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Klavierkonzert Nr. 21 C-Dur, K. 467, "Elvira Madigan": 2. Andante (Elvira Madigan): II. Andante
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Piano Concerto No. 21 in C Major, K. 467 - "Elvira Madigan": II. Andante
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Piano Concerto No. 21 in C Major, K. 467: II. Andante
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Romance in E Minor
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String Quintet in E Major, Op.11: No.5, III. Minuetto (Menuet - Minuet)
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Lyric Pieces, Op. 43: No. 1, "Butterfly"
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Melody in F, Op. 3: No. 1
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Ave Maria
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Xerxes, HWV 40: Largo - "Ombra mai fu"
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The Magic Flute, K.620, Act I: "Der Vogelfänger bin ich ja" (Instrumental Version)
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Carmen: Intermezzo
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Fantasiestücke (Fantasy Pieces) in D-Flat Major, Op. 12: Des Abends (Evening)
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Orfeo ed Euridice, Act II: Dance of the Blessed Spirits
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Songs Without Words, Op. 62: No. 6 - "Spring Song"
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Carnival of the Animals: IX. The Cuckoo in the Depths of the Woods
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Symphony No. 9 in E Minor, Op. 95, B. 178 - "From the New World": II. Largo (Excerpt)
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Violin Concerto No. 2 in D Minor, Op. 22: II. Romance
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Two Pieces for the Left Hand, Op. 9: No. 2, Nocturne in D-Flat Major
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Crisantemi
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Four Impromptus No. 3 in G-Flat Major, Op. 90, D. 899
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audio: Four Impromptus No. 3 in G-Flat Major, Op. 90, D. 899
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Violin Romance No. 2 in F Major, Op. 50
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Piano Concerto No. 23 in A Major, K. 488: II. Adagio
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Piano Quintet in A Major, D. 667 - "The Trout": IV. Andante (Excerpt)
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Meditation: Classic Care - Music for Healthy Living for Calming Reflection & Quiet Time
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date published: 2015-04-28

Classical Music for Relaxation
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track: String Quintet in E Major, Op. 13, No. 5: 3. Minuet
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track: Bagatelle No. 25 in A Minor, WoO 59, "Für Elise"
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track: Ständchen
track: A Midsummernight's Dream : Notturno

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additional property: Instrumentalness
  type: PropertyValue
  value: 0.917
additional property: Liveness
  type: PropertyValue
  value: 0.07
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.332
additional property: Loudness (dB)
  type: PropertyValue
  value: -30.869
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
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Ständchen
type: MusicRecording
duration: PT3M16S
duration ms: 196819
explicit: false
by artist: Franz Schubert
by artist: Budapest Strings
by artist: Béla Bánfalvi
in album: Classical Music for Relaxation
  type: MusicAlbum
  date published: 2012-09-25
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: US5541101168
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T12:36:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0b793d452fbf57da1c5d79a44c0e3688ffef48c64ad9770d4c1d0ebee70a4c6c
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/US5541101168
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 0x0b793d452fbf57da1c5d79a44c0e3688ffef48c64ad9770d4c1d0ebee70a4c6c. 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/US5541101168.
  date published: 2026-07-08T08:56:20Z
audio: Ständchen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.398
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.219
  additional property: Energy
    type: PropertyValue
    value: 0.098
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.937
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.556
  additional property: Liveness
    type: PropertyValue
    value: 0.121
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.125
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.4
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

