World's 1st and only Real Physical Bitcoin
Opendime is a small USB stick that allows you to spend Bitcoin like a dollar bill. Pass it along multiple times. Connect to any USB to check balance. Unseal anytime to spend online. Trust no one.
A Open, Cheap & Ultrasecure Hardware Wallet!
Coldcard is a Bitcoin hardware wallet, it signs transactions to keep the private keys offline.
Self-Host Your Bitcoin Projects Securely
Hardened servers for hosting Bitcoin cold and hot wallets.