Matthew Lipman
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genre: chamber music
description: thumb| Matthew Lipman (August 24, 1923 in Vineland, New Jersey – December 26, 2010 in West Orange, New Jersey) is recognized as the founder of the contemporary Philosophy for Children movement. His be
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  track: Concerto for 3 Violins in F Major, RV 551: III. Allegro
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  track: Violin Concerto No. 1 in A Minor, BWV 1041: II. Andante
  track: Violin Concerto No. 1 in A Minor, BWV 1041: III. Allegro assai
  track: Nonet: I. A Promenade
  track: Nonet: IIa. Tempo ad lib.
  track: Nonet: IIb. Interlude. Moderat, tempo ad lib.
  track: Nonet: III. Presto
  track: Brandenburg Concerto No. 3 in G Major, BWV 1048: I. [Allegro]
  track: Brandenburg Concerto No. 3 in G Major, BWV 1048: II. Adagio
  track: Brandenburg Concerto No. 3 in G Major, BWV 1048: III. Allegro
  track: Violin Concerto No. 2 in A Major, Op. 5: I. Allegro moderato
  track: Violin Concerto No. 2 in A Major, Op. 5: II. Largo
  track: Violin Concerto No. 2 in A Major, Op. 5: III. Rondeau
  track: Nice to Be Around - From "Cinderella Liberty" (Version for Solo Violin and String Ensemble)
  track: The Four Seasons / Violin Concerto in G Minor, RV 315 "Summer": III. Presto
  track: Theme - From "Schindler's List" (Version for Solo Violin and String Orchestra)
album: The Dvorak Album
album: Ascent
album: III. Allegro moderato, grazioso
album: Shostakovich: Impromptu for Viola & Piano, Op. 33
album: Forgotten Sounds
album: Octet for 2 Clarinets, Harp & String Quintet: II. Adagio molto
album: Matthew Quayle: Woodwind Chamber Music
album: Music@Menlo Live: Creative Capitals, Vol. 1
album: Music@Menlo Live, Gather, Vol. 3
album: Music@Menlo Live, Haydn Connections, Vol. 7
album: Music@Menlo Live, Gather, Vol. 6
album: Music@Menlo Live: Creative Capitals, Vol. 2
album: Music@Menlo LIVE, Beethoven Unfolding, Vol. 4
album: Music@Menlo Live, Russian Reflections, Vol. 8
album: Music@Menlo Live, Russian Reflections, Vol. 1
album: Music@Menlo Live, Russian Reflections, Vol. 7
album: Music@Menlo Live, Gather, Vol. 4
album: Music@Menlo Live: Creative Capitals, Vol. 3
album: Music@Menlo Live, Gather, Vol. 7
album: Music@Menlo Live, Haydn Connections, Vol. 9
album: Music@Menlo LIVE, Beethoven Unfolding, Vol. 5
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album: Music@Menlo Live: Creative Capitals, Vol. 8
album: Music@Menlo LIVE, Beethoven Unfolding, Vol. 3
album: Music@Menlo Live, Russian Reflections, Vol. 6
album: Music@Menlo Live, Gather, Vol. 1
album: Dvorák: Cello Concerto
album: Music@Menlo LIVE, French Reflections, Vol. III: Quartets and Harps

