Introducing the COLDCARD Mk5
The Mk4 is a proven workhorse. It’s secure, it’s air-gapped, and it gets the job done. But engineering is about moving forward. Today, we’re introducing the next step in that evolution: the COLDCARD Mk5.
The Mk5 builds on the trusted, battle-tested security core of the COLDCARD with a redesigned user experience focused on durability, visibility, and modern convenience.
What’s Evolved?
We’ve refined the parts you interact with most, making the entire process smoother and more robust.
- Enhanced Interface: The Mk5 features a new 1.54-inch display protected by Gorilla Glass for maximum durability and significantly improved clarity. Complementing this is a completely redesigned keypad with precise, tactile keys for more reliable and confident entry.
- Modern Design & Ergonomics: The entire unit has been re-engineered into a more compact and robust form factor. The USB-C port is now located on the bottom of the device, improving ergonomics and ease of access when the unit is powered on a desk.
- Improved Wireless: NFC communication is faster and more reliable, enhancing the Push TX feature for seamless, air-gapped broadcasting of transactions to a compatible mobile device.
- Personalization: For the first time, the COLDCARD will be available in multiple colors, allowing you to choose a style that suits you.
What’s Unchanged?
The core security principles that define a COLDCARD remain absolute. We don’t compromise on security.
- 100% Air-Gapped: Your keys never touch an internet-connected computer. This is a fundamental rule that will not change.
- Dual Secure Element Key Storage: The master secret and 24-word seed phrase remain protected by two Secure Elements from different vendors.
- Firmware Verification: The “Genuine” (green) or “Caution” (red) LED on boot-up still provides instant, verifiable proof of firmware integrity. The tamper-evident circuit is still visibly exposed.
- Anti-Phishing Measures: The unique on-screen words for each PIN prefix remain a powerful defense against phishing, unique to each COLDCARD.
- Open Source & Bitcoin-Only: The firmware remains open-source, audited, and designed exclusively for Bitcoin.
The Mk5 is 100% backwards-compatible with your existing COLDCARD backups and workflows. This is a seamless upgrade path for the community.
The Bottom Line
The COLDCARD Mk5 is the next generation of the hardware wallet you trust. It delivers meaningful improvements to usability and durability while standing firmly on the same uncompromised security foundation.
It’s available now.
Hands-On with the Mk5
Mk5 Image Gallery
