Concerto for Orchestra: IIIb. Passaccaglia, Toccata e Corale. Allegro giusto (alla breve)

Recording by Witold Lutosławski.

Recording identifiers

ISRC
GBLWD1006012
Release date of the album this recording appears on
2010-10-01
CopyrightID (CopyrightChains transaction hash)
0x9da1be86223ba65422c4271886eaa8f0cb7a4f3f47b1c56b1548f5c006926dc5
Copyright registration time
2026-08-01T01:26:47+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-08-01T02:22:04Z
Bitcoin block
960497
Canonical record hash
sha256:b1a590c09d08cff8d22213a5a01310ce545ee47594e64cddc27933b95f175c1c

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.