Collegium Musicum Zürich
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-17T08:11:48Z
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album: Vivaldi: Concerto No. 11 in D Minor, RV 565; Bach, J.S.: Violin Concerto No. 1 in A Minor, BWV 1041; Brandenburg Concerto No. 4 in G Major, BWV 1049
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  date published: 2023-06-16
  track: 12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 11 in D Minor for 2 Violins and Cello, RV 565: I. Allegro - Adagio spiccato e tutti - Allegro
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      date published: 2023-06-16
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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: Violin Concerto No. 1 in A Minor, BWV 1041: II. Andante
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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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  track: Violin Concerto No. 1 in A Minor, BWV 1041: III. Allegro assai
track: Hohe Anforderungen

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Violin Concerto No. 1 in A Minor, BWV 1041: III. Allegro assai
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by artist: Johann Sebastian Bach
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by artist: Collegium Musicum Zürich
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in album: Vivaldi: Concerto No. 11 in D Minor, RV 565; Bach, J.S.: Violin Concerto No. 1 in A Minor, BWV 1041; Brandenburg Concerto No. 4 in G Major, BWV 1049
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popularity: 3
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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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Hohe Anforderungen
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by artist: Antonio Vivaldi
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by artist: Mstislav Rostropovich
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in album: Wir entdecken Komponisten: Antonio Vivaldi – Frühling, Sommer, Herbst und Winter
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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: 2026-07-08T03:53:27Z
audio: Hohe Anforderungen
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