Ethereum: What You Should Know Before You Invest

Note (September 2026): Earlier versions of this page said Ethereum was conceived in 2015, called XRP an Ethereum token and described “Ethereum 2.0” as still in progress; Ethereum was conceived in 2013 and launched in 2015, XRP runs on its own XRP Ledger, and the proof-of-stake upgrade (The Merge) was completed on September 15, 2022.

Ethereum is a programmable blockchain launched on July 30, 2015, and ether (ETH) is its native cryptocurrency, used to pay transaction fees called gas. As of September 27, 2026, ETH was the second-largest cryptocurrency by market value, at about $2,711 per coin (CoinGecko). Before investing, understand gas fees, staking, price volatility and scam risks.

Key Takeaways

• Ethereum is a platform, ether is the coin: developers build smart contracts and dapps on Ethereum, and every action is paid for in ETH.
• “Ethereum 2.0” is finished: The Merge switched Ethereum to proof-of-stake on September 15, 2022, cutting energy use by about 99.95%, according to ethereum.org.
• Fees are cheaper on layer 2 networks: ethereum.org’s layer 2 page showed an average cost of about $0.0014 per transaction on Ethereum-backed networks versus about $0.087 on Ethereum itself in September 2026.
• ETH is volatile: at about $2,711 on September 27, 2026, it was roughly 45% below its all-time high of $4,946 (August 24, 2025), per CoinGecko.
• Protect yourself: the UK Financial Conduct Authority says crypto investors should be prepared to lose all their money, and nobody needs to “upgrade” ETH to “ETH2”.

Ethereum is the second-largest cryptocurrency by market capitalization after Bitcoin (CoinGecko, September 2026), yet its many uses give new investors a steeper learning curve than Bitcoin.

“Ethereum fills two needs: One, it goes about as cash and can be a store of significant worth,” says Bill Noble, then a market analyst at Token Metrics, a cryptocurrency analytics platform. “Yet, Ethereum is likewise similar to a roadway for decentralized money.”

Rather than positioning itself mainly as “digital gold” like Bitcoin, Ethereum is a software platform that runs on its own blockchain. Users interact with the platform using ether (ETH), the cryptocurrency native to Ethereum, or buy and hold ETH as a long-term asset. Ethereum is widely used by software developers, while many other people buy ETH in the hope that it will be worth more over time.

What Is Ethereum?

Ethereum was conceived by programmer Vitalik Buterin in a 2013 white paper, and the Ethereum network went live on July 30, 2015, more than six years after Bitcoin’s January 3, 2009 launch.

“He understood that Bitcoin resembles a pocket mini-computer, intended to do a certain something, and it does it all around well, however you can’t do whatever else with it,” says Ollie Leech, learn proofreader at Coindesk, a cryptographic money media source.

So Buterin designed Ethereum, a programmable blockchain network with its own cryptocurrency, ether (ETH), able to do far more than record payments. Gavin Wood, Charles Hoskinson, Anthony Di Iorio and Joseph Lubin are among its co-founders.

While you can purchase and exchange Ethereum as a venture like Bitcoin, it’s additionally a product stage engineers can use to make new applications – regularly crypto-nearby or in any case intended to make purchasing, selling, and utilizing digital currency a smoother interaction. Like the ones on your telephone, these applications might be anything from lending applications to payment stages.

Leech compares Ethereum to a smartphone: developers build apps for phones, and in a similar way they build applications on Ethereum. While smartphone apps serve almost everyone, Ethereum applications are aimed mainly at crypto users. In the lending example, a developer builds the application, and other crypto users then use it to lend and borrow.

Everything on Ethereum runs on what are called smart contracts, he says. A smart contract is a program that runs on its own on the Ethereum blockchain, says Leech. Smart contracts carry out functions that a third party would normally have to handle.

For example, people can complete direct, peer-to-peer transactions over the network. Peer-to-peer lending was gaining popularity on Ethereum at the time of the original interview, says Leech. A lending application built on the Ethereum network lets people lend money to each other without involving a bank.

The smart contracts that power these applications are essentially programs designed to perform a specific function when certain conditions are met.

In a peer-to-peer loan, the contract executes the outcome (lending the money) once the collateral is deposited into the correct wallet or account. Possible advantages of a smart contract over a traditional lender include speed of execution, no human error or bias in carrying out the terms, and lower costs. The trade-off is code risk: a flaw in a contract can be exploited, as in The DAO hack of June 17, 2016, when about $50 million worth of ether was drained.

Different Uses of Ethereum

Like other major cryptocurrencies, Ethereum is built on the principles of decentralized finance (DeFi): the products and services that run on Ethereum are open to anyone with an internet connection.

Smart contracts let developers build decentralized applications (dapps) that serve many purposes. These include financial tools such as cryptocurrency exchanges, decentralized lending platforms and aggregator services like Matcha, which search several exchanges for the best prices. There are also categories of dapps for buying and selling digital art, gaming and developer technology.

