Piano Sonata No. 32 in C Minor, Op. 111: IIe. Variation IV

Recording identifiers

ISRC

DEN961903586

Release date of the album this recording appears on

2020-02-21

CopyrightID (CopyrightChains transaction hash)

0x196c515c6792706792ba54a77f907a0cce3d0cebb91e42a6e8da16e149463776

Copyright registration time

2026-07-29T22:48:43+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T23:20:38Z

Bitcoin block

960163

Canonical record hash

sha256:1f25d712e74bda8257d6acdfe300d89d021e808fbf2e072defdb92f56a811a45

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC DEN961903586

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.