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genre: classical
genre: classical piano
description: thumb|Stephen Kovacevich in 1970 Stephen Kovacevich (born October 17, 1940) is an American classical pianist and conductor.Adrian Room, Dictionary of Pseudonyms: 13,000 Assumed Names and Their Origins
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  track: Debussy: Épigraphes antiques, CD 139, L. 131: No. 2, Pour un tombeau sans nom (Arr. Lenski for Flute and Piano)
  track: Ravel: 3 Chansons madécasses, M. 78: No. 3, Il est doux de se coucher
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album: "A Selection" - Kovacevich plays Mozart, Beethoven & Chopin
album: Bagatelles. Beethoven, Chopin, Schubert, Brahms & Debussy
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album: Beethoven: Popular Piano Sonatas
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album: Bartók, Debussy, Mozart - Music For 2 Pianos
album: Beethoven: Diabelli Variations - Bach: Partita No.4
album: Beethoven: Piano Sonatas
album: Beethoven: Piano Concerto No.5 - "Emperor"; Piano Concerto No.4
album: Bartók: The Piano Concertos
album: Schubert: Piano Sonata No. 21 D. 960, Moments Musicaux & Allegretto, D. 915
album: Stephen Kovacevich plays Beethoven
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album: Beethoven: Bagatelles, Op. 119, Piano Sonatas Nos. 26 "Les Adieux" & 29 "Hammerklavier"
album: Beethoven: Complete Piano Sonatas
album: Beethoven: Piano Sonatas Nos. 12, 13, 14 "Moonlight", 19 & 20
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album: Beethoven: Piano Sonatas Nos. 5, 6, 7 & 15 "Pastoral"
album: Dvorák: The Complete String Quintets
album: Brahms: Klavierkonzert Nr.2, Op.83 - Klavierstücke, Op.76
album: Beethoven: Piano Sonatas Nos. 8 "Pathétique", 9, 10 & 11
album: Beethoven: Piano Sonata No. 30, Op. 109 & Bagatelles, Op. 126
album: Beethoven: Piano Sonatas Nos. 16, 17 & 18, Op. 31
album: Beethoven: Piano Sonatas Nos 27, 28 & 32
album: Beethoven: Piano Sonatas Nos 21 "Waldstein", 24 "À Thérèse" & 31
album: Beethoven: Piano Concertos Nos. 3 & 4
album: Beethoven: Piano Concertos Nos. 1 & 2
album: Schubert: Piano Sonata No. 21 in B-Flat, D. 960
album: Brahms: Klavierstücke, Op. 119; Fantasien, Op. 116; 3 Intermezzi, Op. 117
album: Brahms: 4 Ballades; Scherzo, Op. 4; 8 Piano Pieces
album: Mozart: Piano Concertos Nos. 20 & 23
album: Mozart: Piano Concertos Nos. 21 & 25
album: Grieg & Schumann Piano Concertos
album: Stravinsky: Concerto for Piano and Wind Instruments; Bartók Piano Concerto No. 2
track: Mozart: Piano Concerto No. 21 in C, K.467: 2. Andante
track: Schubert: 6 Moments musicaux, Op. 94, D. 780: No. 3 in F Minor
track: Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
track: Bagatelle
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Debussy: Épigraphes antiques, CD 139, L. 131: No. 2, Pour un tombeau sans nom (Arr. Lenski for Flute and Piano)
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Ravel: 3 Chansons madécasses, M. 78: No. 3, Il est doux de se coucher
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Ravel: 3 Chansons madécasses, M. 78: No. 3, Il est doux de se coucher
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Prokofiev: Flute Sonata in D Major, Op. 94: I. Moderato
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by artist: Emmanuel Pahud
by artist: Stephen Kovacevich
in album: Debussy: Syrinx, Bilitis, La plus que lente - Ravel: Chansons madécasses & Prokofiev: Flute Sonata
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
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Prokofiev: Flute Sonata in D Major, Op. 94: II. Scherzo
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Prokofiev: Flute Sonata in D Major, Op. 94: III. Andante
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Prokofiev: Flute Sonata in D Major, Op. 94: III. Andante
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Prokofiev: Flute Sonata in D Major, Op. 94: IV. Allegro con brio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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"A Selection" - Kovacevich plays Mozart, Beethoven & Chopin
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    date published: 2026-07-06T07:53:57Z
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track: 33 Piano Variations In C, Op. 120 On A Waltz By Anton Diabelli: Variation XII (Un poco più moto)
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track: Andante And Five Variations For Piano Duet In G, K.501: Thema (Andante)
track: Andante And Five Variations For Piano Duet In G, K.501: Variation 1
track: Andante And Five Variations For Piano Duet In G, K.501: Variation 2
track: Andante And Five Variations For Piano Duet In G, K.501: Variation 3
track: Andante And Five Variations For Piano Duet In G, K.501: Variation 4
track: Andante And Five Variations For Piano Duet In G, K.501: Variation 5
track: Mazurka No. 39 in B Op. 63 No. 1
track: 11 Bagatelles, Op. 119: 2. Andante con moto
track: 11 Bagatelles, Op. 119: 5. Risoluto
track: 11 Bagatelles, Op. 119: 6. Andante - Allegretto leggiermente
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Andante And Five Variations For Piano Duet In G, K.501: Variation 1
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Andante And Five Variations For Piano Duet In G, K.501: Variation 2
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Andante And Five Variations For Piano Duet In G, K.501: Variation 3
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Andante And Five Variations For Piano Duet In G, K.501: Variation 4
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Andante And Five Variations For Piano Duet In G, K.501: Variation 5
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Mazurka No. 39 in B Op. 63 No. 1
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11 Bagatelles, Op. 119: 2. Andante con moto
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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
  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 0xd8d5778d5488a8f449485981469e17f6ac93682892ef8057c645c089a3601140. 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/NLA507400662.
  date published: 2026-07-08T03:53:27Z
audio: 11 Bagatelles, Op. 119: 2. Andante con moto
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11 Bagatelles, Op. 119: 5. Risoluto
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duration: PT1M6S
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by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: "A Selection" - Kovacevich plays Mozart, Beethoven & Chopin
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popularity: 0
genre: classical
genre: classical-piano
genre: chamber-music
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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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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: 2026-07-08T03:22:41Z
audio: 11 Bagatelles, Op. 119: 5. Risoluto
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11 Bagatelles, Op. 119: 6. Andante - Allegretto leggiermente
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by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: "A Selection" - Kovacevich plays Mozart, Beethoven & Chopin
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popularity: 0
genre: classical
genre: classical-piano
genre: chamber-music
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93372e16e6df498deeb516090aad355680f0ba663c227b056f7dea65098c84ef. 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/NLA507400666.
  date published: 2026-07-08T03:20:19Z
audio: 11 Bagatelles, Op. 119: 6. Andante - Allegretto leggiermente
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11 Bagatelles, Op. 119: 8. Moderato cantabile
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by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: "A Selection" - Kovacevich plays Mozart, Beethoven & Chopin
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popularity: 0
genre: classical
genre: classical-piano
genre: chamber-music
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: 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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  date published: 2026-07-08T03:20:19Z
audio: 11 Bagatelles, Op. 119: 8. Moderato cantabile
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  additional property: Musical Key
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Bagatelles. Beethoven, Chopin, Schubert, Brahms & Debussy
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  explicit: false
  by artist: Ludwig van Beethoven
  by artist: Stephen Kovacevich
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  genre: 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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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T03:53:27Z
  audio: Beethoven: 11 Bagatelles, Op. 119: No. 2 in C Major, Andante con moto
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    additional property: Mode (Major/Minor)
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track: Schubert: 12 German Dances, Op. Posth. 171, D. 790: No. 1 in D Major
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  genre: classical
  genre: classical-piano
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T08:56:20Z
  audio: Schubert: 12 German Dances, Op. Posth. 171, D. 790: No. 1 in D Major
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  subject of: OpenTimestamps Proof of Existence
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track: Schubert: 12 German Dances, Op. Posth. 171, D. 790: No. 3 in D Major
track: Chopin: Waltz No. 6 in D-Flat Major, Op. 64 No. 1 "Minute"
track: Chopin: Waltz No. 9 in A-Flat Major, Op. Posth. 69 No. 1 "Farewell"
track: Brahms: Variations on a Theme by Handel, Op. 24: Variation V. Espressivo

