24 Préludes, Op. 28: 4. in E minor

Recording by Frédéric Chopin.

Recording identifiers

ISRC
DEN960200015
CopyrightID (CopyrightChains transaction hash)
0xa56ce33d0b7e97f45cd5e9cb3215a19d14978240e2e9d90fd29cf171c26d74f4
Copyright registration time
2026-06-10T14:07:04+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:4156090beebd5e081cbc3586f46db16f7a54a3d37eab202b1484559a8959201b

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.