COLDCARD had two hardware RNGs. For more than five years, its wallet seeds used neither. I traced the silent integration failure and how secure components still produced a catastrophically insecure system.

deep dive: https://www.steven-geller.com/2026-08-02-coldcard-had-two-hardware-rngs-its-seeds-used-neither.html

came here over a decade ago with nothing but curiosity; you let me learn, build and belong & i'll never stop being grateful for that. thank you