Roman Hoffstetter
type: MusicGroup
description: Roman Hoffstetter (born 24 April 1742, in Laudenbach, near Bad Mergentheim, Holy Roman Empire; died: 21 May (Baker's) or June (New Grove 2nd) 1815, in Miltenberg-am-Main, Germany; alternative spelling
popularity: 25
followers: 331
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album: Favourite Encores for String Quartet
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  date published: 1999-05-01
album: A Collection of Relaxing Classics
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  date published: 2024-06-28
album: Hommage
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  track: Beethoven: String Quartet No. 7 in F Major, Op. 59 No. 1 "Razumovsky": IV. Thème russe. Allegro
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  track: Stravinsky: Double Canon for String Quartet "Raoul Dufy in memoriam"
  track: Mozart: String Quartet No. 20 in D Major, K. 499 "Hoffmeister": IV. Allegro
  track: Hoffstetter: String Quartet in F Major, Op. 3 No. 5: II. Andante cantabile "Serenade" (Formerly Attributed to Haydn as Hob. III:17)
  track: Beethoven: String Quartet No. 16 in F Major, Op. 135: I. Allegretto (Live at Konzerthaus, Wien, 1989)
  track: Beethoven: String Quartet No. 16 in F Major, Op. 135: III. Lento assai, cantante tranquillo (Live at Konzerthaus, Wien, 1989)
album: Haydn: String Quartets, Op. 33 No. 3 "The Bird", Op. 77 Nos. 1 & 2
album: Piano Time 3
album: 101 Adagios
album: The Knot Collection of Ceremony & Wedding Music selected by The Knot's Carley Roney
album: The Best Classical Music of All Time
album: Rainforest Rhapsody
album: In the Groove - Lounge Classics
album: Ultimate Classics
album: Ich mag keine Klassik, aber das gefällt mir! - Für Kinder
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  date published: 2026-07-08T03:22:41Z
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  date published: 2026-07-08T03:53:27Z
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Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (a) Poco adagio, cantabile
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  date published: 2026-07-08T08:56:20Z
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Smetana: String Quartet No. 1 in E Minor "From My Life": III. Largo sostenuto
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duration ms: 527200
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by artist: Bedřich Smetana
by artist: Alban Berg Quartett
in album: Hommage
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genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Smetana: String Quartet No. 1 in E Minor "From My Life": III. Largo sostenuto
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Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (b) Variation I
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duration: PT1M6S
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by artist: Alban Berg Quartett
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (b) Variation I
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Beethoven: String Quartet No. 7 in F Major, Op. 59 No. 1 "Razumovsky": IV. Thème russe. Allegro
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duration: PT8M21S
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by artist: Alban Berg Quartett
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genre: chamber-music
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additional property: CopyrightID
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Beethoven: String Quartet No. 7 in F Major, Op. 59 No. 1 "Razumovsky": IV. Thème russe. Allegro
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Smetana: String Quartet No. 1 in E Minor "From My Life": IV. Vivace
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by artist: Bedřich Smetana
by artist: Alban Berg Quartett
in album: Hommage
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  date published: 2007-09-14
genre: classical
genre: late-romantic-era
genre: czech-classical
genre: early-modern-classical
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Smetana: String Quartet No. 1 in E Minor "From My Life": IV. Vivace
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Ravel: String Quartet, M. 35: IV. Vif et agité
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by artist: Alban Berg Quartett
in album: Hommage
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genre: classical
genre: impressionism
genre: neoclassicism
genre: post-romantic-era
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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: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3e40b5c20c90d3e9b9faf334e09f9eec4c97f9420e559df3effff501f801bb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8400090.
  date published: 2026-07-08T03:20:19Z
audio: Ravel: String Quartet, M. 35: IV. Vif et agité
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Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (c) Variation II
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duration: PT1M10S
duration ms: 70173
explicit: false
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by artist: Alban Berg Quartett
in album: Hommage
  type: MusicAlbum
  date published: 2007-09-14
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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
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (c) Variation II
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Mendelssohn: String Quartet No. 2 in A Minor, Op. 13, MWV R22: I. Adagio - Allegro vivace
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by artist: Felix Mendelssohn
by artist: Alban Berg Quartett
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genre: classical
genre: early-romantic-era
genre: german-romanticism
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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: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Mendelssohn: String Quartet No. 2 in A Minor, Op. 13, MWV R22: I. Adagio - Allegro vivace
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Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (d) Variation III
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by artist: Alban Berg Quartett
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (d) Variation III
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String Quartet No. 2, 'Intimate Letters': II. Adagio
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: String Quartet No. 2, 'Intimate Letters': II. Adagio
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Lyric Suite: II. Andante amoroso
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by artist: Alban Berg Quartett
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Lyric Suite: II. Andante amoroso
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Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (e) Variation IV
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by artist: Alban Berg Quartett
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": II. (e) Variation IV
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Mendelssohn: String Quartet No. 2 in A Minor, Op. 13, MWV R22: III. Intermezzo. Allegretto con moto - Allegro di molto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Mendelssohn: String Quartet No. 2 in A Minor, Op. 13, MWV R22: III. Intermezzo. Allegretto con moto - Allegro di molto
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Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": III. Menuetto. Allegro
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": III. Menuetto. Allegro
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Mendelssohn: String Quartet No. 2 in A Minor, Op. 13, MWV R22: IV. Presto
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by artist: Alban Berg Quartett
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genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Mendelssohn: String Quartet No. 2 in A Minor, Op. 13, MWV R22: IV. Presto
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String Quartet No. 2, 'Intimate Letters': IV. Allegro
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subject of: OpenTimestamps Proof of Existence
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Haydn: String Quartet in C Major, Op. 76 No. 3, Hob. III:77 "Emperor": IV. Finale. Presto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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Lyric Suite: V. Presto delirando
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subject of: OpenTimestamps Proof of Existence
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Stravinsky: Double Canon for String Quartet "Raoul Dufy in memoriam"
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subject of: OpenTimestamps Proof of Existence
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Mozart: String Quartet No. 20 in D Major, K. 499 "Hoffmeister": IV. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
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Hoffstetter: String Quartet in F Major, Op. 3 No. 5: II. Andante cantabile "Serenade" (Formerly Attributed to Haydn as Hob. III:17)
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Beethoven: String Quartet No. 16 in F Major, Op. 135: I. Allegretto (Live at Konzerthaus, Wien, 1989)
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-06T06:56:49Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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track: Haydn: String Quartet in G Major, Op. 77 No. 1, Hob. III:81: I. Allegro moderato
track: Haydn: String Quartet in F Major, Op. 77 No. 2, Hob. III:82: II. Menuetto - Trio
track: Haydn: String Quartet in F Major, Op. 77 No. 2, Hob. III:82: IV. Finale. Vivace assai
track: Hoffstetter: String Quartet in F Major, Op. 3 No. 5: II. Andante cantabile "Serenade" (Formerly Attributed to Haydn as Hob. III:17)

