With a market capitalization of more than $1.1 trillion, Bitcoin is worth more than Visa and MasterCard combined. The market capitalization of Bitcoin exceeds that of some of the largest US banks, including JPMorgan Chase, Bank of America, and Citigroup. Since early October, when it dabbled with $10,000, the "magical internet capital" has been on a mind-blowing bull run. In a matter of months, the asset's value increased by more than sixfold.