Ethereum

Understanding Ethereum (ETH): Much More Than Just a Cryptocurrency

ethereum coin

When people first discover crypto, they very quickly come across Bitcoin. That makes sense: it is the name everyone knows, the one that pushed the topic into the public debate. But as soon as you dig a little deeper, another name keeps coming up: Ethereum. And here, I need to be clear right from the start. Ethereum is not just “another crypto” behind Bitcoin. It is a network, an infrastructure, a development environment, a technical foundation on which a huge part of the modern blockchain ecosystem has been built. Reducing Ethereum to a simple token that goes up or down means missing the main point.

So I am going to handle this topic properly. My goal here is not to sell you a dream, or to make you believe Ethereum is some magical money-making machine. That would be false, and frankly pointless. My objective is simpler: to help you understand what Ethereum really is, why this network has mattered so much in the history of cryptocurrencies, what ETH is actually used for, which use cases are genuinely interesting, which limitations are still very real, and why Ethereum continues to hold a central place in the sector anyway.

I am also going to take the time to separate the things that many people mix together: Ethereum the network, ether or ETH as the native asset, smart contracts, decentralized applications, layer 2s, DeFi, NFTs, staking, gas fees, wallets, exchanges, technical risks, and hype cycles. If you are a complete beginner, you should be able to follow along. If you already have some basic knowledge, the second half of this page will go a bit further technically without drowning in jargon for the sake of it.

And if you want to lay the groundwork before going deeper, you can also read my general page on cryptocurrency, my broader overview of cryptocurrencies, or my article on Bitcoin, which remains a useful comparison point if you want to understand what Ethereum brings that is different.

Table of Contents

What is Ethereum, concretely?

The simple definition is this: Ethereum is a programmable blockchain. Where Bitcoin was mainly designed to allow people to transfer and store value without a central authority, Ethereum pushed the idea much further. The network does not just allow transactions to be sent. It also allows code to be executed on a decentralized infrastructure. That point alone changes almost everything.

In practical terms, Ethereum allows developers to create programs called smart contracts, meaning contracts that execute automatically when certain conditions are met. From there, it becomes possible to build all kinds of applications: decentralized exchanges, lending tools, games, governance systems, NFT platforms, digital identity solutions, tokenization systems, and many other things.

In other words, Ethereum is less a simple “product” than a technical foundation. People do not only come to Ethereum to buy a token. They come to Ethereum to use or build services. That is exactly what made the difference historically. The network did not invent every crypto use case, far from it, but it played a major role in standardizing them, popularizing them, and creating common ground for developers, wallets, platforms and users.

That is also why Ethereum has such a particular place in the ecosystem. Many competing blockchains positioned themselves against Ethereum by promising to be faster, cheaper, simpler or more modern. Some of them do have real arguments. But despite that competition, Ethereum remains one of the sector’s main centers of gravity. Not because it is perfect, but because it combines longevity, relative security, ecosystem depth, technical standardization and network effects.

Ethereum and ETH: what is the difference?

This is a basic point, but it needs to be stated properly because there is still a lot of confusion. Ethereum refers to the network, the infrastructure, the technical ecosystem. ETH, or ether, refers to the network’s native asset. This is not a minor detail. Saying “I bought Ethereum” is common in everyday language, but technically what people buy are units of ether.

ETH serves several purposes. First, it is used to pay transaction fees, also known as gas fees. Every action on the network has a cost: sending ETH, interacting with a DeFi protocol, deploying a contract, minting an NFT, using an application, all of that requires gas paid in ETH. Then ETH is also used to help secure the network through staking. Finally, it also plays a broader economic role: speculative asset, potential store of value for some investors, collateral in DeFi protocols, intermediate asset in many exchanges, and support for many more or less sophisticated strategies.

This two-level structure, network plus asset, is important to understand. You can be interested in Ethereum without doing aggressive trading. You may want to use Ethereum for its applications without trying to “bet” on the price. On the other hand, you can also buy ETH without really understanding what the network actually enables. The problem is that many people do the second thing and stop there. Yet understanding the infrastructure helps you better assess what you are buying, along with its strengths, weaknesses and risks.

The history of Ethereum: from idea to major network

Ethereum was proposed in 2013 by Vitalik Buterin. The initial idea was simple in its logic, but huge in its implications: instead of creating a blockchain designed almost only as a monetary system, why not create a general-purpose, programmable blockchain capable of hosting all kinds of applications? That vision led to the publication of the white paper, then to a fundraising phase in 2014, before the network launched in 2015.

