To impose delays, there must be some way of identifying users individually. But to do so will have privacy implications. PoW is a stateless way of imposing delays without the privacy implications of tracking.
That said, it isn't perfect. I'm on the lookout for cleaner and more efficient ways of doing it.
To impose delays, there must be some way of identifying users individually. But to do so will have privacy implications. PoW is a stateless way of imposing delays without the privacy implications of tracking.
That said, it isn't perfect. I'm on the lookout for cleaner and more efficient ways of doing it.