Sonata in B-Flat Major for Piano Four-hands, K. 358: II. Adagio

Recording identifiers

ISRC

SEWDL0722111

Release date of the album this recording appears on

2012-02-14

CopyrightID (CopyrightChains transaction hash)

0xe519cc6936031078d71035bceff714dbe8c47355f0b2fd0dc2cc7eab0ca941a9

Copyright registration time

2026-06-23T09:40:07+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:0cda2646adb57ab00f2cdefe70788266b53a4330d00f037ffd21ee611277a304

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
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• Recording evidence summary for ISRC SEWDL0722111

What this proof establishes

This recording was released in 2012, 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.