in addition to bitcoins, there are about a thousand types of other digital money. How they work and how much they cost? According to CoinMarketCap - Forbes, in the world of cryptocurrencies today there are more than 1,100 types of digital money. And the total capitalization of this market is $ 133 billion. DW has collected facts about the most popular types of cryptocurrencies and about which of them, in addition to bitcoin, most often invest. Altcoins are an alternative to bitcoins. Most altcoins (alternative digital currencies) are just a variation of bitcoin.