Piano Concerto No. 21 in C Major, K. 467: II. Andante

Recording identifiers

ISRC

NLA508403305

Release date of the album this recording appears on

1993-12-12

CopyrightID (CopyrightChains transaction hash)

0xd75e9852df3c0e496d5463d7518a886e7b7aa7b95c4ecd1b3c78e544be07a7ae

Copyright registration time

2026-06-18T02:55:55+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T13:52:39Z

Bitcoin block

957043

Canonical record hash

sha256:2297d5208129d697d82a3853cde8f4e0a3916c51f43d6062b909227facfa80a5

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC NLA508403305

What this proof establishes

This recording was released in 1993, 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.