Prelude in A Major, Op. 57, No. 4

Recording by Frédéric Chopin.

Recording identifiers

ISRC
FR47Q1000560
CopyrightID (CopyrightChains transaction hash)
0x6cb80645586aa944628e4b730d2dbac20a97ee5e94fac7e0614ce82c276873da
Copyright registration time
2026-07-07T10:48:07+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:a6a289b49195fbecfc1bff923dd54e62c5f37cb05b7e3e119e3a11b19730e500

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.