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How to Buy Arbitrum (ARB) in 2026: A Beginner’s Guide

Arbitrum is one of the largest layer-2 networks for Ethereum. Its ARB token is often mistaken for a “fee coin,” but it isn’t one. We explain what it’s for and how to buy it.

Aspiro Editorial · 18.10.2026

What Is Arbitrum

Arbitrum is a layer-2 (L2) network on top of Ethereum, developed by Offchain Labs. Transactions are bundled into batches and recorded on Ethereum. This keeps the security of the main network while making fees many times lower. Many well-known DeFi apps run on Arbitrum.

The ARB token appeared in 2023 and was distributed to early users of the network. An important detail: fees on Arbitrum are paid in ETH, not ARB. ARB is a governance token: its holders vote on changes to the protocol and on how community funds (the DAO) are spent.

ARB Risks

How to Buy Arbitrum (ARB): Step by Step

Where to Keep ARB

On an exchangeYour own wallet
Who holds the keysThe exchangeOnly you (seed phrase)
ConvenienceSell in one clickTo sell, you first transfer to an exchange
Main riskAccount hack, account freeze, problems at the exchangeLose the seed phrase and the coins are gone for good
Best forActive tradersLong-term holders; you need a wallet that supports Ethereum networks

Our partner link. If you decide to open an OKX account, please sign up through it: it’s free for you and doesn’t change any terms. If you trade, the exchange pays Aspiro a referral bonus, which goes toward developing our apps and the free Aspiro Academy. We have no access to your account, funds or trades.

Open an OKX account via our link Step-by-step guide

  • ARB is bought on the spot market with USDT, ideally with a limit order.
  • KYC and 2FA first, then the deposit.
  • A stop-loss is mandatory if you trade.
  • Coins for the long term are safer in your own wallet, with the seed phrase kept offline.

Frequently Asked Questions

Why are fees on Arbitrum paid in ETH?

Arbitrum is a network on top of Ethereum, and it uses the same ether to pay for gas. ARB isn’t needed for that.

Then what is ARB for?

For voting in the Arbitrum DAO: holders decide what changes to make to the protocol and how to spend community funds.

What is a layer-2 network?

A network that processes transactions separately and records the result on Ethereum. This makes things cheaper and faster, while security relies on the main network.

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