It seems like only yesterday we were talking about Bitcoin hitting the $9,000 mark. Today it's closing in on $10,000 and the cryptocurrency market has reached a market value of $300 billion. This is starting to look like one tremendous bubble and it's going to be very painful when it pops. However, it's nice to ride the wave as long as it's there. The digital currency market rose above $300 billion for the first time on Sunday evening, according to industry website coinmerketcap.com. By 9:00 a.m. London time on Monday morning the total market capitalization had reached $304,628,469,227. This came as the most prominent cryptocurrency, bitcoin, passed the $9,600 threshold earlier on Monday and Ethereum reached a new all-time high.