Guestbook
Anyone who holds an SSH key published on their GitHub account can add their name.
how to sign
echo youGitHub username \ | ssh-keygen -Y sign -n guestbook@thew.sh -f ~/.ssh/id_ed25519path to GitHub private key - \ | curl -sX POST --data-binary @- 'https://thew.sh/sign?user=youGitHub username'
"youGitHub username" ` | ssh-keygen -Y sign -n guestbook@thew.sh -f $HOME\.ssh\id_ed25519path to GitHub private key - ` | curl.exe -sX POST --data-binary '@-' 'https://thew.sh/sign?user=youGitHub username'
1 signed