Dual Secure Element
It provides the best Physical Security. Your seed words are stored in specialized chips, designed solely to securely store secrets. Now dual-vendor!
Verifiable Source Code
All of the Coldcard code is viewable, editable, and verifiable. You can compile it yourself.
Only signing device (hardware wallet) with option to avoid ever being connected to a computer, for its full life cycle: from seed generation, to transaction signing. Uses PSBT (BIP174) natively!
Full-sized numeric keypad makes entering PIN easy and quick.
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, and bag number recorded into device.
Simple packaging, plain design, no fancy boxes, no redundant cables.
Real crypto security chips. Your private key is stored in dedicated security chips, not the main micro’s flash.
MicroSD card slot for backup and data storage. This allows truly offline signing, by transferring the unsigned/signed transactions on sneakernet.