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There's a solution here that's being used in email. The user has to provide a proof of work.
by GLjEI4YbnGD27LB 8y ago
There's a solution here that's being used in email. The user has to provide a proof of work.
- wild_preference 8y agoWhere is it being used? Because the reason why https://en.wikipedia.org/wiki/Hashcash https://en.wikipedia.org/wiki/Hashcash wasn't useful for anti-spam after all is because attackers have access to the cheapest compute in the world: botnets and devices that aren't their own.