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Violin Concerto No. 1 in A Minor, BWV 1041: III. Allegro assai
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by artist: Anne-Sophie Mutter
by artist: Mutter's Virtuosi
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  date published: 2023-11-10
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
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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: 2026-07-02T03:30:09Z
audio: Violin Concerto No. 1 in A Minor, BWV 1041: III. Allegro assai
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Nonet: I. A Promenade
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by artist: André Previn
by artist: Anne-Sophie Mutter
by artist: Mohamed Hiber
by artist: Hwayoon Lee
by artist: Lionel Martin
by artist: Elias David Moncado
by artist: Samuel Nebyu
by artist: Matthew Lipman
by artist: Margarita Balanas
by artist: Dominik Wagner
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genre: classical
genre: orchestra
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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: 2026-07-02T03:55:08Z
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Nonet: IIa. Tempo ad lib.
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by artist: André Previn
by artist: Anne-Sophie Mutter
by artist: Mohamed Hiber
by artist: Hwayoon Lee
by artist: Lionel Martin
by artist: Elias David Moncado
by artist: Samuel Nebyu
by artist: Matthew Lipman
by artist: Margarita Balanas
by artist: Dominik Wagner
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genre: classical
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T15:38:35Z
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Nonet: IIb. Interlude. Moderat, tempo ad lib.
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genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T07:53:57Z
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Nonet: III. Presto
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by artist: Mohamed Hiber
by artist: Hwayoon Lee
by artist: Lionel Martin
by artist: Elias David Moncado
by artist: Samuel Nebyu
by artist: Matthew Lipman
by artist: Margarita Balanas
by artist: Dominik Wagner
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genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Brandenburg Concerto No. 3 in G Major, BWV 1048: I. [Allegro]
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664578ab52fea69c972748e3b4c56823ea2ec52829d7b51884c5420ef538e711. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962302601 — a six-check JSON result.
  date published: 2026-07-02T03:55:08Z
audio: Brandenburg Concerto No. 3 in G Major, BWV 1048: I. [Allegro]
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Brandenburg Concerto No. 3 in G Major, BWV 1048: II. Adagio
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T14:18:56Z
audio: Brandenburg Concerto No. 3 in G Major, BWV 1048: II. Adagio
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Brandenburg Concerto No. 3 in G Major, BWV 1048: III. Allegro
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by artist: Anne-Sophie Mutter
by artist: Mutter's Virtuosi
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genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Violin Concerto No. 2 in A Major, Op. 5: I. Allegro moderato
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by artist: Anne-Sophie Mutter
by artist: Mutter's Virtuosi
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Violin Concerto No. 2 in A Major, Op. 5: II. Largo
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by artist: Joseph Boulogne Chevalier de Saint-Georges
by artist: Anne-Sophie Mutter
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
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Violin Concerto No. 2 in A Major, Op. 5: III. Rondeau
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Violin Concerto No. 2 in A Major, Op. 5: III. Rondeau
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Nice to Be Around - From "Cinderella Liberty" (Version for Solo Violin and String Ensemble)
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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The Four Seasons / Violin Concerto in G Minor, RV 315 "Summer": III. Presto
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by artist: Anne-Sophie Mutter
by artist: Mutter's Virtuosi
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genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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track: Piano Quartet No. 2 in E-Flat Major, Op. 87, B.162: III. Allegro moderato, grazioso
track: Piano Quartet No. 2 in E-Flat Major, Op. 87, B.162: IV. Finale. Allegro ma non troppo
track: Terzetto in C Major, Op. 74, B. 148: III. Scherzo. Vivace - Trio. Poco meno mosso
track: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": I. Lento maestoso
track: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": II. Poco adagio
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track: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": VI. Lento maestoso
track: Humoresques, Op. 101, B. 187: VII. Poco lento e grazioso

