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Coinkite makes hardware devices that let people store their own Bitcoin offline and sign transactions securely, without trusting a bank or exchange.
Coinkite builds small, specialized gadgets for people who want to hold their own Bitcoin. Its most famous product is the Coldcard, a pocket-sized device that stores Bitcoin keys offline, away from the internet, so that a hacker who breaks into your computer or phone still can't touch your coins. When you want to move Bitcoin, the Coldcard signs the transaction and lets you carry it out on a removable memory card, so the keys themselves never touch a network. The company also makes Opendime, a USB stick-like device that works like a physical bearer Bitcoin, and Satscard, which stores Bitcoin on a card you can physically hand to someone else.
The customer here is the self-custody Bitcoiner—the person who has decided that keeping coins on an exchange or with a bank defeats the point of Bitcoin. They pay Coinkite directly for the hardware, usually a few dozen to a couple hundred dollars per device, and many buy more than one to split up their holdings. Coinkite's pitch is trust: it publishes its designs, opens its firmware for inspection, and builds security features aimed at people who take verification seriously. That has made Coldcard a well-known name among serious Bitcoin holders, even though the company is small and private. The business is deliberately narrow. Coinkite isn't chasing banks or general crypto traders; it's selling hardened security tools to a devoted niche. That focus is both its strength and its limit. Its reputation depends on never being the weak link—one serious flaw in a signing device would be devastating for a company whose entire brand is security. It competes with other hardware wallet makers and, more broadly, with the convenience of just leaving coins on an exchange.
Coinkite is based in Canada and remains privately held, so there's no stock to buy and no quarterly reports to comb through. It is one of the quieter but more respected names in the Bitcoin world: a small hardware shop whose customers care less about flashy apps and more about whether the little device in their safe actually keeps their money safe.
Saved answer · last researched 15 Nov 2026