Piano Sonata No. 2 in C Minor: II. Allegro

Recording identifiers

ISRC

NLY332100445

Release date of the album this recording appears on

2021-07-30

CopyrightID (CopyrightChains transaction hash)

0xdc5b40cf9b12d9ed91938bda9c7bcb3dbda7c0337d3237b9c8b1c47593cf87e1

Copyright registration time

2026-07-31T17:52:45+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T18:48:12Z

Bitcoin block

960448

Canonical record hash

sha256:5b9289f1f95ba818be3f29622f0e45a3e6ec181713d66202f535320460c11eaa

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
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• Recording evidence summary for ISRC NLY332100445

What this proof establishes

This recording was released in 2021, 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.