Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Funeral March (Lento)

Recording identifiers

ISRC

FRZ208408203

Release date of the album this recording appears on

2018-06-29

CopyrightID (CopyrightChains transaction hash)

0xadd72fc9ecbf20ed1fbe42a1d399e353eb5ab1b317505d65e846571dccf9a91c

Copyright registration time

2026-07-06T09:19:28+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:179f581b3f859f70087f96396eeab880adf1857a7279ab41c2f1e08f71535816

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC FRZ208408203

What this proof establishes

This recording was released in 2018, 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.