12 Etudes, Op. 10: No. 2 in A Minor "Chromatique"

Recording by Frédéric Chopin.

Recording identifiers

ISRC
DEN960100113
Release date of the album this recording appears on
2025-05-09
CopyrightID (CopyrightChains transaction hash)
0x7bf25429b3d7c352cef4ba5b8c8fc99c3bfe6a507756ca72b7517feafc556ee7
Copyright registration time
2026-06-25T14:15:54+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:8889899e7f652a3f08a9b880e93e64b3116f011064ce47d3f9fd0bd2027c75ea

What this proof establishes

This recording was released in 2025. ProofProfile's artist catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and this recording entered the record through cc-db-prod's ISRC-linked registration. Its provenance rests on the dates stated above rather than on the era of that source corpus.

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.