Arbitrum
ARB Rank #69Price chart
What is Arbitrum?
Origins and governance
Offchain Labs was founded by Ed Felten, Steven Goldfeder and Harry Kalodner in 2018. Arbitrum One opened to the public in 2021. ARB distribution began with the March 2023 airdrop. Holders can vote directly or delegate voting power to representatives. DAO decisions cover protocol upgrades, treasury spending and ecosystem programs.
Rollup technology
Arbitrum One uses the Nitro optimistic rollup stack to execute Ethereum-compatible smart contracts. Transaction batches are compressed and published to Ethereum as blobs or calldata. The BoLD dispute protocol enables permissionless validation and challenges to incorrect state assertions. Arbitrum Nova uses the AnyTrust variant with a data availability committee. Transaction fees on One and Nova are paid in ETH.
Token parameters
ARB launched with an initial supply of 10 billion tokens. Its minting rules permit inflation of up to 2% annually rather than imposing a permanent 10 billion cap. The token uses ERC-20 contracts and can bridge between Arbitrum One and Ethereum. Governance votes take place on Arbitrum One. Protocol control is shared between the DAO and an elected Security Council under the DAO constitution.
Where to trade ARB
110 exchanges · top 10
Live spot quotes from connected exchanges
ARB funding rates
Live perpetual funding on every connected exchange. Positive = longs pay shorts.
Contracts & chains
Exact contract or mint per network — the identity layer used for DEX routing.
On-chain routes
Networks with a connected DEX routing adapter.