Ethereum, Solana, Bitcoin and the Rest: A Guide to the Major Chains

If you've spent any time looking at crypto, you've noticed there isn't just one blockchain. There are dozens with real usage, and hundreds more chasing attention. That's confusing if you're new, because most of them get pitched in the same breathless language: fastest, cheapest, most scalable. Strip the marketing away and the differences are usually about tradeoffs, not magic. This guide walks through the chains people actually use day to day and what makes each one distinct. If you want the basics of what a blockchain even is before diving into specific ones, start with What Is Blockchain?

Bitcoin: digital gold, on purpose

Bitcoin is the original, and it's still built around a narrow set of goals: be scarce, be secure, and be hard to change. Its supply is capped, its rules haven't meaningfully shifted since launch, and its scripting language is deliberately limited. You can't build a lending app or an NFT marketplace directly on Bitcoin the way you can on other chains, and that's not an oversight. It's a design choice.

That narrowness is exactly why people compare Bitcoin to gold. It's not trying to be a general-purpose computer. It's trying to be a reliable, predictable store of value that nobody can quietly inflate or rewrite. Whatever else changes in crypto, Bitcoin has tended to hold its position as the asset people fall back to when they want simplicity over flexibility.

Ethereum: the base layer everything else builds on

Ethereum took a different approach from the start: instead of a narrow scripting language, it shipped a full programming environment, so developers could write "smart contracts," self-executing code that runs on the chain itself. That one decision is why most decentralized finance (DeFi) and most NFT activity still happens on Ethereum or in its orbit.

In 2022, Ethereum made one of the biggest technical changes any major blockchain has pulled off: it moved from proof of work, where miners burn electricity to validate transactions, to proof of stake, where validators lock up ETH instead. The switch cut Ethereum's energy use dramatically and didn't require a single day of downtime, which is a lot harder than it sounds.

These days, Ethereum functions less like one crowded highway and more like a foundation that other chains settle into. A large share of daily crypto activity now happens on layer 2 networks that post their data back to Ethereum for security, which we'll get to below.

Solana: built for speed, tested by outages

Solana was designed around a different set of priorities than Ethereum: fast transactions and low fees, using an architecture that processes and orders transactions differently under the hood. That's made it a popular home for active trading, NFT drops, and consumer apps that need things to feel instant rather than waiting on confirmations.

It's worth being honest about the tradeoffs. Solana has had several notable network outages over its history, periods where the chain stopped processing transactions entirely while validators coordinated a restart. The team has shipped fixes after each incident, and reliability has improved over time, but it's a real part of the chain's track record and worth knowing before you treat it as equivalent to Bitcoin or Ethereum on uptime.

Ethereum's layer 2s: Arbitrum, Optimism, Base

You'll hear Arbitrum, Optimism, and Base talked about like they're separate ecosystems competing with Ethereum, but that framing is a little off. They're layer 2 networks: chains that handle transactions more cheaply and quickly, then post a compressed record back to Ethereum, which still acts as the settlement layer securing everything underneath.

Think of them less as rivals to Ethereum and more as extensions of it, built to solve the same problem in slightly different ways: how do you keep transactions cheap without giving up the security of the base chain. Base is run by Coinbase, Optimism and Arbitrum are run by their own independent teams, and all three have their own token or app ecosystems layered on top. For the actual mechanics of how layer 2s relate to layer 1s like Ethereum, see our dedicated Layer 1 vs Layer 2 guide.

BNB Chain: high throughput, tied to an exchange

BNB Chain is run by Binance, the world's largest crypto exchange, and it's built for high transaction throughput and low fees. It shares some technical roots with Ethereum, which makes it easy for developers to port apps over, and it has one of the largest user bases of any chain, largely because of its direct ties to Binance's exchange and wallet products.

The tradeoff is centralization. BNB Chain runs with a smaller, more tightly controlled set of validators than Bitcoin or Ethereum, which makes it faster and cheaper to operate but leaves more trust resting on Binance and its partners. That's a real tradeoff worth weighing, not a disqualifying flaw, but it's one you should go in aware of.

Avalanche: subnets and another take on scale

Avalanche takes yet another architectural approach, built around "subnets," customizable sub-chains that can be tailored for specific apps or use cases while still connecting back to Avalanche's main network. Like Solana and BNB Chain, it's positioned around speed and lower fees relative to Ethereum's base layer, and it's found a following among developers who want more control over how their specific chain behaves.

Where Avalanche differs from a layer 2 like Arbitrum is that its subnets don't rely on Ethereum for security. They're closer to independent chains that happen to share Avalanche's tooling and network. That gives builders more flexibility but means the security guarantees are Avalanche's own, not borrowed from a larger, more battle-tested base layer.

How to actually think about picking a chain

The honest answer is that the "best" chain depends entirely on what you're doing with it. If you're holding for the long term and prioritize security and simplicity above all else, Bitcoin's narrowness is a feature. If you're using DeFi protocols or trading NFTs, you'll likely end up on Ethereum or one of its layer 2s, simply because that's where the deepest liquidity and most mature tooling live. If you want fast, cheap trades and don't mind a network that's had rough patches, Solana is built for that.

Try to resist picking a chain based on hype or short-term price action. A token pumping this week tells you almost nothing about whether the underlying chain is reliable or well-built. What matters more, especially if you're actually going to use a chain rather than just speculate on it, is liquidity and ecosystem maturity: how many real users and real dollars are moving through it, how many apps are built and battle-tested on it, and how long it's been running without a major failure. Those things tend to matter more for most people than raw technical specs on a comparison chart.

If you want to see how these ecosystems actually trade against each other in real time, the LabelYX Markets Hub shows live spot and perpetual futures data across assets from many of these chains on Hyperliquid, which is a useful way to get a feel for where liquidity and activity actually concentrate.