The psychology is the really hard part. I think it should mimic tried and true real life coins. The spychological cost is managed by having limited number of d

The psychology is the really hard part. I think it should mimic tried and true real life coins. The spychological cost is managed by having limited number of different coins available. And the value of coin is small, but meaninful enough to be considered. In contrast to something infinitesimally close to zero. Let's say I make payment of 5$ to your account with my email address in the message field. You send me 20 hashes to that address, each worth 20snt. Now I see artists webpage with "tip me" field. I paste a hash, you make the money happen. Simple enough?