Nano (formerly known as Raiblocks) is an open source cryptocurrency, and is characterized by its high performance. Which offers simultaneous and immediate transactions totally free of commission. It differs from Bit coin, since it does not use Block chaim, but DAG. It has been considered a fairly green currency since it uses less energy to carry out transactions, that is, it supports and promotes certain ecological movements, which lowers certain costs in case you want to enter this world for new miners and developers.