Contredanse in G-Flat Minor, Op. posth.

Recording by Frédéric Chopin.

Recording identifiers

ISRC
FR47Q1000600
CopyrightID (CopyrightChains transaction hash)
0x4a889e06a2134b4f1e17943ff016ce6d36cc6ac6a0472069ebd1dc7f31d376ea
Copyright registration time
2026-07-07T11:06:18+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:3b88b18bb63eabd5967f3ed25b4094c742420fae336afa6852c7d33633c03a15

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.