TAUcoin is a pure cryptocurrency without any of the fancy smart-contracting frills. It does exactly what it says on the tin, acts as a unit of currency. However, unlike other cryptocurrencies that are extremely damaging to the environment (PoW-based) and favor the wealthy (PoS-based), TAUcoin instead rewards people for actually transacting with their balance, rather than just holding for speculation unlike many cryptocurrencies. This gives TAU extraordinary utility as it promotes the velocity of money, rather than encouraging the hodl mentality.