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OTSHash
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9400958

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 0xe3bb5c6f3bb4419b31fcabf48e1358ff3b830d3136e8680579c8fb6d0f4ecf92. 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/GBAYC9400958.
date published: 2026-07-08T03:22:41Z

Schubert: 12 German Dances, Op. Posth. 171, D. 790: No. 2 in A Major
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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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Schubert: 12 German Dances, Op. Posth. 171, D. 790: No. 3 in D Major
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  date published: 2026-07-08T03:53:27Z
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Beethoven: Piano Sonatas Nos. 8 "Pathétique", 14 "Moonlight", 17 "The Tempest", 21 "Waldstein" & Bagatelles, Op. 126
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Brahms: Waltzes, Op. 39; Rhapsodies, Op. 79; Klavierstücke, Op. 118
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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
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date published: 2026-07-02T05:09:12Z

16 Waltzes, Op. 39: No. 15 in A-Flat Major
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16 Waltzes, Op. 39: No. 16 in C-Sharp Minor
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by artist: Stephen Kovacevich
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: 16 Waltzes, Op. 39: No. 16 in C-Sharp Minor
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6 Piano Pieces, Op. 118: No. 1, Intermezzo in A Minor
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by artist: Stephen Kovacevich
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: 6 Piano Pieces, Op. 118: No. 1, Intermezzo in A Minor
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6 Piano Pieces, Op. 118: No. 2, Intermezzo in A Major
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: 6 Piano Pieces, Op. 118: No. 2, Intermezzo in A Major
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6 Piano Pieces, Op. 118: No. 3, Ballade in G Minor
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: 6 Piano Pieces, Op. 118: No. 3, Ballade in G Minor
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6 Piano Pieces, Op. 118: No. 6, Intermezzo in E-Flat Minor
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T14:57:00Z
audio: 6 Piano Pieces, Op. 118: No. 6, Intermezzo in E-Flat Minor
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Brahms: Piano Concerto No.1; Handel Variations
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Beethoven: Popular Piano Sonatas
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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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Brahms: Piano Concertos
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Bartók, Debussy, Mozart - Music For 2 Pianos
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Beethoven: Diabelli Variations - Bach: Partita No.4
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    date published: 2026-07-02T03:30:09Z
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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: Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
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track: Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
track: Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": II. Allegretto
track: Beethoven: Piano Sonata No. 26 in E-Flat Major, Op. 81a "Les Adieux": II. Abwesenheit. Andante espressivo
track: Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": III. Presto agitato
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track: Beethoven: Piano Sonata No. 29 in B-Flat Major, Op. 106 "Hammerklavier": I. Allegro
track: Beethoven: Piano Sonata No. 29 in B-Flat Major, Op. 106 "Hammerklavier": II. Scherzo. Assai vivace
track: Beethoven: Piano Sonata No. 15 in D Major, Op. 28 "Pastoral": III. Scherzo. Allegro vivace
track: Beethoven: Piano Sonata No. 15 in D Major, Op. 28 "Pastoral": IV. Rondo. Allegro ma non troppo
track: Beethoven: Piano Sonata No. 29 in B-Flat Major, Op. 106 "Hammerklavier": IV. Introduzione. Largo - Fuga. Allegro risoluto
track: Beethoven: Piano Sonata No. 31 in A-Flat Major, Op. 110: III. (a) Adagio ma non troppo - Recitativo più adagio -
track: Beethoven: Piano Sonata No. 31 in A-Flat Major, Op. 110: III. (b) Adagio ma no troppo. Arioso dolente -
track: Beethoven: Piano Sonata No. 31 in A-Flat Major, Op. 110: III. (e) L'istesso tempo della fuga. Poi a poi di nuovo vivente

