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A comment on Ask HN: Any good FOSS alternative to Google's reCAPTCHA?.

Re:Ask HN: Any good FOSS alternative to Google's reCAPTCHA? by web007 on Wednesday May 06, 2020 @06:20PM (#23097053)
Do you need a CAPTCHA? Or do you need to slow down / stop spammers? Consider hashcash [1] instead of CAPTCHA if #2 is your goal. It can be used in any place where real users interact with your site at almost zero effort on their behalf, and can slow down spamming enough to make you an unattractive target.

I have a terrible / incomplete / janky proof-of-concept version at [2] that you could build from, or you could find one that was built for your CMS / language du jour.

[1] https://en.wikipedia.org/wiki/Hashcash

[2] https://github.com/007/hashcash

[ Parent | on HN ]
Re:Ask HN: Any good FOSS alternative to Google's reCAPTCHA? by gbmor on Wednesday May 06, 2020 @09:57PM (#23098824)
> [2] https://github.com/007/hashcash

Looks like your repo is https://github.com/007/hashcash-js

But, cool! Thanks for sharing.

[ Parent | on HN ]
Re:Ask HN: Any good FOSS alternative to Google's reCAPTCHA? by throwayzz- on Wednesday May 06, 2020 @09:42PM (#23098721)
Proof of work is better IMO
[ Parent | on HN ]
Re:Ask HN: Any good FOSS alternative to Google's reCAPTCHA? by stickac on Thursday May 07, 2020 @02:48PM (#23106664)
hashcash is proof of work
[ Parent | on HN ]