Prelude in A-Flat Major, KK IVb/7

Recording by Frédéric Chopin.

Recording identifiers

ISRC
DEN962302110
CopyrightID (CopyrightChains transaction hash)
0xeabb92940e0730aa91ef9d8e4f7f1dc21e51b57db80b71e73b9b9612c73971ed
Copyright registration time
2026-07-06T20:20:17+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:b6e651ac53b4b23b0a62650106130575684e1fc8a4da0a17ddd092131ae157f8

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.