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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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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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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T16:33:26Z
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track: Concerto in C Major for Cello, Strings, and Continuo: III. Allegro
track: Concerto in G Major for Cello, Strings, and Continuo, RV 414: II. Largo
track: Concerto in G Major for Cello, Strings, and Continuo, RV 414: III. Allegro
track: Concerto in A Major for Cello, Strings, and Continuo, GT 1.A28: I. Allegro
track: Concerto in A Major for Cello, Strings, and Continuo, GT 1.A28: II. Larghetto
track: Concerto No. 2 in D Major for Cello, Strings, and Continuo, L. 10: IV. Fuga

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Concerto in C Major for Cello, Strings, and Continuo: III. Allegro
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by artist: Giovanni Battista Sammartini
by artist: Elinor Frey
by artist: Rosa Barocca
by artist: Claude Lapalme
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genre: classical-era
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T17:29:52Z
audio: Concerto in C Major for Cello, Strings, and Continuo: III. Allegro
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Concerto in G Major for Cello, Strings, and Continuo, RV 414: II. Largo
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by artist: Claude Lapalme
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T16:33:26Z
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Concerto in G Major for Cello, Strings, and Continuo, RV 414: III. Allegro
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by artist: Elinor Frey
by artist: Rosa Barocca
by artist: Claude Lapalme
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genre: classical
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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: 2026-07-29T21:09:47Z
audio: Concerto in G Major for Cello, Strings, and Continuo, RV 414: III. Allegro
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Concerto in A Major for Cello, Strings, and Continuo, GT 1.A28: I. Allegro
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  date published: 2026-07-08T03:20:19Z
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Concerto in A Major for Cello, Strings, and Continuo, GT 1.A28: II. Larghetto
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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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Concerto No. 2 in D Major for Cello, Strings, and Continuo, L. 10: IV. Fuga
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T08:04:30Z
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