Piano Concerto No. 23 in A Major, K. 488: III. Allegro assai

Recording identifiers

ISRC

GBF078910923

Release date of the album this recording appears on

1991-04-01

CopyrightID (CopyrightChains transaction hash)

0x0172c477d366a78dc123eb29146869f3417113c0c2e34c462137bed699184dce

Copyright registration time

2026-07-31T11:52:00+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T12:24:41Z

Bitcoin block

960397

Canonical record hash

sha256:d4551918fda0df992e0624aef17f84732324680dcb2fd93437c64b7d75504720

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
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• Recording evidence summary for ISRC GBF078910923

What this proof establishes

This recording was released in 1991, 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.