Ethelbert Nevin
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description: Ethelbert Woodbridge Nevin (November 25, 1862February 17, 1901) was an American pianist and composer. right|thumb|Ethelbert Nevin, ca. 1891 Early life Nevin was born on November 25, 1862, at Vineacre
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album: Voyages. Piano Music from the Golden Age
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album: The Maiden's Prayer: Piano Music from the 19th-Century Salon
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  track: Serenata, Op. 15 No. 1
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  track: Humoresques de concert, Op. 14: I. Menuet célèbre in G Major
  track: Sonata No. 6: Toccata in A
  track: Suite No. 5 in E Major, HWV 430: IV. Air with 5 Variations "The Harmonious Blacksmith"
  track: Lieder ohne Worte V, Op. 62: VI. Allegretto grazioso, MWV U161 "Spring Song"
  track: 5 Pieces for Piano, Op. 75: V. The Spruce
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  track: 2 Pieces for Piano, Op. 157: II. La fileuse
  track: Première valse, Op. 83
album: The Art Of Beniamino Gigli, Vol. 3
album: American Light Music Classics
album: Melody
album: Vick's Open House
album: American Romantics: The Boston Scene
album: Rockabye Baby - Lullabies with Orchestra
album: Berceuses
album: A Tale of Two Cellos
album: Women of Piano. Great Female Pianists of the Golden Age
album: Women of Piano. Great Female Artists of the Golden Age
album: Warum. Heritage Music of Schumann, Dvořák and Tchaikovsky
album: Marble Halls. Piano Revelations from the Golden Age
album: The Golden Age of Light Music: British Cinema & Theatre Orchestras - Volume 2
album: Stuart Burrows Edition - The Complete Decca Recitals
album: Paul Robeson: The Complete EMI Sessions 1928-1939
album: Les Sylvains. Piano Evocations from the Golden Age
album: Chimères. Beethoven, Mozart and Legacy
album: Jeux D'eau. Piano Evocations from the Golden Age
album: Alouettes. Piano Revelations from the Golden Age
album: Monk, W.H.: Abide With Me / Roberton, H.: All in the April Evening / Nevin, E.: the Rosary (Music for A Country Church)
album: Opera Arias (Contralto): Schumann-Heink, Ernestine - Mehrkens, A. / Arditi, L. / Schubert, F. / Wagner, R. / Meyerbeer, G. (1900-1935)
album: The Bell Telephone Hour Recordings, Vol. 2: Concertos by Corelli, Dvořák & Others (Live) [Remastered 2022]
album: American Music (Carousel Of) - The Fabled 24 September 1940 San Francisco Concerts Featuring Cohan, Berlin, Kern, Romberg, Kalmar
album: Piano Music of Ethelbert & Arthur Nevin
album: The Parlour Grand
album: LANZA, Mario: The Christmas Album (1950-1952)
album: Poem II
album: Noel. Piano Music of Beethoven, Mozart and Legacy
album: Vocal Recital: Aler, John - Marshall, C. / Firestone, I. / Rasbach, O. / Sanderson, W. / Purcell, E. / Charles, W. / Sullivan, A.
album: The Christmas Rosary
album: Dancing On A Summer Lawn
album: Kreisler of the Saxophone
album: American Romantics II
album: Famous Classical Guitarists, Vol. 6 (1928 - 1939)
album: Teagarden, Jack: It's Time for T (1929-1953)
album: Segovia & Contemporaries, Vol. 2: Guillermo Gómez
album: Explorer Set: The American Edition, Vol. 1
album: Nights of Gladness

