Although it is sometimes considered one of a kind, or a first-mover monopolist in the market for cryptocurrencies, Bitcoin is surrounded by effective competitors. Between March 2013 and December 2014, while the market capitalization of Bitcoin grew four-fold, the market cap of other...

At present, bitcoin is held mostly as a speculative vehicle, little used to pay for goods and services. Its value has been unstable, which impedes bitcoin’s wider use as a payment medium. We explain why the value of bitcoin has been so unstable. Then, we discuss entrepreneurial efforts that...