Piano Concerto No. 21 in C, K. 467-Andante

Recording identifiers

ISRC

USA371192306

Release date of the album this recording appears on

2011-02-28

CopyrightID (CopyrightChains transaction hash)

0x875561d18fe073be4b5ce1fbfe2c9eef0496cd8ab29c0e7bb964dc24531b175b

Copyright registration time

2026-07-07T19:23:32+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:22:41Z

Bitcoin block

957120

Canonical record hash

sha256:5efc25898256296a974f7bdb25f99d327c6231efbc6c440b053ba6d6a45c3dbf

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC USA371192306

What this proof establishes

This recording was released in 2011, 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.