What Is Cryptocurrency? Basics of Bitcoin & Blockchain Technology (2024)

How do you buy and sell bitcoin or any other cryptocurrency? Learn the basics of bitcoin, blockchain technology, and any risks before jumping in to the cryptocurrency pool.

By Bruce Blyth January 19, 2022 4 min read

What Is Cryptocurrency? Basics of Bitcoin & Blockchain Technology (1)

4 min read

Photo by Getty Images

Key Takeaways

  • Bitcoin and other cryptocurrencies are gaining more attention as digital payment systems
  • Cryptocurrencies are risky in part because they’re not regulated by the U.S. Securities and Exchange Commission (SEC) and prices can swing sharply
  • Before buying bitcoin or other cryptocurrencies, investors should study these markets and understand the unique risks

Thinking about jumping into the cryptocurrency pool? How and whether to buy bitcoin or other cryptocurrencies are questions many investors have pondered as crypto markets—and the blockchain technology underlying digital currencies—increasingly moves into the mainstream.

Learning how to buy and sell bitcoin doesn’t take just any old investor education effort, and bitcoin and other cryptocurrencies aren’t just any old asset class. Investors who are interested in cryptocurrency should get familiar with a few questions considering recent growth in crypto markets, wide price fluctuations, and the absence of hard rules and regulations governing these instruments.

Before trading or investing in bitcoin, ethereum, or other cryptocurrencies, make sure you understand what you’re getting into and the wide array of choices. Let’s look at a few basic questions.

Before exploring the topic, it’s important to note that as of March 2021, bitcoin futures are the only cryptocurrency product available to qualified TDAmeritrade clients on the thinkorswim®platform, and not all clients will qualify to trade them.Visit the Bitcoin Futures pagefor more information.

What Is Cryptocurrency?

Cryptocurrencies, also referred to as coins, are virtual currencies secured through one-way cryptography. Many are based on public blockchain technology, a distributed ledger of all transactions that’s decentralized and can’t be changed under most circ*mstances. Unlike traditional currencies, such as the U.S. dollar, they’re not controlled by any central government or authority.

As of March 2021, there were more than 4,000 cryptocurrencies and tokens worldwide, according to CoinMarketCap. Bitcoin leads the list as one of the most actively traded cryptocurrencies, currently sporting an overall market cap of more than $1 trillion. (In March 2021, bitcoin soared to a record above $60,000, which is triple its level at the end of 2020.) Other popular cryptocurrencies include ethereum, tether, and litecoin.

What Is a “Smart Contract” and How Do They Work?

Bitcoin and others like it are considered by many to be alternative payment mechanisms; yet, they’re also highly speculative and subject to sharp daily price swings.

In contrast, other cryptos (like ethereum) are designed to facilitate transfer of ownership through so-called smart contracts, in which a token is attached to, and thus verifies, legal documents and other agreements.

Ethereum proponents aim to replace internet third parties and see the currency as a “world computer” that decentralizes, and some would argue democratizes, existing client-server models, according to CoinDesk, Inc., a digital publisher devoted to the crypto and blockchain community.

How and Where Do People Buy and Sell Bitcoin?

There are several thousand digital or online platforms on which you can buy and sell bitcoin and other cryptocurrencies. You can buy bitcoin with a credit card or through an online payment system, and you can sell bitcoin for cash. Top exchanges for trading bitcoin include Binance, Huobi Global, BitZ, Upbit, and Bybit, according to CoinMarketCap.

To trade on these exchanges, you typically need to set up a “wallet” (similar to an account) where you store your cryptocurrency. Payment options include credit and debit cards, wire transfers, and hard cash.

But whichever exchange or method investors may choose for buying and selling crypto, they should proceed with caution, according to market professionals. It’s a good idea to know where an exchange is based, how long it’s been around, and what kind of security it has in place.

There are a few ways to gain exposure to bitcoin without owning the actual cryptocurrency. Some traditional, established exchanges, including Chicago-based CME Group (CME), offer futures contracts linked to bitcoin (/BTC).

