Most domain registrars allow you to add "privacy protection" for a nominal fee, which basically replaces your name under the WHOIS registrant info with theirs instead of yours. While this effectively shields outsiders from discovering who you are, the registrar likely knows the information of the original buyer...

It's hosted by Github pages which only needs an email address and is free so no billing info. Domain requires payment and stuff but you can easily use whois privacy protection. Looks like they use "Whois Guard Protection".

In the end they are relying on both whois guard and the domain registrar to keep their anonymity.

There’s absolutely nothing preventing you from registering a domain with fake information... Especially when paying with bitcoin.

Hire someone to represent the fund, and have them do the registration for you.

i highly recommend https://njal.la/ (you can use any email you want and pay with bitcoins)