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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2a73108d12840e5e80579eee89505e12f16daca1bc1cff0e6f5b9133a1264b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9903704.
date published: 2026-07-07T18:50:38Z

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Haydn: String Quartet in G Major, Op. 77 No. 1, Hob. III:81: I. Allegro moderato
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T07:16:32Z
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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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Hoffstetter: String Quartet in F Major, Op. 3 No. 5: II. Andante cantabile "Serenade" (Formerly Attributed to Haydn as Hob. III:17)
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    date published: 2026-07-08T03:53:27Z
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101 Adagios
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track: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight Sonata": I. Adagio sostenuto
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track: Adagio for Strings
track: Eine kleine Nachtmusik, K. 525: Romance (Andante)
track: Pavane, Op. 50 (Choral Version)
track: Consolation No. 3, Lento placido, S.142
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Canon in D, P. 37
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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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  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3dbc3d4d9ce2e65ede5487fb346e97b7705a2106734c556bac771c8bd98820. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508403602.
  date published: 2026-07-08T03:53:27Z
audio: Eine kleine Nachtmusik, K. 525: Romance (Andante)
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Pavane, Op. 50 (Choral Version)
type: MusicRecording
duration: PT6M37S
duration ms: 397173
explicit: false
by artist: Gabriel Fauré
by artist: Choeur de l'Orchestre Symphonique de Montréal
by artist: Orchestre Symphonique de Montréal
by artist: Charles Dutoit
in album: 101 Adagios
  type: MusicAlbum
  date published: 2012-01-01
popularity: 1
isrc code: GBF078710660
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/GBF078710660
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c82ac53965d50100f02221ff9ff244709857e3c1c06621d0b972d45909c7e0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078710660.
  date published: 2026-07-08T03:53:27Z
audio: Pavane, Op. 50 (Choral Version)
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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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Consolation No. 3, Lento placido, S.142
type: MusicRecording
duration: PT3M52S
duration ms: 232173
explicit: false
by artist: Franz Liszt
by artist: Rhondda Gillespie
in album: 101 Adagios
  type: MusicAlbum
  date published: 2012-01-01
popularity: 1
genre: classical
genre: late-romantic-era
isrc code: GBF077610450
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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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077610450
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb82108e31b0488ee66cb6b524dc417b107634239092ce5c380200074a91d14b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077610450.
  date published: 2026-07-08T03:22:41Z
audio: Consolation No. 3, Lento placido, S.142
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Concerto grosso in D, Op. 6, No. 1: 2. Largo
type: MusicRecording
duration: PT3M18S
duration ms: 198120
explicit: false
by artist: Arcangelo Corelli
by artist: Alan Loveday
by artist: Carmel Kaine
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
in album: 101 Adagios
  type: MusicAlbum
  date published: 2012-01-01
popularity: 2
genre: classical
genre: early-music
genre: baroque
genre: italian-baroque
isrc code: GBBBA7350220
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0027a32d5b84ad1f93f025ad37eac7dcef4cdfbe5b97722e92a7d46221d2f470. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA7350220.
  date published: 2026-07-08T03:20:19Z
audio: Concerto grosso in D, Op. 6, No. 1: 2. Largo
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12 Concerti Grossi - Orch. Ch. Avison - Concerto No. 6 in D: 1. Largo
type: MusicRecording
duration: PT3M26S
duration ms: 206800
explicit: false
by artist: Domenico Scarlatti
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
in album: 101 Adagios
  type: MusicAlbum
  date published: 2012-01-01
popularity: 1
genre: classical
genre: early-music
genre: baroque
genre: italian-baroque
isrc code: NLA507711619
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08cd6fbb00ef63660d8f210848f3b4cf89ed5a60cfee6d05f98017c6e65c249. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507711619.
  date published: 2026-07-08T03:53:27Z
audio: 12 Concerti Grossi - Orch. Ch. Avison - Concerto No. 6 in D: 1. Largo
  type: AudioObject
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    type: PropertyValue
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    type: PropertyValue
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  additional property: Energy
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The Knot Collection of Ceremony & Wedding Music selected by The Knot's Carley Roney
type: MusicAlbum
date published: 1967
track: Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
  type: MusicRecording
  duration: PT5M0S
  duration ms: 300560
  explicit: false
  by artist: Johann Sebastian Bach
  by artist: Yo-Yo Ma
  by artist: Ton Koopman
  by artist: Amsterdam Baroque Orchestra
  in album: The Knot Collection of Ceremony & Wedding Music selected by The Knot's Carley Roney
    type: MusicAlbum
    date published: 1967
  genre: classical
  genre: classical-piano
  isrc code: USSM19805585
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:53:27Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f76d3deff0505264de3858302aca87612cefb7d2b2ff80c77ad7da83873e05e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19805585.
    date published: 2026-07-08T03:53:27Z
  audio: Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
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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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track: Cantata, BWV 147: Jesus bleibet meine Freude
  type: MusicRecording
  duration: PT2M41S
  duration ms: 161506
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  by artist: Johann Sebastian Bach
  by artist: Yo-Yo Ma
  by artist: Amsterdam Baroque Orchestra
  by artist: Ton Koopman
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    type: MusicAlbum
    date published: 1967
  genre: classical
  genre: classical-piano
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T03:20:19Z
  audio: Cantata, BWV 147: Jesus bleibet meine Freude
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    additional property: Danceability
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  by artist: Tchaikovsky Chamber Orchestra
  by artist: Lazar Gosman
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    type: MusicAlbum
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  additional property: CopyrightID
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  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: String Quartet in F Major, Op. 3, No. 5, Hob. III:17: II. Andante cantabile
track: Canon and Gigue in D Major, P. 37: Canon
track: Air from Water Music
track: Thaïs: Méditation (Arr. for Cello & Piano)
track: Gianni Schicchi: O mio babbino caro (Arr. C. Leon for Violin & Orchestra)
track: La Réjouissance from Music for the Royal Fireworks

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OTSHash
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM18800401

OTSTimestamp
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OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6103ebad7bb061aab48dd85ac4829ccc6a5aea5026602288abdb39bb7a240f45. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM18800401.
date published: 2026-06-13T13:32:09Z