A Midsummernight's Dream : Notturno
type: MusicRecording
duration: PT6M41S
duration ms: 401500
explicit: false
by artist: Felix Mendelssohn
by artist: Budapest Philharmonic Orchestra
by artist: Janos Kovacs
in album: Classical Music for Relaxation
  type: MusicAlbum
  date published: 2012-09-25
genre: classical
genre: early-romantic-era
genre: german-romanticism
isrc code: USA561297615
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T12:58:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7a032d8c8f83c6d2de27c1233495b44b4bba531def24571547e743ada2a2ad23
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/USA561297615
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 0x7a032d8c8f83c6d2de27c1233495b44b4bba531def24571547e743ada2a2ad23. 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/USA561297615.
  date published: 2026-07-08T03:22:41Z
audio: A Midsummernight's Dream : Notturno
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 91.515
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.138
  additional property: Energy
    type: PropertyValue
    value: 0.04
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.987
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.879
  additional property: Liveness
    type: PropertyValue
    value: 0.088
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.036
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.96
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Classical Music for the Reader: Great Masterpieces for the Dedicated Reader
type: MusicAlbum
date published: 2011-11-01
track: Handel: Serse - Ombra Mai Fu (Handel's Largo)
  type: MusicRecording
  duration: PT2M59S
  duration ms: 179975
  explicit: false
  by artist: George Frideric Handel
  by artist: Various Artists
  by artist: Budapest Strings
  in album: Classical Music for the Reader: Great Masterpieces for the Dedicated Reader
    type: MusicAlbum
    date published: 2011-11-01
  genre: classical
  genre: early-music
  genre: baroque
  genre: english-baroque
  genre: german-baroque
  isrc code: US5541102222
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T15:28:37+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc751cc38d9e67581dbad0cdfab36a4c089bdac3bead66e17aa6d621b436372e3
  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/US5541102222
  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 0xc751cc38d9e67581dbad0cdfab36a4c089bdac3bead66e17aa6d621b436372e3. 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/US5541102222.
    date published: 2026-07-08T08:56:20Z
  audio: Handel: Serse - Ombra Mai Fu (Handel's Largo)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 105.793
    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: 0.095
    additional property: Energy
      type: PropertyValue
      value: 0.239
    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.907
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.87
    additional property: Liveness
      type: PropertyValue
      value: 0.289
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.042
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.638
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Pachelbel: Canon In D
  type: MusicRecording
  duration: PT4M18S
  duration ms: 258193
  explicit: false
  by artist: Johann Pachelbel
  by artist: Various Artists
  by artist: Max Pommer
  by artist: New Bach Collegium Musicum
  in album: Classical Music for the Reader: Great Masterpieces for the Dedicated Reader
    type: MusicAlbum
    date published: 2011-11-01
  isrc code: US5541102224
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T05:12:41+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x514a375dbf588050e31cf619fc426ecedc6ee3e53598a3b82b8e9fcfc1528ae5
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956889
  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/US5541102224
  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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514a375dbf588050e31cf619fc426ecedc6ee3e53598a3b82b8e9fcfc1528ae5. 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/US5541102224.
    date published: 2026-07-06T06:56:49Z
  audio: Pachelbel: Canon In D
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 123.968
    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: 0.197
    additional property: Energy
      type: PropertyValue
      value: 0.23
    additional property: Speechiness
      type: PropertyValue
      value: 0.036
    additional property: Acousticness
      type: PropertyValue
      value: 0.866
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.914
    additional property: Liveness
      type: PropertyValue
      value: 0.119
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.25
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.495
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Grieg: Peer Gynt "Asa's Death"
  type: MusicRecording
  duration: PT5M11S
  duration ms: 311943
  explicit: false
  by artist: Edvard Grieg
  by artist: Various Artists
  by artist: Janos Sandor
  by artist: Budapest Philharmonic Orchestra
  in album: Classical Music for the Reader: Great Masterpieces for the Dedicated Reader
    type: MusicAlbum
    date published: 2011-11-01
  genre: classical
  genre: late-romantic-era
  genre: norwegian-classical
  isrc code: US5541102235
  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: Grieg: Peer Gynt "Asa's Death"
track: Haydn: String Quartet In F, Op. 3/5, "Serenade" - Serenade
track: Debussy: Suite Bergamasque, L 75 - Clair De Lune

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-07T08:24:54+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x4e9abf0a5c97d9bfa21d476a1642c6c90db8f7813af7f2ea11cd4ff96ecf7f53

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 957145

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957145

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5541102235

OTSTimestamp
type: PropertyValue
value: 2026-07-08T08:56:20Z

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 0x4e9abf0a5c97d9bfa21d476a1642c6c90db8f7813af7f2ea11cd4ff96ecf7f53. 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/US5541102235.
date published: 2026-07-08T08:56:20Z

Grieg: Peer Gynt "Asa's Death"
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 142.514
additional property: Musical Key
  type: PropertyValue
  value: 11
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.151
additional property: Energy
  type: PropertyValue
  value: 0.094
additional property: Speechiness
  type: PropertyValue
  value: 0.042
additional property: Acousticness
  type: PropertyValue
  value: 0.937
additional property: Instrumentalness
  type: PropertyValue
  value: 0.851
additional property: Liveness
  type: PropertyValue
  value: 0.112
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.035
additional property: Loudness (dB)
  type: PropertyValue
  value: -19.94
additional property: Key Name
  type: PropertyValue
  value: B
additional property: Mode Name
  type: PropertyValue
  value: Minor

