Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funèbre

Recording identifiers

ISRC

DEF057401201

Release date of the album this recording appears on

2006-01-01

CopyrightID (CopyrightChains transaction hash)

0x0074c9edfa0ba4cb17b95fba9e52fd6e63e410edb6f45e9105ec28f9f0d8cbd2

Copyright registration time

2026-06-10T00:10:44+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-06-13T13:32:09Z

Bitcoin block

953520

Canonical record hash

sha256:4ca89dae042536a9e3f1195be9b7c37589ac47a9877023a6213bb4dbc9a3cc40

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC DEF057401201

What this proof establishes

This recording was released in 2006, 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.