The 1st Bitcoin Bearer Bond or just call it a "Bitcoin Stick"

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Coldcard Address Explorer

Coldcard Address Explorer
Firmware update for powerful new feature: "The Address Explorer" Oct 8, 2019Read Post

Coldcard™ Mark 3 Announcement

Coldcard™ Mark 3 Announcement
Aug 26, 2019Read Post

Possible Information Leak, Co...

Possible Information Leak, Considered Unlikely
Aug 7, 2019Read Post

Keep Your Pins Long, and Your...

Keep Your Pins Long, and Your Peace of Mind Intact
Jan 28, 2019Read Post

Some Other Wallets.fail

Some Other Wallets.fail
Dec 28, 2018Read Post

Coldcard Firmware 1.1.0

Coldcard Firmware 1.1.0
Nov 26, 2018Read Post

Coldcard Firmware 1.0.1

Coldcard Firmware 1.0.1
Sep 5, 2018Read Post

Announcing: Coldcard™

Announcing: Coldcard™
The World Needs An Open, Cheap & Ultrasecure Hardware Wallet! Pre-Order Now Dec 8, 2017Read Post

Announcing: Opendime V3

Announcing: Opendime V3
You might have noticed that the Opendime store is out-of-stock. Aug 22, 2017Read Post

Opendime V2: Cyberpunk Credst...

Opendime V2: Cyberpunk Credsticks Return
The OpenDime (OpenDime.com) is one of those projects which really captures the imagination. Like I mentioned in the previous video, there’s something distinctly cyberpunk about ... May 20, 2017Read Post

Announcing: Chrome Extension ...

Announcing: Chrome Extension for Opendime
Just as we were finalizing the firmware for V2 of Opendime(now shipping, by the way) we discovered that Chrome, the dominantweb browser, can actually talk to USB devices if the co... Mar 8, 2017Read Post

Announcing: Opendime v2 – Now...

Announcing: Opendime v2 – Now Genuine Verified Bitcoin Credit Stick
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. Dec 27, 2016Read Post