this post was submitted on 07 Jul 2025
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Non paywalled link https://archive.is/VcoE1
It basically boils down to making the browser do some cpu heavy calculations before allowing access. This is no problem for a single user, but for a bot farm this would increase the amount of compute power they need 100x or more.
Exactly. It's called proof-of-work and was originally invented to reduce spam emails but was later used by Bitcoin to control its growth speed
it wasn't made for bitcoin originally? didn't know that!
Originally called hashcash: http://hashcash.org/
TIL
you know it's old when it doesn't have ssl