Smart contracts
A smart contract is code that lives on the Ethereum blockchain and runs exactly as written. Once deployed, no single party can quietly change it.
This lets developers issue tokens, run marketplaces and coordinate treasuries without a trusted intermediary.
Gas and fees
Every operation consumes gas, priced in gwei (a tiny fraction of ETH). Fees rise when the network is busy and fall when it's quiet.
Layer-2 rollups like Arbitrum, Optimism and Base bundle transactions off-chain and post proofs to Ethereum, reducing fees by orders of magnitude.
Proof-of-Stake
Since The Merge, Ethereum secures itself with validators who stake ETH instead of miners burning electricity.
This cut Ethereum's energy consumption by more than 99.9% and introduced native yield for stakers.
ERC-20 tokens
Most tokens you'll encounter — USDC, USDT, DAI, thousands of governance tokens — are ERC-20 contracts on Ethereum.
This shared standard is why any Ethereum wallet can hold any ERC-20 without custom integration.
Buying ETH on Nexone
Search for ETH in Nexone, place an order and settle in seconds. Withdrawals support Ethereum mainnet and popular L2 networks.
Fees, spreads and network costs are displayed before you confirm.
Risks
Smart contracts can contain bugs. ETH price is volatile. L2 networks and bridges introduce their own risk surface.
Only interact with contracts you have researched, and read the Nexone Risk Disclosure before trading.