Version 3.1.8 Released (Lots ...

Version 3.1.8 Released (Lots of enhancements)
Major Performance Boosts! Read Post

Version 3.1.4 Released (BIP-8...

Version 3.1.4 Released (BIP-85 added / BIP-143 defences)
Security Fix (BIP-143 replay attack) Read Post

BIP-143 Vulnerability

BIP-143 Vulnerability
A security researcher has reportedan attack leveraging an knownissue with how BIP-143 commits to segwit inputs.If malwareis in a position to tamper with your PSBT data, and it can... Read Post

Laser Fault Injection

Laser Fault Injection
Ledger’s Donjon lab has posted anew security report regarding the older Coldcard  Mk2 .It’s an amazing report, and very exciting to see theextreme level of resources put... Read Post

SEEDPLATE Bitcoin metal backup

SEEDPLATE Bitcoin metal backup
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Coldcard firmware update: 3.1.3

Coldcard firmware update: 3.1.3
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COLDPOWER 9volt Battery to USB

COLDPOWER 9volt Battery to USB
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Blockclock Firmware updated

Blockclock Firmware updated
Firmware Upgrade Time! Read Post

Supply Chain Trust Minimized

Supply Chain Trust Minimized
Just getting a legit Coldcard into your hands is the hard partsometimes—not just with international shipping and customsshenanigans. Read Post

Version 3.0.6 Released (Secur...

Version 3.0.6 Released (Security Update)
Security Fix (Multisig Users) Read Post

Login Countdown and Nickname

Login Countdown and Nickname
With 3.0.3 release we have two new optional features, Login Countdown and Device Nickname. Read Post

Troublesome Change Outputs

Troublesome Change Outputs
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Coldcard Hardware Details

Coldcard Hardware Details
Today we have posted all the information you need to be able tobuild your own Coldcard from off-the-shelf parts. We are sharingthis information for the benefit of security resear... Read Post

Affiliate Program (Beta)

Affiliate Program (Beta)
We now have an affiliate program for all Coinkite products. It’s pretty simple: we payyou when our products are shipped! Either as store credit, where $100 earned is $150in credit... Read Post

Coldcard Address Explorer

Coldcard Address Explorer
Firmware update for powerful new feature: "The Address Explorer" Read Post

Coldcard™ Mark 3 Announcement

Coldcard™ Mark 3 Announcement
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Possible Information Leak, Co...

Possible Information Leak, Considered Unlikely
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Keep Your Pins Long, and Your...

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

Some Other Wallets.fail

Some Other Wallets.fail
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Coldcard Firmware 1.1.0

Coldcard Firmware 1.1.0
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Coldcard Firmware 1.0.1

Coldcard Firmware 1.0.1
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Announcing: Coldcard™

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

Announcing: Opendime V3

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