String Quartet in F Major, Op. 3, No. 5, Hob. III:17: II. Andante cantabile
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additional property: Mode (Major/Minor)
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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Canon and Gigue in D Major, P. 37: Canon
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duration: PT6M29S
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by artist: Johann Pachelbel
by artist: English Chamber Orchestra
by artist: Raymond Leppard
in album: The Knot Collection of Ceremony & Wedding Music selected by The Knot's Carley Roney
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isrc code: USSM19600486
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe033e3377584619074236bde145442767ca8b85fd64cc30ae9ef3c0a12cee19c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19600486.
  date published: 2026-07-06T06:56:49Z
audio: Canon and Gigue in D Major, P. 37: Canon
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  additional property: Acousticness
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Air from Water Music
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duration: PT2M57S
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by artist: George Frideric Handel
by artist: Tafelmusik Baroque Orchestra
by artist: Jeanne Lamon
in album: The Knot Collection of Ceremony & Wedding Music selected by The Knot's Carley Roney
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genre: classical
genre: early-music
genre: baroque
genre: english-baroque
genre: german-baroque
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additional property: CopyrightID
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-08T03:53:27Z
audio: Air from Water Music
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Thaïs: Méditation (Arr. for Cello & Piano)
type: MusicRecording
duration: PT5M45S
duration ms: 345986
explicit: false
by artist: Jules Massenet
by artist: Yo-Yo Ma
by artist: Kathryn Stott
in album: The Knot Collection of Ceremony & Wedding Music selected by The Knot's Carley Roney
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genre: classical
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Thaïs: Méditation (Arr. for Cello & Piano)
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Gianni Schicchi: O mio babbino caro (Arr. C. Leon for Violin & Orchestra)
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duration: PT3M22S
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by artist: Giacomo Puccini
by artist: Joshua Bell
by artist: Michael Stern
in album: The Knot Collection of Ceremony & Wedding Music selected by The Knot's Carley Roney
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Gianni Schicchi: O mio babbino caro (Arr. C. Leon for Violin & Orchestra)
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La Réjouissance from Music for the Royal Fireworks
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duration: PT2M9S
duration ms: 129880
explicit: false
by artist: George Frideric Handel
by artist: Chamber Soloists of Washington
by artist: Edward Carroll
in album: The Knot Collection of Ceremony & Wedding Music selected by The Knot's Carley Roney
  type: MusicAlbum
  date published: 1967
genre: classical
genre: early-music
genre: baroque
genre: english-baroque
genre: german-baroque
isrc code: USSM19600362
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
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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 0x53848de63f7197c58440c3cce92faef803b45d7868ecdd8929fa189ede7ab459. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19600362.
  date published: 2026-07-06T06:56:49Z
audio: La Réjouissance from Music for the Royal Fireworks
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The Best Classical Music of All Time
type: MusicAlbum
date published: 2014-02-07
track: William Tell, IGR 33: Overture: Galop
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  by artist: Melbourne Symphony Orchestra
  by artist: Leonard Dommett
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  popularity: 2
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T03:53:27Z
  audio: William Tell, IGR 33: Overture: Galop
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  subject of: OpenTimestamps Proof of Existence
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:22:41Z

The Sleeping Beauty, Op. 66, TH. 13, Act I: 6. Waltz
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T05:09:12Z
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track: String Quartet In F Major, Hob.III No.17, Op.3 No.5 - "Serenade": II. Andante cantabile
track: Gabriel's Oboe
track: Le Carnaval des Animaux, R.125: Le Cygne
track: Symphony No. 3 in F, Op. 90: 3. Poco allegretto
track: The Piano: The Heart Asks Pleasure First

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

Symphony No. 29 in A Major, K. 201: II. Andante
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subject of: OpenTimestamps Proof of Existence
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Gabriel's Oboe
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Valence (Positivity)
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Le Carnaval des Animaux, R.125: Le Cygne
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by artist: Camille Saint-Saëns
by artist: Mischa Maisky
by artist: Orchestre de Paris
by artist: Semyon Bychkov
in album: In the Groove - Lounge Classics
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genre: classical
genre: late-romantic-era
genre: french-romanticism
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6852416475585a36722a6faf95e83f6dc5f53723cefcd54f11b567460fb8cb16. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059103270.
  date published: 2026-07-08T03:53:27Z
audio: Le Carnaval des Animaux, R.125: Le Cygne
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Symphony No. 3 in F, Op. 90: 3. Poco allegretto
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duration: PT6M15S
duration ms: 375786
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by artist: Johannes Brahms
by artist: Royal Concertgebouw Orchestra
by artist: Riccardo Chailly
in album: In the Groove - Lounge Classics
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  date published: 2008-01-01
genre: classical
genre: german-romanticism
genre: late-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/GBF079111633
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492b78337a18b2276708dcdb06b99f6e2697d5a51fb2005516501e18b56de011. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF079111633.
  date published: 2026-07-08T03:53:27Z
audio: Symphony No. 3 in F, Op. 90: 3. Poco allegretto
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The Piano: The Heart Asks Pleasure First
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duration: PT2M11S
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explicit: false
by artist: Michael Nyman
by artist: Jean-Yves Thibaudet
in album: In the Groove - Lounge Classics
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: The Piano: The Heart Asks Pleasure First
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Ultimate Classics
type: MusicAlbum
date published: 1994-01-01
track: Canon in D Major, P. 37/1 (Orch. Münchinger)
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  by artist: Stuttgart Chamber Orchestra
  by artist: Karl Münchinger
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-02T11:34:59Z
  audio: Canon in D Major, P. 37/1 (Orch. Münchinger)
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Valence (Positivity)
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track: Rigoletto, Act III: La donna è mobile
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  duration: PT2M21S
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  by artist: Giuseppe Verdi
  by artist: Luciano Pavarotti
  by artist: London Symphony Orchestra
  by artist: Richard Bonynge
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    type: MusicAlbum
    date published: 1994-01-01
  genre: classical
  genre: opera
  isrc code: GBF077130101
  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: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T03:22:41Z
  audio: Rigoletto, Act III: La donna è mobile
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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: 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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track: The Nutcracker Suite, Op. 71a: Dance of the Sugar Plum Fairy – Waltz of the Flowers
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  by artist: Wiener Philharmoniker
  by artist: Herbert von Karajan
  in album: Ultimate Classics
    type: MusicAlbum
    date published: 1994-01-01
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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: OTSBitcoinBlock
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  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: The Nutcracker Suite, Op. 71a: Dance of the Sugar Plum Fairy – Waltz of the Flowers
track: Trumpet Voluntary

OTSHash
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd753db23f9831d9552faba7c6e15b0e53f48483077323cd1b900b077eb3cf7ec. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076110590.
date published: 2026-07-02T03:30:09Z