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OpenTimestamps Proof of Existence
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Beethoven: Piano Sonata No. 17 in D Minor, Op. 31 No. 2 "The Tempest": I. Largo - Allegro
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  value: https://explorer.copyrightchains.com/tx/0x9b9a128b2689c014c2ea72adf2f15966c870e5a7aaf0e04e6b669b255f426738
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/GBAYC9201453
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 0x9b9a128b2689c014c2ea72adf2f15966c870e5a7aaf0e04e6b669b255f426738. 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/GBAYC9201453.
  date published: 2026-07-02T11:34:59Z
audio: Beethoven: Piano Sonata No. 21 in C Major, Op. 53 "Waldstein": III. Rondo. Allegretto moderato - Prestissimo
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  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.275
  additional property: Energy
    type: PropertyValue
    value: 0.119
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.985
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.921
  additional property: Liveness
    type: PropertyValue
    value: 0.079
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.085
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.759
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Beethoven: Piano Sonata No. 17 in D Minor, Op. 31 No. 2 "The Tempest": III. Allegretto
type: MusicRecording
duration: PT6M31S
duration ms: 391120
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Piano Sonatas
  type: MusicAlbum
  date published: 2008-08-04
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC9400866
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-25T07:26:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x81b424481e1e97b17a00037c1d7fb5cfb20b931018f5de72274e43e7774eedf8
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/GBAYC9400866
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 0x81b424481e1e97b17a00037c1d7fb5cfb20b931018f5de72274e43e7774eedf8. 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/GBAYC9400866.
  date published: 2026-07-02T11:34:59Z
audio: Beethoven: Piano Sonata No. 17 in D Minor, Op. 31 No. 2 "The Tempest": III. Allegretto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.351
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.142
  additional property: Energy
    type: PropertyValue
    value: 0.231
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.891
  additional property: Liveness
    type: PropertyValue
    value: 0.094
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.293
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.396
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
type: MusicRecording
duration: PT6M34S
duration ms: 394760
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Piano Sonatas
  type: MusicAlbum
  date published: 2008-08-04
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC9903657
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T05:22:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2bfb0e9558b59083613e67bd113535412d6ef59776bc3f40d3ea693dbe64a55d
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/GBAYC9903657
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 0x2bfb0e9558b59083613e67bd113535412d6ef59776bc3f40d3ea693dbe64a55d. 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/GBAYC9903657.
  date published: 2026-07-02T03:30:09Z
audio: Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 95.661
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.246
  additional property: Energy
    type: PropertyValue
    value: 0.006
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.886
  additional property: Liveness
    type: PropertyValue
    value: 0.085
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.255
  additional property: Loudness (dB)
    type: PropertyValue
    value: -46.161
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": II. Allegretto
type: MusicRecording
duration: PT2M4S
duration ms: 124880
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Piano Sonatas
  type: MusicAlbum
  date published: 2008-08-04
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC9903658
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T05:32:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x56220e3070d9318caa6bc7f6682faa7ee36abe31afaccbf4a19eb2c8f64ccc41
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/GBAYC9903658
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T00:48:12Z
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 0x56220e3070d9318caa6bc7f6682faa7ee36abe31afaccbf4a19eb2c8f64ccc41. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:48:12Z), 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/GBAYC9903658.
  date published: 2026-07-22T00:48:12Z
audio: Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": II. Allegretto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 97.478
  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: 0.403
  additional property: Energy
    type: PropertyValue
    value: 0.038
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.851
  additional property: Liveness
    type: PropertyValue
    value: 0.11
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.229
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.869
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Beethoven: Piano Sonata No. 26 in E-Flat Major, Op. 81a "Les Adieux": II. Abwesenheit. Andante espressivo
type: MusicRecording
duration: PT3M30S
duration ms: 210253
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Piano Sonatas
  type: MusicAlbum
  date published: 2008-08-04
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC0203671
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T05:45:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x052a27a70dc42d0ae0f42e00c9431a651b106b34923a6342ecea8abe05e1231f
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/GBAYC0203671
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 0x052a27a70dc42d0ae0f42e00c9431a651b106b34923a6342ecea8abe05e1231f. 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/GBAYC0203671.
  date published: 2026-07-08T03:53:27Z
audio: Beethoven: Piano Sonata No. 26 in E-Flat Major, Op. 81a "Les Adieux": II. Abwesenheit. Andante espressivo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.045
  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: 0.479
  additional property: Energy
    type: PropertyValue
    value: 0.01
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.905
  additional property: Liveness
    type: PropertyValue
    value: 0.072
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.04
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.866
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": III. Presto agitato
type: MusicRecording
duration: PT7M10S
duration ms: 430373
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Piano Sonatas
  type: MusicAlbum
  date published: 2008-08-04
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC9903659
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T06:02:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0b120f99c31b1aa02aa1d61a334c8807cb99df033eeb54aa096380aa76a7efe6
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/GBAYC9903659
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 0x0b120f99c31b1aa02aa1d61a334c8807cb99df033eeb54aa096380aa76a7efe6. 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/GBAYC9903659.
  date published: 2026-07-02T03:30:09Z
audio: Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": III. Presto agitato
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.166
  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: 0.298
  additional property: Energy
    type: PropertyValue
    value: 0.237
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.977
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.899
  additional property: Liveness
    type: PropertyValue
    value: 0.11
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.071
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.606
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Beethoven: Piano Sonata No. 26 in E-Flat Major, Op. 81a "Les Adieux": III. Das Wiedersehen. Vivacissimamente
type: MusicRecording
duration: PT5M33S
duration ms: 333093
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Piano Sonatas
  type: MusicAlbum
  date published: 2008-08-04
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC0203672
