rich1.0plor (npub1v9…8vs7k)https://yabu.me/npub1v9ls4p224ndxvjdxmy9c5dsufnc355sd7q94w6au6uug3dqr68ks08vs7knjumphttps://yabu.meWe have the tools with proof of work to mitigate the worst of spam. There is already a NIP to add PoW to notes, but that makes UX for normal use quite degraded. But what if we only had to do it occasionally? Let's say my profile contains a reference to a note on which I included PoW. Clients then could filter out users by which have shown a certain level of PoW, which if set high enough would make these spam attacks unfeasible.