Billion Dollar Cryptocurrency Club Swells to Six Members Bitcoin’s market cap surpassed $37 billion today when the price hit $2271.16, commanding more than a billion in trade volume in a 24-hour period, according to coinmarket.com. The total value of the coin market is now at $81.3 billion, as the last two days added more than $10 billion to the capitalization. Bitcoin’s value has almost doubled in the last month, even while its market share has fallen below 50%, thanks to…