I threw together a quick mockup for a "clean" version:

Hello cann community. Long time lurker here. I have thought about the logo from time to time. To me, since CannabisCoin project is for the mmj patients ultimately, it would make sense for the logo to be/contain the green cross (for those who may not know, the green cross is the universal symbol for medical marijuana). The green cross would better symbolize what CANN is all about, and is more professional than a pot leaf. Besides, cannabis is in the coin's name, so it's a bit redundant to have a pot leaf as well. When I walk in downtown Denver and see a sign with a big green cross way down the way, I know immediately that that place is in the mmj business. I also like the phrase E Cannabis Unum, the play on E Pluribus Unum

Anyways, just a thought I had. Cheers