Haydn: String Quartet In F, Op. 3/5, "Serenade" - Serenade
type: MusicRecording
duration: PT4M34S
duration ms: 274333
explicit: false
by artist: Franz Joseph Hayden
by artist: Various Artists
by artist: Budapest Strings
in album: Classical Music for the Reader: Great Masterpieces for the Dedicated Reader
  type: MusicAlbum
  date published: 2011-11-01
isrc code: US5541102226
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T12:44:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2375fe7608f0b764f5dadc5a17eb5a26cf4c6e7932fbb306a72a552b406831fb
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/US5541102226
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 0x2375fe7608f0b764f5dadc5a17eb5a26cf4c6e7932fbb306a72a552b406831fb. 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/US5541102226.
  date published: 2026-07-08T08:56:20Z
audio: Haydn: String Quartet In F, Op. 3/5, "Serenade" - Serenade
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 136.408
  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: 0.322
  additional property: Energy
    type: PropertyValue
    value: 0.204
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.917
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.412
  additional property: Liveness
    type: PropertyValue
    value: 0.106
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.522
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.065
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Debussy: Suite Bergamasque, L 75 - Clair De Lune
type: MusicRecording
duration: PT4M12S
duration ms: 252169
explicit: false
by artist: Claude Debussy
by artist: Various Artists
by artist: Max Pommer
by artist: Leipzig Radio Symphony Orchestra
in album: Classical Music for the Reader: Great Masterpieces for the Dedicated Reader
  type: MusicAlbum
  date published: 2011-11-01
genre: classical
genre: impressionism
genre: post-romantic-era
isrc code: US5541102240
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T02:44:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x23e1b3e15cabc930678241bfc23c776e2cd47572d8049471769bbf0289315d8e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5541102240
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e1b3e15cabc930678241bfc23c776e2cd47572d8049471769bbf0289315d8e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5541102240.
  date published: 2026-06-13T13:32:09Z
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Classical Brain Power - Over 7 Hours of Music for Concentration, Productive Learning, Studying and Working
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Classical Stress Relief: 99 Must-Have Classical Meditation & Relaxation
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track: Tosca, Act III: "E lucevan le stelle" (Instrumental Version)

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Xerxe, HWV 40: Largo
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Melancholy Galliard
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100 Must-Have Austrian Classics
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Classical Masterpieces of the Millennium
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Classics for a Rainy Day
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Canon in D Major
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by artist: Berlin Chamber Orchestra
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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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Piano Sonata No. 14 in C-Sharp Minor, Op. 27: No. 2, "Moonlight Sonata": I. Adagio Sostenuto
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by artist: Evelyne Dubourg
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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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A Midsummer Night's Dream, Op. 61: II. Notturno
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: A Midsummer Night's Dream, Op. 61: II. Notturno
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Etude in E Minor, Op. 25: No. 5
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Etude in E Minor, Op. 25: No. 5
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Etude in A Major, Op. 60: No. 3
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Etude in A Major, Op. 60: No. 3
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Capriccio Espagnol, Op. 34: II. Variations
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  date published: 2026-07-08T03:53:27Z
audio: Capriccio Espagnol, Op. 34: II. Variations
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Schwanengesang, D. 957: IV. Ständchen
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Ave Maria
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100 Must-Have History of Classical Music
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100 Must-Have Bedtime Classics
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date published: 2013-11-26

Stress Relief: All You Need Classics
type: MusicAlbum
date published: 2014-05-06

Mozart for Babies
type: MusicAlbum
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Masters of Classical Music
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Mozart for Your Brain
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Mozart for Mornings
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Mozart (Red Classics)
type: MusicAlbum
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100 Must-Have Amour Romantic Love Song Classics
type: MusicAlbum
date published: 2014-05-20

100 Must-Have Valentine's Day Love Song Classics
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date published: 2015-01-20

100 Must-Have Classical Music for the Reader
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Klassik für Jedermann: Eine Kleine Nachtmusik
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99 Must-Have Chillout Classics
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100 Must-Have Movie Classics
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Mozart for Christmas
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100 Must-Have Roadtrip Classics
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100 Must-Have Easy Listening Classics
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Classic á la Carte: International Dinner Party - Classical Music for Dining and Entertaining
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date published: 2017-09-22

Classical Masterpieces of the Millennium: Liszt
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track: Romance in E Minor

Classical Music for the Reader 4: Great Masterpieces for the Dedicated Reader
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100 Must-Have Solo Piano Masterpieces
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Piano (Red Classics)
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For Studying: All You Need Classics
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