The statistics are updated every 5 minutes. Market capitalization is calculated by multiplying price by total supply. Prices are calculated by averaging the prices at the major exchanges weighted by volume.
Coins with stale datapoints (more than 6 hours old) are shown at the bottom of the list with question marks, and are de-listed after 7 days.
Cryptocurrencies can only be purchased on exchanges, that can be both, decentralized or centralized in nature. However, since no exchange is superior to the other, a fair price of a cryptocurrency is the average price it is traded on a range of exchanges. Coinmarketcap is calculating that average price.
As of April 2018 there are more than 1,500 cryptocurrencies listed on Coinmarketcap. Coinmarketcap provides the current price, the market capitalization and volume data for every cryptocurrency, as well as historical data and charts. As of early 2018 the site has well beyond 100 million monthly page visits.
Addition of new coins
For a coin to be added it must meet following criteria:
- It must be a cryptocurrency
- It must be traded on a public exchange that is older than 30 days and with an API available.
- It must have a public URL that displays the total supply (total coins mined so far).
The service has official applications for iOS and Android platforms for easy access.
iOS App: https://itunes.apple.com/ru/app/coinmarketcap-crypto-prices/id1252526626?mt=8
Android App: https://play.google.com/store/apps/details?id=com.kyriakosalexandrou.coinmarketcap&hl=ru
On top of current data, Coinmarketcap provides data for historical snapshots and overall market data about the total market capitalization of all cryptocurrencies and the dominance of individual cryptocurrencies such as Bitcoin.
Coinmarketcap provides its own API for developers, that can be used for operating with price data in other applications or for embedding widgets.
Bitcoin price is available on Coinmarketcap. Other websites are able to use this widget powered by Coinmarketcap to improve their content. Bitcoin Coinmarketcap: