Been watching the crypto currency markets with a keen eye on Cannabis Coin. The developers claim that they can back the coin with their own strain being developed in AZ. They are doing this in cooperation with one of the biggest dispensaries there. There plans are to create a payment system for dispensaries and clinics. Full information can be found on bitcointalk just Google Cannabis Coin to get the skinny. Not sure if links are allowed and don't want to peeve anyone off since I am new here.