1988 Capitol Lake Jam Commercial

Recording by Kurt Cobain.

Recording identifiers

ISRC
USUM71514593
CopyrightID (CopyrightChains transaction hash)
0xa62c3c5899162198d39cd69fd13c72999c90550cc1882218964625a56de89486
Copyright registration time
2026-06-09T05:18:32+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T15:41:10Z
Bitcoin block
953528
Canonical record hash
sha256:b8fb659a98b46ca5d1811abf702bb36fa9ffc6d33861f2d833328614620929cd

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.