Bitcoin is mainly used as an alternative currency .It can also be used as an asset and will serve different purpose.Currency be characterized as a medium of exchange a unit of account and a store of value , an asset does generally not possess the first two features and can be clearly distinguished from a currency. Bitcoin mainly used as currency to pay for goods and services it will compare to fiat currency such as dollar it will mainly be used as an investment and will compete with asset .Whether it is currency or an asset ,the potential to influence the economy as a whole depends on the success of Bitcoin, similar alternatives compared existing currencies and financial assets.