Bitcoin and ethereum are decentralized cryptocurrencies with different functions

Ethereum is a blockchain-powered platform for building decentralized software and apps

Among crypto enthusiasts, ethereum is known for the cryptocurrency it uses to facilitate transactions: ether, or ETH. It's often compared to an app store. The underpinnings of ethereum's blockchain include dApps, which operate using automated scripts called "smart contracts."

The similarities and differences between bitcoin and ethereum

Ethereum is the second-largest cryptocurrency by market cap behind Bitcoin. Usually, that comparison just scratches the surface of the overall market cap. Instead, a visual pits the tokens up against each other on a per-token basis and shows how and why the Ethereum/bitcoin ratio has fluctuated over time.

Ethereum is a blockchain-powered operating system known for its cryptocurrency, ether

Ethereum's underlying blockchain allows developers to build decentralized applications (dApps) that leverage smart contracts to seamlessly run decentralized financial tools (crypto wallets, exchanges, marketplaces, and more), along with Web3 concepts like non-fungible tokens.

Bitcoin, the oldest and most popular cryptocurrency, is a digital cash alternative introduced in 2009 that rapidly grew in popularity and now boasts a global user base.

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.

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).

Top Ethereum dApps

Thousands of decentralized apps (dApps) run on Ethereum, including marketplaces, financial platforms, and social networks. Top apps include Uniswap, a decentralized exchange for buying and selling cryptocurrency, and OpenSea, the biggest marketplace for buying and selling non-fungible tokens (NFTs). New apps are built on Ethereum all the time, facilitating billions of dollars worth of transactions. Explore the biggest ones here.

Decentralized applications are blockchain-based and run without a central authority

These apps use smart contracts to automatically execute functions, ensuring security, transparency, and censorship resistance. Built on platforms like Ethereum, Solana, and Binance Smart Chain, DApps power DeFi, NFTs, gaming, and social media, offering users control over their data and assets.

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.

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.

Vitalik Buterin’s current thoughts on Ethereum

Vitalik Buterin isn’t just the founder of Ethereum—he’s also a blogger. In this blog post from late last year, Buterin discusses some of his favorite applications built on Ethereum: prediction markets like Polymarket, where users can bet crypto on the outcome of events like elections. Buterin argues that prediction markets also act as news sites for non-bettors, opening the floodgates for many different kinds of info-based apps on Ethereum. Read the post here.

Watch an expert explain blockchain technology to five different people: a child, a teen, a college student, a grad student, and a fellow expert.

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.

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.

Using cryptocurrency to turn traditional financial arrangements on their head

Cryptocurrency is poised to drastically change everything in the financial world, including financial arrangements. Decentralized finance makes it easier for virtually anyone to take advantage of financial markets without the need for a bank. However, there are new risks involved as well. Professor of Legal Studies and Business Ethics Kevin Werbach, an expert on Bitcoin and blockchains discusses it all in detail in The Conversation.

Ethereum Classic and the Ethereum hard fork

One year after its launch, Ethereum was forked into two blockchains as a workaround to return funds stolen in a major hack to users. To this day, Ethereum Classic operates separately from Ethereum, and the two blockchains have different goals. Because of this split, investors must be cautious and ensure they’re interacting with the correct blockchain. Funds can’t simply be transferred from one to the other. Learn more here.

A definitive guide to crypto and blockchain

The concept of cryptocurrency emerged more than a decade ago, with a famous whitepaper on bitcoin. To fully understand the rise of bitcoin, Bloomberg’s Matt Levine developed this comprehensive four-part series exploring the broader crypto and blockchain ecosystems, where they came from and how they work (subscription required).

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.

A visual guide to how bitcoin transactions work and rely on cryptography

The "crypto-" in cryptocurrencies like bitcoin refers to the mathematical functions that generate pairs of public and private keys and encrypt data in blocks. When combined, these systems secure transactions on the network, verify digital asset and token transfers, and contribute to end-user anonymity.

What are smart contracts?

Smart contracts are potentially one of the most useful tools associated with blockchain, and they can enable the transfer of everything from Bitcoin and fiat currency to goods transported around the world. Here’s what they do and why they’re likely to gain traction.

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.

Learn about Web3 and how it differs from past versions of the internet

Web3 is the idea of a new, decentralized internet built on blockchain technology. It aims to shift control from centralized entities like big tech companies to users through distributed ledgers and smart contracts. Key components include cryptocurrencies, NFTs, and decentralized autonomous organizations (DAOs) that operate without a central authority. Web3 promises more user privacy, ownership, and control over data and digital assets.

Crypto's origins date back to 1983

While crypto feels new, it actually dates to 1983, with eCash's creation. However, a lot has happened in the crypto world over the past few years in particular—crypto's market cap surpassed $2T for the first time in 2021, for instance. A timeline of crypto's history details the events in between.

The different types of stablecoins include algorithmic stablecoins

In addition to fiat-backed stablecoins, commodity-backed stablecoins, and cryptocurrency-backed stablecoins, algorithmic stablecoins use smart contract-based mechanisms to maintain a stable value by responding to supply and demand.

A simple visual explanation of how blockchains work

Blockchains are decentralized, distributed, and digital methods to record transactions and prevent alterations and tampering of the record. That's a simplified definition. This easy-to-understand six-minute video further and better explains what blockchains are and how they work using colorful illustrations and clear, concise clarifications on their processes and what makes them so special.

