Coldcard™ Mk3

109.00

NEW! Mk3 with upgraded secure element, 2.5x more RAM for more complex transactions, additional side-channel defenses, and much more! 

Limited First Batch

Description

 SECURE ELEMENT 
 OPEN SOURCE

Physical Security. Your seed words are stored in a specialized chip, designed to securely store secrets. All code is open source, and you can compile it yourself.

 TRUE AIR-GAP OPERATION

Only hardware wallet with option to never be connected to a computer, for full operation: from seed generation, to transaction signing. Uses PSBT (BIP174) natively!


MK3 PACKED WITH FEATURES


  • NUMERIC KEYPAD

    Full-sized numeric keypad makes entering PIN easy and quick.


  • BRIGHT SCREEN

    Bright, 128×64 pixel OLED screen. Shows all the critical details of your transactions.


  • MADE IN CANADA

    Lovingly soldered in Toronto, Canada. Secure supply chain verified with: tamper-evident numbered bag, with bag number recorded into device.


  • IT’S AFFORDABLE!

    Simple packaging, plain design, no fancy boxes, no redundant cables.


  • IT’S ULTRASECURE

    Real crypto security chip. Your private key is stored in a dedicated security chip, not the main micro’s flash.


  • EASY BACK-UP!

    MicroSD card slot for backup and data storage. This allows truly offline signing, by transferring the unsigned/signed transactions on sneakernet.

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