At the time, this approach marked a real break. Bitcoin had already shown that a distributed ledger could function without a central bank or a single authority. Ethereum took that foundation and turned it into something more flexible. The ambition was no longer just to transfer a native asset, but to allow programmable logic to be executed directly on the blockchain.

Ethereum’s path has not been clean, linear or free of setbacks. One of the best-known episodes remains the DAO hack in 2016, which led to a hard fork and the split between Ethereum and Ethereum Classic. That episode still matters because it reminds us of something too often forgotten in oversimplified narratives: code, governance and ideology do not align automatically. A blockchain is not just a technical object. It is also a social, political and economic system, with human decisions behind it.

After that, Ethereum went through several major phases. First came the ICO explosion, with both innovation and excess. Then came the rise of DeFi, which showed that some financial services could be recreated on open, programmable rails. Then came the NFT wave, which attracted a huge amount of attention, sometimes for good reasons, sometimes for purely speculative ones. And alongside all that, Ethereum kept evolving technically.

One of the biggest turning points was The Merge in 2022, meaning the shift away from proof of work toward proof of stake. That was a major change, energetically, economically and structurally. Then, in 2024, the Dencun upgrade reinforced the network’s orientation toward rollup-based scaling with the introduction of blobs. In 2025, the roadmap continued moving forward with other important upgrades. This shows that Ethereum is not a frozen protocol. It is a system that keeps evolving, sometimes slowly, sometimes through compromises, but with a fairly clear technical direction: improve the experience, increase capacity, and preserve a relatively robust base.

That history matters because it also explains why Ethereum remains so central. The network has accumulated scars, criticism, successes, failures, hype cycles and durable innovations. It is not a perfect chain that appeared out of nowhere with polished marketing. It is a living protocol, old by crypto standards, tested in the real world, and supported by a massive ecosystem.

How does Ethereum work?

At a simple level, Ethereum works like a network of machines that verify, share and validate the same state of the system. When you send ETH, when you interact with an application, or when you call a function within a smart contract, you trigger an operation that the network must process and record on the blockchain.

Historically, Ethereum used proof of work, just like Bitcoin, with miners. That is no longer the case. Today, Ethereum runs on proof of stake. This means the network’s security relies on validators who lock up ETH in staking to participate in consensus. If you want the simplest possible explanation, remember this: instead of using energy-intensive computing power to secure the network, Ethereum now uses a system based on locked ETH and distributed validation rules.

For a beginner, the most concrete thing to understand is often gas. Gas represents the computational cost of actions on Ethereum. The more resources an operation requires, the more expensive it can become. A simple ETH transfer usually costs less than a complex interaction with a DeFi protocol. And because space on the main layer is not infinite, users compete with each other when the network is heavily used. As a result, fees go up.

This is one of the most legitimate long-standing criticisms of Ethereum. For a long time, the argument “Ethereum is amazing” ran straight into a simple reality: for many use cases, fees on the main layer could become frankly annoying, even absurd for smaller portfolios. That problem has not disappeared completely. It has been reduced, shifted, and partly addressed by layer 2s, but there is no point pretending otherwise: using Ethereum on its main layer can still be expensive depending on the period and the use case.

This is where layer 2s come in. The general idea is to process a large part of the activity outside the main layer, then publish or anchor the relevant data back to Ethereum. That helps reduce costs and increase capacity while still benefiting from part of Ethereum’s security. People then often talk about rollups, whether optimistic or zero-knowledge depending on the mechanism involved. For the end user, the main thing to remember is that the modern Ethereum experience increasingly goes through these extra layers.

This point matters a lot because it changes how the network must be understood. Today, Ethereum is no longer just “the main chain.” It is also a foundation to which a whole ecosystem of second-layer solutions is attached. Some see that as an intelligent evolution. Others see it as an admission that the main layer alone could not absorb demand at an acceptable cost. Both interpretations contain part of the truth.

If we go a bit further, Ethereum also relies on a virtual machine, the EVM or Ethereum Virtual Machine. This is the execution environment that allows smart contracts to run in a standardized way. That standardization played a huge role in Ethereum’s adoption because it made it easier to create tools, libraries, wallets, frameworks and even EVM-compatible blockchains. In plain terms, Ethereum did not just create a network. It also defined a technical grammar that became extremely influential.

Smart contracts, DApps and token standards: the real core of Ethereum

If you only remember one big idea, it should probably be this: the real core of Ethereum is smart contracts. They are what allow the network to go much further than a simple transaction ledger. A smart contract is a program deployed on the blockchain. It is not “smart” in the human sense of the word. It simply executes rules written in code. But that automatic, public and decentralized execution makes it possible to build an enormous number of things.

