What does HackerNews think of mCaptcha?

A no-nonsense CAPTCHA system with seamless UX | Backend component

Language: Rust

#68 in Rust
As I asked in similar thread the other day, what about proof of work based CAPTCHA like https://github.com/mCaptcha/mCaptcha - which I didn't actually see on any site. Is it used? Since CAPTCHAs can be solved by bots, at least make it more costly for them.
What about proof of work based CAPTCHA like https://github.com/mCaptcha/mCaptcha ? Since CAPTCHAs can be solved by bots, at least make it more costly for them.
>I'll probably migrate to some proof-of-work based schemes and some algorithms to detect anomalous requests, but it would require some engineering work on my part

Have you tried mcaptcha? https://github.com/mCaptcha/mCaptcha

It isn't proprietary [0]. There is a matrix channel [1] for the project to ask questions.

[0] https://github.com/mCaptcha/mCaptcha

[1] https://matrix.to/#/#mCaptcha:matrix.batsense.net

"mCaptcha uses SHA256 based proof-of-work(PoW) to rate limit users."

https://github.com/mCaptcha/mCaptcha