Piano Sonata No. 31 in A-Flat Major, Op. 110: IIIb. Fuga (Allegro ma non troppo)

Recording identifiers

ISRC

DEN961903574

Release date of the album this recording appears on

2020-02-21

CopyrightID (CopyrightChains transaction hash)

0x494668d85d9d8345b661313dd148ad29b65a98eaa6e3fe7cca2066f9c54b1283

Copyright registration time

2026-07-06T07:48:34+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T18:39:05Z

Bitcoin block

957073

Canonical record hash

sha256:203d77ad669f94b91587cfb38c3a74bbee9e02b610c4cc42f76da3c3ac74bdd8

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC DEN961903574

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.