If Bitcoin is a very careful ledger, Ethereum is a ledger with a small general-purpose computer bolted on. Developers deploy contracts, anyone can call them, and every node re-runs the same instructions to reach the same result. That shared execution is what lets strangers use the same lending market, exchange or collectible without a company sitting in the middle.
Most of the crypto that people meet day to day was issued on Ethereum or on a network that copied its design. Fungible tokens usually follow the <a href="/glossary/erc-20/">ERC-20</a> standard, which is why a single wallet can hold hundreds of different tokens without any special support for each one. Collectibles use a related standard for unique items.
Ethereum secures itself with <a href="/glossary/proof-of-stake/">proof of stake</a>. Participants lock up ether to become validators, propose and attest to blocks, and can lose part of that stake if they misbehave. Running the network is therefore a matter of capital at risk rather than electricity burned, which is a genuine architectural difference from mining.
Two things confuse newcomers. Fees rise and fall with demand for block space, so the same action can feel cheap one hour and painful the next; much activity has moved to <a href="/glossary/layer-2/">layer-2</a> networks that settle back to Ethereum for less. And code on a chain is only as good as the people who wrote it, so a contract bug is a permanent, public bug.
What Is Crypto and Blockchain? A Plain-English Start
Puntos clave
- Ether is not only an asset to hold; it is the fuel every transaction on the network has to spend.
- A token that lives on Ethereum inherits the chain's security, not the honesty of whoever issued the token.
- Sending funds to the right address on the wrong network is one of the most common and least recoverable beginner mistakes.
Ethereum — preguntas frecuentes
What is the difference between Ethereum and ether?
Ethereum is the network, ether is the asset that moves on it. You hold ether, you pay transaction fees in ether, and validators are rewarded in ether. People shorten both to ETH in conversation, which is why the two blur together. Prices and tickers always refer to ether, while upgrades and outages refer to the network.
Do I need to understand smart contracts to use Ethereum?
Not to send or receive ether. You do need a basic grasp before you start approving contracts, because approving one grants an application permission to move specific tokens from your wallet. Read what you are signing, keep approvals narrow, and remember that a signature you do not understand is a signature you should not give.
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