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T09:53:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8fd10b8a17e63c128918ab453453557039f701dc637a8b6368afbd2a9937a686
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/GBAYC0203672
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 0x8fd10b8a17e63c128918ab453453557039f701dc637a8b6368afbd2a9937a686. 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/GBAYC0203672.
  date published: 2026-07-08T03:20:19Z
audio: Beethoven: Piano Sonata No. 26 in E-Flat Major, Op. 81a "Les Adieux": III. Das Wiedersehen. Vivacissimamente
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.5
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.357
  additional property: Energy
    type: PropertyValue
    value: 0.14
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.905
  additional property: Liveness
    type: PropertyValue
    value: 0.094
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.267
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.929
  additional property: Key Name
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Beethoven: Piano Sonata No. 29 in B-Flat Major, Op. 106 "Hammerklavier": I. Allegro
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by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Piano Sonatas
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genre: classical
genre: classical-piano
genre: chamber-music
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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: 2026-07-08T08:56:20Z
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Beethoven: Piano Sonata No. 29 in B-Flat Major, Op. 106 "Hammerklavier": II. Scherzo. Assai vivace
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by artist: Stephen Kovacevich
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genre: classical
genre: classical-piano
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Beethoven: Piano Sonata No. 29 in B-Flat Major, Op. 106 "Hammerklavier": II. Scherzo. Assai vivace
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Beethoven: Piano Sonata No. 15 in D Major, Op. 28 "Pastoral": III. Scherzo. Allegro vivace
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by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Piano Sonatas
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genre: classical
genre: classical-piano
genre: chamber-music
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Beethoven: Piano Sonata No. 15 in D Major, Op. 28 "Pastoral": III. Scherzo. Allegro vivace
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Beethoven: Piano Sonata No. 15 in D Major, Op. 28 "Pastoral": IV. Rondo. Allegro ma non troppo
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duration: PT4M49S
duration ms: 289280
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
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genre: classical
genre: classical-piano
genre: chamber-music
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Beethoven: Piano Sonata No. 15 in D Major, Op. 28 "Pastoral": IV. Rondo. Allegro ma non troppo
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Beethoven: Piano Sonata No. 29 in B-Flat Major, Op. 106 "Hammerklavier": IV. Introduzione. Largo - Fuga. Allegro risoluto
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duration: PT11M27S
duration ms: 687893
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by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Piano Sonatas
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  date published: 2008-08-04
genre: classical
genre: classical-piano
genre: chamber-music
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:39:04Z
audio: Beethoven: Piano Sonata No. 29 in B-Flat Major, Op. 106 "Hammerklavier": IV. Introduzione. Largo - Fuga. Allegro risoluto
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Beethoven: Piano Sonata No. 31 in A-Flat Major, Op. 110: III. (a) Adagio ma non troppo - Recitativo più adagio -
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by artist: Stephen Kovacevich
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genre: classical
genre: classical-piano
genre: chamber-music
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Beethoven: Piano Sonata No. 31 in A-Flat Major, Op. 110: III. (a) Adagio ma non troppo - Recitativo più adagio -
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Beethoven: Piano Sonata No. 31 in A-Flat Major, Op. 110: III. (b) Adagio ma no troppo. Arioso dolente -
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by artist: Stephen Kovacevich
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genre: classical
genre: classical-piano
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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: Beethoven: Piano Sonata No. 31 in A-Flat Major, Op. 110: III. (b) Adagio ma no troppo. Arioso dolente -
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Beethoven: Piano Sonata No. 31 in A-Flat Major, Op. 110: III. (e) L'istesso tempo della fuga. Poi a poi di nuovo vivente
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Beethoven: Piano Concerto No.5 - "Emperor"; Piano Concerto No.4
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Stephen Kovacevich plays Beethoven
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track: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": 1. Grave - Allegro di molto e con brio
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Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": 3. Rondo. Allegro
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Beethoven: Bagatelles, Op. 119, Piano Sonatas Nos. 26 "Les Adieux" & 29 "Hammerklavier"
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Beethoven: Complete Piano Sonatas
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609a6c310d7e3b38f89041af714d98095085c4f61c082ea516b46a8daed9921e. 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/GBAYC0302175.
    date published: 2026-07-08T03:22:41Z
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  by artist: Stephen Kovacevich
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  genre: classical
  genre: classical-piano
  genre: chamber-music
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  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/GBAYC0302176
  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 0x79fb09f02d857e1564d18dd67647e35434b3456fb04303a8ba359530af46de6e. 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/GBAYC0302176.
    date published: 2026-07-08T03:22:41Z
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track: Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: III. Menuetto. Allegretto
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  by artist: Stephen Kovacevich
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    date published: 2003-08-10
  genre: classical
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  additional property: CopyrightID
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: III. Menuetto. Allegretto
track: Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: IV. Prestissimo
track: Beethoven: Piano Sonata No. 2 in A Major, Op. 2 No. 2: I. Allegro vivace
track: Beethoven: Piano Sonata No. 2 in A Major, Op. 2 No. 2: II. Largo appassionato
track: Beethoven: Piano Sonata No. 3 in C Major, Op. 2 No. 3: I. Allegro con brio
track: Beethoven: Piano Sonata No. 3 in C Major, Op. 2 No. 3: II. Adagio
track: Beethoven: Piano Sonata No. 3 in C Major, Op. 2 No. 3: III. Scherzo. Allegro
track: Beethoven: Piano Sonata No. 3 in C Major, Op. 2 No. 3: IV. Allegro assai
track: Beethoven: Piano Sonata No. 4 in E-Flat Major, Op. 7: I. Allegro molto e con brio
track: Beethoven: Piano Sonata No. 4 in E-Flat Major, Op. 7: IV. Rondo. Poco allegretto e grazioso
track: Beethoven: Piano Sonata No. 6 in F Major, Op. 10 No. 2: I. Allegro
track: Beethoven: Piano Sonata No. 6 in F Major, Op. 10 No. 2: II. Allegretto
track: Beethoven: Piano Sonata No. 7 in D Major, Op. 10 No. 3: I. Presto
track: Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": I. Grave - Allegro di molto e con brio
track: Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
track: Beethoven: Piano Sonata No. 9 in E Major, Op. 14 No. 1: III. Rondo. Allegro comodo
track: Beethoven: Piano Sonata No. 11 in B-Flat Major, Op. 22: II. Adagio con molto espressione
track: Beethoven: Piano Sonata No. 12 in A-Flat Major, Op. 26: III. Marcia funebre sulla morte d'un eroe. Maestoso andante
track: Beethoven: Piano Sonata No. 13 in E-Flat Major, Op. 27 No. 1: I. Andante

