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album: A Guided Tour of the Romantic Era, Vol. 13
album: Charming Cello
album: Myaskovsky & Kabalevsky: Cello Sonatas
album: Fauré, G.: Music for Cello and Piano
album: Wine & Music: A Classical Cocktail
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subject of: OpenTimestamps Proof of Existence
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A Guided Tour of the Romantic Era, Vol. 13
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Charming Cello
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  additional property: OTSVerifyInstructions
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    date published: 2026-07-31T17:29:52Z
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  by artist: Ina-Esther Joost Ben-Sasson
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:30:09Z
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Wine & Music: A Classical Cocktail
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  by artist: Jenő Jandó
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-31T22:27:44Z
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track: Nocturne No. 16 in E-Flat Major, Op. 55, No. 2
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-30T15:42:38Z
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track: Oboe Concerto in C Major, Op. 7, No. 12: II. Adagio
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  by artist: London Virtuosi
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  subject of: OpenTimestamps Proof of Existence
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track: Symphony in C Minor, EG 119: II. Adagio espressivo
track: Sicilienne, Op. 78
track: 2 Arabesques: Arabesque No. 2
track: Suite No. 1, Op. 13: III. Nocturne
track: Gnossienne No.1: 3 Gnossiennes: Gnossienne No. 1

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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bc3aa04384f16d0ceb9a019dde5d73b313f8a378b6cb3a923f6e37adcd4c94. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199202905 — a six-check JSON result.
date published: 2026-07-31T20:22:46Z

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Symphony in C Minor, EG 119: II. Adagio espressivo
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duration ms: 440133
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by artist: Malmö Symphony Orchestra
by artist: Bjarte Engeset
in album: Wine & Music: A Classical Cocktail
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genre: classical
genre: classical-piano
genre: late-romantic-era
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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
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Sicilienne, Op. 78
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by artist: Ina-Esther Joost Ben-Sasson
by artist: Allan Sternfield
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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
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2 Arabesques: Arabesque No. 2
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Suite No. 1, Op. 13: III. Nocturne
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Gnossienne No.1: 3 Gnossiennes: Gnossienne No. 1
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Naxos August 2014 New Release Sampler
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date published: 2014-08-05

Classical Hidden Gems, Vol. 9
type: MusicAlbum
date published: 2024-12-13

Relaxing Classical
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date published: 2023-12-01

Relaxing Classical Cello
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date published: 2024-01-05