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Investing » What Is Ethereum?

What Is Ethereum?

Ethereum was introduced in 2015 as an alternative to Bitcoin. As most digital currencies, Ethereum's software is based on the blockchain technology. Learn what is Ethereum/Ether, how businesses use it and what the differences between it and Bitcoin. Also, we've summarized how and where to buy Ethereum.
Author: Baruch Mann (Silvermann)
Interest Rates Last Update: April 1, 2025
The banking product interest rates, including savings, CDs, and money market, are accurate as of this date.
Author: Baruch Mann (Silvermann)
Interest Rates Last Update: April 1, 2025

The banking product interest rates, including savings, CDs, and money market, are accurate as of this date.

We earn a commission from our partner links on this page. It doesn't affect the integrity of our unbiased, independent editorial staff. Transparency is a core value for us, read our advertiser disclosure and how we make money.

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Table Of Content

What Is Ethereum?

Ethereum is a decentralized blockchain platform that enables the creation of smart contracts and decentralized applications (dApps).

Unlike Bitcoin, which focuses primarily on peer-to-peer currency transfers, Ethereum offers developers a programmable framework for building a wide range of applications.

Its native cryptocurrency, Ether (ETH), powers transactions, smart contracts, and staking activities within the network.

As a result, Ethereum has become one of the most widely used and influential blockchain ecosystems in the world, supporting innovations in decentralized finance (DeFi), NFTs, gaming, and more.

How Does Ethereum Work?

Ethereum operates as a decentralized platform that enables more than simple financial transactions, creating new possibilities for digital applications.

Smart contracts are self-executing agreements where the terms are directly written into code. They operate without needing a third party, ensuring trust and automation.

  • Automatic Execution: Contracts execute automatically once conditions are met, eliminating manual intervention.

  • Transparency: Code and outcomes are visible to all participants, enhancing trust among parties.

  • Reduced Costs: Transaction and service fees are significantly lowered by removing intermediaries.

Therefore, smart contracts streamline processes that traditionally require lawyers or escrow services, making industries like real estate and insurance more efficient.

Ethereum allows developers to create decentralized applications that run on a peer-to-peer network instead of centralized servers.

  • User Empowerment: dApps give users greater control over their data and interactions.

  • Censorship Resistance: Applications are resistant to government or corporate shutdowns because of their decentralized nature.

  • Diverse Use Cases: dApps support sectors like gaming, finance, healthcare, and digital identity management.

As a result, Ethereum has become the backbone for many major DeFi platforms and NFT marketplaces, providing users with new digital experiences.

Ether (ETH) is not just a cryptocurrency but also the essential fuel that powers the Ethereum network's operations.

  • Transaction Fees: ETH is used to pay for “gas fees” when executing transactions and smart contracts.

  • Staking Rewards: Users can stake ETH to help secure the network and earn rewards in return.

  • Value Transfer: ETH can also function as a store of value and medium of exchange, much like Bitcoin.

Because ETH is required for interacting with the network, it ensures that resources are fairly allocated and that network security remains robust.

The Ethereum Virtual Machine (EVM) acts as a decentralized computer that executes smart contracts and dApp operations uniformly across all nodes.

  • Universal Compatibility: Developers can write smart contracts in multiple languages, which the EVM standardizes for the network.

  • Security Layer: EVM ensures that all transactions and contract executions happen securely and consistently.

  • Global Reach: No matter where a node is located, the EVM ensures it follows the same computational logic.

In order to maintain trustless consensus, Ethereum relies on the EVM to ensure that every node independently verifies the same results without relying on central servers.

Ethereum transitioned from Proof of Work (PoW) to Proof of Stake (PoS) with the Merge, making it more energy-efficient and scalable.

  • Validator Participation: Users lock up ETH to become validators, helping to secure the network.

  • Energy Efficiency: PoS consumes significantly less electricity compared to PoW mining.

  • Security Incentives: Validators are rewarded for honest behavior and penalized for malicious activities.

Because of this shift to Proof of Stake, Ethereum now aligns better with environmental sustainability goals and can support more users and applications without sacrificing security.

Ethereum vs Bitcoin - Key Differences

Ethereum and Bitcoin are both major blockchains, but they serve different purposes. Bitcoin focuses on secure, peer-to-peer currency transactions, acting as digital gold.

FEATURE
ETHEREUM
BITCOIN
Primary Purpose
Smart contracts and dApps
Digital peer-to-peer money
Consensus Mechanism
Proof of Stake (PoS)
Proof of Work (PoW)
Transaction Speed
Faster, but varies based on network load
Slower, around 7 transactions per second
Supply Limit
No fixed maximum
Capped at 21 million BTC
Development Flexibility
Highly flexible for applications
Primarily focuses on monetary transfers

Ethereum, however, enables smart contracts and decentralized applications, offering a flexible platform for innovation beyond payments. Their technology, speed, and energy usage also differ significantly.