The Nutcracker Suite, Op. 71a: Dance of the Sugar Plum Fairy – Waltz of the Flowers
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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Trumpet Voluntary
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duration: PT2M47S
duration ms: 167493
explicit: false
by artist: Jeremiah Clarke
by artist: Philip Jones
by artist: Elgar Howarth
by artist: The Philip Jones Brass Ensemble
in album: Ultimate Classics
  type: MusicAlbum
  date published: 1994-01-01
isrc code: GBF077800040
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: 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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Humoresque in G-Flat Major, Op. 101, No. 7 (Arranged for Violin & Orchestra)
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Die Zauberflöte, K. 620: Der Vogelfänger bin ich ja
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Rigoletto: Act IV: La donna è mobile
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Die Forelle, D. 550 (Arr. for Cello, Piano and Contrabass)
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Kinderszenen, Op. 15: VII. Träumerei
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Le carnaval des animaux, R. 125: No. 12, Fossiles
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Suite No. 2 for Jazz Orchestra: VII. Waltz II
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Flight of the Bumblebee
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The Four Seasons - Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": I. Allegro
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Thaïs: Méditation (Arr. for Cello & Piano)
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subject of: OpenTimestamps Proof of Existence
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The Nutcracker, Op. 71, TH 14: Act II: No. 14, Pas de deux. Variation II, Dance of the Sugar-Plum Fairy
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Peer Gynt Suite No. 1, Op. 46: IV. In the Hall of the Mountain King
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subject of: OpenTimestamps Proof of Existence
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Pictures at an Exhibition - Orchestra Version: No. 3: Les Tuileries (Dispoute d'enfants après jeux)
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subject of: OpenTimestamps Proof of Existence
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Triangel
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String Quartet in F Major, Op. 3, No. 5, Hob. III:17: II. Andante cantabile
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Frühlingsstimmenwalzer, Op. 410
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The Typewriter
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subject of: OpenTimestamps Proof of Existence
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audio: The Typewriter
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Clarinet Concerto in A Major, K. 622: II. Adagio
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subject of: OpenTimestamps Proof of Existence
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Fantasia on Greensleeves
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subject of: OpenTimestamps Proof of Existence
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audio: Fantasia on Greensleeves
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Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
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Rondo alla Ingharese quasi un Capriccio in G Major, Op 129 "Die Wuth über den verlorenen Groschen"
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  date published: 2026-07-08T03:53:27Z
audio: Rondo alla Ingharese quasi un Capriccio in G Major, Op 129 "Die Wuth über den verlorenen Groschen"
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Piano Sonata No. 11 in A Major, K. 331/300i: III. Alla Turca
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T18:50:38Z
audio: Piano Sonata No. 11 in A Major, K. 331/300i: III. Alla Turca
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Suite for Orchestra No. 3 in D Major, BWV 1068: II. Air
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Ultimate Classical Chill Out
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  additional property: OTSVerifyInstructions
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    date published: 2026-07-08T08:56:20Z
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  subject of: OpenTimestamps Proof of Existence
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track: Water Music Suite No. 1 in F Major, HWV 348: Air
track: Chants d'Auvergne: 2. Bailero
track: Lyric Pieces, Op. 54: Nocturne
track: Dream Children, Op. 43
track: Images I, CD 105: I. Reflets dans l’eau
track: La Navaraisse: Nocturne
track: Jeux d'eau, M. 30
track: String Quartet No. 2 in D: Notturno
track: The Four Seasons, Winter, Violin Concerto in F Minor, RV 297, Op. 8 No. 4: II. Largo
track: 2 Nordic Melodies, Op. 63: 2. Cowkeeper's Tune and Country Dance
track: 24 Preludes, Op. 28: No. 15 in D-Flat Major "Raindrop Prelude"
track: La Vierge / Scene 4: The Assumption: Le dernier sommeil de la Vièrge (The Last Sleep of the Virgin)
track: Die Forelle
track: A Midsummer Night's Dream, Op. 61: Nocturne
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track: Auf dem Wasser zu singen, S.558 No. 2 (after Schubert, D.774)
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:20:19Z

Nocturne No. 2 in E flat, Op. 9 No. 2
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Water Music Suite No. 1 in F Major, HWV 348: Air
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Water Music Suite No. 1 in F Major, HWV 348: Air
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Chants d'Auvergne: 2. Bailero
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
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Lyric Pieces, Op. 54: Nocturne
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Lyric Pieces, Op. 54: Nocturne
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Dream Children, Op. 43
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audio: Dream Children, Op. 43
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Images I, CD 105: I. Reflets dans l’eau
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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La Navaraisse: Nocturne
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subject of: OpenTimestamps Proof of Existence
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Jeux d'eau, M. 30
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subject of: OpenTimestamps Proof of Existence
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audio: Jeux d'eau, M. 30
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String Quartet No. 2 in D: Notturno
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subject of: OpenTimestamps Proof of Existence
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audio: String Quartet No. 2 in D: Notturno
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The Four Seasons, Winter, Violin Concerto in F Minor, RV 297, Op. 8 No. 4: II. Largo
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: The Four Seasons, Winter, Violin Concerto in F Minor, RV 297, Op. 8 No. 4: II. Largo
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2 Nordic Melodies, Op. 63: 2. Cowkeeper's Tune and Country Dance
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: 2 Nordic Melodies, Op. 63: 2. Cowkeeper's Tune and Country Dance
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24 Preludes, Op. 28: No. 15 in D-Flat Major "Raindrop Prelude"
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: 24 Preludes, Op. 28: No. 15 in D-Flat Major "Raindrop Prelude"
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    value: 0.28
  additional property: Energy
    type: PropertyValue
    value: 0.009
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.926
  additional property: Liveness
    type: PropertyValue
    value: 0.068
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.053
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.801
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

La Vierge / Scene 4: The Assumption: Le dernier sommeil de la Vièrge (The Last Sleep of the Virgin)
type: MusicRecording
duration: PT5M5S
duration ms: 305373
explicit: false
by artist: Jules Massenet
by artist: The New Symphony Orchestra Of London
by artist: Raymond Agoult
in album: Ultimate Classical Chill Out
  type: MusicAlbum
  date published: 1993-01-01
genre: classical
isrc code: GBF075910900
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T07:21:15+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7c2dfdcc524497d170d006f7f3892e64038c82ce33d23ec8c2a4276088ef76b1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075910900
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2dfdcc524497d170d006f7f3892e64038c82ce33d23ec8c2a4276088ef76b1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF075910900.
  date published: 2026-07-08T03:53:27Z
audio: La Vierge / Scene 4: The Assumption: Le dernier sommeil de la Vièrge (The Last Sleep of the Virgin)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.915
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.173
  additional property: Energy
    type: PropertyValue
    value: 0.159
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.81
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.281
  additional property: Liveness
    type: PropertyValue
    value: 0.116
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.879
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Die Forelle
type: MusicRecording
duration: PT3M45S
duration ms: 225000
explicit: false
by artist: Franz Liszt
by artist: Varda Nishry
in album: Ultimate Classical Chill Out
  type: MusicAlbum
  date published: 1993-01-01
genre: classical
genre: late-romantic-era
isrc code: GBF076810390
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T16:32:48+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4c15cbe733add24256e7968a027755b9e2bd18f85a784393fca513eb768f9c98
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076810390
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c15cbe733add24256e7968a027755b9e2bd18f85a784393fca513eb768f9c98. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076810390.
  date published: 2026-07-08T03:53:27Z
audio: Die Forelle
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 94.912
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.419
  additional property: Energy
    type: PropertyValue
    value: 0.109
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.914
  additional property: Liveness
    type: PropertyValue
    value: 0.106
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.408
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.398
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

