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Introducing Proton CAPTCHA | Proton
(proton.me)
Privacy has become a very important issue in modern society, with companies and governments constantly abusing their power, more and more people are waking up to the importance of digital privacy.
In this community everyone is welcome to post links and discuss topics related to privacy.
much thanks to @gary_host_laptop for the logo design :)
Heard about mCaptcha too
Not sure why they used sha256 though, it mostly defeats the goal of protecting from bots (those can get access to ASICs, as oposed to regular users).