From smart contracts, we get DApps, meaning decentralized applications. In practice, a DApp can sometimes look like a perfectly normal website or interface. What the user sees is not always very different from a regular web application. The difference lies in the architecture: part of the logic, rules or assets is managed through blockchain contracts rather than through a centralized database controlled by a single company.

Ethereum also popularized token standards, which mattered enormously. The best-known is ERC-20 for fungible tokens. It made possible the explosion of an entire ecosystem of tokens interoperable with the same wallets, the same platforms and the same tools. ERC-721 marked the NFT world. Other standards also exist, but what matters here is understanding that this standardization was decisive. It allowed developers to build faster, and users to interact more easily with a wide variety of assets.

The downside, of course, is that this openness also made it easier to create thousands of useless tokens, opportunistic projects, scams, copies and badly designed systems. Ethereum created a huge playground. As always in crypto, that produced solid things, mediocre things and frankly toxic things. You need to be able to hold all three realities in your head at the same time.

What is Ethereum actually used for? The real use cases

This is often the real question. Fine, Ethereum allows smart contracts. But what for, in concrete terms? The first answer is decentralized finance, or DeFi. Thanks to Ethereum and compatible networks, we saw the emergence of decentralized exchanges, lending protocols, yield systems, stablecoins, derivatives, collateral tools and a whole set of open financial building blocks. None of that is automatically good, healthy or suitable for everyone, but it is a real use case.

The second major use case is stablecoins. Many people talk about crypto while thinking directly about speculation on volatile assets, whereas in practice a huge part of activity revolves around tokenized stable currencies. Ethereum plays a key role in this infrastructure. For many users and companies in the sector, blockchain is not just about “buying a coin,” but about moving, using and integrating stable digital assets into various services.

We can also mention NFTs, although it is important to stay lucid. Beyond the speculative noise and soulless collections, there is a real technical logic: representing non-fungible assets, certificates, digital ownership titles, access rights, in-game objects, identities or various rights on-chain. In practice, the market often drifted into excess, but the core principle still makes sense in some contexts.

Ethereum is also used for broader tokenization: project shares, digital assets, governance rights, utility points, community infrastructure, treasury systems for DAOs, and sometimes bridges toward real-world assets. Again, there is no reason to indulge in fantasies. Not everything needs to be tokenized. Many projects do it simply to raise money or ride a trend. But there are cases where the programmability of the asset does bring something real.

In a more discreet but interesting register, Ethereum and its ecosystem are also used for decentralized identity, certification, traceability, community coordination, blockchain games, governance experiments and collective funding. None of these sectors is fully mature, far from it. Many projects fail. Many never find a real audience. But it would still be false to say Ethereum is only used for speculation. The problem is not the lack of use cases. The problem is sorting solid use cases from fragile ones and purely opportunistic ones.

For a BoostRevenus reader, I want to add one important point: Ethereum is not necessarily the best entry point if your goal is mainly to “earn a little crypto” when starting out with small amounts. If you are mostly looking for simple ways to discover the ecosystem without a big budget, content such as my page on crypto faucets, my file on free faucets, or more practical pages such as AllFaucet may be better entry points. Ethereum is fascinating, but it is not always the simplest environment for a very small budget, especially if we are talking about the main layer.

How to buy ETH and store it properly

If your goal is to buy ETH, the simplest route is usually through a centralized exchange. It is rarely the purest solution ideologically, but for a beginner, it is often the clearest one. You create an account, deposit euros or another currency, then buy the asset. On BoostRevenus, I have already covered several well-known platforms in my category on centralized exchanges, as well as dedicated pages on Binance, Bitget, Bybit and KuCoin.

The choice of platform depends on several criteria: interface clarity, fees, reputation, market depth, availability in your area, support quality, withdrawal options, extra tools, and sometimes compatibility with your future needs. If you simply want to buy ETH, there is no need to look for the most overcomplicated machine possible. What matters most is using a known player, understanding what you are doing, and not rushing in just because an interface looks attractive.

Then comes the question of storage. And here, I need to be honest: leaving your crypto on an exchange can be convenient, but it is not ideal if you plan to keep a significant amount or if you really want to learn the logic of self-custody. As long as your funds remain on a platform, you depend on that platform. That can be acceptable for small amounts or for active use, but it is not the only option.

