Piano Sonata No. 2 in B-Flat Minor, Op. 36: II. Non allegro - Lento

Recording identifiers

ISRC

USSM11902792

Release date of the album this recording appears on

2019-08-23

CopyrightID (CopyrightChains transaction hash)

0xc9267293f516e47133ce00e711af90d6119e564d7d27b4527c8cc9fda121934f

Copyright registration time

2026-07-30T19:20:55+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T19:42:40Z

Bitcoin block

960300

Canonical record hash

sha256:394090e77d9586ec127be9f94cc4b5c9c8bb10c2794631fc9920b616111bd09d

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC USSM11902792

What this proof establishes

This recording was released in 2019, 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.