Nocturnes, Op. 15: No. 3 in G Minor

Recording by Frédéric Chopin.

Recording identifiers

ISRC
ITBZ81800118
CopyrightID (CopyrightChains transaction hash)
0xac277c8c98daa05cce63c3774acabdc1fec9ffb0c2cbfa4d750f23aa9d3e92c3
Copyright registration time
2026-07-29T16:08:05+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T19:35:34Z
Bitcoin block
960138
Canonical record hash
sha256:d2f6bda3d5859ce2ac0d3c1d23555bf1875ea0bfbcce1e3d2df001c60a9cfc2d

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.