You can also use a non-custodial wallet, meaning a wallet whose recovery phrase and keys you directly control. That is when you really start entering the actual crypto logic. You become responsible for your own security. This gives you more control, but it also demands much more discipline. A poor backup, an exposed recovery phrase, a signature you do not understand, a fake website or malware, and problems can arrive very quickly.

For a beginner, the best advice is often the least flashy one: start simple. Understand the difference between keeping funds on a platform and keeping them in your own wallet. Do not send funds across a network you do not understand. Always check the address, the network being used, the withdrawal fees and the compatibility between the sending platform and the receiving wallet. In crypto, a basic mistake can cost more than bad market timing.

If you plan to buy ETH purely as exposure to the asset, you do not need to use all the technical layers around Ethereum right away. On the other hand, if you want to use DeFi, DApps or layer 2s, you have to accept a steeper learning curve. It is not impossible, but it is also not the ultra-simple universe some influencers like to sell.

Ethereum vs Bitcoin, Solana, BNB Chain and others

Comparing Ethereum with Bitcoin is useful, but only if we understand that the two networks are not aiming at exactly the same thing. Bitcoin remains the historical reference as a decentralized monetary asset, with a philosophy that is more restrained, more rigid and more focused. Ethereum, by contrast, placed programmability at the center. Put simply, Bitcoin is more specialized; Ethereum is more general-purpose. This is not an absolute hierarchy, it is a difference of architecture and purpose.

Compared with chains such as Solana, the comparison shifts. Solana often highlights speed and low transaction costs. On that front, Ethereum’s main layer often looks less attractive. But Ethereum answers with other arguments: longevity, ecosystem depth, standardization, the highly influential compatibility of the EVM, historical weight in DeFi and a level of perceived security that many in the market still consider stronger. So the real debate is not “who wins absolutely?” but which compromise seems more acceptable to you.

Against BNB Chain, the reading is different again. BNB Chain often attracted users through low fees and easy access, especially for people looking for cheap transactions. But that accessibility also comes with a more centralized profile, which does not answer the same set of priorities. Once again, there is no universal answer. There are trade-offs between cost, decentralization, speed, application surface and ecosystem culture.

What plays in Ethereum’s favor is that even when users move to other chains for reasons of cost or speed, they often return to an environment built on references Ethereum helped impose: standards, smart contract models, wallet logic, application interoperability, DeFi protocol structure, the role of stablecoins, or EVM-compatible variants. Ethereum is not always the most comfortable option in the short term, but it remains very often the benchmark other networks position themselves against.

On the other hand, it also has to be said that Ethereum has sometimes suffered from an almost religious discourse among some of its defenders. No, Ethereum is not perfect just because it is historical. No, its fees have not always been “a fake problem.” No, the average user does not necessarily want to juggle between mainnet, bridges, layer 2s, signatures, approvals and complex contracts just to carry out a basic operation. Competition has sometimes pointed out very real weaknesses. Ignoring them serves no purpose.

Ethereum’s strengths and weaknesses

The first major strength of Ethereum is its ecosystem. It is huge, old, documented, alive, and supported by a critical mass of developers, tools, wallets, protocols, standards and users. When people want to build in crypto, Ethereum still very often remains the main reference point, even when they later choose another chain.

The second strength is its programmability. Ethereum did not just make it possible to issue one more asset. It made it possible to create a wide variety of application layers. This flexibility is what gave rise to DeFi, many tokenization systems, dominant standards and an entire technical toolset that continues to influence the whole sector.

The third strength is its accumulated credibility. I stress the word accumulated. In crypto, many projects seem revolutionary for six months before disappearing, emptying out, or revealing an architecture that is too fragile. Ethereum, on the other hand, has gone through multiple cycles, multiple crises, multiple narratives and multiple rounds of criticism. That does not make it invulnerable, but it does give it a historical density many competitors still do not have.

On the weakness side, the most famous one remains complexity. Ethereum can be intimidating for a beginner. Between ETH, tokens, gas, approvals, DApps, networks, bridges, layer 2s, signatures and wallets, the learning process is not immediate. That can feel exciting if you enjoy technical topics. It can also feel frankly tedious if you just want to do something simple without feeling anxious at every click.

Another very real weakness is fees, especially on the main layer. Yes, layer 2s improve the situation a lot. Yes, recent developments have helped reduce some costs. But that does not completely change the overall conclusion: for many small operations, Ethereum mainnet can still be unattractive. And having to explain to a beginner that they should move to another layer in order to get acceptable fees shows clearly that the native experience is not always ideal.

