https://mcaptcha.org/docs/prologue/introduction is a 404. (It's the link behind the "Get Started" button.)
A one-sentence describing exactly what it does and how it works would help ;-)
A one-sentence describing exactly what it does and how it works would help ;-)
> A one-sentence describing exactly what it does and how it works would help ;-)
Here goes nothing:
mCaptcha is a privacy-focused, highly accessible CAPTCHA that uses Proof of Work for rate-limiting. It makes the bot/spam spend more time and work sending the request than it takes for the server to respond.