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.

New! Fourth generation of the Opendime: 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. Trust no one.

Securely generate and keep a private key. Signs transactions like a typical Bitcoin hardware wallet, but with an open design and unique security features.
Learn more here.

Now with physical buttons! Follow-up to our successful Coldcard hardware wallet for holding your Bitcoin private keys. Limited First Batch
Learn more here.

In celebration of ten years of Bitcoin: The Block Clock. An electro-mechanical clock and price ticker designed for Bitcoin and related coins. Track prices from different exchanges, follow Electrum servers on your favourite chain. Includes wireless remote control, free DHL shipping.
Learn more at getblockclock.com.

For one special bundle price, you get:

  1 x Coldcard
  2 x MicroSD Card

For one special bundle price, you get:

  1 x Coldcard Mk2
  2 x MicroSD Card

Industrial Grade MicroSD for secure Coldcard backups. True SLC design w/ wear-leveling & block mgmt. Environmental tested (bend / torque / salt spray / solar radiation) and harsh temperatures: -40°C to +85°C.

Propaganda for the outside of your head.

Black, one-size, 5-panel "trucker-style" cap.

Propaganda for the outside of your head. "Don't Trust Verify" on the back,

Dark Grey, one-size, cap.

Propaganda for the outside of your head.

Black, one-size, 5-panel "trucker-style" cap.

All the stickers!

You can't put Bitcoin in it... but it does hodl your coffee!

White, 11oz.

You can't put Bitcoin in it... but it does hodl your coffee!

White, 11oz.

Participate in the Proof Of Keys every Jan 3rd and Run on your Satoshis, let's make it a tradition

Check out the #ProofOfKeys hat

Participate in the Proof Of Keys every Jan 3rd and Run on your Satoshis, let's make it a tradition

Check out the #SatoshiRun hat

Reads: The NO Foundation / Donate by HODL

Charcoal, one-size, cap.