Marion Tango
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  date published: 2026-07-08T03:53:27Z
audio: Marion Tango
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Mighty Lak' a Rose
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Sketchbook, Op. 2: Oh, that we two were maying (arr. J. Lloyd Webber for 2 cellos and piano)
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Narcissus
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Mighty Lak' A Rose
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Humoresques de concert, Op. 14: I. Menuet célèbre in G Major
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Sonata No. 6: Toccata in A
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audio: Sonata No. 6: Toccata in A
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Suite No. 5 in E Major, HWV 430: IV. Air with 5 Variations "The Harmonious Blacksmith"
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  date published: 2026-07-08T03:53:27Z
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Lieder ohne Worte V, Op. 62: VI. Allegretto grazioso, MWV U161 "Spring Song"
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5 Pieces for Piano, Op. 75: V. The Spruce
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2 Pieces for Piano, Op. 157: II. La fileuse
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Première valse, Op. 83
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The Art Of Beniamino Gigli, Vol. 3
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American Light Music Classics
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track: Holiday for Strings
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OpenTimestamps Proof of Existence
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Symphony No. 5½ "A Symphony for Fun": I. Perpetual Emotion
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Symphony No. 5½ "A Symphony for Fun": II. Spiritual?
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Melody
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Vick's Open House
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American Romantics: The Boston Scene
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Rockabye Baby - Lullabies with Orchestra
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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: Cum Baya
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
  audio: Cum Baya
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  subject of: OpenTimestamps Proof of Existence
  audio: 5 Lieder, Op. 49: IV. Wiegenlied
track: Too-ra-loo-ra-loo-ral
track: Mighty Lak' a Rose

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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:20:19Z

5 Lieder, Op. 49: IV. Wiegenlied
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Too-ra-loo-ra-loo-ral
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by artist: Marilyn Horne
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Too-ra-loo-ra-loo-ral
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Berceuses
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    date published: 2026-07-08T03:22:41Z
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OpenTimestamps Proof of Existence
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date published: 2026-07-02T03:55:08Z

