Variations on a Theme of Chopin, Op. 22: Variation No. 16 Lento

Recording identifiers

ISRC

DEN961530115

CopyrightID (CopyrightChains transaction hash)

0x8c72aaaa4904f800405d10e022d9086c8d5b7e14650c991880286b2d51b02159

Copyright registration time

2026-07-06T06:32:03+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:0e8dc6ed81b09a53f990463a20f9c10a9cf21fda8b195b2ceaf4c3c728173631

• Verify the CopyrightID on CopyrightChains
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What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.