Valse, Op. 69: No. 2

Recording by Frédéric Chopin.

Recording identifiers

ISRC
DEHY11600693
CopyrightID (CopyrightChains transaction hash)
0x9e053724d5ffc4506d413eb62fc9b45277097e2a22c0c0d04ce0a6f5bf70cd5b
Copyright registration time
2026-06-25T18:54:02+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:e4a77da7a85608617adc04a81b0312c81b3a67d8ec8d851caafef0d8f3fe2c6d

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.