Piano Sonata No. 2 in B-Flat Minor, Op. 35: 3. Marche funèbre (Lento)

Recording identifiers

ISRC

FRUM71302184

Release date of the album this recording appears on

2020-05-30

CopyrightID (CopyrightChains transaction hash)

0xfa66127396fa4de6aef46b70bd19e89380b5a4ec4809aea7023d6f9c6ebd7060

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T09:50:11Z

Bitcoin block

960381

Canonical record hash

sha256:4467647bd2aeb5e1145a2220ec8201266edaecf1cbbca430d8cb29556b52fcc1

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC FRUM71302184

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.