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Terzetto in C Major, Op. 74, B. 148: III. Scherzo. Vivace - Trio. Poco meno mosso
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duration: PT4M11S
duration ms: 251306
explicit: false
by artist: Antonín Dvořák
by artist: Chad Hoopes
by artist: Kevin Zhu
by artist: Matthew Lipman
in album: The Dvorak Album
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  date published: 2022-07-29
genre: classical
genre: late-romantic-era
genre: czech-classical
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dd92ddd1391823237c6a0532d019b859ea9f18cbfffae85f8cecd7c68e83d0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200654 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Terzetto in C Major, Op. 74, B. 148: III. Scherzo. Vivace - Trio. Poco meno mosso
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Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": I. Lento maestoso
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duration: PT4M3S
duration ms: 243906
explicit: false
by artist: Antonín Dvořák
by artist: Jan Vogler
by artist: Chad Hoopes
by artist: Tiffany Poon
in album: The Dvorak Album
  type: MusicAlbum
  date published: 2022-07-29
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: DEE862200656
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-07T13:25:45Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": I. Lento maestoso
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Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": II. Poco adagio
type: MusicRecording
duration: PT6M21S
duration ms: 381080
explicit: false
by artist: Antonín Dvořák
by artist: Jan Vogler
by artist: Chad Hoopes
by artist: Tiffany Poon
in album: The Dvorak Album
  type: MusicAlbum
  date published: 2022-07-29
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: DEE862200657
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
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81271fdc3deb399806b0340b36d5e859b6ed7a46d681cf3d6dc163e6aac2a0ca. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200657 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": II. Poco adagio
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Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": III. Andante
type: MusicRecording
duration: PT5M32S
duration ms: 332946
explicit: false
by artist: Antonín Dvořák
by artist: Jan Vogler
by artist: Chad Hoopes
by artist: Tiffany Poon
in album: The Dvorak Album
  type: MusicAlbum
  date published: 2022-07-29
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: DEE862200658
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200658
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9973712184d65f7dac6412b3c69f7bf5bd860118b75ed7beb6320e3720844fab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200658 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": III. Andante
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  additional property: Valence (Positivity)
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Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": IV. Andante moderato
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duration: PT4M55S
duration ms: 295533
explicit: false
by artist: Antonín Dvořák
by artist: Jan Vogler
by artist: Chad Hoopes
by artist: Tiffany Poon
in album: The Dvorak Album
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  date published: 2022-07-29
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: DEE862200659
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
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d355b566a54f2c1c315d69825f046ab232720c3ba1d7546a94545118621abbd. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200659 — a six-check JSON result.
  date published: 2026-07-30T02:30:29Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": IV. Andante moderato
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Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": V. Allegro
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duration ms: 230146
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by artist: Antonín Dvořák
by artist: Jan Vogler
by artist: Chad Hoopes
by artist: Tiffany Poon
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genre: classical
genre: late-romantic-era
genre: czech-classical
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e87eb4d6f709f8ff60cfdbe208ab9d90dfc40b2745b972c78dccfc42ac41c85. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200660 — a six-check JSON result.
  date published: 2026-07-02T03:55:08Z
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Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": VI. Lento maestoso
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by artist: Jan Vogler
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genre: classical
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdf3252c59b8a48ffb6a2a3f608cb4e373fc9eff7faaabdb1785fb7a5076108. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200661 — a six-check JSON result.
  date published: 2026-07-29T21:51:49Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": VI. Lento maestoso
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  additional property: Speechiness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Humoresques, Op. 101, B. 187: VII. Poco lento e grazioso
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duration: PT3M13S
duration ms: 193986
explicit: false
by artist: Antonín Dvořák
by artist: Tiffany Poon
in album: The Dvorak Album
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  date published: 2022-07-29
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: DEE862200662
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block-height/953528
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200662
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf525d633c50f9e1e9725e68f7c5b526c321149b9ab3007b3ad1f15cb90dd7b99. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200662 — a six-check JSON result.
  date published: 2026-06-13T15:41:10Z
audio: Humoresques, Op. 101, B. 187: VII. Poco lento e grazioso
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Ascent
type: MusicAlbum
date published: 2019-02-08
track: Märchenbilder, Op. 113: IV. Langsam, mit melancholischem Ausdruck
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  by artist: Robert Schumann
  by artist: Matthew Lipman
  by artist: Henry Kramer
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    date published: 2019-02-08
  genre: classical
  genre: classical-piano
  genre: chamber-music
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  additional property: CopyrightStatus
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
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  additional property: OTSVerificationAPI
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB801067428
  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1590e8b15b15f7e64d4ca0ce5040c393884de9d1958b6ac54d9e1339c327db. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB801067428 — a six-check JSON result.
    date published: 2026-07-31T02:19:15Z
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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: Valence (Positivity)
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    additional property: Loudness (dB)
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III. Allegro moderato, grazioso
type: MusicAlbum
date published: 2022-07-01

