Contredanse in G-Flat Major, KK Anh. Ia/4

Recording by Frédéric Chopin.

Recording identifiers

ISRC
GBF077940509
CopyrightID (CopyrightChains transaction hash)
0xe6331dfec19b96cab71b89ad5ad277fb97bfa6004fcc7548ecc65be6b4b38eb3
Copyright registration time
2026-07-03T17:48:08+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-06T07:16:32Z
Bitcoin block
956891
Canonical record hash
sha256:b9659b8aef60a013d5f214038a7214cdb59719a4d659b24ba77eb040ab7d2f9e

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.