Madrigals, Book 7: Interrotte speranze, eterna fede, SV 132 (arr. J. Lloyd Webber for 3 cellos and harp)
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The Gadfly, Op. 97: Prelude (arr. J .Lloyd Webber for 2 cellos and piano)
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Choral Hymns from the Rig Veda, 3rd Group, Op. 26: No. 1. Hymn to the Dawn (arr. J. Lloyd Webber for 4 cellos and harp)
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My Lady Greensleeves (arr. J. Lloyd Webber for 2 cellos and piano)
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12 Songs, Op. 48: No. 1. Der Engel (The Angel) (arr. J. Lloyd Webber for 2 cellos and piano)
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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 0x56500b2dca5f03fbb908861b9a89acc37a915a6c2c8d501e4ecb6c94aa8386d4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191331107.
  date published: 2026-06-13T15:41:10Z
audio: 12 Songs, Op. 48: No. 1. Der Engel (The Angel) (arr. J. Lloyd Webber for 2 cellos and piano)
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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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Moon Silver (arr. J. Lloyd Webber for 2 cellos and piano)
type: MusicRecording
duration: PT2M16S
duration ms: 136480
explicit: false
by artist: William Lloyd Webber
by artist: Julian Lloyd Webber
by artist: Jiaxin Lloyd Webber
by artist: John Lenehan
in album: A Tale of Two Cellos
  type: MusicAlbum
  date published: 2013-10-01
popularity: 9
isrc code: HKI191331109
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
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191331109
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T11:38:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2043227d242b80ea01755d38204ac8678496bcd1224b3a698145a58f5ce8752f. 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/HKI191331109.
  date published: 2026-07-02T11:38:34Z
audio: Moon Silver (arr. J. Lloyd Webber for 2 cellos and piano)
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  additional property: Speechiness
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Sommerruh (Summer Calm), WoO 7 (arr. J. Lloyd Webber for 2 cellos and piano)
type: MusicRecording
duration: PT3M19S
duration ms: 199960
explicit: false
by artist: Robert Schumann
by artist: Julian Lloyd Webber
by artist: Jiaxin Lloyd Webber
by artist: John Lenehan
in album: A Tale of Two Cellos
  type: MusicAlbum
  date published: 2013-10-01
popularity: 9
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: HKI191331110
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
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191331110
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T11:38:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5dae844665af1fe4b1c38f9907053b9a099d5e06cc8a62598d726877da9ff6. 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/HKI191331110.
  date published: 2026-07-02T11:38:34Z
audio: Sommerruh (Summer Calm), WoO 7 (arr. J. Lloyd Webber for 2 cellos and piano)
  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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Stabat mater: Stabat mater dolorosa (arr. J. Lloyd Webber for 2 cellos and harp)
type: MusicRecording
duration: PT3M16S
duration ms: 196906
explicit: false
by artist: Giovanni Battista Pergolesi
by artist: Julian Lloyd Webber
by artist: Jiaxin Lloyd Webber
by artist: Catrin Finch
in album: A Tale of Two Cellos
  type: MusicAlbum
  date published: 2013-10-01
popularity: 9
genre: classical
genre: choral
genre: requiem
isrc code: HKI191331111
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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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
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191331111
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 0xa3cc3937baef9ee6822a90700574a93e4d677aebda3d4375a4880829e2ace319. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI191331111.
  date published: 2026-07-02T03:30:09Z
audio: Stabat mater: Stabat mater dolorosa (arr. J. Lloyd Webber for 2 cellos and harp)
  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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Si mes vers avaient des ailes (If my songs were only winged) (arr. J. Lloyd Webber for 2 cellos and piano)
type: MusicRecording
duration: PT2M25S
duration ms: 145893
explicit: false
by artist: Reynaldo Hahn
by artist: Julian Lloyd Webber
by artist: Jiaxin Lloyd Webber
by artist: John Lenehan
in album: A Tale of Two Cellos
  type: MusicAlbum
  date published: 2013-10-01
popularity: 10
isrc code: HKI191331113
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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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
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1c2ef433aa735b212f9a4550cea42b2e6aa74eef604d739d48ef60ea582d7c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191331113.
  date published: 2026-07-02T03:55:08Z
audio: Si mes vers avaient des ailes (If my songs were only winged) (arr. J. Lloyd Webber for 2 cellos and piano)
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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
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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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: Valence (Positivity)
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Lost is my quiet forever, Z. 502 (arr. J. Lloyd Webber for 2 cellos and harp)
type: MusicRecording
duration: PT2M36S
duration ms: 156466
explicit: false
by artist: Henry Purcell
by artist: Julian Lloyd Webber
by artist: Jiaxin Lloyd Webber
by artist: Catrin Finch
in album: A Tale of Two Cellos
  type: MusicAlbum
  date published: 2013-10-01
popularity: 8
genre: classical
genre: choral
isrc code: HKI191331115
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: 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 0x7664b2c2f9d8d0a97b4a2f03df914755344be72a724bc30b1d8913f87de596fd. 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/HKI191331115.
  date published: 2026-07-06T06:56:49Z
audio: Lost is my quiet forever, Z. 502 (arr. J. Lloyd Webber for 2 cellos and harp)
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Mädchenlieder, Op. 103: Madchenlieder, Op. 103: No. 4. An den Abendstern (Evening Star) (arr. J. Lloyd Webber for 2 cellos and piano)
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duration: PT2M26S
duration ms: 146266
explicit: false
by artist: Robert Schumann
by artist: Julian Lloyd Webber
by artist: Jiaxin Lloyd Webber
by artist: John Lenehan
in album: A Tale of Two Cellos
  type: MusicAlbum
  date published: 2013-10-01
popularity: 19
genre: classical
genre: classical-piano
genre: chamber-music
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: 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 0x820a04e98fd533bc94e00baed7c4dd9711a954ea55aed0268e5551c97a1393f8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191331117.
  date published: 2026-07-02T05:09:12Z
audio: Mädchenlieder, Op. 103: Madchenlieder, Op. 103: No. 4. An den Abendstern (Evening Star) (arr. J. Lloyd Webber for 2 cellos and piano)
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Acousticness
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    type: PropertyValue
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  additional property: Mode Name
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Sweet and Low (arr. J. Lloyd Webber for 2 cellos and piano)
type: MusicRecording
duration: PT2M26S
duration ms: 146520
explicit: false
by artist: Joseph Barnby
by artist: Julian Lloyd Webber
by artist: Jiaxin Lloyd Webber
by artist: John Lenehan
in album: A Tale of Two Cellos
  type: MusicAlbum
  date published: 2013-10-01
popularity: 13
isrc code: HKI191331119
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: 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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audio: Sweet and Low (arr. J. Lloyd Webber for 2 cellos and piano)
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Summer Sunset (arr. J. Lloyd Webber for 2 cellos and piano)
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by artist: Julian Lloyd Webber
by artist: Jiaxin Lloyd Webber
by artist: John Lenehan
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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: 2026-07-02T03:30:09Z
audio: Summer Sunset (arr. J. Lloyd Webber for 2 cellos and piano)
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2 Wiegenlieder (2 Lullabies): No. 2. Estnisches Wiegenlied (Estonian Lullaby) (arr. J. Lloyd Webber for 2 cellos and piano)
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by artist: Julian Lloyd Webber
by artist: Jiaxin Lloyd Webber
by artist: John Lenehan
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popularity: 14
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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: 2026-06-13T13:32:09Z
audio: 2 Wiegenlieder (2 Lullabies): No. 2. Estnisches Wiegenlied (Estonian Lullaby) (arr. J. Lloyd Webber for 2 cellos and piano)
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Women of Piano. Great Female Pianists of the Golden Age
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Women of Piano. Great Female Artists of the Golden Age
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Warum. Heritage Music of Schumann, Dvořák and Tchaikovsky
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Marble Halls. Piano Revelations from the Golden Age
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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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The Golden Age of Light Music: British Cinema & Theatre Orchestras - Volume 2
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Stuart Burrows Edition - The Complete Decca Recitals
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Paul Robeson: The Complete EMI Sessions 1928-1939
type: MusicAlbum
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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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Les Sylvains. Piano Evocations from the Golden Age
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
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  subject of: OpenTimestamps Proof of Existence
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OTSVerificationAPI
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OTSTimestamp
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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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description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6b874147323eda822205a321c910d02d201d6b8bce26118086e7f83ca99b3c. 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/DEPI82439049.
date published: 2026-07-08T03:53:27Z

