The Best Bitcoin Hardware Wallets & Seed Phrase Backup Tools
A simple directory of the best Bitcoin signing devices, metal seed backup tools, and supporting wallet software — because your sats are best stored cold.
COLDCARD Mk5
Bitcoin-only hardware signing device with dual secure elements, NFC, and air-gapped MicroSD signing. Made by Coinkite. From $169.94.
The COLDCARD Mk5 is Coinkite's compact Bitcoin-only hardware wallet and signing device, trusted by security-focused Bitcoiners since 2017. It features dual secure elements (Microchip ATECC608 + Maxim DS28C36B), a 128x64 OLED display, a numeric keypad with protective sliding cover, NFC-V support, and fully air-gapped transaction signing via MicroSD. The Mk5 runs fully open-source, verifiable firmware with no companion app or cloud account required. Supports PSBT (BIP174), BIP85, multiple duress PIN countermeasures, and encrypted backups. Available in multiple colors from $169.94.
