Piano Concerto No. 2 in F Minor, Op. 21: II. Larghetto

Recording identifiers

ISRC

CALC41800402

Release date of the album this recording appears on

2019-02-22

CopyrightID (CopyrightChains transaction hash)

0xf6e61be8aad054d4e1b9ce89ebe7ea307126373870c0d65d76be55098a0eb160

Copyright registration time

2026-06-22T04:01:54+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:fc47e84101f9b254fb4e51d9bace7a625144fe9d632de5bd5d3c1985a2f2f08a

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• Recording evidence summary for ISRC CALC41800402

What this proof establishes

This recording was released in 2019, 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.