Nocturnes, Op. 62: No. 2 in E Major

Recording by Frédéric Chopin.

Recording identifiers

ISRC
ITBZ81800130
CopyrightID (CopyrightChains transaction hash)
0xf2bdf18240d76232ebfe50615c49700bb918b9ca7987c3fa4ba437f5ffb052e9
Copyright registration time
2026-07-06T10:14:07+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T16:54:37Z
Bitcoin block
957067
Canonical record hash
sha256:62636bd310de4e75271781647b10d6490189292999919236f65386afff6be737

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.