Piano Sonata No. 21 in B Flat Major, D. 960: IV. Allegro ma non troppo

Recording identifiers

ISRC

DEF058702214

Release date of the album this recording appears on

2013-01-01

CopyrightID (CopyrightChains transaction hash)

0xe79249f5305babdb9fc84b97960c7b2721a4d140e1479cc1fed6bcc9b6639fcf

Copyright registration time

2026-07-31T16:21:13+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T16:33:26Z

Bitcoin block

960435

Canonical record hash

sha256:a9db29226c1b86c9502595c696ce512494485f681206f5ee047c081c18f8674f

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC DEF058702214

What this proof establishes

This recording was released in 2013, 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.