Currency Currency is money issued by the government and is traded within the economic system, and it is paper currencies or coins, and each country has its own currency, for example, the official currency in the United States of America is the US dollar and the official currency in the state of Kuwait is the Kuwaiti dinar With the exception of the euro area, which uses its single currency in most of the eurozone countries, and the only one that has the right to issue money for circulation is the central bank, and there are countries such as El Salvador and Ecuador announced that foreign currency is legal currency, as they use the US dollar as legal tender within the country, and there are unrelated currencies. In any country, digital currencies or cryptocurrencies that have several other designations, and their exchange rate varies widely within a short period of time [1], which is the subject of this article. The definition of digital currencies is a currency that is available in digital or electronic form only and is not physically "intangible" and is processed using computers or electronic wallets, while actual currencies are tangible and transactions are possible only by their holders. Digital currencies can be used to buy goods and pay for services, Its use can be restricted between certain online communities such as gaming and gambling sites and social networks, and it also contains all the essential physical currency characteristics, and allows instant transactions to execute payments that are seamlessly executed across borders when connected to supported networks, for example a person can An American is to pay his payments in digital currencies to a remote party residing in Singapore on the condition that both are connected to the same network required for transactions in digital currencies, and one of the advantages of digital currencies is that payments are made directly between the parties without the need for intermediaries, as for the difference and multiplicity of designations between digital currencies, virtual currencies and cryptocurrencies Digital currencies can be considered a comprehensive group that includes virtual currencies and cryptocurrencies [2 ], And in a later article, we will discuss the difference between electronic currencies and learning about the CBDC. Types of digital currencies money is no longer limited to currencies, bills and credit cards only, there is money that no government owns and it is decentralized and these funds are completely available on the Internet and this type of money is called the cryptocurrency and the most famous of these currencies is the Bitcoin currency, which has already been explained by more than An article on this site is so we will learn about other types of these currencies, including [3]: Ethereum: Most developers use it to pay for helping each other to build applications, instead of competing with Bitcoin, Ethereum is based on Bitcoin supplement, Ethereum is used to create dedicated crowdfunding platforms . Litecoin: Unlike Bitcoin Gold, Litecoin is a silver currency, the Litecoin wallet can be downloaded from the official website of Litecoin and it is completely encrypted and useful for people who need to transfer small amounts quickly because it is faster and easier to transfer from one person to another due to its new generation. Ripple: Unlike other currencies that avoid banks, Ripple embraces it and was made for banks due to the speed and low cost of global payments, as the bank transfer process is done by Ripple from a customer in one country to another within minutes. Dash: The idea of Dash as an alternative to PayPal is made for marketing. Many merchants accept this currency as well as the US dollar. Dash currency can be purchased using a government-regulated currency. Zcash: One of the advantages of this currency is to increase secrecy to the maximum of its ability to protect the identities of all senders and recipients so that every transaction is fully encrypted as it enables users to use the benefits of the public blockchain without providing private information. Monero: Another excellent option for those who care about their privacy, this currency is designed to give users complete control over their money, in other words that the user is the bank himself because he decides who can and who cannot see where his money is going. The impact of digital currencies on global markets Some experts fear that the collapse of the cryptocurrency may lead to a global economic crisis similar to mortgage-backed securities that led to a global economic crisis, and far from the experts ’concern, these currencies have many benefits such as controlling inflation and transactions. Non-frictional, and from other perspectives, many investors see that these currencies are a means of speculation or hedge against inflation