Orchestre Les Métamorphoses
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subject of: OpenTimestamps Proof of Existence
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track: Erste Kammersymphonie, Op. 9 (Arrangement par Anton Webern)

Erste Kammersymphonie, Op. 9 (Arrangement par Anton Webern)
type: MusicRecording
duration: PT20M35S
duration ms: 1235493
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by artist: Arnold Schoenberg
by artist: Amaury Du Closel
by artist: Orchestre Les Métamorphoses
by artist: Thomas Tacquet
in album: Schoenberg: L'arrangeur arrangé (Voix Étouffées - Missing Voices, Vol. 1)
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  date published: 2024-11-22
genre: classical
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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
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Erste Kammersymphonie, Op. 9 (Arrangement par Anton Webern)
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