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

Recording identifiers

ISRC

USBC10401986

Release date of the album this recording appears on

2004-09-28

CopyrightID (CopyrightChains transaction hash)

0x470ee5918aa41e315c880ea98483bade23947d597d30fe04c93b5cc3d90dde18

Copyright registration time

2026-06-21T20:53:26+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:30:09Z

Bitcoin block

956302

Canonical record hash

sha256:537c05584d0af826e1e0a05e5faef0c0b4d7033af67eb932b75ddd9284876abe

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC USBC10401986

What this proof establishes

This recording was released in 2004, 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.