Shostakovich: Impromptu for Viola & Piano, Op. 33
type: MusicAlbum
date published: 2018-10-19

Forgotten Sounds
type: MusicAlbum
date published: 2024-06-07
track: Prélude à l’après-midi d’un faune, CD 87 (Arr. for Octet by G. Steele Johnson)
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  by artist: Claude Debussy
  by artist: Graeme Steele Johnson
  by artist: Ji Weon Ryu
  by artist: Han Lash
  by artist: Bora Kim
  by artist: Rachel Loseke
  by artist: Matthew Cohen
  by artist: Yun Han
  by artist: Kohei Yamaguchi
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    date published: 2024-06-07
  genre: classical
  genre: impressionism
  genre: post-romantic-era
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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/USASX2460301
  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d0107d133ba68947d36b3bd6ddf4476125d0073cc8553f973b5353af439fbd. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX2460301 — a six-check JSON result.
    date published: 2026-07-31T00:26:26Z
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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: Liveness
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    additional property: Valence (Positivity)
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track: Octet for Two Clarinets, Harp, Two Violins, Viola, Cello and Double Bass: I. Allegro moderato
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  by artist: Charles Martin Loeffler
  by artist: Graeme Steele Johnson
  by artist: David Shifrin
  by artist: Bridget Kibbey
  by artist: Stella Chen
  by artist: Siwoo Kim
  by artist: Matthew Lipman
  by artist: Samuel DeCaprio
  by artist: Sam Suggs
  in album: Forgotten Sounds
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    date published: 2024-06-07
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fe2c3370d0d770a6b2485c77616d29875d7dbdbb2655c8da43bf82403629c6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX2460302 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
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    additional property: Musical Key
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    additional property: Acousticness
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    additional property: Key Name
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track: Octet for Two Clarinets, Harp, Two Violins, Viola, Cello and Double Bass: II. Adagio molto
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  duration: PT9M57S
  duration ms: 597453
  explicit: false
  by artist: Charles Martin Loeffler
  by artist: Graeme Steele Johnson
  by artist: David Shifrin
  by artist: Bridget Kibbey
  by artist: Stella Chen
  by artist: Siwoo Kim
  by artist: Matthew Lipman
  by artist: Samuel DeCaprio
  by artist: Sam Suggs
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  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: Octet for Two Clarinets, Harp, Two Violins, Viola, Cello and Double Bass: II. Adagio molto
track: Octet for Two Clarinets, Harp, Two Violins, Viola, Cello and Double Bass: III. Andante; Allegro alla Zingara
track: Timbres oubliés (Arr. for Clarinet and Harp by Graeme Steele Johnson and Bridget Kibbey)

Siwoo Kim
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Matthew Lipman
type: MusicGroup

Samuel DeCaprio
type: MusicGroup

Sam Suggs
type: MusicGroup

Forgotten Sounds
type: MusicAlbum
date published: 2024-06-07

CopyrightID
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CopyrightStatus
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CopyrightRegisteredAt
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CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0x222548067f194d9000fe186ca304b1bd23521eec580afd6ae8f5c1e475372b19

OTSHash
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960229

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX2460303

OTSTimestamp
type: PropertyValue
value: 2026-07-30T08:30:10Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222548067f194d9000fe186ca304b1bd23521eec580afd6ae8f5c1e475372b19. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX2460303 — a six-check JSON result.
date published: 2026-07-30T08:30:10Z

