Symphony No. 1: III. Allegretto misterioso

Recording by Witold Lutosławski.

Recording identifiers

ISRC
PLA392100093
CopyrightID (CopyrightChains transaction hash)
0xf8080b836048b3f2ec0fdb1e948b570727b9b1d0023b54d3c52dc380cbb1bbc9
Copyright registration time
2026-07-31T15:12:13+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T15:20:15Z
Bitcoin block
960418
Canonical record hash
sha256:592f79737fb7d5950bc1087d34dc469cfb22576d3108a768deed1b5d06602933

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.