A Midsummer Night's Dream, Op. 61: Nocturne
type: MusicRecording
duration: PT6M44S
duration ms: 404360
explicit: false
by artist: Felix Mendelssohn
by artist: New Philharmonia Orchestra
by artist: Rafael Frühbeck de Burgos
in album: Ultimate Classical Chill Out
  type: MusicAlbum
  date published: 1993-01-01
genre: classical
genre: early-romantic-era
genre: german-romanticism
isrc code: GBF076810855
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T06:23:06+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe3ec9a3a4943af11e1aa32c55c5f7b3a9f92f7c7db8437b3f616810895320144
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076810855
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ec9a3a4943af11e1aa32c55c5f7b3a9f92f7c7db8437b3f616810895320144. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076810855.
  date published: 2026-07-08T08:56:20Z
audio: A Midsummer Night's Dream, Op. 61: Nocturne
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 145.105
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.143
  additional property: Energy
    type: PropertyValue
    value: 0.012
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.98
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.705
  additional property: Liveness
    type: PropertyValue
    value: 0.078
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.662
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Two Aquarelles: Gaily, but not too quick
type: MusicRecording
duration: PT2M34S
duration ms: 154893
explicit: false
by artist: Frederick Delius
by artist: English Chamber Orchestra
by artist: Benjamin Britten
in album: Ultimate Classical Chill Out
  type: MusicAlbum
  date published: 1993-01-01
isrc code: GBF076810502
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T10:17:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6b410c87b5023f6d4f579c360357d538afdaec345398196cf752a2c7b135e0b7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076810502
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b410c87b5023f6d4f579c360357d538afdaec345398196cf752a2c7b135e0b7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076810502.
  date published: 2026-07-08T03:22:41Z
audio: Two Aquarelles: Gaily, but not too quick
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 128.107
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.249
  additional property: Energy
    type: PropertyValue
    value: 0.106
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.979
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.863
  additional property: Liveness
    type: PropertyValue
    value: 0.2
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.039
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.707
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Pavane, Op. 50
type: MusicRecording
duration: PT8M17S
duration ms: 497000
explicit: false
by artist: Gabriel Fauré
by artist: London Philharmonic Orchestra
by artist: Bernard Herrmann
in album: Ultimate Classical Chill Out
  type: MusicAlbum
  date published: 1993-01-01
isrc code: GBF077010730
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T10:03:55+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x289936b1462bd9ca790ee35266f9d5c60b244b0f3756bc5d1b529688df52ad81
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077010730
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289936b1462bd9ca790ee35266f9d5c60b244b0f3756bc5d1b529688df52ad81. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077010730.
  date published: 2026-07-02T05:09:12Z
audio: Pavane, Op. 50
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.686
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.166
  additional property: Energy
    type: PropertyValue
    value: 0.098
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.979
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.917
  additional property: Liveness
    type: PropertyValue
    value: 0.129
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.037
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.813
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Auf dem Wasser zu singen, S.558 No. 2 (after Schubert, D.774)
type: MusicRecording
duration: PT5M11S
duration ms: 311306
explicit: false
by artist: Franz Liszt
by artist: Jorge Bolet
in album: Ultimate Classical Chill Out
  type: MusicAlbum
  date published: 1993-01-01
genre: classical
genre: late-romantic-era
isrc code: GBF078140108
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T10:37:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xda9a5b2d90922a611d5549ccfd2592348b817a49b875f026bce02d9bd184bd99
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/GBF078140108
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9a5b2d90922a611d5549ccfd2592348b817a49b875f026bce02d9bd184bd99. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078140108.
  date published: 2026-07-08T03:20:19Z
audio: Auf dem Wasser zu singen, S.558 No. 2 (after Schubert, D.774)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 95.51
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.18
  additional property: Energy
    type: PropertyValue
    value: 0.073
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.911
  additional property: Liveness
    type: PropertyValue
    value: 0.09
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.061
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.951
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Minor

