Coinkite has released version 4.0.0 of its coldcard hardware wallet product, a major update that focuses on improving security features in the wallet.
Coinkite is a pure Bitcoin, data protection and security-oriented hardware manufacturer. As a flagship product, the coldcard has been popular in the maximalist Bitcoin community since its introduction at the end of 2017. It is open source, full of well-considered security functions and technically complex in its data protection innovations. It uses the air gap function to work completely without a computer and is used for the safe storage of private keys.
This update contained important internal changes to improve the security and privacy that the wallet can provide to its users. For example, with the update, a cold card can now use the same elliptical curve library that Bitcoin itself uses to generate its cryptographic functions.
“[Coldcard is] Now use “libsecp256k1” from Bitcoin Core for all ECs [elliptic curve] Crypto operations ”, it says in the release announcement. “This is the same code that Bitcoin Core uses for your bitcoins in the chain.”
Also, the twenty-fourth starting word for restoring bitcoin in the chain can now be calculated for a user.
“During the import of starting phrases, Coldcard calculates the correct checksum after providing 23 words and displays the valid choices for the last word (usually 8),” says the announcement.
There are various other new features as well, and the version is available for download right now via the Coinkite release announcement.