Requiem, Op. 9: Kyrie

Recording by Maurice Duruflé.

Recording identifiers

ISRC
USASX0616902
Release date of the album this recording appears on
1995-01-01
CopyrightID (CopyrightChains transaction hash)
0x0119b0f5d72e18939c75e2c13b355e2d8e3f9e1b9d5a5d87f138fb54678894bc
Copyright registration time
2026-07-30T07:07:42+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T07:28:30Z
Bitcoin block
960220
Canonical record hash
sha256:f056ce590e886d806c09e20491419df85faf92b9fca7202785bb20a4f7bf9203

What this proof establishes

This recording was released in 1995, 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.