Requiem, Op. 9: Libera me

Recording by Maurice Duruflé.

Recording identifiers

ISRC
SEAEM0506080
CopyrightID (CopyrightChains transaction hash)
0x3f2664bdd7b76f04a5f26149afec43c7ad5457a2ff3e2144b5266f567a6bce99
Copyright registration time
2026-07-07T12:37:54+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:c5b2683b28ce719406aff8756667cb7813777e40cbebbe94fef0f6d0550e711f

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.