Bitcoin’s recent rally has led to some clamoring for cryptocurrency-based exchange-traded funds (ETFs), which U.S. regulators, as of November 2021, had yet to approve. (Earlier in 2021, regulators in Canada approved North America’s first bitcoin ETF).

What About the Risks of Cryptocurrencies?

There are many cryptocurrency risks, and authorities are still getting regulatory infrastructure in place for cryptocurrencies. Nothing exists yet to back you up, like the Federal Deposit Insurance Corporation does for U.S. bank customers. That means investors are entirely responsible for the security of any cryptocurrency holdings.

The SEC has noted that with cryptocurrencies, there is “substantially less investor protection than in our traditional securities markets, with correspondingly greater opportunities for fraud and manipulation.”

Additionally, cryptocurrency prices and prices for any related securities can be very volatile. Considering the possibility that the entire value of a cryptocurrency investment could disappear, investors who don’t think they could handle the market swings might want to steer clear.

What’s Happening with Blockchain?

Bitcoin and other cryptocurrencies grab many financial media headlines, but it’s the underlying technology, blockchain, that may hold the most longer-term possible benefitfor businesses and consumers, according to some third-party analysts.

Many banks and other financial services companies have invested in blockchain, seeking ways distributed ledger technology could reduce costs or improve efficiency. Funding for blockchain-based companies jumped 79% in 2020, according to CryptoPotato. In 2019, blockchain startup investments totaled $3.08 billion globally, according to CB Information Services.

Ultimately, bitcoin and other cryptocurrencies, plus the underlying blockchain, are like a lot of new tech-driven innovations—tremendous potential but also tremendous risks. Investors considering cryptocurrencies would be wise to proceed with caution and study these markets carefully before taking any positions. The buck, whether digital or paper, stops with you.

Carefully consider whether trading in bitcoin futures is appropriate for you in light of your experience, objectives, financial resources, and other relevant circ*mstances. For additional information, read more about the basics of bitcoin and other cryptocurrencies, and check the TDAmeritrade Bitcoin Futures page.

Virtual currencies including bitcoin are very speculative, experience significant price volatility, and are not suitable for all investors. Fluctuations in the underlying virtual currency’s value between the time you place a trade for a virtual currency futures contract and the time you attempt to liquidate it will affect the value of your futures contract and the potential profit and losses related to it. Be very cautious and monitor any investment that you make. Like all futures products, speculating in these markets should be considered a high-risk transaction. Investors must have the financial ability, sophistication/experience and willingness to bear the risks of an investment, and a potential total loss of their investment.

Carefully consider the investment objectives, risks, charges and expenses before investing in any ETF. A prospectus, obtained by calling 800-669-3900, contains this and other important information about an investment company. Read carefully before investing.

What Is Cryptocurrency? Basics of Bitcoin & Blockchain Technology (2024)

FAQs

What Is Cryptocurrency? Basics of Bitcoin & Blockchain Technology? ›

Cryptocurrency sometimes called crypto-currency or crypto, refers to digital or virtual currency that utilizes cryptographic techniques for secure transactions. It exists solely in electronic form, independent of any central authority, and operates on decentralized networks, such as blockchain technology.

What is the basics of cryptocurrency and blockchain? ›

Cryptocurrencies like Bitcoin and Ethereum are powered by a technology called the blockchain. At its most basic, a blockchain is a list of transactions that anyone can view and verify. The Bitcoin blockchain, for example, contains a record of every time someone sent or received bitcoin.

What is the basic explanation of bitcoin and blockchain technology? ›

Bitcoin- Bitcoin is a decentralized digital currency, often referred to as a cryptocurrency. It exists on a decentralized network of computers, often called a blockchain, that keeps track of all transactions made using the currency.

What is the basics of blockchain technology? ›

A blockchain is a decentralized, distributed and public digital ledger that is used to record transactions across many computers so that the record cannot be altered retroactively without the alteration of all subsequent blocks and the consensus of the network.

