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

Recording identifiers

ISRC

GBF078910921

Release date of the album this recording appears on

1991-04-01

CopyrightID (CopyrightChains transaction hash)

0x51f9dccca98a213cc312f2fc31f859df46749b10e852b438336d6a31c2533ad7

Copyright registration time

2026-07-30T09:43:45+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T09:57:33Z

Bitcoin block

960240

Canonical record hash

sha256:0286f512b46a093e9e568c85fe8fbdf948823be34ab8e1f499b944b5d8ced72c

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
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• Recording evidence summary for ISRC GBF078910921

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.