Been A Son - Early Demo

Recording by Kurt Cobain.

Recording identifiers

ISRC
USUM71514591
CopyrightID (CopyrightChains transaction hash)
0xac36612dc1bc5806e2efc2ca88b74f22320bcfa4270042efadfd0ea5df9b93d1
Copyright registration time
2026-06-05T21:59:33+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:2f321c3a921ff9ed7fcae67abb7923fde87465072c69e3dc386102bc2f54bcab

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.