Piano Sonata No. 32 in C Minor, Op. 111: IIf. Variation V

Recording identifiers

ISRC

DEN961903587

Release date of the album this recording appears on

2020-02-21

CopyrightID (CopyrightChains transaction hash)

0xec353411d4e13860b1e16a42e95813afb35e3643990c5002ec57c3769c630e9b

Copyright registration time

2026-07-29T16:51:09+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T19:35:34Z

Bitcoin block

960138

Canonical record hash

sha256:95341f724fd6194796d3aedfa29de4b9d3b72541093a69052383f70f859d3613

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC DEN961903587

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.