http://sr7wtu3yb6cv5zz4gshbjnc5cfofv5ulj6jkxgzej4zhupcsriahp6id.onion
Now, about your build audit and endorsement, I think it would be worth a shot approaching "Free Software Foundation Latin America" - https://www.fsfla.org/ikiwiki/selibre/linux-libre/ They maintain the fully libre/ free kernel of Linux and not the one maintained by Torvald which has non-libre/ free code and programs.