Coldcard
Ultra-secure Bitcoin hardware wallet with dual secure elements and air-gapped signing.
Why We Recommend Coldcard
Bitcoin-only design since 2012. Dual secure elements (Microchip ATECC608 and Maxim DS28C36B). Fully air-gapped operation via MicroSD or NFC. 100% open-source firmware. Made in Canada with secure supply chain (tamper-evident packaging).
Best For
Ideal for Bitcoin holders seeking maximum security through air-gapping and advanced features like multisig support. Perfect for power users and privacy-conscious individuals who value hardware isolation, extensive PIN security options (Trick PINs, Duress PIN, Brick Me PIN), and seed phrase protection without any altcoin distractions.
Services & Features
- Coldcard Mk4 (USB-C, NFC, dual secure elements)
- Coldcard Q (QWERTY keyboard, QR scanner, large screen)
- SEEDPLATE metal backup
- Trick PINs and Duress wallet
- Spending policies and multisig support
- USB Virtual Disk Mode for easy PSBT transfers
Considerations
Steeper learning curve than some alternatives. Calculator-style interface is functional but not touchscreen. Mk4 priced around $160 USD. Bitcoin-only (no altcoin support).
