Currently, there are thousands of different types of digital money in the world, most commonly Bitcoin. There are also other digital money types like Ethereum (ETH), Ripple (XRP), Litecoin (LTC), Monero (XMR), Ethereum Classic (ETC). is a matter of controversy. Some countries have accepted electronic money as a means of payment. While in some other countries, this currency has not been identified and recognized, even prohibited for fear of risk. To date, electronic money has been legalized in some areas such as the European Union, Japan, Germany, Switzerland or many leading companies such as Dell, Microsoft, Apple ... and are traded on many field. So far, the currencies have had little or no other advantage