just curious: why do you want to block proxies?
imho as long as your ad provider pays you all should be fine? or are they refusing payments in that case?
A lot of users use proxies because some countries get higher payouts from faucets. They would much rather exert the same energy / electricity and get
paid more for their efforts. Some ad providers already started blocking some faucets, because they detected these proxies being used on a large scale.
In the long run, everyone will suffer when these ad providers pull the funding for all faucet websites.