Do not display the IP address or introduce more complex CAPTCHA, and Each time an IP address is viewed, a CAPTCHA must be completed again.
https://github.com/TecharoHQ/anubis <https://github.com/bkil/freedom-fighters/blob/master/hu/server/active-abuse-prevention.md>
Due to Relay and bridges exposing IP addresses, ISPs and GFW (Great Firewall) web crawlers detect these IPs and add them to blacklists. Even if new Tor Relay Operators join the Tor network, they won’t last a day. In China, only the WebTunnel bridge is available for 24 hours; after that, it becomes ineffective and is blocked by the ISP’s GFW.