A cold wallet is a type of cryptocurrency wallet that is not connected to the internet. Cold wallets are typically used to store large amounts of cryptocurrency, as they provide an extra layer of security by keeping the funds offline. Cold wallets are typically stored on a physical device, such as a USB drive or a hardware wallet, and require users to manually enter their private keys in order to access their funds. Cold wallets are a secure way to store cryptocurrency, as they are not vulnerable to online attacks.
