Piano Concerto No. 21 in C, K.467: 2. Andante

Recording identifiers

ISRC

NLA507200342

Release date of the album this recording appears on

1972-01-01

CopyrightID (CopyrightChains transaction hash)

0x9788f6b93f23cccbdf947cd7086c0fe7402c33e119a8c233430b65e8549fa42d

Copyright registration time

2026-06-08T04:10:57+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-06-13T13:32:09Z

Bitcoin block

953520

Canonical record hash

sha256:bcdd51956b06f9c2e0e2ca03d24cc24f4b0fc6c17b7f4ccfe1b8459bf754c3a7

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC NLA507200342

What this proof establishes

This recording was released in 1972, 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.