Préludes, Op. 28: No. 2 in A Minor, Lento

Recording by Frédéric Chopin.

Recording identifiers

ISRC
FR3KD1507460
CopyrightID (CopyrightChains transaction hash)
0x4daa31acaaa90457a64900fd742cc0f2a410d688ff208575dd1690b773723958
Copyright registration time
2026-07-31T14:30:45+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T15:20:15Z
Bitcoin block
960418
Canonical record hash
sha256:d8452cadd6e3d56fd1c67419c67ff116f80256da41c68e0113188788ede2ab95

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.