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What is Crypto currency

Cryptocurrencies let you buy goods and services, or trade them for profit. Here's more about what cryptocurrency is, how to buy it and how to protect yourself.James Royal, Ph.D., Kevin VoigtFebruary 25, 2021Cryptocurrency for Beginners: 7 Things You Need to KnowMany or all of the products featured here are from our partners who compensate us. This may influence which products we write about and where and how the product appears on a page. However, this does not influence our evaluations. Our opinions are our own. Here is a list of our partners and here's how we make money.What’s inside1. What is cryptocurrency?2. How many cryptocurrencies are there? What are they worth?Best cryptocurrencies by market capitalizationSHOW MOREThis article provides information and education for investors. NerdWallet does not offer advisory or brokerage services, nor does it recommend or advise investors to buy or sell particular stocks or securities.A cryptocurrency (or “crypto”) is a digital currency that can be used to buy goods and services, but uses an online ledger with strong cryptography to secure online transactions. Much of the interest in these unregulated currencies is to trade for profit, with speculators at times driving prices skyward.Here are seven things to ask about cryptocurrency, and what to watch out for.1. What is cryptocurrency?Cryptocurrency is a form of payment that can be exchanged online for goods and services. Many companies have issued their own currencies, often called tokens, and these can be traded specifically for the good or service that the company provides. Think of them as you would arcade tokens or casino chips. You’ll need to exchange real currency for the cryptocurrency to access the good or service.Cryptocurrencies work using a technology called blockchain. Blockchain is a decentralized technology spread across many computers that manages and records transactions. Part of the appeal of this technology is its security.Back to top2. How many cryptocurrencies are there? What are they worth?More than 6,700 different cryptocurrencies are traded publicly, according to CoinMarketCap.com, a market research website. And cryptocurrencies continue to proliferate, raising money through initial coin offerings, or ICOs. The total value of all cryptocurrencies on Feb. 18, 2021, was more than $1.6 trillion, according to CoinMarketCap, and the total value of all bitcoins, the most popular digital currency, was pegged at about $969.6billion. (You can check the current price to buy Bitcoin here.)Best cryptocurrencies by market capitalizationThese are the 10 largest trading cryptocurrencies by market capitalization as tracked by CoinMarketCap, a cryptocurrency data and analytics provider.CryptocurrencyMarket CapitalizationBitcoin$969.6 billionEthereum$222.3 billionTether$33.1 billionBinance Coin$30.5 billionCardano$28.3 billionPolkadot$28.1 billionXRP$24.4 billionLitecoin$15 billionChainlink$13.3 billionBitcoin Cash$13.1 billionData current as of Feb. 18, 2021.» Learn more: How to invest in BitcoinBack to top3. Why are cryptocurrencies so popular?Cryptocurrencies appeal to their supporters for a variety of reasons. Here are some of the most popular:Supporters see cryptocurrencies such as Bitcoin as the currency of the future and are racing to buy them now, presumably before they become more valuableSome supporters like the fact that cryptocurrency removes central banks from managing the money supply, since over time these banks tend to reduce the value of money via inflationOther supporters like the technology behind cryptocurrencies, the blockchain, because it’s a decentralized processing and recording system and can be more secure than traditional payment systemsSome speculators like cryptocurrencies because they’re going up in value and have no interest in the currencies’ long-term acceptance as a way to move moneyBack to top4. Are cryptocurrencies a good investment?Cryptocurrencies may go up in value, but many investors see them as mere speculations, not real investments. The reason? Just like real currencies, cryptocurrencies generate no cash flow, so for you to profit, someone has to pay more for the currency than you did.That’s what’s called “the greater fool” theory of investment. Contrast that to a well-managed business, which increases its value over time by growing the profitability and cash flow of the operation.“For those who see cryptocurrencies such as bitcoin as the currency of the future, it should be noted that a currency needs stability.”As NerdWallet writers have noted, cryptocurrencies such as Bitcoin may not be that safe, and some notable voices in the investment community have advised would-be investors to steer clear of them. Of particular note, legendary investor Warren Buffett compared Bitcoin to paper checks: “It's a very effective way of transmitting money and you can do it anonymously and all that. A check is a way of transmitting money too. Are checks worth a whole lot of money? Just because they can transmit money?"For those who see cryptocurrencies such as Bitcoin as the currency of the future, it should be noted that a currency needs stability so that merchants and consumers can determine what a fair price is for goods. Bitcoin and other cryptocurrencies have been anything but stable through much of their history. For example, while Bitcoin traded at close to $20,000 in December 2017, its value then dropped to as low as about $3,200 a year later. By December 2020, it was trading at record levels again.This price volatility creates a conundrum. If bitcoins might be worth a lot more in the future, people are less likely to spend and circulate them today, making them less viable as a currency. Why spend a bitcoin when it could be worth three times the value next year?Back to top5. How do I buy cryptocurrency?While some cryptocurrencies, including Bitcoin, are available for purchase with U.S. dollars, others require that you pay with bitcoins or another cryptocurrency.To buy cryptocurrencies, you’ll need a “wallet,” an online app that can hold your currency. Generally, you create an account on an exchange, and then you can transfer real money to buy cryptocurrencies such as Bitcoin or Ethereum. Here's more on how to invest in Bitcoin.Coinbase is one popular cryptocurrency trading exchange where you can create both a wallet and buy and sell Bitcoin and other cryptocurrencies. Also, a growing number of online brokers offer cryptocurrencies, such as eToro, Tradestation and Sofi Active Investing. Robinhood offers free cryptocurrency trades (Robinhood Crypto is available in most, but not all, U.S. states).Back to top6. Are cryptocurrencies legal?There’s no question that they’re legal in the United States, though China has essentially banned their use, and ultimately whether they’re legal depends on each individual country. Also be sure to consider how to protect yourself from fraudsters who see cryptocurrencies as an opportunity to bilk investors. As always, buyer beware.Back to top7. How do I protect myself?If you’re looking to buy a cryptocurrency in an ICO, read the fine print in the company’s prospectus for this information:Who owns the company? An identifiable and well-known owner is a positive sign.Are there other major investors who are investing in it? It’s a good sign if other well-known investors want a piece of the currency.Will you own a stake in the company or just currency or tokens? This distinction is important. Owning a stake means you get to participate in its earnings (you’re an owner), while buying tokens simply means you're entitled to use them, like chips in a casino.Is the currency already developed, or is the company looking to raise money to develop it? The further along the product, the less risky it is.It can take a lot of work to comb through a prospectus; the more detail it has, the better your chances it’s legitimate. But even legitimacy doesn’t mean the currency will succeed. That’s an entirely separate question, and that requires a lot of market savvy.But beyond those concerns, just having cryptocurrency exposes you to the risk of theft, as hackers try to penetrate the computer networks that maintain your assets. One high-profile exchange declared bankruptcy in 2014 after hackers stole hundreds of millions of dollars in bitcoins. Those aren’t typical risks for investing in stocks and funds on major U.S. exchanges.Should you buy cryptocurrency?Cryptocurrency is an incredibly speculative and volatile buy. Stock trading of established companies is generally less risky than investing in cryptocurrencies such as Bitcoin.Back to topWhat online brokers offer cryptocurrencies?Of the online brokerages and cryptocurrency exchanges that NerdWallet reviews, the following current offer cryptocurrencies.Available for:Learn moreCoinbaseAccess to buy and sell

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