Endellion String Quartet
type: MusicGroup
genre: chamber music
genre: classical
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album: Bridge & Walton: String Quartets
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  date published: 1991-01-01
album: Haydn - String Quartets Opp.54 & 74
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album: Dvorak/Smetana/Martinu - String Works
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album: Haydn : String Quartets Nos 1, 4 & 5, 'The Lark'
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    genre: chamber music
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-20T10:32:18Z
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track: String Quartet, Op. 11: II. Adagio
track: Allegretto for String Quartet in B, WoO 210
track: Dvořák: String Quartet No. 12 in F Major, Op. 96, B. 179 "American": II. Lento

String Quartet, Op. 11: II. Adagio
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by artist: Samuel Barber
by artist: Endellion String Quartet
in album: Relaxing Children's Classical
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  date published: 2021-09-15
popularity: 9
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  date published: 2026-07-02T11:38:34Z
audio: String Quartet, Op. 11: II. Adagio
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Allegretto for String Quartet in B, WoO 210
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by artist: Ludwig van Beethoven
by artist: Endellion String Quartet
by artist: Andrew Watkinson
by artist: Ralph De Souza
by artist: Garfield Jackson
by artist: David Waterman
in album: Beethoven 2020 - Rarities
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  date published: 2019-08-30
genre: classical
genre: classical-piano
genre: chamber-music
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  date published: 2026-06-13T15:41:10Z
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Dvořák: String Quartet No. 12 in F Major, Op. 96, B. 179 "American": II. Lento
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by artist: Antonín Dvořák
by artist: Endellion String Quartet
in album: The Very Best of Dvorak
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  date published: 2007-01-15
genre: classical
genre: late-romantic-era
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  date published: 2026-07-31T02:19:15Z
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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