CopyrightChainExplorerURL
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
type: PropertyValue
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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 0xb8deb0958d2aec765980210d991e786becfd45b109829b4c105e1a32f36de94e. 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/GBAYC0302177.
date published: 2026-07-08T03:53:27Z

Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: III. Menuetto. Allegretto
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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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Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: IV. Prestissimo
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duration: PT4M44S
duration ms: 284906
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Complete Piano Sonatas
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  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC0302178
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0302178
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214c40970147fd6f9ecfe61d11177ecd90ba0e7e50ada5c4664fa308d39e3cdd. 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/GBAYC0302178.
  date published: 2026-07-08T03:53:27Z
audio: Beethoven: Piano Sonata No. 1 in F Minor, Op. 2 No. 1: IV. Prestissimo
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  additional property: Key Name
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Beethoven: Piano Sonata No. 2 in A Major, Op. 2 No. 2: I. Allegro vivace
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duration: PT6M52S
duration ms: 412426
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC0302180
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/GBAYC0302180
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 0x2f4bc7fbb0189439c0ed9ff72baaa97792bf4945e0684ec247f2a715fa95dcf1. 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/GBAYC0302180.
  date published: 2026-07-08T03:53:27Z
audio: Beethoven: Piano Sonata No. 2 in A Major, Op. 2 No. 2: I. Allegro vivace
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Beethoven: Piano Sonata No. 2 in A Major, Op. 2 No. 2: II. Largo appassionato
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duration ms: 335013
explicit: false
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by artist: Stephen Kovacevich
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genre: classical
genre: classical-piano
genre: chamber-music
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc142617e465944bb5b1450fb39f16041a98a04665999ecc81e43b84a8a8fb86b. 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/GBAYC0302181.
  date published: 2026-07-08T08:56:20Z
audio: Beethoven: Piano Sonata No. 2 in A Major, Op. 2 No. 2: II. Largo appassionato
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Beethoven: Piano Sonata No. 3 in C Major, Op. 2 No. 3: I. Allegro con brio
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by artist: Stephen Kovacevich
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  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f7ba39b69c95fc729f5e7ecfc57657d36c63096c3c2eb98dee7012520f3b54. 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/GBAYC0203960.
  date published: 2026-07-08T03:53:27Z
audio: Beethoven: Piano Sonata No. 3 in C Major, Op. 2 No. 3: I. Allegro con brio
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  additional property: Tempo (BPM)
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    value: 103.488
  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.399
  additional property: Energy
    type: PropertyValue
    value: 0.1
  additional property: Speechiness
    type: PropertyValue
    value: 0.05
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.899
  additional property: Liveness
    type: PropertyValue
    value: 0.086
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.226
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.661
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
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Beethoven: Piano Sonata No. 3 in C Major, Op. 2 No. 3: II. Adagio
type: MusicRecording
duration: PT6M18S
duration ms: 378440
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC0203961
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T20:12:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x79358550f35e621e3ca75485c50f4789fe3735522c80e9f023d5c8b5fe6df4c6
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/GBAYC0203961
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 0x79358550f35e621e3ca75485c50f4789fe3735522c80e9f023d5c8b5fe6df4c6. 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/GBAYC0203961.
  date published: 2026-07-08T08:56:20Z
audio: Beethoven: Piano Sonata No. 3 in C Major, Op. 2 No. 3: II. Adagio
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
    value: 0.351
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
    value: 0.053
  additional property: Acousticness
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    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.89
  additional property: Liveness
    type: PropertyValue
    value: 0.091
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.095
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.606
  additional property: Key Name
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  additional property: Mode Name
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Beethoven: Piano Sonata No. 3 in C Major, Op. 2 No. 3: III. Scherzo. Allegro
type: MusicRecording
duration: PT3M16S
duration ms: 196213
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC0203962
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T17:14:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x140308741676bcd7540c70497618513bc9831c5c67b87008297f8d4112bd03ed
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/GBAYC0203962
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 0x140308741676bcd7540c70497618513bc9831c5c67b87008297f8d4112bd03ed. 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/GBAYC0203962.
  date published: 2026-07-08T03:53:27Z
audio: Beethoven: Piano Sonata No. 3 in C Major, Op. 2 No. 3: III. Scherzo. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.75
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.426
  additional property: Energy
    type: PropertyValue
    value: 0.1
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.811
  additional property: Liveness
    type: PropertyValue
    value: 0.092
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.553
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.418
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Beethoven: Piano Sonata No. 3 in C Major, Op. 2 No. 3: IV. Allegro assai
type: MusicRecording
duration: PT5M4S
duration ms: 304706
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC0203963
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T15:17:15+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcbc0ae1ef9d6e3f68a3d351eb018e143361af68c613167c9e8f563056aaa6ba7
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/GBAYC0203963
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 0xcbc0ae1ef9d6e3f68a3d351eb018e143361af68c613167c9e8f563056aaa6ba7. 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/GBAYC0203963.
  date published: 2026-07-08T08:56:20Z
audio: Beethoven: Piano Sonata No. 3 in C Major, Op. 2 No. 3: IV. Allegro assai
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 136.877
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.432
  additional property: Energy
    type: PropertyValue
    value: 0.136
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.933
  additional property: Liveness
    type: PropertyValue
    value: 0.078
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.513
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.587
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Beethoven: Piano Sonata No. 4 in E-Flat Major, Op. 7: I. Allegro molto e con brio
type: MusicRecording
duration: PT8M12S
duration ms: 492733
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC9903446
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T08:21:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0f0a8b2fbd98708e38ddd0eeac90b9c81ab5912962f572c1a26abcda87c1846a
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/GBAYC9903446
