Les Sylphides (Orch. Douglas): II. Nocturne No. 10 in A-Flat Major, Op. 32 No. 2

Recording by Frédéric Chopin.

Recording identifiers

ISRC
DEF056102252
Release date of the album this recording appears on
2012-01-01
CopyrightID (CopyrightChains transaction hash)
0xe585f3cdd82f05056c92fa6237676eaf84d962545b0025499c786247438e4539
Copyright registration time
2026-06-26T19:19:59+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:595ae11bca7c258dc8a3a25a7bf16f993b1f88aa8f3d4677a92e629a6d04911c

What this proof establishes

This recording was released in 2012, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.