Product record · COLDCARD
COLDCARD Q
hardware_deviceactiveon_salesupported
COLDCARD Q Bitcoin-only hardware signing device in the COLDCARD lineage.
- Launch
- 2024
- Sales
- on_sale
- Support
- supported
- Variants
- —
- Confidence
- high
- Last verified
- 2026-08-14
Lifecycle
Product timeline
2026-07-30
vulnerability_disclosedcritical
Seed-generation entropy defect disclosed
COLDCARD disclosed a seed-generation defect in affected firmware lines. Fixed releases restore the intended hardware-randomness path for future seed generation, but existing affected seeds require migration unless an advisory exception applies.
2026-07-31
firmware_fixcritical
Fixed COLDCARD firmware released across supported model lines
Coinkite released fixed firmware for the supported COLDCARD model and track matrix and published migration guidance for existing affected seeds.
Sources