CoinMarketCap launched operations in 2013 following seven cryptocurrencies and handful of exchanges and markets with a total market capitalization of $1.6 billion USD at the time. As of October 3rd, 2018, that number had grown to tracking over 2,000 cryptocurrencies with a total market capitalization of over $200 billion USD.
CoinMarketCap statistics are updated every five minutes. The market capitalization of a given cryptocurrency is calculated by multiplying price by total supply. Prices are determined by averaging prices on major exchanges weighted by volume. Coins with stale data points (more than 6 hours old) are shown at the bottom of the list with question marks and are delisted after 7 days.
In May 2018, CoinMarketCap launched their mobile application. Along with providing cryptocurrency market informationation, CoinMarketCap started maintaining a blog in July 2018 that provides analysis, trends, interviews and more on cryptocurrencies and blockchain as well as company updates.