Saylor is always talking about eliminating spam by having users deposit sats as collateral on their accounts.
Do you see such a thing happening on Nostr?
Discussion
Possibly... Proof Of Work is already in the protocol...You can test it with Nostrid. https://github.com/lapulpeta/Nostrid
Good point, if being verified and using paid relays become the standard, that might eliminate the need to combat spam with this kind of "collateral".
Paid relays currently serve this exact function. Pay to join relay. Spam and get kicked out.