what cannbis coin to buy
I dont think there are any cannabis coin. There are coins usually a Bitcoin clones that use name or market themself as such.
I am not sure what is important for such coin. To not have transparent ledger? Darkmarkets use Monero.
There are cannabis based coins in the market. I have forgotten what name though but im sure there are coins existing and they do make use of erc20 tokens but mostly these tokens arent really worth to invest since this coins pumped out only when theres a significant news related to it which it can really potentially make a pump and dump scenario.
Well I have seen one, they have raised 13M USD in their ICO. They are from Canada and their product is about medicinal use of cannabis. They only have 598 people in the telegram, it's hard to believed that they have reach that funds. The coin's name is PCT, known as Perks Coin Token.