Concerto for Orchestra: IIIa. Passaccaglia, Toccata e Corale. Andante con moto

Recording by Witold Lutosławski.

Recording identifiers

ISRC
GBLWD1006011
Release date of the album this recording appears on
2010-10-01
CopyrightID (CopyrightChains transaction hash)
0x6fa7dfcb10253d2524da7768f84f89a9ebc47464461490a77339c2652b4aa410
Copyright registration time
2026-07-31T19:18:36+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T19:53:13Z
Bitcoin block
960455
Canonical record hash
sha256:3224b67592e2c0d3704850d3da72fed14d33ac6a40d376f5932797b23418e48a

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.