Maximum Security for your Bitcoins
The COLDKIT is the most secure set of accessories ensuring 100% effective self-custody, making it the safest option on the market.
No Trust. Do It YourselfTM
Amnesic
security system
Krux, included in the Coldkit, offers innovative security architecture that eliminates the need for a traditional secure element. It features a completely amnesic system that doesn't retain sensitive data in hardware.
Open source
KRUX GitHub
All Krux code can be viewed, edited, verified, and most importantly, reproduced. You can review, compile, and prove it yourself!
Air Gapped
Complete network isolation with absolute physical separation from any external connectivity. The hardware is designed without wireless communication components, including Bluetooth modules, NFC transmitters, or Wi-Fi interfaces.
Security that renews itself with every access
Partially Signed Bitcoin Transactions
Extreme compatibility.
Interoperation between Bitcoin hardware wallets is now possible, thanks to BIP174, which introduced a binary file format that all hardware wallets can use. Krux has been based on BIP174 from day one and uses it exclusively.
