Variations on a Theme of Chopin, Op. 22: Variation No. 13 Largo

Recording identifiers

ISRC

DEN961530112

Release date of the album this recording appears on

2025-03-13

CopyrightID (CopyrightChains transaction hash)

0xc82702d24cdadee8d2ee245dbfdd17542c2aaf029e19ac3a4c1382e0719a5321

Copyright registration time

2026-07-03T11:24:41+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T16:43:08Z

Bitcoin block

957064

Canonical record hash

sha256:6061d4893fee4a4142a80d550d560c338c412c86da7c4337afc61b61e3284f23

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC DEN961530112

What this proof establishes

This recording was released in 2025. ProofProfile's artist catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and this recording entered the record through cc-db-prod's ISRC-linked registration. Its provenance rests on the dates stated above rather than on the era of that source corpus.

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.