Overview
Coinkite is the manufacturer of coldcard Bitcoin hardware wallets and related self-custody products.
Recent Developments
- 2026-07-30/31: Issues warnings after RNG-related fund drains; scope messaging diverges from block technical advisory on which models/firmware generations are affected
- Urges firmware update + fund migration to newly generated seeds
Contradiction
Coinkite public guidance emphasizes Mk3-focused risk; block advisory maps predictable yasmarang-rng fallback / 32-bit reseed across Mk2/Mk3/Mk4/Q/Mk5. Prefer citing both scopes until vendor FAQ and Block note converge (coldcard, hardware-wallet-rng-failures).