This is the most realistic solution. Adding a 0.5/1s PoW to hosted services isn’t gonna be a big deal for the end user, but offers a tiny bit of protection against bots, especially if the work factor is variable and escalates.
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Honestly we need some sort of proof of work (PoW)
This is the most realistic solution. Adding a 0.5/1s PoW to hosted services isn’t gonna be a big deal for the end user, but offers a tiny bit of protection against bots, especially if the work factor is variable and escalates.
It also is practical for bots. It forces people to not abuse resources.
There are a lot of crypto which increase workfactor PoW to combat spam. Nano is one of them, so it’s a pretty proven technology, too.
I’m putting crypto on my website. However, I think it would be feasible to do Argon2.