Arbitrum ARB
Rank #92 by market cap
Last 7 days
▼11.20%What Arbitrum is
Arbitrum is a layer-2 network built by Offchain Labs to make Ethereum cheaper to use. Transactions are executed on Arbitrum, then compressed and posted back to Ethereum, so users get much lower fees while the record ultimately lives on the main chain.
It is an optimistic rollup, and the word optimistic is literal. Results are assumed valid and published without proof, and a challenge window opens during which anyone can submit evidence of fraud. That is why moving funds back to Ethereum through the official bridge takes about a week — the wait is the security model, not a queue.
Several things are commonly misread. The ARB token is for governance; gas on the network is paid in ETH, so holding ARB is not required to use it. The sequencer that orders transactions has been operated centrally, which means the party running it can in principle delay or reorder transactions — it cannot steal funds, and decentralising it has been a stated goal for years. And the contracts governing the chain are upgradeable by a governance process, so the guarantees rest on that process as much as on the mathematics.
Where ARB lives
Always verify a contract address against the project's own site before sending anything. Addresses are shown as published by the data source, not as an endorsement — and identical-looking tokens on other chains are the most common way people lose money here.
Price change
Arbitrum data synced 6m ago from CoinGecko. Figures shown in USD. This page is market information, not financial advice — and nothing here is a recommendation to buy or sell ARB.