Nocturnes, Op. 15: No. 2 in F-Sharp Major

Recording by Frédéric Chopin.

Recording identifiers

ISRC
FRZ110100108
CopyrightID (CopyrightChains transaction hash)
0x9be4abefc33d46dbb0bc0eeefd14c1941bc0b2df45e2ad4294c96a6be0ab95f0
Copyright registration time
2026-07-07T04:27:49+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:0cf3c8a5143aae4f2a5ffccdf5c3c27bfc5ba42a44c98d4a211ef3e5f2af717f

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.