Chopin: 24 Preludes, Op.28: No. 4, Largo in E Minor

Recording identifiers

ISRC

TWU710701233

Release date of the album this recording appears on

2007-07-25

CopyrightID (CopyrightChains transaction hash)

0x529c6d3c39503181caa5d3bd83ac31183f156d7d1579de8ba289cd494a1a759a

Copyright registration time

2026-07-31T20:13:18+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T20:22:46Z

Bitcoin block

960459

Canonical record hash

sha256:af7fd8f35735aca192ee57c432d61949517526cd38e1e587d7782a6f033894ee

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC TWU710701233

What this proof establishes

This recording was released in 2007, 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.