We all know what a crypto wallet is, which are basically divided into two types, namely hot wallets and cold wallets. Hot wallets are directly related to the internet, such as desktop wallets, mobile wallet applications, web wallets, etc. Meanwhile, cold wallets that are not directly related to the internet, such as paper wallets and hardware wallets, such as Ledger Nano S, Trezor, SafePal S1, BitBox02, etc.