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 0x0f0a8b2fbd98708e38ddd0eeac90b9c81ab5912962f572c1a26abcda87c1846a. 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/GBAYC9903446.
  date published: 2026-07-08T03:53:27Z
audio: Beethoven: Piano Sonata No. 4 in E-Flat Major, Op. 7: I. Allegro molto e con brio
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 92.224
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.236
  additional property: Energy
    type: PropertyValue
    value: 0.137
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.86
  additional property: Liveness
    type: PropertyValue
    value: 0.109
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.239
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.474
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Beethoven: Piano Sonata No. 4 in E-Flat Major, Op. 7: IV. Rondo. Poco allegretto e grazioso
type: MusicRecording
duration: PT6M31S
duration ms: 391560
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC9903449
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T16:04:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x939c04050ff8b1c5eabc21ade794fdfcc2928c178971fef6c51611e4c76bf27f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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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/GBAYC9903449
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 0x939c04050ff8b1c5eabc21ade794fdfcc2928c178971fef6c51611e4c76bf27f. 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/GBAYC9903449.
  date published: 2026-07-08T03:22:41Z
audio: Beethoven: Piano Sonata No. 4 in E-Flat Major, Op. 7: IV. Rondo. Poco allegretto e grazioso
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 95.47
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.389
  additional property: Energy
    type: PropertyValue
    value: 0.084
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.893
  additional property: Liveness
    type: PropertyValue
    value: 0.081
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.232
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.021
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Beethoven: Piano Sonata No. 6 in F Major, Op. 10 No. 2: I. Allegro
type: MusicRecording
duration: PT5M42S
duration ms: 342200
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC9802751
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T16:02:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa9a8621f8305d748a85dec44d7810b53ca17b07be49d7eed126f60abf8fc84a7
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/GBAYC9802751
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 0xa9a8621f8305d748a85dec44d7810b53ca17b07be49d7eed126f60abf8fc84a7. 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/GBAYC9802751.
  date published: 2026-07-08T03:53:27Z
audio: Beethoven: Piano Sonata No. 6 in F Major, Op. 10 No. 2: I. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 116.778
  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: 0.412
  additional property: Energy
    type: PropertyValue
    value: 0.083
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.984
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.92
  additional property: Liveness
    type: PropertyValue
    value: 0.059
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.263
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.813
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Beethoven: Piano Sonata No. 6 in F Major, Op. 10 No. 2: II. Allegretto
type: MusicRecording
duration: PT3M13S
duration ms: 193800
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC9802752
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T12:23:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa885bd13288a60744316310b74275e63d35a471117e775442d4814397d726839
additional property: OTSHash
additional property: OTSBitcoinBlock
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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/GBAYC9802752
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 0xa885bd13288a60744316310b74275e63d35a471117e775442d4814397d726839. 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/GBAYC9802752.
  date published: 2026-07-08T03:53:27Z
audio: Beethoven: Piano Sonata No. 6 in F Major, Op. 10 No. 2: II. Allegretto
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  additional property: Acousticness
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    value: 0.994
  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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Beethoven: Piano Sonata No. 7 in D Major, Op. 10 No. 3: I. Presto
type: MusicRecording
duration: PT6M48S
duration ms: 408426
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC9802755
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
  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/GBAYC9802755
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 0xa219dcb5c0962acf3ded1174f65f842f22c28ebbb43e2bf21841def618e2bd19. 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/GBAYC9802755.
  date published: 2026-07-08T03:53:27Z
audio: Beethoven: Piano Sonata No. 7 in D Major, Op. 10 No. 3: I. Presto
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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
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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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Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": I. Grave - Allegro di molto e con brio
type: MusicRecording
duration: PT8M47S
duration ms: 527920
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC9701013
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x2bdcf2a0489895d88361cf44fd120f0e782e4935bc681736a9dbba5ca787a178
additional property: OTSHash
additional property: OTSBitcoinBlock
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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/GBAYC9701013
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 0x2bdcf2a0489895d88361cf44fd120f0e782e4935bc681736a9dbba5ca787a178. 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/GBAYC9701013.
  date published: 2026-07-08T03:22:41Z
audio: Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": I. Grave - Allegro di molto e con brio
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
    value: 0.422
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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    value: -26.904
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
type: MusicRecording
duration: PT5M33S
duration ms: 333933
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC9701014
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T13:15:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0de585469fddaf1a82a6d2ace36cf46137bd327ea247e5e0ee396910beee5e40
additional property: OTSHash
additional property: OTSBitcoinBlock
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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/GBAYC9701014
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de585469fddaf1a82a6d2ace36cf46137bd327ea247e5e0ee396910beee5e40. 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/GBAYC9701014.
  date published: 2026-07-02T03:55:08Z
audio: Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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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
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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
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
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  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Beethoven: Piano Sonata No. 9 in E Major, Op. 14 No. 1: III. Rondo. Allegro comodo
type: MusicRecording
duration: PT3M11S
duration ms: 191040
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC9701019
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T20:45:40+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8c41b19bddaf641f942634c40455673b601fcfd508e2610bde69864405bd76fa
additional property: OTSHash
additional property: OTSBitcoinBlock
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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/GBAYC9701019
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 0x8c41b19bddaf641f942634c40455673b601fcfd508e2610bde69864405bd76fa. 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/GBAYC9701019.
