Nocturne, Op. 55 en mi bémol majeur

Recording by Frédéric Chopin.

Recording identifiers

ISRC
FR6V80780685
CopyrightID (CopyrightChains transaction hash)
0xceef55ec9f68f35f9c47bc7612e8ed2a91194fdfb3d2c40c031af6772470ecfe
Copyright registration time
2026-07-07T05:00:36+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:39de4d8d5c6190847b26c4fa8303537066da2593d2f048f4b7d0b169fafd6462

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.