Skip to content

Coinkite Coldcard™


Secure your Bitcoin and sleep like a baby

The Coinkite Coldcard Mk4 with upgraded secure elements, USB-C connector, new plastic, optional NFC, massive RAM for multisig, and much-much more.

We have sourced our Coldcard stock directly from Coinkite. You can be sure that there the devices have not been tampered with by verifying the unique ID on the tamper-evident bag as Econoalchemist documented here.

SKU: N/A Categories: , Tag:

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.

True Air-gap

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!


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, and bag number recorded into device.

It’s Affordable

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

It’s Ultrasecure

Real crypto security chips. Your private key is stored in dedicated security chips, 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.

Weight 44 g
Dimensions 8.6 × 5.2 × 0.8 cm

Clear, Orange, Pink, Purple, Blue, Green