COLDCARD RNG incident the public record, collected and explained
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Opus missed the bug because submodules were not cloned

utxoclub-opus-missed-submodules

https://x.com/utxoclub/status/2083838008357450063

Captured screenshot of the post by @utxoclub, posted 2 Aug 2026, 08:51 UTC
@utxoclub posted captured full-size capture → original post →
Author
@utxoclub
Organisation
independent
Evidence role
ai-security-response
Posted
Capture status
capture held

UTXOCLUB explains that an Opus audit missed the COLDCARD bug because not enough submodules were cloned, leaving files that contain the issue off disk while present files told a self-consistent story. Held as a dated first-hand technical account of an AI-assisted code-review limitation. The account is the poster's own and is not independently verified here.

This post is registered as evidence and has a locally held capture. The original remains the canonical publication.

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