The Bach Ensemble
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track: Cantata No. 21, BWV 21 "Ich Hatte Viel Bekümmernis": I. Sinfonia

Cantata No. 21, BWV 21 "Ich Hatte Viel Bekümmernis": I. Sinfonia
type: MusicRecording
duration: PT3M30S
duration ms: 210613
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by artist: The Bach Ensemble
by artist: Helmuth Rilling
by artist: Günther Passin
in album: La Magie Des Plus Beaux Adagios, Vol. 3
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  date published: 2009-05-11
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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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  date published: 2026-07-08T08:56:20Z
audio: Cantata No. 21, BWV 21 "Ich Hatte Viel Bekümmernis": I. Sinfonia
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