  date published: 2026-07-08T03:53:27Z
audio: Beethoven: Piano Sonata No. 9 in E Major, Op. 14 No. 1: III. Rondo. Allegro comodo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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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
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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
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Mode Name
    type: PropertyValue
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Beethoven: Piano Sonata No. 11 in B-Flat Major, Op. 22: II. Adagio con molto espressione
type: MusicRecording
duration: PT7M13S
duration ms: 433306
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC9701026
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T11:35:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb4e381f634a3c4f0043d5235ea675fbd4403a9b0e3257276ef372b823a8086f0
additional property: OTSHash
additional property: OTSBitcoinBlock
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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/GBAYC9701026
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 0xb4e381f634a3c4f0043d5235ea675fbd4403a9b0e3257276ef372b823a8086f0. 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/GBAYC9701026.
  date published: 2026-07-08T08:56:20Z
audio: Beethoven: Piano Sonata No. 11 in B-Flat Major, Op. 22: II. Adagio con molto espressione
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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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)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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Beethoven: Piano Sonata No. 12 in A-Flat Major, Op. 26: III. Marcia funebre sulla morte d'un eroe. Maestoso andante
type: MusicRecording
duration: PT5M44S
duration ms: 344333
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC9903649
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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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
  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 0x648dc43004341fe39c417b0175afc498a895a6ddc2bb2bd85cb02ae9f5ba0cea. 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/GBAYC9903649.
  date published: 2026-07-08T08:56:20Z
audio: Beethoven: Piano Sonata No. 12 in A-Flat Major, Op. 26: III. Marcia funebre sulla morte d'un eroe. Maestoso andante
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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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
    type: PropertyValue
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  additional property: Liveness
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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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  additional property: Mode Name
    type: PropertyValue
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Beethoven: Piano Sonata No. 13 in E-Flat Major, Op. 27 No. 1: I. Andante
type: MusicRecording
duration: PT4M57S
duration ms: 297093
explicit: false
by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Beethoven: Complete Piano Sonatas
  type: MusicAlbum
  date published: 2003-08-10
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: GBAYC9903652
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T18:10:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc403444dcb79cb890cff68710dc17a4dd36d27324b53a70192aa40b0390c85eb
additional property: OTSHash
additional property: OTSBitcoinBlock
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  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/GBAYC9903652
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 0xc403444dcb79cb890cff68710dc17a4dd36d27324b53a70192aa40b0390c85eb. 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/GBAYC9903652.
  date published: 2026-07-08T08:56:20Z
audio: Beethoven: Piano Sonata No. 13 in E-Flat Major, Op. 27 No. 1: I. Andante
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 95.627
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
    value: 0.243
  additional property: Energy
    type: PropertyValue
    value: 0.027
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.865
  additional property: Liveness
    type: PropertyValue
    value: 0.058
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.126
  additional property: Loudness (dB)
    type: PropertyValue
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Beethoven: Piano Sonatas Nos. 12, 13, 14 "Moonlight", 19 & 20
type: MusicAlbum
date published: 2001-01-01
track: Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
  type: MusicRecording
  duration: PT6M34S
  duration ms: 394760
  explicit: false
  by artist: Ludwig van Beethoven
  by artist: Stephen Kovacevich
  in album: Beethoven: Piano Sonatas Nos. 12, 13, 14 "Moonlight", 19 & 20
    type: MusicAlbum
    date published: 2001-01-01
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: GBAYC9903657
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-10T05:22:01+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2bfb0e9558b59083613e67bd113535412d6ef59776bc3f40d3ea693dbe64a55d
  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/GBAYC9903657
  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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfb0e9558b59083613e67bd113535412d6ef59776bc3f40d3ea693dbe64a55d. 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/GBAYC9903657.
    date published: 2026-06-13T15:41:10Z
  audio: Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 95.661
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.246
    additional property: Energy
      type: PropertyValue
      value: 0.006
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.995
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.886
    additional property: Liveness
      type: PropertyValue
      value: 0.085
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.255
    additional property: Loudness (dB)
      type: PropertyValue
      value: -46.161
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": II. Allegretto
  type: MusicRecording
  duration: PT2M4S
  duration ms: 124880
  explicit: false
  by artist: Ludwig van Beethoven
  by artist: Stephen Kovacevich
  in album: Beethoven: Piano Sonatas Nos. 12, 13, 14 "Moonlight", 19 & 20
    type: MusicAlbum
    date published: 2001-01-01
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: GBAYC9903658
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T05:32:24+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x56220e3070d9318caa6bc7f6682faa7ee36abe31afaccbf4a19eb2c8f64ccc41
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  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/GBAYC9903658
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T07:16:32Z
  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 0x56220e3070d9318caa6bc7f6682faa7ee36abe31afaccbf4a19eb2c8f64ccc41. 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/GBAYC9903658.
    date published: 2026-07-06T07:16:32Z
  audio: Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": II. Allegretto
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 97.478
    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: 0.403
    additional property: Energy
      type: PropertyValue
      value: 0.038
    additional property: Speechiness
      type: PropertyValue
      value: 0.045
    additional property: Acousticness
      type: PropertyValue
      value: 0.994
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.851
    additional property: Liveness
      type: PropertyValue
      value: 0.11
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.229
    additional property: Loudness (dB)
      type: PropertyValue
      value: -31.869
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": III. Presto agitato
  type: MusicRecording
  duration: PT7M10S
  duration ms: 430373
  explicit: false
  by artist: Ludwig van Beethoven
  by artist: Stephen Kovacevich
  in album: Beethoven: Piano Sonatas Nos. 12, 13, 14 "Moonlight", 19 & 20
    type: MusicAlbum
    date published: 2001-01-01
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: GBAYC9903659
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-21T06:02:52+00:00
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": III. Presto agitato

