COLDCARD RNG incident the public record, collected and explained
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P3b7_ 2085089893328499156

p3b7_-2085089893328499156

https://x.com/P3b7_/status/2085089893328499156

Captured screenshot of the post by @P3b7_, posted 5 Aug 2026, 19:45 UTC
@P3b7_ posted captured full-size capture → original post →
Author
@P3b7_
Organisation
independent
Evidence role
commentary
Posted
Capture status
capture held

Charles Guillemet arguing that open source is a distribution and inspection property rather than a security one, that COLDCARD's source availability was read as security, and that on hardware neither source review nor compilation gives integrity guarantees without attestation and tamper resistance. A substantial technical argument, and one of the sharpest published statements of the source-availability question the incident raised. Guillemet is Ledger's CTO, a direct competitor, which is stated because the post argues for the secure-element and attestation model Ledger sells.

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

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