Zach Herbert relays Foundation CTO's Coldcard entropy analysis
zherbert-foundation-entropy-breakdown
- Author
- @zherbert
- Organisation
- Foundation Devices
- Evidence role
- social statement
- Posted
- 31 Jul 2026, 03:00 UTC
- Capture status
- capture held
Zach Herbert relays a statement attributed to Foundation's chief technology officer that COLDCARD Mk4, Mk5 and Q secure elements provide true entropy but only 32 bits of it are retained, and that Mk3 devices running firmware v4.0.0 or later receive no validated cryptographic entropy on the wallet-generation path. Held as a dated technical claim from the CEO of a competing hardware-wallet vendor during the incident response. The claims are attributed to the Foundation CTO and are not independently verified here.
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