Coinkite Coldcard Mk4

€195,00 Sold out
Tax included. Shipping calculated at checkout.
  • Free shipping – for orders over €60.00
  • Fast delivery – warehouse and shipping in DE
  • Pay securely – also pay with Bitcoin (Lightning)

COLDCARD Mk4 Details

Mk4 Improvements

  • USB-C Port
  • Unlimited Storage, No Bitcoin Transaction Size Limit
  • NFC Tap for all data types, PSBT, address, etc...
  • New design with 2x Secure Elements (multi-vendor)
  • New plastic
  • Faster processor
  • ... and much more, details to follow!
 
 
Coinkite Coldcard is BIP39 based, which means you can backup the secret words on paper and have many sub-accounts and unlimited independent payment addresses.
It knows how to understand transactions so you can see what you are approving.
But it's different!
NO special software needed. It looks like a hard drive so you can drag & drop files onto the hard drive. NO companion "app" on your computer!
It's affordable! Simple packaging, plain design, no fancy boxes, no redundant cables.
It's ultra-secure! A real crypto security chip. Your private key is stored in a dedicated security chip, not in the main micro's flash.
Easy backup! MicroSD card slot for backup and data storage. This allows for true offline signing by transferring unsigned/signed transactions via sneakernet.
Open Source Software Design runs on Micropython and you can change it.
More Features:
Full-size numeric keypad allows for easy and fast PIN entry.
Larger 128x64 OLED screen.
 

Manufacturer information:
Coinkite Inc.