Requiem pour soli, choeurs et orgue, Op. 9: II. Kyrie

Recording by Maurice Duruflé.

Recording identifiers

ISRC
GBLLH1957112
Release date of the album this recording appears on
2019-04-05
CopyrightID (CopyrightChains transaction hash)
0x115e5ed67005b965b474bb75acc37f65125d84b2f16d4d1a71beeb5cac1d2d19
Copyright registration time
2026-07-07T04:20:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:47922d8d2dee1bfac98fb5cff0903987ed464bcf66b11e6d3688a0cceb1160b7

What this proof establishes

This recording was released in 2019, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.