The Blue Danube Waltz
type: MusicRecording
duration: PT7M57S
duration ms: 477000
explicit: false
by artist: Johann Strauss II
by artist: Wiener Staatsopernchor
by artist: Wiener Philharmoniker
by artist: Willi Boskovsky
in album: Ultimate Classical Chill Out
  type: MusicAlbum
  date published: 1993-01-01
isrc code: GBF077311100
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-19T09:04:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0af4bb53e6963ade4cc6abb1ad6347583ecd95d5ac8452d1c0f7bf7937361db3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077311100
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af4bb53e6963ade4cc6abb1ad6347583ecd95d5ac8452d1c0f7bf7937361db3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077311100.
  date published: 2026-07-02T03:30:09Z
audio: The Blue Danube Waltz
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 174.061
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.216
  additional property: Energy
    type: PropertyValue
    value: 0.209
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.986
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.724
  additional property: Liveness
    type: PropertyValue
    value: 0.313
  additional property: Valence (Positivity)
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Carmen Suite No. 1: 5. Les toréadors
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Voices of Spring, Waltz, Op. 410
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Serenade in G, K.525 "Eine kleine Nachtmusik" - Orchestral version: 1. Allegro
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6367f873708fa864fc02ad88631ea5eab2d2a01a2f80d2f13f9513466301323d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508513509.
  date published: 2026-07-02T03:55:08Z
audio: Symphony No. 40 In G Minor, K.550: 1. Molto allegro - Excerpt
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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Boléro
type: MusicRecording
duration: PT4M38S
duration ms: 278000
explicit: false
by artist: Maurice Ravel
by artist: Orchestre de Paris
by artist: Semyon Bychkov
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 14
genre: classical
genre: impressionism
genre: neoclassicism
genre: post-romantic-era
isrc code: NLA509106509
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6941541680d37e91e871ad6dd0cf92c4478459af937bebadd4f7a169ae654e53. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509106509.
  date published: 2026-07-02T03:30:09Z
audio: Boléro
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Peer Gynt, Op. 23 - Concert version by Kurt Masur & Friedhelm Eberle: Prelude: Morning Mood
type: MusicRecording
duration: PT4M18S
duration ms: 258000
explicit: false
by artist: Edvard Grieg
by artist: Gewandhausorchester
by artist: Kurt Masur
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 11
genre: classical
genre: late-romantic-era
genre: norwegian-classical
isrc code: NLA508703017
additional property: CopyrightID
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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/NLA508703017
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0788f05c8d5c96b4e6249a78561fca5e4e46dd870a5f907b6c6306e0896d7606. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508703017.
  date published: 2026-07-02T11:38:34Z
audio: Peer Gynt, Op. 23 - Concert version by Kurt Masur & Friedhelm Eberle: Prelude: Morning Mood
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Rhapsody on a Theme by Paganini, Op. 43: Variation 18
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duration: PT2M34S
duration ms: 154000
explicit: false
by artist: Sergei Rachmaninoff
by artist: Neeme Järvi
by artist: Bella Davidovich
by artist: Royal Concertgebouw Orchestra
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 11
genre: classical
genre: classical-piano
isrc code: NLA508109310
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Rhapsody on a Theme by Paganini, Op. 43: Variation 18
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Le Carnaval des Animaux, R. 125: Le Cygne
type: MusicRecording
duration: PT3M12S
duration ms: 192000
explicit: false
by artist: Camille Saint-Saëns
by artist: Mischa Maisky
by artist: Martha Argerich
by artist: Nelson Freire
in album: 100 Classical Favourites
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popularity: 8
genre: classical
genre: late-romantic-era
genre: french-romanticism
isrc code: NLA508531313
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebc39e1912b2abecfd50027089f12b481474da773d87c1d08b23d0639e64f84. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508531313.
  date published: 2026-07-02T11:34:59Z
audio: Le Carnaval des Animaux, R. 125: Le Cygne
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Liebestraum No. 3 in A flat, S.541 No. 3
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duration: PT5M0S
duration ms: 300000
explicit: false
by artist: Franz Liszt
by artist: Claudio Arrau
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 12
genre: classical
genre: late-romantic-era
isrc code: NLA508531106
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
  type: PropertyValue
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-02T03:55:08Z
audio: Liebestraum No. 3 in A flat, S.541 No. 3
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String Quintet E, Op.13, No.5: 3. Menuetto
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duration: PT4M5S
duration ms: 245000
explicit: false
by artist: Luigi Boccherini
by artist: I Musici
in album: 100 Classical Favourites
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  date published: 1998-01-01
popularity: 12
genre: classical
isrc code: NLA508208908
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: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: String Quintet E, Op.13, No.5: 3. Menuetto
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Herz und Mund und Tat und Leben, Cantata BWV 147: Jesu Joy Of Man's Desiring
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duration: PT3M13S
duration ms: 193000
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by artist: Johann Sebastian Bach
by artist: St. Paul's Cathedral Choir
by artist: Neil Black
by artist: English Chamber Orchestra
by artist: Barry Rose
in album: 100 Classical Favourites
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  date published: 1998-01-01
popularity: 11
genre: classical
genre: classical-piano
isrc code: NLA508325104
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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  value: 2026-06-10T04:57:19+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956349
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508325104
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T11:34:59Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb3fff64ae53ea817996e7d7b918c2af37fd788291adef2d3c359387707941a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508325104.
  date published: 2026-07-02T11:34:59Z
audio: Herz und Mund und Tat und Leben, Cantata BWV 147: Jesu Joy Of Man's Desiring
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  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
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.553
  additional property: Liveness
    type: PropertyValue
    value: 0.156
  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Nocturne No. 2 in E-Flat Major, Op. 9 No. 2
type: MusicRecording
duration: PT4M47S
duration ms: 287000
explicit: false
by artist: Frédéric Chopin
by artist: Claudio Arrau
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 10
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: NLA507700423
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507700423
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545e104c3251ca110c3a4ee1686deb51cd40d0316a77578049ef0fd8b5ceb1cd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507700423.
  date published: 2026-07-02T05:09:12Z
audio: Nocturne No. 2 in E-Flat Major, Op. 9 No. 2
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  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Loudness (dB)
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Canon in D
type: MusicRecording
duration: PT4M41S
duration ms: 281506
explicit: false
by artist: Johann Pachelbel
by artist: I Musici
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 8
isrc code: NLA508208907
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x80c795a35a01edeca41f4d15cfd5140cdd596c768f5e0f3dd822f464a1d6ef1f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508208907
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c795a35a01edeca41f4d15cfd5140cdd596c768f5e0f3dd822f464a1d6ef1f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508208907.
  date published: 2026-07-06T06:56:49Z
audio: Canon in D
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  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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  additional property: Key Name
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  additional property: Mode Name
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight Sonata": I. Adagio sostenuto
type: MusicRecording
duration: PT6M49S
duration ms: 409000
explicit: false
by artist: Ludwig van Beethoven
by artist: Claudio Arrau
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 11
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: NLA506200535
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-25T19:18:15+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x98f2395f6bdc2a41c37bfc5623c3bc19c49338dcc9fb9e1f8b871d4019f8b81c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956351
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956351
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506200535
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T11:38:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f2395f6bdc2a41c37bfc5623c3bc19c49338dcc9fb9e1f8b871d4019f8b81c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506200535.
  date published: 2026-07-02T11:38:34Z
audio: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight Sonata": I. Adagio sostenuto
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Key Name
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La Gioconda / Act 3: Dance Of The Hours
type: MusicRecording
duration: PT1M26S
duration ms: 86000
explicit: false
by artist: Amilcare Ponchielli
by artist: Staatskapelle Dresden
by artist: Silvio Varviso
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 32
isrc code: NLA508330110
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T09:41:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xefbcac279ae31ba5d01fd1b4dc8a7a1989660a1c41493f5f82dad5f9dcf7f177
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953528
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508330110
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbcac279ae31ba5d01fd1b4dc8a7a1989660a1c41493f5f82dad5f9dcf7f177. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508330110.
  date published: 2026-06-13T15:41:10Z
audio: La Gioconda / Act 3: Dance Of The Hours
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.464
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.055
  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  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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  additional property: Key Name
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Il barbiere di Siviglia / Act I: No. 2 Cavatina: "Largo al factotum"
type: MusicRecording
duration: PT4M55S
duration ms: 295000
explicit: false
by artist: Gioachino Rossini
by artist: Dmitri Hvorostovsky
by artist: Philharmonia Orchestra
by artist: Ion Marin
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 10
genre: classical
genre: opera
isrc code: NLA509108001
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T23:00:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x810ab94a7bf5b7a85cdc70138725a361a5e8aa47395d733986906d64f563d926
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956351
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956351
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509108001
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T11:38:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810ab94a7bf5b7a85cdc70138725a361a5e8aa47395d733986906d64f563d926. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509108001.
  date published: 2026-07-02T11:38:34Z
audio: Il barbiere di Siviglia / Act I: No. 2 Cavatina: "Largo al factotum"
  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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    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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Les Contes d'Hoffmann / Act 4: Entr'acte (Barcarolle)
type: MusicRecording
duration: PT3M48S
duration ms: 228666
explicit: false
by artist: Jacques Offenbach
by artist: Staatskapelle Dresden
by artist: Silvio Varviso
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 7
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
isrc code: NLA508330109
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T12:19:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x580d9f3236df181f9fa71932e9e231d95ae1d4d8428b49114b89059e92f535f7
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 957073
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957073
additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580d9f3236df181f9fa71932e9e231d95ae1d4d8428b49114b89059e92f535f7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508330109.
  date published: 2026-07-07T18:39:05Z
audio: Les Contes d'Hoffmann / Act 4: Entr'acte (Barcarolle)
  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
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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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21 Hungarian Dances, WoO 1 - Orchestral Version: No. 5 in G Minor
type: MusicRecording
duration: PT2M44S
duration ms: 164000
explicit: false
by artist: Johannes Brahms
by artist: Gewandhausorchester
by artist: Kurt Masur
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 12
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: NLA508118005
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T11:37:55+00:00
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/NLA508118005
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd901cd64ae886b9941d5ee4144f2068c57ba0ddd9a7bffe01db00ae2bc4259. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508118005.
  date published: 2026-07-02T05:09:12Z
audio: 21 Hungarian Dances, WoO 1 - Orchestral Version: No. 5 in G Minor
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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William Tell: Overture
type: MusicRecording
duration: PT3M1S
duration ms: 181666
explicit: false
by artist: Gioachino Rossini
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 22
genre: classical
genre: opera
isrc code: NLA507510008
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
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507510008