Octet for Two Clarinets, Harp, Two Violins, Viola, Cello and Double Bass: II. Adagio molto
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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: Mode Name
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Octet for Two Clarinets, Harp, Two Violins, Viola, Cello and Double Bass: III. Andante; Allegro alla Zingara
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duration: PT10M23S
duration ms: 623986
explicit: false
by artist: Charles Martin Loeffler
by artist: Graeme Steele Johnson
by artist: David Shifrin
by artist: Bridget Kibbey
by artist: Stella Chen
by artist: Siwoo Kim
by artist: Matthew Lipman
by artist: Samuel DeCaprio
by artist: Sam Suggs
in album: Forgotten Sounds
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  date published: 2024-06-07
isrc code: USASX2460304
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/USASX2460304
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
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Matthew Quayle: Woodwind Chamber Music
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Music@Menlo Live: Creative Capitals, Vol. 1
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Music@Menlo Live, Gather, Vol. 3
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Music@Menlo Live, Haydn Connections, Vol. 7
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Music@Menlo Live, Gather, Vol. 6
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Music@Menlo Live: Creative Capitals, Vol. 2
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Music@Menlo LIVE, Beethoven Unfolding, Vol. 4
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Music@Menlo Live, Russian Reflections, Vol. 8
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Music@Menlo Live, Russian Reflections, Vol. 7
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Music@Menlo Live, Gather, Vol. 4
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Music@Menlo Live: Creative Capitals, Vol. 3
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Music@Menlo Live, Gather, Vol. 7
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Music@Menlo Live, Haydn Connections, Vol. 9
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Music@Menlo LIVE, Beethoven Unfolding, Vol. 5
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Music@Menlo Live, Russian Reflections, Vol. 2
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Music@Menlo Live: Creative Capitals, Vol. 8
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Music@Menlo LIVE, Beethoven Unfolding, Vol. 3
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Dvorák: Cello Concerto
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track: Lasst mich allein, Op. 82, No. 1 (Arr. for Cello and Piano)
track: Gypsy Songs, Op. 55, B. 104: IV. Songs my mother taught me (Arr. for Cello and Piano by Jan Vogler)
track: Humoresques, Op. 101, B. 187: VII. Poco lento e grazioso
track: Silent Woods (Klid)
track: Rondo in G Minor, Op. 94
track: Terzetto in C Major, Op. 74, B. 148: III. Scherzo. Vivace - Trio. Poco meno mosso
track: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": I. Lento maestoso
track: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": II. Poco adagio
track: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": III. Andante
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track: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": V. Allegro
track: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": VI. Lento maestoso
track: Zigeunermelodien, Op. 55: I. Mein Lied ertönt
track: Zigeunermelodien, Op. 55: II. Ei, wie mein Triangel
track: Zigeunermelodien, Op. 55: III. Rings ist der Wald stumm und still
track: Zigeunermelodien, Op. 55: IV. Als die alte Mutter mich noch lehrte singen
track: Zigeunermelodien, Op. 55: V. Reingestimmt die Saiten
track: Zigeunermelodien, Op. 55: VI. In dem weiten, breiten, luft'gen Leinenkleide
track: Zigeunermelodien, Op. 55: VII. Horstet hoch der Habicht