What is bitcoin and blockchain for beginners? ›

Bitcoin is a decentralized digital currency that can be sent from user to user on the peer-to-peer bitcoin network without the need for intermediaries. Transactions are verified by network nodes through cryptography and recorded in a public dispersed ledger called a blockchain.

Can you make $100 a day with crypto? ›

Can you earn $100 a day trading cryptocurrency? Absolutely! If you're new to crypto day trading, here's what you need to know to make money. The most effective way to make $100 a day with cryptocurrency is to invest approximately $1000 and monitor a 10% increase on a single pair.

How do you explain cryptocurrency to a beginner? ›

Cryptocurrency is digital money that doesn't require a bank or financial institution to verify transactions and can be used for purchases or as an investment. Transactions are then verified and recorded on a blockchain, an unchangeable ledger that tracks and records assets and trades.

How do you explain Bitcoin for dummies? ›

How does Bitcoin work? Each Bitcoin is a digital asset that can be stored at a cryptocurrency exchange or in a digital wallet. Each individual coin represents the value of Bitcoin's current price, but you can also own partial shares of each coin.

Is crypto a good investment? ›

Most financial experts recommend limiting crypto exposure to less than 5% of your total portfolio. Crypto is considered a high-risk asset class. Limiting allocation helps manage overall volatility and risk. Those new to crypto investing may start with 1% to 2% as an introduction.

Which is better, crypto or Bitcoin? ›

Bitcoin's use as a store of value is well-established, and it continues to get easier to use it as a medium of exchange, too. Crypto is riskier to invest in than Bitcoin because it is difficult for an investor to accurately assess the risk associated with code from a highly complex and opaque system.

How do you explain blockchain to dummies? ›

'Blockchain' is a compound word– here the 'blocks' are the records of data, and the 'chains' are the links each record has with each other. It's a democratizing technology, in that it makes everyone equally accountable and equally in control (at least in the case of public blockchains– but more on that later).

Where is blockchain used in real life? ›

Insurance Settlements. Blockchain-based applications can eliminate the risk of fraud while speeding reimbursem*nt for losses in the insurance industry. Immutable records of property value, claims, and reimbursem*nts bring much-needed visibility to the insurance industry.

What is the blockchain in simple terms? ›

Blockchain is an immutable digital ledger that enables secure transactions across a peer-to-peer network. It records, stores and verifies data using decentralized techniques to eliminate the need for third parties, like banks or governments. Every transaction is recorded, then stored in a block on the blockchain.

What happens if you invest $100 in Bitcoin today? ›

Investing $100 in Bitcoin alone is not likely to make you wealthy. The price of Bitcoin is highly volatile and can fluctuate significantly in short periods. While it is possible to see significant returns in a short time, it is also possible to lose a substantial amount just as quickly.

How does Bitcoin make you money? ›

How Does Bitcoin Make Money? Miners on the Bitcoin network can be rewarded by successfully opening blocks. Bitcoins are exchangeable for fiat currency via cryptocurrency exchanges. Investors and speculators can make money from trading bitcoins.

How much money should I start with Bitcoin? ›

Some experts recommend investing no more than 1% to 5% of your net worth. When looking at how much of your portfolio to invest in crypto, limiting your overall exposure to crypto is crucial. It's important to never invest more than you can afford to lose.

What is blockchain in cryptocurrency in simple words? ›

Blockchain is a shared immutable ledger that facilitates the process of recording transactions and tracking assets across a business network. Anything of value can be tracked and traded on the Blockchain network. A Blockchain is a distributed database, which is shared over a computer network.

What is the best explanation of crypto and blockchain? ›

Cryptocurrency is a medium of exchange, created and stored electronically on the blockchain, using cryptographic techniques to verify the transfer of funds and an algorithm to control the creation of monetary units.

How do I learn about blockchain and cryptocurrency? ›

A career in blockchain technology may begin after completing a bachelor's or master's degree program in computer science, data science, or other relevant field. A coding, data science, or financial technology boot camp can also prepare learners for the field.

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