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563c4e3dc8ed69711cea2537844d716c117b1aca9cc2ffa1fa0f4ac0fbd94f0b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507510008.
  date published: 2026-06-13T13:32:09Z
audio: William Tell: Overture
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.451
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.947
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.918
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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    value: 0.592
  additional property: Loudness (dB)
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  additional property: Key Name
    type: PropertyValue
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Aida / Act 2: "Gloria all'Egitto"
type: MusicRecording
duration: PT3M53S
duration ms: 233000
explicit: false
by artist: Giuseppe Verdi
by artist: Dresden State Opera Chorus
by artist: Chor der Staatsoper Dresden
by artist: Staatskapelle Dresden
by artist: Silvio Varviso
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 12
genre: classical
genre: opera
isrc code: NLA508213211
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T11:13:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x633336991feb5f6873e2bf1bcfa3ae02863458b307b76f020c2c72d3d6582097
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508213211
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633336991feb5f6873e2bf1bcfa3ae02863458b307b76f020c2c72d3d6582097. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508213211.
  date published: 2026-07-02T03:55:08Z
audio: Aida / Act 2: "Gloria all'Egitto"
  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
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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"Pomp and Circumstance," Op. 39: March, No. 1 in D
type: MusicRecording
duration: PT2M0S
duration ms: 120333
explicit: false
by artist: Edward Elgar
by artist: Royal Concertgebouw Orchestra
by artist: Sir Neville Marriner
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 10
genre: classical
genre: late-romantic-era
genre: british-modern-classical
genre: victorian-britain
isrc code: NLA507709419
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-26T18:38:10+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xadb052c75408484d235d5a216f19a9f90ffbb9b55420bdab08f2f6c53e08a56f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956349
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956349
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507709419
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T11:34:59Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb052c75408484d235d5a216f19a9f90ffbb9b55420bdab08f2f6c53e08a56f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507709419.
  date published: 2026-07-02T11:34:59Z
audio: "Pomp and Circumstance," Op. 39: March, No. 1 in D
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.181
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
    value: 0.033
  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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The Liberty Bell
type: MusicRecording
duration: PT3M25S
duration ms: 205000
explicit: false
by artist: John Philip Sousa
by artist: Eastman Wind Ensemble
by artist: Frederick Fennell
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 7
isrc code: NLA506001374
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T07:47:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x616c454bcc840ac6f81ca0ae5a7accf43b672614a22aa5b2ebd3ec4c17c839a9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957073
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957073
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506001374
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:39:05Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616c454bcc840ac6f81ca0ae5a7accf43b672614a22aa5b2ebd3ec4c17c839a9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506001374.
  date published: 2026-07-07T18:39:05Z
audio: The Liberty Bell
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 136.533
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.633
  additional property: Energy
    type: PropertyValue
    value: 0.526
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.762
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.605
  additional property: Liveness
    type: PropertyValue
    value: 0.254
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.605
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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    value: F
  additional property: Mode Name
    type: PropertyValue
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Violin Concerto In E Minor, Op. 64, MWV O14: 1. Allegro molto appassionato
type: MusicRecording
duration: PT3M19S
duration ms: 199000
explicit: false
by artist: Felix Mendelssohn
by artist: Henryk Szeryng
by artist: Royal Concertgebouw Orchestra
by artist: Bernard Haitink
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 11
genre: classical
genre: early-romantic-era
genre: german-romanticism
isrc code: NLA507501107
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-25T16:59:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x930a68d1f7d5adcf5b266a7383947ae60c129a0a85f244008a5aec6526a2e3e2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956351
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956351
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507501107
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T11:38:34Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930a68d1f7d5adcf5b266a7383947ae60c129a0a85f244008a5aec6526a2e3e2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507501107.
  date published: 2026-07-02T11:38:34Z
audio: Violin Concerto In E Minor, Op. 64, MWV O14: 1. Allegro molto appassionato
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 111.309
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.45
  additional property: Energy
    type: PropertyValue
    value: 0.138
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.944
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.016
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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    value: 0.47
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.363
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Overture Orpheus in the Underworld
type: MusicRecording
duration: PT1M49S
duration ms: 109000
explicit: false
by artist: Jacques Offenbach
by artist: Philharmonia Orchestra
by artist: Sir Neville Marriner
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 23
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
isrc code: NLA507911309
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T19:12:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xae674abd8b7f3f6df305dbbd1128cdb61779085f917cb798b33b848ce2daceaf
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507911309
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae674abd8b7f3f6df305dbbd1128cdb61779085f917cb798b33b848ce2daceaf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507911309.
  date published: 2026-07-02T03:30:09Z
audio: Overture Orpheus in the Underworld
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 161.478
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.326
  additional property: Energy
    type: PropertyValue
    value: 0.663
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.934
  additional property: Liveness
    type: PropertyValue
    value: 0.074
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.846
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Suite No. 3 in D, BWV 1068: 2. Air
type: MusicRecording
duration: PT4M5S
duration ms: 245000
explicit: false
by artist: Johann Sebastian Bach
by artist: Carl Philipp Emanuel Bach Chamber Orchestra
by artist: Peter Schreier
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 8
genre: classical
genre: classical-piano
isrc code: NLA509011621
additional property: CopyrightID
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509011621
additional property: OTSTimestamp
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  value: 2026-07-06T07:53:57Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b20d45baa0d8033ba0cac979a47e6b8bea8ba8f4fa6bb98fa66a05c449840f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509011621.
  date published: 2026-07-06T07:53:57Z
audio: Suite No. 3 in D, BWV 1068: 2. Air
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  additional property: Mode (Major/Minor)
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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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Pelléas et Mélisande, Op. 80: 4. Sicilienne
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duration: PT3M24S
duration ms: 204000
explicit: false
by artist: Gabriel Fauré
by artist: Rotterdam Philharmonic Orchestra
by artist: David Zinman
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 9
isrc code: NLA507901814
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507901814
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8108f3349ad8d7bc8fa77796b8150ab9b80298e9a1e3be0f55dc0fdeb933d87f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507901814.
  date published: 2026-07-06T06:56:49Z
audio: Pelléas et Mélisande, Op. 80: 4. Sicilienne
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  additional property: Danceability
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Nulla in mundo pax, R.630: 1. Nulla in mundo pax (Larghetto)
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duration: PT2M41S
duration ms: 161000
explicit: false
by artist: Antonio Vivaldi
by artist: Elly Ameling
by artist: Jeffrey Tate
by artist: English Chamber Orchestra
by artist: Vittorio Negri
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 9
isrc code: NLA507710521
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956894
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507710521
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T07:53:57Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498b4134c4d06e5c415575665971c456acc5572746ba2a8b441d04bd134e4cfb. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507710521.
  date published: 2026-07-06T07:53:57Z
audio: Nulla in mundo pax, R.630: 1. Nulla in mundo pax (Larghetto)
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Energy
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  additional property: Acousticness
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Recuerdos de la Alhambra
type: MusicRecording
duration: PT3M33S
duration ms: 213000
explicit: false
by artist: Francisco Tárrega
by artist: Pepe Romero
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 11
genre: spanish-classical
genre: late-romantic-era
isrc code: NLA506200778
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/NLA506200778
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c56924c8fe400a9ce64823bd266c6a9ab20163272383c5fb17f70045805dca8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506200778.
  date published: 2026-07-02T11:38:34Z
audio: Recuerdos de la Alhambra
  type: AudioObject
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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
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Adagio from Spartacus: Onedin Line theme
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duration: PT2M51S
duration ms: 171000
explicit: false
by artist: Aram Khachaturian
by artist: Mariinsky Orchestra
by artist: Valery Gergiev
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 18
genre: classical
isrc code: NLA509308111
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x81e70b76141195af1e1d1b9813b844ecb4a72852953fdb6f5090af4706c246c8
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509308111
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e70b76141195af1e1d1b9813b844ecb4a72852953fdb6f5090af4706c246c8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509308111.
  date published: 2026-07-02T03:30:09Z
audio: Adagio from Spartacus: Onedin Line theme
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
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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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Romeo and Juliet, Op. 64 / Act 1: 13. Dance Of The Knights
type: MusicRecording
duration: PT5M24S
duration ms: 324000
explicit: false
by artist: Sergei Prokofiev
by artist: Mariinsky Orchestra
by artist: Valery Gergiev
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 9
genre: classical
genre: orchestra
genre: neoclassical
isrc code: NLA509002237
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T16:17:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfcd9b98a425d8022d09c906cce44bbdc5ca7c42ca0ddbdfb83f40eadbc6482fc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956856
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956856
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509002237
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd9b98a425d8022d09c906cce44bbdc5ca7c42ca0ddbdfb83f40eadbc6482fc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509002237.
  date published: 2026-07-06T01:25:57Z
audio: Romeo and Juliet, Op. 64 / Act 1: 13. Dance Of The Knights
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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Ouverture solennelle "1812," Op. 49
type: MusicRecording
duration: PT2M31S
duration ms: 151000
explicit: false
by artist: Pyotr Ilyich Tchaikovsky
by artist: Royal Concertgebouw Orchestra
by artist: Bernard Haitink
in album: 100 Classical Favourites
  type: MusicAlbum
  date published: 1998-01-01
popularity: 10
isrc code: NLA507201067
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T03:36:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x13e6fd95116d2c2b27adcd9299ad2ead8576a47ac0e10764cf44483ebd7467f9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956891
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956891
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507201067
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e6fd95116d2c2b27adcd9299ad2ead8576a47ac0e10764cf44483ebd7467f9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507201067.
  date published: 2026-07-06T07:16:32Z
audio: Ouverture solennelle "1812," Op. 49
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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Pachelbel: Canon and Gigue
type: MusicAlbum
date published: 2007-01-01
track: String Quintet in E Major, G. 275: III. Menuetto
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  duration: PT3M23S
  duration ms: 203573
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  by artist: Luigi Boccherini
  by artist: Orpheus Chamber Orchestra
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    type: MusicAlbum
    date published: 2007-01-01
  genre: classical
  isrc code: DEF059203740
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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  subject of: OpenTimestamps Proof of Existence
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T08:56:20Z
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-02T05:09:12Z