Ethereum’s open-source design lets developers create entirely new cryptocurrencies on top of it, known as tokens, such as Chainlink’s LINK. XRP, which earlier versions of this article listed here, is not an Ethereum token: it is the native currency of the separate XRP Ledger. Well-known assets issued as tokens on Ethereum include Tether (USDT), which is also issued on other blockchains such as Tron and Solana, Uniswap (UNI), or USD Coin (USDC).

However, cryptocurrencies are not the only digital assets that can be created on Ethereum — NFTs, or non-fungible tokens, are another example of assets created on Ethereum. These digital tokens are used to represent ownership of unique items, according to ethereum.org; the ERC-721 standard that most NFTs follow was introduced in January 2018.

Ethereum versus Ether

Developers pay a fee to the Ethereum network to create new tokens or decentralized applications on it, and ordinary users pay the same kind of fee for every transaction. These payments are made in ether, Ethereum’s native currency. This charge is otherwise called “gas,” as indicated by Noble.

Gas is the cost of using the system, like paying a fare to ride the subway. Ether is the money you’d use to buy your MetroCard. Consider it “like costs that you need to pay to get things done and exchange on Ethereum,” says Noble. Different operations cost different amounts of gas, and fees rise when more people compete to use the network at the same time. According to ethereum.org, a standard ETH transfer uses 21,000 units of gas, each priced in gwei (one billionth of an ETH).

These gas costs, and all the uses developers pay to explore, help explain the rise in ether’s value over the years: as more developers build on Ethereum, they need more ether to pay gas fees, which adds demand for ether. Since the London upgrade of August 5, 2021, the base-fee part of every transaction fee is also burned, removing that ETH from circulation (ethereum.org). Demand for gas is one influence on ether’s price, not a guarantee that it will rise.

Investors in ether are betting on the continued use of Ethereum and on the future potential of its applications.

Gas fees were also one of the biggest obstacles to Ethereum’s growth, according to Noble. The upgrade then called “Ethereum 2.0” has since been completed: The Merge moved Ethereum from proof-of-work mining to proof-of-stake on September 15, 2022, cutting its energy use by about 99.95%, according to ethereum.org. The same source says The Merge was never intended to lower gas fees; fee relief has come mainly from layer 2 networks, helped by the Dencun upgrade of March 13, 2024. Ethereum.org also says holders did not need to do anything with their ETH, and that any claim you must “upgrade” ETH to “ETH2” is a scam.

To invest in Ethereum directly, you buy ether. One ether traded at about $2,711 on September 27, 2026, according to CoinGecko, roughly 45% below its all-time high of $4,946 set on August 24, 2025; the price changes constantly. As with Bitcoin, investing in Ethereum means buying and holding the token (ether) in the hope that it will rise in value over time, with no guarantee that it will.

Conclusion

Ethereum uses blockchain technology to create a decentralized platform. The ether cryptocurrency is the “fuel” that powers the network, and you can invest in the Ethereum network by buying ether. “Similarly as with any digital currency, purchasing Ether is a speculative venture,” cautions Wade. “Continuously do your exploration prior to putting into any advanced money, and don’t chance more than you will lose.”

If you are interested in cryptocurrencies more broadly, you could also look at companies that operate in the sector, or at regulated funds such as the US spot ether ETFs that began trading on July 23, 2024, instead of buying a single cryptocurrency.

Bitcoin Profit is an automated crypto trading app that claims its algorithm can anticipate price movements by leveraging a “0.01 second time leap.” Justwebworld has not verified these claims. The US Commodity Futures Trading Commission (CFTC) warns that AI and algorithmic trading bots cannot predict the future or sudden market changes, and that promises of high or guaranteed returns are red flags of fraud. Before using any trading app, check that the firm is authorized by your national regulator, for example with the UK Financial Conduct Authority’s Firm Checker.

Ethereum at a Glance

The table below summarizes the core facts about Ethereum and ether, with market figures dated because they change daily.

Ethereum vs. Bitcoin: What Is the Difference?

Bitcoin and Ethereum are the two largest cryptocurrencies, but they are designed for different jobs. Bitcoin is primarily a peer-to-peer currency with a fixed supply, while Ethereum is a general-purpose platform for smart contracts, tokens and decentralized applications.

Market values are from CoinGecko on September 27, 2026; protocol facts are from each project’s documentation and Wikipedia.

Major Ethereum Upgrades Since Launch

Ethereum changes through scheduled network upgrades (hard forks). According to ethereum.org’s history page, these are the upgrades that matter most to investors and users:

How Do Ethereum Gas Fees Work?

Ethereum gas fees are calculated as the units of gas a transaction uses multiplied by the sum of the base fee and an optional priority fee (tip), according to ethereum.org. The protocol sets the base fee according to demand, and the base fee is burned rather than paid to anyone.

• Gas: the unit that measures the computational work an operation needs. A standard ETH transfer uses 21,000 gas.
• Gwei: the unit gas is priced in; one gwei is one billionth of an ETH.
• Base fee: set by the protocol and burned, a mechanism introduced by EIP-1559 in the London upgrade (August 5, 2021).
• Priority fee: an optional tip; when demand is high, users offer higher tips to outbid others.

