personally i think bitcoin is an assets,when ever bitcoin is a currency, but bitcoin currency is very strong currency so we can say bitcoin is a currency and big an asset.
According to me bitcoin is an assets for everything which are related to money. Bitcoin is biggest asset for investment purposes. Bitcoin mainly use for short term investment purposes because of its increasing market price. Bitcoin is also as a international money transaction medium because of its untraceable and uninterrupted money transaction facility. It is also use as asset for international money exchange medium. Sometime Bitcoin is also an asset for a negative purpose like criminal activities like cyber crime, malware attack etc.