Ethereum Benefits & Risks: What Investors Should Know

Ethereum offers exciting opportunities for investors but also presents unique challenges that should be understood before committing capital to this asset.

BENEFITS
RISKS
Smart Contract Innovation
High Transaction Fees
Strong Developer Community
Regulatory Uncertainty
Widespread Adoption
Scalability Challenges
Transition to Proof of Stake
Competition from Other Blockchains
Diverse Use Cases
Market Volatility

Ethereum introduced smart contracts, enabling automated and secure agreements across industries like finance, gaming, and supply chain management.

Thousands of developers worldwide continuously improve Ethereum’s ecosystem, creating new decentralized applications (dApps) and supporting long-term growth.

Ethereum powers many of the largest DeFi, NFT, and Web3 projects, making it a critical infrastructure layer for blockchain innovation.

The shift to Proof of Stake has made Ethereum more energy-efficient and scalable, attracting environmentally conscious investors and institutions.

From decentralized finance to digital identity, Ethereum’s flexible platform supports a wide range of real-world applications, boosting its long-term utility.

During periods of heavy network use, Ethereum’s gas fees can spike dramatically, making smaller transactions expensive and inefficient.

Because Ethereum supports financial applications, it could face increasing regulatory scrutiny that might affect adoption and network operations.

Although upgrades are underway, Ethereum still struggles with slow transaction speeds and congestion compared to some newer blockchains.

Emerging platforms like Solana, Cardano, and Avalanche offer cheaper and faster alternatives, which could divert developers and users away.

Like all cryptocurrencies, Ethereum’s price can be highly volatile, exposing investors to significant short-term losses if not managed carefully.

Where You Can Buy Ethereum (ETH)?

Buying Ethereum (ETH) has become more accessible thanks to a wide range of platforms that cater to both beginners and experienced investors.

  • Coinbase: One of the most user-friendly platforms to buy ETH, ideal for beginners who want a straightforward buying experience.

  • Kraken: Offers competitive fees and strong security features, making it suitable for ETH buy for larger purchases and active traders.

  • Gemini: Provides a secure and regulated environment, appealing to investors who prioritize compliance and transparency.

  • Crypto.com: Known for offering various payment options and promotional rewards for crypto purchases, including Ethereum.

  • Binance US: A cost-effective option with low trading fees and a wide range of cryptocurrencies, perfect for diversifying beyond ETH.

Choosing the right platform depends on your priorities, such as fees, security, available payment methods, and ease of use.

FAQ

Ethereum is the blockchain platform that supports applications and smart contracts, while Ether (ETH) is its native cryptocurrency used for transactions.

Once deployed on the Ethereum blockchain, smart contracts cannot be changed unless they are designed with specific upgrade functions or proxies.

Gas refers to the fee users must pay to perform transactions or run smart contracts on Ethereum, compensating network validators for computational work.

Yes, Ethereum is decentralized, meaning no single entity controls the network; thousands of nodes around the world maintain and validate it.

Ethereum's Proof of Stake requires validators to lock up Ether as collateral in order to propose and validate new blocks on the blockchain.

An ERC-20 token is a standardized type of token that operates on the Ethereum blockchain, enabling compatibility across various wallets and exchanges.

Ethereum upgrades are proposed through Ethereum Improvement Proposals (EIPs) and require consensus from the developer community and network participants.

No, after Ethereum's transition to Proof of Stake, mining was replaced by staking, and mining Ethereum is no longer possible.

Nodes are computers running the Ethereum client software that help validate transactions, maintain blockchain data, and ensure network security.

Picture of Baruch Mann (Silvermann)

Baruch Mann (Silvermann)

Baruch Silvermann is a financial expert, experienced analyst, and founder of The Smart Investor.  Silvermann has contributed to Yahoo Finance and cited as an authoritative source in financial outlets like Forbes, Business Insider, CNBC Select, CNET, Bankrate, Fox Business, The Street, and more.
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This website is an independent, advertising-supported comparison service. The product offers that appear on this site are from companies from which this website receives compensation. This compensation may impact how and where products appear on this site (including, for example, the order in which they appear).

This website does not include all card companies or all card offers available in the marketplace. This website may use other proprietary factors to impact card offer listings on the website such as consumer selection or the likelihood of the applicant’s credit approval.

This allows us to maintain a full-time, editorial staff and work with finance experts you know and trust. The compensation we receive from advertisers does not influence the recommendations or advice our editorial team provides in our articles or otherwise impacts any of the editorial content on The Smart Investor.

While we work hard to provide accurate and up to date information that we think you will find relevant, The Smart Investor does not and cannot guarantee that any information provided is complete and makes no representations or warranties in connection thereto, nor to the accuracy or applicability thereof.

Learn more about how we review products and read our advertiser disclosure for how we make money. All products are presented without warranty.