 No. 4, Hob. III:78 "Sunrise": I. Allegro con spirito (Excerpt)
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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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Schubert: String Quartet No. 13 in A Minor, Op. 29, D. 804 "Rosamunde": II. Andante
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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Lachrimae Antiquae from Lachrimae, or Seaven Teares
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audio: Lachrimae Antiquae from Lachrimae, or Seaven Teares
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Mozart: Clarinet Quintet in A Major, K. 581 "Stadler": I. Allegro
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Schubert: String Quartet No. 14 in D Minor, D. 810 "Death and the Maiden": II. Andante con moto (Excerpt)
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Bach, JS: Brandenburg Concerto No. 5 in D Major, BWV 1050: II. Affettuoso
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by artist: Lisa Beznosiuk
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Mozart: Divertimento in D Major, K. 136 "Salzburg Symphony No. 1": I. Allegro
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Mozart: Serenade for Winds No. 10 in B-Flat Major, K. 361 "Gran partita": III. Adagio
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Mozart: Serenade No. 6 in D Major, K. 239 "Serenata Notturna": I. Marcia. Maestoso
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Vivaldi: The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": I. Allegro
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Bach, JS: Musikalisches Opfer, BWV 1079: Sonata sopr' il soggetto Reale. IV. Allegro
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Gluck: Orphée et Eurydice, Wq. 41, Act 2: Danse des ombres heureuses
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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 0xeb0fd9490262409248dbcd4b22c147ed6f94a2ff27c5486d71fc282198f17cc4. 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/GBAYC8601144.
  date published: 2026-07-08T03:53:27Z
audio: Variations on an Original Theme, Op. 36 "Enigma": Var. IX. Nimrod
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Goldberg Variations, BWV 988: Var. 25. Andante espressivo
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duration ms: 431852
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by artist: Johann Sebastian Bach
by artist: Nicholas Angelich
in album: Classical Music In the Background
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  date published: 2021-11-27
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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  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 0x625130d3f3fdc544465726b0b399b692e5efe0166d3084e6a144d2e61c81108a. 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/GBAYC1100502.
  date published: 2026-07-08T03:22:41Z
audio: Goldberg Variations, BWV 988: Var. 25. Andante espressivo
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String Quartet No. 2 "Company": IV. Quartet Note = 160
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by artist: Philip Glass
by artist: Christopher Warren-Green
by artist: London Chamber Orchestra
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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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  date published: 2026-07-08T03:53:27Z
audio: String Quartet No. 2 "Company": IV. Quartet Note = 160
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3 Gymnopédies: I. Lent et douloureux
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by artist: Louis Frémaux
by artist: City Of Birmingham Symphony Orchestra
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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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  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 0xd42e61ebd08980e68fc0d802dc4228578cd5c4b53fcd2fa7da68fdaac0e78ef3. 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/GBAYD9000594.
  date published: 2026-07-08T03:22:41Z
audio: 3 Gymnopédies: I. Lent et douloureux
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Una mattina
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by artist: Dalal
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genre: classical
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Una mattina
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Piano Sonata No. 16 in C Major, K. 545 'Sonata facile': II. Andante
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duration: PT3M56S
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by artist: Wolfgang Amadeus Mozart
by artist: Karl Engel
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genre: classical
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Piano Sonata No. 16 in C Major, K. 545 'Sonata facile': II. Andante
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Spiegel im Spiegel
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by artist: Tasmin Little
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Spiegel im Spiegel
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Piano Trio in C Major, K. 548: II. Andante cantabile
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by artist: Wiener Schubert Trio
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genre: classical
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: 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
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String Quartet No. 14 in C-Sharp Minor, Op. 131: IV. Andante ma non troppo e molto cantabile
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": II. Adagio un poco mosso
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": II. Adagio un poco mosso
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Nocturnes, Op. 32: No 2 in A-Flat Major
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Nocturnes, Op. 32: No 2 in A-Flat Major
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The Four Seasons, Violin Concerto No. 4 in F Minor, RV 297 "Winter": II. Largo
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  date published: 2026-07-08T03:53:27Z
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Violin Concerto in A Minor, BWV 1041: II. Andante
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  date published: 2026-07-21T17:08:14Z
audio: Violin Concerto in A Minor, BWV 1041: II. Andante
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Suite bergamasque, L. 75: III. Clair de lune
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Sicilienne, Op. 78
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Sicilienne, Op. 78
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Piano Concerto No. 1 in F-Sharp Minor, Op. 1: II. Andante
type: MusicRecording
duration: PT6M27S
duration ms: 387333
explicit: false
by artist: Sergei Rachmaninoff
by artist: Libor Pešek
genre: classical
genre: classical-piano
isrc code: GBAYC8702415