Nocturne

Recording by Frédéric Chopin.

Recording identifiers

ISRC
QMFMF1471427
CopyrightID (CopyrightChains transaction hash)
0xb679002d079019e2665907a32076d4567d5edfeaee5b8bfd67869c5d5cb3e022
Copyright registration time
2026-07-31T10:24:01+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T12:24:41Z
Bitcoin block
960397
Canonical record hash
sha256:565935988ad4337e2d0d6c5da036a8519c83ebcf59ccc38c24025b3bd806d492

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.