Ethereum

what if you could unsubscribe from airdrops.

getting airdropped spam kind of feels like getting emailed spam.

Or what if you had to consent to participate?

I’m sure a cumbersome way to address it is with account abstraction. Your public address acts as a first layer and any tokens not on a public verified list get quarantined. You’d prob have to go unfreeze them from a dashboard. Verified tokens get forward on to your working wallet where you keep your stuff.

smart contracts for whitelists that you can permissionlessly remove yourself from?

You mean as in receiving scam tokens?

I don't think you can prevent peeps from sending them to you but having them no long show in our wallet would be nice

VC & Engineer | FOGC | Researching, Investing & Building — robinnordnes.com & elixircapital.xyz

This can be done with a SCW with proper setup and supporting services.