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x0b120f99c31b1aa02aa1d61a334c8807cb99df033eeb54aa096380aa76a7efe6

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 956312

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956312

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9903659

OTSTimestamp
type: PropertyValue
value: 2026-07-02T05:09:12Z

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 0x0b120f99c31b1aa02aa1d61a334c8807cb99df033eeb54aa096380aa76a7efe6. 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/GBAYC9903659.
date published: 2026-07-02T05:09:12Z

Beethoven: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": III. Presto agitato
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 105.166
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: 0.298
additional property: Energy
  type: PropertyValue
  value: 0.237
additional property: Speechiness
  type: PropertyValue
  value: 0.037
additional property: Acousticness
  type: PropertyValue
  value: 0.977
additional property: Instrumentalness
  type: PropertyValue
  value: 0.899
additional property: Liveness
  type: PropertyValue
  value: 0.11
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.071
additional property: Loudness (dB)
  type: PropertyValue
  value: -24.606
additional property: Key Name
  type: PropertyValue
  value: F#
additional property: Mode Name
  type: PropertyValue
  value: Minor

Beethoven: Piano Sonatas Nos. 4, 22, 23 "Appassionata" & 25
type: MusicAlbum
date published: 2000-01-01
track: Beethoven: Piano Sonata No. 25 in G Major, Op. 79: II. Andante
  type: MusicRecording
  duration: PT2M10S
  duration ms: 130266
  explicit: false
  by artist: Ludwig van Beethoven
  by artist: Stephen Kovacevich
  in album: Beethoven: Piano Sonatas Nos. 4, 22, 23 "Appassionata" & 25
    type: MusicAlbum
    date published: 2000-01-01
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: GBAYC9903443
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T19:40:06+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5492a2e2ca74a6b222956b3f742420297491aebb0fc0dd428b3ee05f79002d5e
  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/GBAYC9903443
  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 0x5492a2e2ca74a6b222956b3f742420297491aebb0fc0dd428b3ee05f79002d5e. 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/GBAYC9903443.
    date published: 2026-07-08T03:22:41Z
  audio: Beethoven: Piano Sonata No. 25 in G Major, Op. 79: II. Andante
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 105.517
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.278
    additional property: Energy
      type: PropertyValue
      value: 0.009
    additional property: Speechiness
      type: PropertyValue
      value: 0.048
    additional property: Acousticness
      type: PropertyValue
      value: 0.995
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.916
    additional property: Liveness
      type: PropertyValue
      value: 0.13
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.103
    additional property: Loudness (dB)
      type: PropertyValue
      value: -37.281
    additional property: Key Name
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    additional property: Mode Name
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Beethoven: Piano Sonatas Nos. 5, 6, 7 & 15 "Pastoral"
type: MusicAlbum
date published: 1999-01-01
track: Beethoven: Piano Sonata No. 6 in F Major, Op. 10 No. 2: II. Allegretto
  type: MusicRecording
  duration: PT3M13S
  duration ms: 193800
  explicit: false
  by artist: Ludwig van Beethoven
  by artist: Stephen Kovacevich
  in album: Beethoven: Piano Sonatas Nos. 5, 6, 7 & 15 "Pastoral"
    type: MusicAlbum
    date published: 1999-01-01
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: GBAYC9802752
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T12:23:09+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa885bd13288a60744316310b74275e63d35a471117e775442d4814397d726839
  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/GBAYC9802752
  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 0xa885bd13288a60744316310b74275e63d35a471117e775442d4814397d726839. 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/GBAYC9802752.
    date published: 2026-07-08T08:56:20Z
  audio: Beethoven: Piano Sonata No. 6 in F Major, Op. 10 No. 2: II. Allegretto
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 99.378
    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: 0.279
    additional property: Energy
      type: PropertyValue
      value: 0.035
    additional property: Speechiness
      type: PropertyValue
      value: 0.048
    additional property: Acousticness
      type: PropertyValue
      value: 0.994
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.904
    additional property: Liveness
      type: PropertyValue
      value: 0.081
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.062
    additional property: Loudness (dB)
      type: PropertyValue
      value: -34.096
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Beethoven: Piano Sonata No. 15 in D Major, Op. 28 "Pastoral": IV. Rondo. Allegro ma non troppo
  type: MusicRecording
  duration: PT4M49S
  duration ms: 289280
  explicit: false
  by artist: Ludwig van Beethoven
  by artist: Stephen Kovacevich
  in album: Beethoven: Piano Sonatas Nos. 5, 6, 7 & 15 "Pastoral"
    type: MusicAlbum
    date published: 1999-01-01
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: GBAYC9802763
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T08:40:51+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xfcc6705e24fe29de10b5c59f064e3fda7c384df5b24aaa5a82b48dad331cba3b
  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/GBAYC9802763
  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
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    date published: 2026-07-08T03:22:41Z
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Dvorák: The Complete String Quintets
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:39:04Z
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Brahms: Klavierkonzert Nr.2, Op.83 - Klavierstücke, Op.76
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Beethoven: Piano Sonatas Nos. 8 "Pathétique", 9, 10 & 11
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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: Beethoven: Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": III. Rondo. Allegro
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
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  subject of: OpenTimestamps Proof of Existence
  audio: Beethoven: Piano Sonata No. 9 in E Major, Op. 14 No. 1: III. Rondo. Allegro comodo
track: Beethoven: Piano Sonata No. 10 in G Major, Op. 14 No. 2: II. Andante
track: Beethoven: Piano Sonata No. 11 in B-Flat Major, Op. 22: II. Adagio con molto espressione

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

Beethoven: Piano Sonata No. 9 in E Major, Op. 14 No. 1: III. Rondo. Allegro comodo
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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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  date published: 2026-07-08T03:20:19Z
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Beethoven: Piano Sonata No. 11 in B-Flat Major, Op. 22: II. Adagio con molto espressione
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by artist: Stephen Kovacevich
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genre: classical
genre: classical-piano
genre: chamber-music
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
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Beethoven: Piano Sonata No. 30, Op. 109 & Bagatelles, Op. 126
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track: Beethoven: 6 Bagatelles, Op. 126: No. 5 in G Major, Quasi allegretto
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:30:09Z
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Beethoven: Piano Sonatas Nos. 16, 17 & 18, Op. 31
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T08:56:20Z
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Beethoven: Piano Sonatas Nos 27, 28 & 32
type: MusicAlbum
date published: 1992-01-01

Beethoven: Piano Sonatas Nos 21 "Waldstein", 24 "À Thérèse" & 31
type: MusicAlbum
date published: 1992-01-01

Beethoven: Piano Concertos Nos. 3 & 4
type: MusicAlbum
date published: 1989-01-01

Beethoven: Piano Concertos Nos. 1 & 2
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date published: 1989-01-01
track: Piano Concerto No. 1 in C Major, Op. 15: I. Allegro con brio
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T08:56:20Z
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Schubert: Piano Sonata No. 21 in B-Flat, D. 960
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date published: 1986-12-01

Brahms: Klavierstücke, Op. 119; Fantasien, Op. 116; 3 Intermezzi, Op. 117
type: MusicAlbum
date published: 1985-01-01

Brahms: 4 Ballades; Scherzo, Op. 4; 8 Piano Pieces
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track: Scherzo in E-Flat Minor, Op. 4
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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Mozart: Piano Concertos Nos. 20 & 23
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track: Piano Concerto No. 23 in A Major, K. 488: II. Andante
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
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Mozart: Piano Concertos Nos. 21 & 25
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Grieg & Schumann Piano Concertos
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Stravinsky: Concerto for Piano and Wind Instruments; Bartók Piano Concerto No. 2
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Mozart: Piano Concerto No. 21 in C, K.467: 2. Andante
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Bagatelle
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audio: Bagatelle
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Piano Sonata No. 8 in C Minor, Op. 13 'Pathétique': II. Adagio cantabile
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by artist: Ludwig van Beethoven
by artist: Stephen Kovacevich
in album: Moonlight Sonata - Classical Sleep
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  date published: 2016-10-19
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genre: classical
genre: classical-piano
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