To import our Root CA Authority, you can use the following command. (Tested on Ubuntu & Debian GNU/Linux

sudo apt update
sudo apt install ca-certificates
sudo curl -o /usr/local/share/ca-certificates/orwtmc-ecc-root-1.crt https://crypto.frank-ruan.com/x509/orwtmc-ecc-root-1.crt 
sudo update-ca-certificates

If you are on Microsoft Windows or Apple macOS, usually you can just download our .crt certificate and double-click it, the operating system will guide you.

Keep in mind to install our certificate to 'Trusted Root' (usually the second to the top) if you are on Microsoft Windows.