More complex smart contract applications perform more operations and consume more gas than a simple transfer, so they cost more. Layer 2 networks such as Arbitrum One, Optimism and Base are separate networks built on top of Ethereum and backed by it, offering cheaper and faster transactions. In September 2026, ethereum.org’s layer 2 page showed an average transaction cost of about $0.0014 on Ethereum-backed networks compared with about $0.087 on the Ethereum mainnet.

What Is Ethereum Staking?

Ethereum staking means locking up ETH to help validate the network under proof-of-stake in exchange for rewards. According to ethereum.org, running your own validator (home staking) requires at least 32 ETH, and a single validator can hold up to 2,048 ETH.

Ethereum.org lists four main ways to stake: home staking, delegated staking through a node operator, liquid or pooled staking (possible with as little as 0.01 ETH), and staking through a centralized exchange. Each option trades convenience for trust.

The risks ethereum.org names include slashing (penalties and ejection for validator misbehavior), small losses when a validator is offline, counterparty risk with third-party operators, smart contract risk with liquid staking tokens, and the centralization risk of large exchange pools.

How to Buy Ether: Step by Step

1. Check the platform is authorized. Use your regulator’s register before depositing money, for example the UK Financial Conduct Authority’s Firm Checker. Firms that are not authorized offer no access to the Financial Ombudsman Service or the Financial Services Compensation Scheme, the FCA says.
2. Choose how you want exposure. You can buy ETH itself on an exchange, or in the US buy a spot ether ETF through a brokerage account; the SEC approved these funds on May 23, 2024, and they began trading on July 23, 2024.
3. Decide on custody. Leaving ETH on an exchange means trusting that exchange; moving it to a self-custody wallet means you alone control the recovery phrase. See how to secure a crypto seed phrase.
4. Check the network before withdrawing. The same token can exist on Ethereum and on layer 2 or other chains; USDT, for example, is issued on Ethereum, Tron, Solana and others. Confirm that the receiving address supports the network you select.
5. Keep records for tax. Crypto tax rules differ by country, so record every purchase, sale and swap. Read the guide to cryptocurrency taxation and, for UK readers, whether you pay tax on crypto in the UK.

What Are the Risks of Investing in Ethereum?

The main risks of investing in Ethereum are price volatility, scams, smart contract failures and weak consumer protection. This page is general information, not personal financial advice.

• Volatility: ETH traded about 45% below its August 24, 2025 all-time high on September 27, 2026, according to CoinGecko.
• Total loss: the UK Financial Conduct Authority says anyone who invests in crypto “should be prepared to lose all your money” and that crypto investors are highly unlikely to be covered by the Financial Services Compensation Scheme (FCA, page updated January 29, 2026).
• Smart contract bugs: in The DAO hack of June 17, 2016, an attacker drained 3.6 million ETH, worth about $50 million at the time; the July 20, 2016 hard fork that reversed it split the chain and created Ethereum Classic.
• Fake upgrades: ethereum.org warns there is no “old ETH” and “new ETH”; anyone asking you to convert ETH to “ETH2” is running a scam.
• Trading-bot fraud: the CFTC’s advisory “AI Won’t Turn Trading Bots into Money Machines” warns that claims of huge or guaranteed returns from bots and arbitrage algorithms are red flags; in one case it cited, customers lost nearly 30,000 bitcoins.

For a wider view of how the law protects crypto holders, see the legal safeguards guide for crypto investors, and for the lending and exchange apps that run on Ethereum, see how decentralized finance (DeFi) works.

Frequently Asked Questions

What is the difference between Ethereum and ether?

Ethereum is the blockchain network and software platform; ether (ETH) is its native cryptocurrency. People often say “buying Ethereum” when they mean buying ether, which is used to pay gas fees for every transaction on the network.

Did Ethereum 2.0 happen?

Yes. The upgrade once called Ethereum 2.0 was completed as The Merge on September 15, 2022, when Ethereum moved to proof-of-stake. Ethereum.org has retired the “Eth2” name, and ETH holders did not need to take any action.

How much does an Ethereum transaction cost?

An Ethereum transaction costs the gas it uses multiplied by the base fee plus any tip, so the price varies with demand. In September 2026, ethereum.org showed an average of about $0.087 per transaction on the Ethereum mainnet and about $0.0014 on Ethereum-backed layer 2 networks.

How much ETH do you need to stake?

Running your own validator requires at least 32 ETH, according to ethereum.org. Liquid and pooled staking services accept much smaller amounts, from about 0.01 ETH, but add counterparty and smart contract risk.

Can you invest in Ethereum without buying ETH directly?

Yes. In the US, spot ether exchange-traded funds have traded on Cboe, Nasdaq and NYSE since July 23, 2024, after SEC approval on May 23, 2024. Investors can also buy shares of companies that work in the crypto sector.

Is Ethereum a safe investment?

No cryptocurrency is a safe investment in the sense of protected capital. ETH’s price can fall sharply, as it did from $4,946 in August 2025 to about $2,711 in September 2026, and the FCA warns crypto investors to be prepared to lose all their money.

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