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  track: Reveille, concert study for violin with piano accompaniment
  track: Suite for Violin and Piano, Op. 6: Introduction
  track: Suite for Violin and Piano, Op. 6: II. Moto perpetuo
  track: Two Pieces for violin, viola and piano: II. Allegro con molto moto
  track: Suite for Violin and Piano, Op. 6: I. March
  track: Suite for Violin and Piano, Op. 6: III. Lullaby
  track: Suite for Violin and Piano, Op. 6: IV. Waltz
  track: Two Pieces for violin, viola and piano: I. Un poco andante
album: Young & Foolish: Mozart & C.P.E. Bach
track: Piano Quartet in E-Flat Major, Op. 47: I. Sostenuto assai - Allegro ma non troppo
track: Piano Quartet in E-Flat Major, Op. 47: II. Scherzo. Molto vivace
track: Piano Quartet in E-Flat Major, Op. 47: III. Andante cantabile

Reveille, concert study for violin with piano accompaniment
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Suite for Violin and Piano, Op. 6: Introduction
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Suite for Violin and Piano, Op. 6: II. Moto perpetuo
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Two Pieces for violin, viola and piano: II. Allegro con molto moto
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f066280a9ce7a9ff5600731c182c098221037109ad1b0b6b627020c5974448. 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/FR7JM2203110.
  date published: 2026-07-08T03:53:27Z
audio: Two Pieces for violin, viola and piano: II. Allegro con molto moto
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Suite for Violin and Piano, Op. 6: I. March
type: MusicRecording
duration: PT2M24S
duration ms: 144573
explicit: false
by artist: Benjamin Britten
by artist: Isabelle Faust
by artist: Alexander Melnikov
by artist: Boris Faust
in album: Britten: Violin Concerto, Chamber Works
  type: MusicAlbum
  date published: 2024-04-12
popularity: 3
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337e4ebde5c36b9b2438e7b6ca2306b9213aa229b2d2568a786dfc5a3f04b74a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM2203060.
  date published: 2026-07-29T19:35:34Z
audio: Suite for Violin and Piano, Op. 6: I. March
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isrc code: FR7JM2203060
additional property: CopyrightID
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Suite for Violin and Piano, Op. 6: III. Lullaby
type: MusicRecording
duration: PT4M14S
duration ms: 254520
explicit: false
by artist: Benjamin Britten
by artist: Isabelle Faust
by artist: Alexander Melnikov
by artist: Boris Faust
in album: Britten: Violin Concerto, Chamber Works
  type: MusicAlbum
  date published: 2024-04-12
popularity: 3
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e37bf9e13f4eecf06a123884d168b1edbb4c0131776b48a56c56096d2c6376. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM2203080.
  date published: 2026-07-29T19:35:34Z
audio: Suite for Violin and Piano, Op. 6: III. Lullaby
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Suite for Violin and Piano, Op. 6: IV. Waltz
type: MusicRecording
duration: PT5M18S
duration ms: 318786
explicit: false
by artist: Benjamin Britten
by artist: Isabelle Faust
by artist: Alexander Melnikov
by artist: Boris Faust
in album: Britten: Violin Concerto, Chamber Works
  type: MusicAlbum
  date published: 2024-04-12
popularity: 3
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94f00abf0ec7c24e6f6417bed7f563f85ebbe5511516e46a8273a7bf42a52f4. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM2203090.
  date published: 2026-07-30T08:30:10Z
audio: Suite for Violin and Piano, Op. 6: IV. Waltz
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additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Two Pieces for violin, viola and piano: I. Un poco andante
type: MusicRecording
duration: PT6M29S
duration ms: 389360
explicit: false
by artist: Benjamin Britten
by artist: Isabelle Faust
by artist: Alexander Melnikov
by artist: Boris Faust
in album: Britten: Violin Concerto, Chamber Works
  type: MusicAlbum
  date published: 2024-04-12
popularity: 2
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df335e424370d1d6bb3034cb7316b05cab0b99e1d4600b72d2497b215d49192. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM2203100.
  date published: 2026-07-30T08:30:10Z
audio: Two Pieces for violin, viola and piano: I. Un poco andante
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additional property: CopyrightID
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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Concerto for Harpsichord and Fortepiano in E-Flat Major, H. 479: III. Presto
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duration: PT4M16S
duration ms: 256640
explicit: false
by artist: Carl Philipp Emanuel Bach
by artist: Café Zimmermann
by artist: Pablo Valetti
by artist: Céline Frisch
by artist: Alexander Melnikov
in album: Young & Foolish: Mozart & C.P.E. Bach
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  date published: 2024-06-21
popularity: 14
isrc code: FR50X2304306
additional property: CopyrightID
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Concerto for Harpsichord and Fortepiano in E-Flat Major, H. 479: III. Presto
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Piano Concerto No. 17 in G Major, K. 453: III. Allegretto
type: MusicRecording
duration: PT7M33S
duration ms: 453853
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Café Zimmermann
by artist: Pablo Valetti
by artist: Alexander Melnikov
in album: Young & Foolish: Mozart & C.P.E. Bach
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popularity: 3
genre: classical
genre: classical-era
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Piano Concerto No. 17 in G Major, K. 453: III. Allegretto
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Concerto for Harpsichord and Fortepiano in E-Flat Major, H. 479: I. Allegro di molto
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Concerto for Harpsichord and Fortepiano in E-Flat Major, H. 479: II. Larghetto
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Piano Concerto No. 17 in G Major, K. 453: I. Allegro
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Piano Concerto No. 17 in G Major, K. 453: II. Andante
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Piano Quartet in E-Flat Major, Op. 47: I. Sostenuto assai - Allegro ma non troppo
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Piano Quartet in E-Flat Major, Op. 47: II. Scherzo. Molto vivace
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Piano Quartet in E-Flat Major, Op. 47: III. Andante cantabile
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additional property: TokenDeploymentConfirmed
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  date published: 2026-07-02T03:55:08Z
audio: Piano Quartet in E-Flat Major, Op. 47: III. Andante cantabile
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efc524f43be207b7e441393d08a534865bcdcc12818165e3eb83e7ec9d003cf. 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/FR50X2304302.
    date published: 2026-07-08T03:53:27Z
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track: Symphony in D Major, H. 663: III. Presto
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  by artist: Café Zimmermann
  by artist: Pablo Valetti
  in album: Young & Foolish: Mozart & C.P.E. Bach
    type: MusicAlbum
    date published: 2024-06-21
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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 0x241de0622ed928aba989213f7e9d553b86a25c427ba9773fcefc63f66cc7b6f6. 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/FR50X2304303.
    date published: 2026-07-02T03:55:08Z
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track: Concerto for Harpsichord and Fortepiano in E-Flat Major, H. 479: III. Presto
track: Divertimento in F Major, K. 138: III. Presto
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  by artist: Pablo Valetti
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  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Divertimento in F Major, K. 138: III. Presto
track: Piano Concerto No. 17 in G Major, K. 453: III. Allegretto
track: Concerto for Harpsichord and Fortepiano in E-Flat Major, H. 479: I. Allegro di molto
track: Concerto for Harpsichord and Fortepiano in E-Flat Major, H. 479: II. Larghetto
track: Piano Concerto No. 17 in G Major, K. 453: I. Allegro
track: Piano Concerto No. 17 in G Major, K. 453: II. Andante

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea4718ec273d03fb03493f4ded13c846ad235db5294bed8ded00e6654cd8db1. 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/FR50X2304309.
date published: 2026-07-08T03:22:41Z

Divertimento in F Major, K. 138: III. Presto
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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