Chopin: Waltz No. 2 in A-Flat Major, Op. 34 No. 1

Recording identifiers

ISRC

GBAYC0502139

Release date of the album this recording appears on

2010-09-03

CopyrightID (CopyrightChains transaction hash)

0x93cf4a75d4dfed340ec7926a4d0047ff9f5e61ab5e07eaf4366a9f67f3251129

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T20:22:46Z

Bitcoin block

960459

Canonical record hash

sha256:76ef24083b8214f644443f7bd486083d9c631ae0f844f50043b9447e8c5ad925

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC0502139

What this proof establishes

This recording was released in 2010, 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.