Only 21 million bitcoin will ever be created—what happens then?

Bitcoin is a popular cryptocurrency with a finite supply, and the issuance of new bitcoins is currently offered as a reward for verifying the transactions on the blockchain. Experts say the currency won't reach its limit until the year 2140, and miners may ultimately rely on transaction fees.

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.

The Ethereum Foundation’s latest report

The Ethereum Foundation is a nonprofit organization supporting Ethereum in several ways. These include providing grants to developers who want to build on the blockchain, and hosting events promoting crypto’s future, like Devcon. This annual report grants a peek into the nonprofit’s role in Ethereum's operations and the values it seeks to support through its work. The nonprofit’s frontline involvement is another differentiating factor between Ethereum and other cryptocurrencies.

An up-to-date, complete ranking of coins by market cap and their current value

As of this writing, the top three cryptocurrencies ranked by market cap are Bitcoin, Ethereum, and XRP, in that order. Dogecoin, the first-ever "memecoin," was created as a joke in 2013, and it's now the ninth-most valuable form of cryptocurrency in the world.

The biggest NFT projects that live on Ethereum include Bored Apes

Non-fungible tokens are primarily built on the Ethereum blockchain, though other blockchains host the tokens. NFT projects hosted on Ethereum include Bored Apes and plots of land in Decentraland.

The industries ripe for disruption by blockchain and cryptocurrencies

Blockchain—what is it good for? Lots of things, it would seem. Peruse this guide from The Motley Fool site and learn about different applications and use cases for blockchain technology. Financial exchanges, real estate, insurance, voting, an gambling are just a few of the 15 applications discussed here.

Ethereum’s biggest risks and top criticisms

As it evolves, critics say Ethereum’s constant changes make the platform overly complex and fundamentally less secure. They also say the Ethereum Foundation and a handful of developers wield too much control over the crypto platform, and that gas fees are prohibitively expensive. Some criticisms are addressed in Ethereum’s roadmap, but others strike at the crypto platform’s core. Go deeper on why here.

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.

The blockchain offers tantalizing possibilities for future use

Think of blockchains as a running list of information, where new details are added to the running chain as discrete "blocks." With crypto, the information contained within each block could be virtually anything, providing flexibility for uses in commerce, legal filings, healthcare records, and more.

Memecoins are cryptocurrency created around popular 'memes,' or viral internet jokes

Dogecoin is perhaps the most famous "memecoin." While they tend to be more volatile than other types of crypto (after all, they're often created due to ephemeral trends), that doesn't mean they can't be valuable: Dogecoin is currently one of the most valuable cryptocurrencies in the world.

Some argue that stablecoins are unnecessary due to the ubiquity of the US dollar

Others have criticized fiat-backed stablecoins for their lack of decentralization, believing that digital currencies not controlled by central banks will become more popular in the future.

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.

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

See how the concept of verification and addition to the blockchain works in real time.

Every transaction made via bitcoin is recorded on its blockchain—the decentralized, distributed ledger that provides a permanent and transparent record of the currency's entire history. While that may sound abstract, the technology allows anyone to monitor and confirm each of the transactions.

Vitalik Buterin explains ethereum in 30 minutes

Every year, ethereum creator Vitalik Buterin explains what his crypto platform is in a 30-minute presentation at the Ethereum Foundation’s event, Devcon. Buterin’s explanation goes deeper than a simple 101 explanation. To learn more about the current state of ethereum, what’s changed recently, and what Buterin expects down the road, watch this video.

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.

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.

DAI is a popular stablecoin backed by cryptocurrency rather than fiat currency

DAI is backed by collateralized debt denominated in several major cryptocurrencies, including ethereum's ether. It was created by Rune Christensen in 2017 with the goal of helping create a credit system that would allow users to take out loans collateralized by cryptocurrencies.

Since its introduction, the price of bitcoin has experienced significant volatility

Driven in large part by speculation and intense social media attention during the pandemic, along with the availability of capital during near-zero interest rate periods, the price has seen at least three major crashes despite steadily increasing over the long run since 2014.

NFTs can be used for fractionalized ownership of assets

Non-fungible token is a term used to describe a unique digital asset whose ownership is tracked on a blockchain, such as Ethereum.

Some venture capitalists believe cryptocurrency will revolutionize global finance

Some of the brightest minds at Andreesen-Horowitz, one of the country’s leading venture capital firms, believe the cryptocurrency ecosystem will revolutionize global finance in the coming decades. This podcast recounts, through their view, the history of crypto, how it works, and trends they see emerging in the future.

Proof-of-work is the original way cryptocurrencies added new blocks to blockchains

It’s a competitive method requiring “miners” to solve cryptographic puzzles, often using equipment that consumes massive amounts of energy. Ethereum switched to proof-of-stake, a less energy-intensive method in which “validators” stake crypto to be randomly chosen to check transactions.

Ethereum Founder Vitalik Buterin was surprised by the emergence of NFTs

Scams have pervaded the NFT space and made critics question their legitimacy, but proponents believe their use cases could one day extend to real estate and credit scores.

A look at nodes and miners in managing bitcoin transactions

Each time a transaction involving bitcoin is carried out, the information must be relayed and recorded onto the currency’s blockchain. Multiple steps are involved, including the passage of the transaction to various nodes and miners who comprise multiple layers of verification and validation. See an illustrated guide to how these two crucial features of bitcoin processing work here.