King Arthur, Z. 628 "The British Worthy": Aire. Minuet
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-07T14:04:01Z
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  subject of: OpenTimestamps Proof of Existence
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  subject of: OpenTimestamps Proof of Existence
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track: Crux Fidelis (after "Ombra ma fu"- Xerses, HWV 40)
track: String Quartet in F Major, Op. 3, No. 5 (formerly attrib. J. Haydn): Serenade
track: Gymnopédie No. 3. Lent et grave
track: Ancient Airs And Dances, Suite No. 3, P. 172: 1. Italiana
track: Clarinet Concerto in A Major, K. 622: II. Adagio
track: Piano Concerto No. 21 in C Major, K. 467: II. Andante
track: Les Contes d'Hoffmann / Act 2: "Belle nuit, ô nuit d'amour"

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OpenTimestamps Proof of Existence
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Lakmé / Act 1: Viens, Mallika, ... Dôme épais (Flower Duet)
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Crux Fidelis (after "Ombra ma fu"- Xerses, HWV 40)
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String Quartet in F Major, Op. 3, No. 5 (formerly attrib. J. Haydn): Serenade
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Gymnopédie No. 3. Lent et grave
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Ancient Airs And Dances, Suite No. 3, P. 172: 1. Italiana
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Clarinet Concerto in A Major, K. 622: II. Adagio
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Piano Concerto No. 21 in C Major, K. 467: II. Andante
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Les Contes d'Hoffmann / Act 2: "Belle nuit, ô nuit d'amour"
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