Requiem, Op. 9: Introit

Recording by Maurice Duruflé.

Recording identifiers

ISRC
SEAEM0506010
CopyrightID (CopyrightChains transaction hash)
0xd0bcde8d09bc6869b8fe6ea43281c91b4924aed34dbe6652026b6276d0577d35
Copyright registration time
2026-07-30T21:30:15+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T22:27:30Z
Bitcoin block
960321
Canonical record hash
sha256:8271d33c12b70f36a2509b2de95f1454688760e7c25895146742092bb3e44185

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.