So What? from Cabaret

Recording by Lotte Lenya.

Recording identifiers

ISRC
USSM10605810
CopyrightID (CopyrightChains transaction hash)
0x2f810b28f335c5e4064a2b9576a8346345b5175cefb97e70e24554536bbf66c5
Copyright registration time
2026-07-07T03:41:44+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:2d6d69a859238b6a3dc3181f8a8357127be5f1c0a5975a6297032a098039dd3d

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.