Études, Op. 10: No. 3 in C Major, Tristesse

Recording by Frédéric Chopin.

Recording identifiers

ISRC
ITD542001847
Release date of the album this recording appears on
2020-11-27
CopyrightID (CopyrightChains transaction hash)
0x40732990740633bcf1494e5b11c7627c83efae02d409b39be2d6608dd854b41c
Copyright registration time
2026-06-07T06:47:33+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:53:06Z
Bitcoin block
953515
Canonical record hash
sha256:f5a9c75c6063beb7eb62095ff206d6a303ab1cb6e20dbdbbe8e9f535933a3cef

What this proof establishes

This recording was released in 2020, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.