Nocturnes, Op. 9: No. 2, Andante in E-Flat Major

Recording by Frédéric Chopin.

Recording identifiers

ISRC
SEWDL9750006
CopyrightID (CopyrightChains transaction hash)
0x5c38d5fa357f15b52b9ef5added3acb1892998329184799cf63a15d6a6806d95
Copyright registration time
2026-06-04T14:08:45+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:47:07Z
Bitcoin block
953513
Canonical record hash
sha256:1dde2f1e910337dc7cc9ce1e45287ec12835c6ef79501a73d386f740ef2d64a5

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.