Bitcoin is the oldest and most popular cryptocurrency

Bitcoin explained and made simple

Bitcoin, the most popular and well-known example of a cryptocurrency, came on the scene around 2010, with its evangelists proclaiming it would eventually displace government-backed traditional cash. While the concept of a digital currency may seem straightforward, the details can be deceptively simple. This quick video overview provides the foundation for a deeper dive into the world of decentralized currency.

Bitcoin and ethereum are decentralized cryptocurrencies with different functions

Bitcoin, launched in 2009, is primarily a digital currency and store of value with a fixed supply. Ethereum, introduced in 2015, enables smart contracts and decentralized apps, offering more flexibility.

Many bitcoin enthusiasts have compared the cryptocurrency to digital gold

Gold is valued for its stability and reliability, serving as a hedge against inflation and economic uncertainty. Bitcoin shares both of these characteristics, but also provides near-instant liquidity and isn’t subject to government regulation.

eCash paved the way for today’s popular crypto investments

Bitcoin is typically cited as the first decentralized cryptocurrency. But some argue that back in the 1990s, eCash was technically the first cryptocurrency, although it wasn't decentralized.

The 10 most important (other) cryptocurrencies

Bitcoin has not only been a trendsetter, ushering in a wave of cryptocurrencies built on a decentralized peer-to-peer network, but has also become the de facto standard for cryptocurrencies. But it's not the only one. Here are some cryptocurrencies that have held on throughout steep price climbs and nosedives.

Who accepts bitcoin payments in 2025?

Bitcoin and other cryptocurrencies are used primarily as stores of value or speculative assets, and less likely to be used to purchase goods and services. Advocates for the currency say as an increasing number of retailers accept bitcoin, average holders will begin to treat the currency more like traditional money.

Cryptocurrency acts as a store of value

Traditional money, dating back to its first known uses in ancient Babylonia, has many uses—it reduces friction in transactions by providing a common denominator of value (unit of account), acts as a single item accepted by many vendors (medium of exchange), and holds wealth as a store of value.

Cryptocurrencies are forms of digital currency

Cryptocurrency's key feature is decentralization. Unlike traditional money, they generally aren't controlled by a single authority. As of early 2025, cryptocurrencies had a cumulative market cap of almost $3.4T, making them worth more than some of the world's most valuable companies, like Google and Amazon (both valued at roughly $2.3T).

The benefits of cryptocurrency and blockchain technology

At the root of cryptocurrencies' allure is blockchain technology, an innovation bringing profound transformations to industries, especially the financial industry. This simple article breaks down the difference between cryptocurrencies and blockchain as well as the benefits of each.

Check the real-time price of bitcoin

Bitcoin has gone through several boom and bust cycles. Those peaks and valleys sit on top of a steadily rising value, growing as the currency gains wider adoption. As of 2024, bitcoin’s total market value was over $1.3T, with more than 19.6 million coins in circulation. Still, the value fluctuates.

Collaterized by crypto, BitUSD is considered the first stablecoin

It was created in 2014 with the intention of making cryptocurrency less volatile. While BitUSD lost its peg to the US dollar in 2018 and never recovered, Tether was created soon after it in 2014 and has had more longevity and success.

Bitcoin's founder has always remained anonymous

A pseudonym used by the person or group of people who created bitcoin—the first decentralized cryptocurrency—the real identity of Satoshi Nakamoto has baffled millions of enthusiasts for years.

Silk Road, the dark web's first widely used market, proved the real-world utility of bitcoin

Named after the ancient intercontinental trade network between China and the Roman Empire, the anonymous market was active from early 2011 to October 2013. Before it was shut down, approximately 10,000 products—70% of which were illegal and controlled prescription drugs—were bought and sold using the cryptocurrency.

Crypto ETFs are driving cryptocurrency adoption

In 2024, the SEC approved ETFs that track the price of bitcoin called spot bitcoin ETFs. These funds have since significantly increased investment inflows into cryptocurrency markets.

Dogecoin, the seminal memecoin that has no specific use

Dogecoin has ridden a wave of enthusiasm to become one of the most valuable cryptocurrencies. Created in 2013 by software engineers as a joke, the token has become the poster child for the viral and unpredictable nature of the cryptocurrency market, and has inspired tens of thousands of imitator coins.

Crypto exchanges are online platforms to buy, sell, and exchange cryptocurrencies

Crypto exchanges have grown alongside and fueled the boom in digital currencies. Popular exchanges like Coinbase, Kraken, and Binance each have separate features, fee structures, and more. You can learn how to begin with the platforms, how to carry out research, and when to be aware of the associated risks.

Cryptocurrency wallets for beginners

Cryptocurrency wallets come in many types. Here, we present the details, comparing the wallets’ features so that you can choose the best crypto wallet for your needs.