There is also smart contract risk. Many people discover crypto with a rather simplistic view: if it is on the blockchain, it is safe. That is false. A smart contract can be badly designed, badly audited, badly governed, or exposed to unexpected scenarios. The history of DeFi is full of exploits, vulnerabilities, drained funds and supposedly solid projects that turned out to be fragile. Ethereum enables major things, but that programmability also opens a very broad attack surface.

Finally, we can also discuss the relative centralization of some uses, especially in pooled staking, in some infrastructure providers, or in the practical dependence on a few major tools. Ethereum remains far more decentralized than many competing chains in certain respects, but it does not exist in a theoretical vacuum. Social, economic and technical layers always create zones of concentration.

Ethereum seen progressively: from beginner to more technical reader

If you are just starting out, remember this basic core: Ethereum is a network that allows decentralized programs to be executed. Its native asset is ETH. You need ETH to pay network fees. A large part of modern crypto services has been built around this infrastructure. And even though other chains have challenged its dominance, Ethereum remains a major pillar of the ecosystem.

If you already have a bit more perspective, then a second level of understanding must be added. Ethereum is not only “the DeFi chain” or “the NFT chain.” It is also an environment where standards, the EVM and network effects have played a huge role. Ethereum’s value does not come only from its speed or its transaction costs. It also comes from its ability to serve as a common foundation for a wide variety of actors.

And if you go further technically, you need to understand that today’s Ethereum increasingly functions like a modular architecture. The main layer plays a role in security, settlement and anchoring. Layer 2s absorb a growing share of activity. Blobs and the roadmap developments move in that direction. The network is no longer trying only to do everything directly on mainnet at a reasonable cost. It is embracing a strategy where scale comes through complementary layers.

This evolution matters because it also changes how Ethereum should be assessed. If you judge it only as a layer 1 blockchain against other faster and cheaper layer 1s, you miss part of the picture. If you judge it as a broader system, composed of a relatively robust base and a set of secondary layers that take on scalability, the analysis becomes different. You may still prefer another philosophy, but you are no longer talking about the same object.

Who Ethereum makes sense for, and who it may not suit

Ethereum makes sense for several types of people. First, for anyone who wants to understand the core of the modern crypto ecosystem. Even if you never buy ETH, knowing Ethereum helps you understand a huge part of the sector. Then for the user who wants access to a rich application universe: wallets, DApps, stablecoins, DeFi, tokenization, on-chain tools, layer 2s, and so on. Finally, for the more technical or curious profile, Ethereum remains a very rich learning environment.

On the other hand, Ethereum is not necessarily the best choice if you are mainly looking for absolute simplicity, the lowest possible fees, or an experience with no learning curve. It can also be poorly suited to people who just want to perform a few modest operations without taking any interest in the broader environment. In that case, other networks or other approaches may feel more comfortable in daily use.

It is also important to distinguish between understanding Ethereum and taking exposure to ETH as an investment. The two overlap, but they are not the same thing. You can find Ethereum intellectually fascinating, technically influential and historically central, while still remaining cautious about buying ETH at a given moment. Conversely, you can buy ETH because you believe in the network’s long-term future while knowing full well that it remains a volatile asset exposed to the wider crypto market.

To take your thinking further, I would also advise you not to isolate Ethereum from the rest of the ecosystem. Re-reading my page on Bitcoin, comparing it with my pages on centralized exchanges, or broadening your view through my cryptocurrencies section often helps avoid a common mistake: believing that one page, one token or one narrative sums up the whole sector.

My opinion on Ethereum

My opinion is fairly simple: Ethereum absolutely deserves to be understood seriously. Not because it is perfect, and not because it should be admired on principle, but because it has durably changed the way blockchain is understood. The network made a huge part of today’s on-chain economy possible. It imposed standards, enabled major use cases, attracted a massive developer base, and served as a full-scale laboratory for ideas that later spread everywhere.

On the other hand, I see no value in talking about it as if it were a miracle solution. Ethereum remains complex, sometimes expensive, sometimes frustrating, and often demanding. Its universe is full of serious projects, but also of garbage, imitations, scams and narratives inflated by marketing. You do not respect a reader by selling only the bright half of the story.

In my view, the right attitude toward Ethereum is therefore this: curiosity, respect for what the network has brought, interest in its real use cases, but lucidity about its limitations, its risks, and the difficulty of separating durable innovation from speculative noise. If you keep that in mind, Ethereum becomes much easier to read. And that is already a lot, because in crypto, understanding what you are looking at is often worth more than chasing the latest fashionable narrative.

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