Nocturne No.2

Recording by Frédéric Chopin.

Recording identifiers

ISRC
GBLLT2253040
CopyrightID (CopyrightChains transaction hash)
0x2390a4d8be57af12ec93f383c10000552d7703c5b6b57c515daf69ed1a8cdd81
Copyright registration time
2026-07-08T00:47:37+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:419e03a6331696269b748711682691947c9038f6e737fe5919b78d02def98887

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.