Why memory-hard proof-of-work hashes are not a popular choice for CAPTCHA

Posted by ribtoks on Tuesday October 20, 2026 @11:05AM
from the privatecaptcha.com dept.

( 2 comments | 4 points | on HN )

Re:Why memory-hard proof-of-work hashes are not a popular ch... by 7sedam7 on Tuesday October 20, 2026 @12:30PM (#50168910)

i don't know, seems pretty reasonable choice, especially with harder problem for requests that look like bots

[ Parent | on HN ]

Re:Why memory-hard proof-of-work hashes are not a popular ch... by ribtoks on Tuesday October 20, 2026 @01:43PM (#50169957)

Sure, the limitation is mostly on the verification side (of CAPTCHA solution). For client-side it does make sense.

[ Parent | on HN ]