Two Papa John’s pizzas were the first real-world transaction involving cryptocurrency

In 2010, a programmer Laszlo Hanyecz made the first real-world transaction involving cryptocurrency—purchasing two Papa John’s pizzas for 10,000 bitcoins. While the transaction was lauded as a milestone for cryptocurrency, it has also become a tongue-in-cheek cautionary tale—the value of the purchase price exceeded $620M at bitcoin’s all-time high.

The US dollar is the most widely circulated currency in the world, and is involved in nearly 90% of global transactions

Memecoins are a type of cryptocurrency—a form of digital currency with a wide variety of uses—created around popular 'memes,' or viral internet jokes.

Bitcoin mining validates/adds bitcoin transactions onto the blockchain

Mining, done by a decentralized network of actors, is incredibly energy intensive, making the award of bitcoins a major incentive.

The British pound is the oldest currency still in use

Also known as the “pound sterling,” the British pound is more than 1,200 years old. It dates back to around 775 CE, but it didn’t become the official currency of England until the 12th century. One pound originally represented a pound of silver. The below graphic shows some of the other oldest currencies still in use today.

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

Charting the most popular email providers since 1997

The email is the most stable feature of the Internet; a rare digital product that changed little over the decades. Nonetheless, the major email service providers have vastly shifted. Watch this time-based chart which shows the number of users of the top 10 email providers since 1997, and see how totally nonexistent Gmail skyrockets to dominance by today.

The first US stock exchange dates back to the 1790s in Philadelphia

Only two years after that stock exchange in Philadelphia started, the largest stock exchange in the US to date was created: the New York Stock Exchange.

The US dollar is the most popular note to counterfeit

Counterfeit operations are often controlled by rogue governments, drug cartels, and more. These organized crime rings often sell counterfeit bills wholesale, for anywhere between 40 and 70 cents per dollar.

The dominant popularity of McDonald's french fries

McDonald's french fries are, by far, the most popular french fries available at fast food restaurants around the world. Since their beginnings, their consistent and unique flavor, crispiness, and shape formed a new staple side at restaurants. Despite undergoing drastic shifts in how they are made due to health and business factors, the fry has remained dominant in the fast food culinary world. Find out more about its history in this video.

Python is an interpreted programming language that is growing in popularity

Python is used for web and software development, task automation, machine learning, data science, and financial analysis due to its simplicity, readability, and versatility across various applications. It was named after the BBC TV show "Monty Python's Flying Circus."

Art theft is the third-largest source of criminal revenues worldwide, thanks in part to the subjective nature of valuing a work of art.

Warren Buffett's former professor Benjamin Graham is known as the 'father of value investing,' a strategy in which investors seek to buy stocks trading below their intrinsic worth.

Some coin denominations have ridges etched on their sides, partly to prevent counterfeiting, in a practice called 'reeding.'

After the Boston Tea Party, colonists switched to coffee, which became the main morning drink for revolutionaries.

The Nasdaq's 'Magnificent 7' companies are responsible for roughly 40% of the Nasdaq 100 index's gains, while the remaining 93 companies account for the other 60%.

A century of Billboard issues documenting the evolution of popular music.

'Silent' fireworks have gained more interest in recent years as a quieter celebratory option.

As of 2025, the most cited papers in science include a review of graphene, methods to improve image recognition, streamlining electron density calculations, and optimizing protein studies.

The name 'Silicon Valley' arose from the founding of Shockley Semiconductor Laboratory in Fairchild Semiconductor in 1956-57, founded near Stanford University in Palo Alto

This site reaches millions of visitors who are tired of AI chatbots and seeking human connection. Pretend to be an AI chatbot and ask questions, provide answers, and draw for people in real time.

The term 'algorithm' originated from the Latinized name of al-Khwārizmī, a 9th-century mathematician whose works introduced Arabic numerals and the decimal-based numeral system to Europe and whose treatise 'Al-Jabr' gave algebra its name.

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

How Amazon operates a 'flywheel' business model, a self-reinforcing cycle that drives continuous growth

Animal phobias are likely the most common type of phobias, followed by an extreme fear of heights.

Fast-casual restaurant Chili's is experiencing a resurgence, with its parent company recently reporting a nearly 32% increase in sales, thanks to passionate Gen Z fans on TikTok.

Most of the observable universe's volume consists of voids and supervoids—enormous regions of space with little to no galaxies, stars, or light.

In 2026, Finland was named the world's happiest country for the ninth consecutive year based on its wealth, social safety network, and high life expectancy, among other factors.

The first horror movie is believed to be George Méliès' 1986 short 'The Haunted Castle,' which pioneered the use of special effects

The hormonal disorder PCOS was renamed PMOS in 2026, a move designed to improve care and research by shifting the focus to the hormonal causes of this condition that affects 1 in 8 women.

Iran's Revolutionary Guard Corps is independent of Iran's regular army and is one of the most powerful and influential military-political organizations in the Middle East.

Chaos theory—informally known as the butterfly effect—is the reason why weather forecasts are presented with probabilities rather than certainties.

See a 3D reconstruction of Tenochtitlan, the Aztec capital that was home to an estimated population of 200,000 to 400,000.