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Dive into a collection of past posts and rediscover timeless content.
COLDCARD 5.5.1 and 1.4.1Q

Jul 2, 2026

•

4 min read

COLDCARD 5.5.1 and 1.4.1Q

New COLDCARD Release: Versions 5.5.1 (Mk4/Mk5) and 1.4.1 (Q)

product-update

+1

COLDCARD Mk5 is out!

Jun 4, 2026

•

1 min read

COLDCARD Mk5 is out!

We’ve been hard at work, and we’re incredibly proud of the launch of the COLDCARD Mk5.

COLDCARD Co-Sign and Key Teleport

Apr 21, 2025

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2 min read

COLDCARD Co-Sign and Key Teleport

New COLDCARD Release: Many BIG features & Fixes!

blackfriday

+1

Coinkite #BLACKFRIDAY sale started ! 🛍️🎉

Nov 22, 2023

•

1 min read

Coinkite #BLACKFRIDAY sale started ! 🛍️🎉

Up to 25% OFF

developer preview

Announcing: Edge Firmware [developer preview] for CC Mk4

May 12, 2023

•

2 min read

Announcing: Edge Firmware [developer preview] for CC Mk4

If you are not a developer, you can ignore Edge version completely.

NVK
Coinkite
NVK, +1
Huge Mk4 Release! Version 5.1.0

Feb 27, 2023

•

1 min read

Huge Mk4 Release! Version 5.1.0

MicroSD as 2FA, Import TAPSIGNER as main/ephemeral seed, Detached sig for exports, App-specific deriv paths, Import/Export overhaul, incl Samourai POST/PRE-MIX, Opt to save pw 4 next backup & more

NVK
Coinkite
NVK, +1
Meet the COLDCARD Q1

Feb 9, 2023

•

2 min read

Meet the COLDCARD Q1

Uncompromising Security & Convenience: Full QWERTY Keyboard, Dedicated Function Keys, and Unbeatable MicroSD Power

NVK
Coinkite
NVK, +1
Proof of Keys Vol 3. Final

Jan 20, 2023

•

12 min read

Proof of Keys Vol 3. Final

On Breaking SHA256 FUD, Attack Surfaces of Computers, Bitcoin Binary Watch Bot, Quantum Computing & Multisig Grifters Attacks

NVK
Coinkite
NVK, +1
Understanding The COLDCARD Mk4 Security Model and Secure Element Use

Jan 16, 2023

•

14 min read

Understanding The COLDCARD Mk4 Security Model and Secure Element Use

By Tristan Borges Solari (guest author)

Coinkite
Coinkite
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