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Gypsy Songs, Op. 55, B. 104: IV. Songs my mother taught me (Arr. for Cello and Piano by Jan Vogler)
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duration: PT2M16S
duration ms: 136840
explicit: false
by artist: Antonín Dvořák
by artist: Jan Vogler
by artist: Juho Pohjonen
in album: Dvorák: Cello Concerto
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  date published: 2025-05-23
genre: classical
genre: late-romantic-era
genre: czech-classical
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-22T18:47:29Z
audio: Gypsy Songs, Op. 55, B. 104: IV. Songs my mother taught me (Arr. for Cello and Piano by Jan Vogler)
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Humoresques, Op. 101, B. 187: VII. Poco lento e grazioso
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duration: PT3M13S
duration ms: 193986
explicit: false
by artist: Antonín Dvořák
by artist: Tiffany Poon
in album: Dvorák: Cello Concerto
  type: MusicAlbum
  date published: 2025-05-23
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: DEE862200662
additional property: CopyrightID
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf525d633c50f9e1e9725e68f7c5b526c321149b9ab3007b3ad1f15cb90dd7b99. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200662 — a six-check JSON result.
  date published: 2026-07-07T14:50:41Z
audio: Humoresques, Op. 101, B. 187: VII. Poco lento e grazioso
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Silent Woods (Klid)
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duration: PT6M5S
duration ms: 365693
explicit: false
by artist: Antonín Dvořák
by artist: The Knights
by artist: Jan Vogler
by artist: Eric Jacobsen
in album: Dvorák: Cello Concerto
  type: MusicAlbum
  date published: 2025-05-23
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: DEE860901306
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa218abc3fc6713a7de0c5de3e757705dbe3508f1cbd15b7cc12662fbd38c0632. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860901306 — a six-check JSON result.
  date published: 2026-07-06T06:56:49Z
audio: Silent Woods (Klid)
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Rondo in G Minor, Op. 94
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duration: PT7M0S
duration ms: 420320
explicit: false
by artist: Antonín Dvořák
by artist: Jan Vogler
by artist: Helmut Branny
in album: Dvorák: Cello Concerto
  type: MusicAlbum
  date published: 2025-05-23
genre: classical
genre: late-romantic-era
genre: czech-classical
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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: 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8517f900c6e3474d8ef339fd5908f7d48f8eba524fe1834995d7e2805fa30c3f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860601177 — a six-check JSON result.
  date published: 2026-07-22T11:35:32Z
audio: Rondo in G Minor, Op. 94
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Terzetto in C Major, Op. 74, B. 148: III. Scherzo. Vivace - Trio. Poco meno mosso
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duration: PT4M11S
duration ms: 251306
explicit: false
by artist: Antonín Dvořák
by artist: Chad Hoopes
by artist: Kevin Zhu
by artist: Matthew Lipman
in album: Dvorák: Cello Concerto
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  date published: 2025-05-23
genre: classical
genre: late-romantic-era
genre: czech-classical
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dd92ddd1391823237c6a0532d019b859ea9f18cbfffae85f8cecd7c68e83d0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200654 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Terzetto in C Major, Op. 74, B. 148: III. Scherzo. Vivace - Trio. Poco meno mosso
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Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": I. Lento maestoso
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duration: PT4M3S
duration ms: 243906
explicit: false
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by artist: Jan Vogler
by artist: Chad Hoopes
by artist: Tiffany Poon
in album: Dvorák: Cello Concerto
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  date published: 2025-05-23
genre: classical
genre: late-romantic-era
genre: czech-classical
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3655e38d8914a975670f12e9e602b7dcac600bdfc6df35199f68acd9e591374. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200656 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": I. Lento maestoso
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Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": II. Poco adagio
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duration: PT6M21S
duration ms: 381080
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by artist: Jan Vogler
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genre: classical
genre: late-romantic-era
genre: czech-classical
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81271fdc3deb399806b0340b36d5e859b6ed7a46d681cf3d6dc163e6aac2a0ca. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200657 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": II. Poco 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: Time Signature
    type: PropertyValue
    value: 5
  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: Mode Name
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Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": III. Andante
type: MusicRecording
duration: PT5M32S
duration ms: 332946
explicit: false
by artist: Antonín Dvořák
by artist: Jan Vogler
by artist: Chad Hoopes
by artist: Tiffany Poon
in album: Dvorák: Cello Concerto
  type: MusicAlbum
  date published: 2025-05-23
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: DEE862200658
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T22:55:50+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9973712184d65f7dac6412b3c69f7bf5bd860118b75ed7beb6320e3720844fab
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200658
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9973712184d65f7dac6412b3c69f7bf5bd860118b75ed7beb6320e3720844fab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200658 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": III. Andante
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  additional property: Tempo (BPM)
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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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)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": IV. Andante moderato
type: MusicRecording
duration: PT4M55S
duration ms: 295533
explicit: false
by artist: Antonín Dvořák
by artist: Jan Vogler
by artist: Chad Hoopes
by artist: Tiffany Poon
in album: Dvorák: Cello Concerto
  type: MusicAlbum
  date published: 2025-05-23
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: DEE862200659
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x3d355b566a54f2c1c315d69825f046ab232720c3ba1d7546a94545118621abbd
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960209
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200659
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T05:15:54Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d355b566a54f2c1c315d69825f046ab232720c3ba1d7546a94545118621abbd. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200659 — a six-check JSON result.
  date published: 2026-07-30T05:15:54Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": IV. Andante moderato
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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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)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": V. Allegro
type: MusicRecording
duration: PT3M50S
duration ms: 230146
explicit: false
by artist: Antonín Dvořák
by artist: Jan Vogler
by artist: Chad Hoopes
by artist: Tiffany Poon
in album: Dvorák: Cello Concerto
  type: MusicAlbum
  date published: 2025-05-23
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: DEE862200660
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T09:46:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8e87eb4d6f709f8ff60cfdbe208ab9d90dfc40b2745b972c78dccfc42ac41c85
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200660
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e87eb4d6f709f8ff60cfdbe208ab9d90dfc40b2745b972c78dccfc42ac41c85. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200660 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": V. Allegro
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  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.308
  additional property: Energy
    type: PropertyValue
    value: 0.248
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.964
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.58
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.227
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.408
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
    value: Major

Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": VI. Lento maestoso
type: MusicRecording
duration: PT4M33S
duration ms: 273000
explicit: false
by artist: Antonín Dvořák
by artist: Jan Vogler
by artist: Chad Hoopes
by artist: Tiffany Poon
in album: Dvorák: Cello Concerto
  type: MusicAlbum
  date published: 2025-05-23
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: DEE862200661
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xacdf3252c59b8a48ffb6a2a3f608cb4e373fc9eff7faaabdb1785fb7a5076108
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960259
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200661
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T12:51:24Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdf3252c59b8a48ffb6a2a3f608cb4e373fc9eff7faaabdb1785fb7a5076108. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200661 — a six-check JSON result.
  date published: 2026-07-30T12:51:24Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B.166, "Dumky": VI. Lento maestoso
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.87
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.231
  additional property: Energy
    type: PropertyValue
    value: 0.226
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.88
  additional property: Liveness
    type: PropertyValue
    value: 0.092
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.091
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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Zigeunermelodien, Op. 55: I. Mein Lied ertönt
type: MusicRecording
duration: PT2M28S
duration ms: 148213
explicit: false
by artist: Antonín Dvořák
by artist: Jan Vogler
in album: Dvorák: Cello Concerto
  type: MusicAlbum
  date published: 2025-05-23
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: DEE860500481
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T21:20:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe7ccdcbb0dec8e7b577a90eff180391b9ef7523f8d01207256c23deba58dd4f3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860500481
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ccdcbb0dec8e7b577a90eff180391b9ef7523f8d01207256c23deba58dd4f3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860500481 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Zigeunermelodien, Op. 55: I. Mein Lied ertönt
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 99.4
  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: 0.273
  additional property: Energy
    type: PropertyValue
    value: 0.054
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.898
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.175
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.626
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Zigeunermelodien, Op. 55: II. Ei, wie mein Triangel
type: MusicRecording
duration: PT1M3S
duration ms: 63826
explicit: false
by artist: Antonín Dvořák
by artist: Angelika Kirchschlager
in album: Dvorák: Cello Concerto
  type: MusicAlbum
  date published: 2025-05-23
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: DEE860500482
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
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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/960259
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860500482
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T12:51:24Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5960d7d97490bb7d15e05c8a362f6853c05000f6385307b1b7aeaaa89068d63. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860500482 — a six-check JSON result.
  date published: 2026-07-30T12:51:24Z
audio: Zigeunermelodien, Op. 55: II. Ei, wie mein Triangel
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.899
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.492
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Zigeunermelodien, Op. 55: III. Rings ist der Wald stumm und still
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Zigeunermelodien, Op. 55: IV. Als die alte Mutter mich noch lehrte singen
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Zigeunermelodien, Op. 55: V. Reingestimmt die Saiten
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Zigeunermelodien, Op. 55: VI. In dem weiten, breiten, luft'gen Leinenkleide
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Zigeunermelodien, Op. 55: VII. Horstet hoch der Habicht
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Music@Menlo LIVE, French Reflections, Vol. III: Quartets and Harps
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date published: 2025-05-06