La Murmure. Nocturne in A-Flat Major

Recording by Maria Szymanowska.

Recording identifiers

ISRC
NLY330601480
CopyrightID (CopyrightChains transaction hash)
0x02e67dd656464c5add960dc3c5e40712a3bbc91c23f31cbbe30aa76e2742c151
Copyright registration time
2026-07-30T00:18:20+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T00:39:11Z
Bitcoin block
960179
Canonical record hash
sha256:325c258a59e4bdbbdfd6d7ddbc5c336306751a2889f9e6c788232a0b66a7761f

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.