Sonata for Piano 4 Hands in G Major, K. 357: II. Andante

Recording identifiers

ISRC

NLA507619603

Release date of the album this recording appears on

2005-01-01

CopyrightID (CopyrightChains transaction hash)

0x8e974148cde2c5d292b247320daba2e0754a5e9686555138e5746c322bae5e39

Copyright registration time

2026-07-06T20:45:13+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:490a8ac38a38ead25ce920f1c317622449a323affd14d641cd6551a635686e69

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC NLA507619603

What this proof establishes

This recording was released in 2005, 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.