Bitcoin is a very useful and necessary way to make transactions with our money. It operates without authority or central banks. All transactions are carried out by participants of the network. It is known all over the world. Anyone can become the member of the Bitcoin tribe. It opens new horizons of different opportunities. So what is currency?
Definitely bitcoin is a currency because is a means of exchange or trade and also an asset because you can keep it in time and either increased or decrease it's value
As for my opinion, I think bitcoin at the current moment suits the asset recognition. Because as a matter of fact it really is more of an asset of investment more than a currency. There are a lot of things and circumstances that hinder bitcoin and a lot of cryptocurrencies, if not all, the ability to stabilize in value and become currencies. But I think for the current moment it is just fine for bitcoin to be an asset.