Variations on 'Weinen, Klagen, Sorgen, Zagen' BWV 12 / S. 179 - Welte-Mignon 722
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Chimères. Beethoven, Mozart and Legacy
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Jeux D'eau. Piano Evocations from the Golden Age
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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: Kleine Suite, Op. 18: No. 3, Scherzo Humoristique - Duo-Art 5788
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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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Monk, W.H.: Abide With Me / Roberton, H.: All in the April Evening / Nevin, E.: the Rosary (Music for A Country Church)
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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: Variations on an Original Theme, Op. 36, "Enigma": Variation 9: Nimrod (arr. for organ)
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
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  subject of: OpenTimestamps Proof of Existence
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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:53:27Z

Adagio for Strings, Op. 11 (arr. for organ)
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additional property: Valence (Positivity)
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Opera Arias (Contralto): Schumann-Heink, Ernestine - Mehrkens, A. / Arditi, L. / Schubert, F. / Wagner, R. / Meyerbeer, G. (1900-1935)
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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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The Bell Telephone Hour Recordings, Vol. 2: Concertos by Corelli, Dvořák & Others (Live) [Remastered 2022]
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American Music (Carousel Of) - The Fabled 24 September 1940 San Francisco Concerts Featuring Cohan, Berlin, Kern, Romberg, Kalmar
type: MusicAlbum
date published: 2011-04-01

Piano Music of Ethelbert & Arthur Nevin
type: MusicAlbum
date published: 2019-12-12

The Parlour Grand
type: MusicAlbum
date published: 1997-07-22
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  by artist: Robert Silverman
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-07T11:17:55Z
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track: Romance In E Flat
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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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LANZA, Mario: The Christmas Album (1950-1952)
type: MusicAlbum
date published: 2003-11-12

Poem II
type: MusicAlbum
date published: 1991-01-01
track: Concert in the Glade
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  by artist: Lars Roos
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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: Concert in the Glade
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track: Narcissus

Noel. Piano Music of Beethoven, Mozart and Legacy
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track: Fantasia in D Minor, K. 397 - Duo-Art 5677
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T08:56:20Z
  audio: Fantasia in D Minor, K. 397 - Duo-Art 5677
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Vocal Recital: Aler, John - Marshall, C. / Firestone, I. / Rasbach, O. / Sanderson, W. / Purcell, E. / Charles, W. / Sullivan, A.
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date published: 1996-01-01

The Christmas Rosary
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date published: 2020-11-02

Dancing On A Summer Lawn
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  by artist: John Godfrey
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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track: Mighty Lak' A Rose
track: The Whirl Of The Waltz
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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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Kreisler of the Saxophone
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American Romantics II
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Famous Classical Guitarists, Vol. 6 (1928 - 1939)
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Teagarden, Jack: It's Time for T (1929-1953)
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Segovia & Contemporaries, Vol. 2: Guillermo Gómez
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Explorer Set: The American Edition, Vol. 1
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Nights of Gladness
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