openssl s_client -connect znc.itunix.cloud:6697 </dev/null 2>/dev/null | openssl x509 -in /dev/stdin -noout -fingerprint -sha256  | sed s/://g | cut -c 20-

5A038025E789ED2F1032EB15XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX08FA693

/server add BNC znc.itunix.cloud/6697 -ssl -username=l__q/freenode -password=XXXXXXXXXXXX -autoconnect
/set irc.server.BNC.ssl_fingerprint 5A038025E789ED2F1032EB15XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX08FA693
/connect BNC
/save