Optimism is a Layer-2 network for scaling Ethereum. As an optimistic rollup, OP Mainnet moves computation and transactions offchain, assuming they're valid — while any malicious transaction can be challenged with a fault proof during the challenge period.

Yes. It's an optimistic rollup and fully EVM-compatible, so smart contracts port over from Ethereum with little or no change.

Is Optimism part of Ethereum?

Optimism is built on top of Ethereum but is not part of the Ethereum blockchain itself. It uses Ethereum for security by posting summaries of its blocks there for settlement.

How do I add Optimism to my wallet?

In Zerion you don't — OP Mainnet is enabled by default. Bridge or receive assets on Optimism and they appear in your portfolio automatically.

What are gas fees on Optimism?

Fees are paid in ETH and typically cost under a cent. Zerion shows the exact fee before you confirm.

How do I bridge to Optimism?

Pick Optimism as the destination in Zerion's swap tab and bridge from Ethereum or any supported chain — routing finds the cheapest path.

How do I swap tokens on Optimism?

Open Zerion's swap tab, pick the pair, and confirm. Optimism swaps route at the best available price.

Crypto Wallet for Optimism

The safest and easiest wallet for OP Mainnet — tokens, DeFi positions, and NFTs on Optimism, tracked automatically.

Get Zerion Wallet Track any wallet

Self-custodial
Ledger support
Audited

Optimism in a self-custodial wallet

Zerion tracks Optimism the same way it tracks every other network it supports — automatically, and without giving up your keys.

Mainnet

Network status

Block time

Chain ID

What is an Optimism wallet?

An Optimism wallet manages assets on OP Mainnet — ETH for gas, ERC-20 tokens, and NFTs. Zerion is a self-custodial Optimism wallet: the keys stay yours, OP Mainnet is on by default, and one address spans the Superchain and 65 other networks.

Everything you hold on Optimism

Tokens, DeFi positions, and NFTs on Optimism — found, priced, and grouped without any setup.

Zerion Wallet token list showing ETH and OP balances with 24-hour price changes — Any token
Added automatically, with live prices and per-token profit and loss.

A Velodrome farming position on Optimism in Zerion Wallet, with its staked assets and rewards itemised — DeFi positions
Including LPs, staked assets, deposits, and unclaimed rewards.

The NFTs tab in Zerion Wallet showing Optimism collectibles with their names and values — NFTs on Optimism
Added automatically, with floor prices alongside your tokens.

Built into
your browser.

One extension for every onchain app. Or the full web app, in any browser.

Self-custodial by design.
Ledger support for extra safety.

Add to browser Open web app

How to use Zerion on Optimism

No RPC settings, no network to add by hand.

1
Install Zerion
Get the app on iOS or Android, or add the browser extension. Import an existing wallet or create a new one in seconds.
Get the app
2
Bring assets to Optimism
Bridge or receive assets on Optimism. It's enabled by default — there's nothing to configure first.
3
Everything appears on its own
Tokens, DeFi positions, and NFTs on Optimism are found, priced, and added to your portfolio automatically.

Any token

Every Optimism token, added automatically

Your Optimism balances appear on their own — no contract addresses to paste, no token lists to import.

New tokens show up as soon as they land in your wallet
Live prices and per-token profit and loss
Optimism sits alongside your other 65 chains in one portfolio

Zerion Wallet token list — balances across all networks with live prices and 24-hour change

DeFi positions

Your Optimism DeFi, found for you

LPs, staked assets, lending positions, and unclaimed rewards across 4,500+ protocols — detected and valued without any setup.

Liquidity pool and staked positions with current value
Debts and rewards included, not just token balances
Group your holdings by protocol

Zerion Wallet holdings grouped by protocol, with an Aave V3 lending position and its value

Swap & bridge

Bridge and swap in one go

Routing across DEXes and aggregators finds the best available price, and moves value onto or off Optimism in a single flow.

Best rates sourced across multiple liquidity venues
Bridge to and from Optimism without a separate bridge app
See the outcome before you sign

Zerion Wallet swap screen — ETH to USDT with the network fee, slippage, and routing provider shown before signing

History & NFTs

Transaction history you can read

Every Optimism transaction in one decoded feed, in plain language rather than raw calldata — with your NFTs in the same wallet.

Optimism activity in the same feed as every other chain
Swaps, bridges, approvals, and mints, labelled
NFTs on Optimism added automatically

Zerion Wallet history tab — sends, receives, and trades across every network, each labelled in plain language

What makes Optimism different?

Optimism, also known as OP Mainnet, is a Layer-2 network for scaling Ethereum built on the open-source OP Stack — the same stack that powers Unichain, World Chain, Ink, Soneium, Zora, and a growing set of other chains.

Developed by the Optimism Collective, OP Mainnet is an optimistic rollup: it moves computation and transactions offchain and posts summaries of the changes to Ethereum. It is called optimistic because those transactions are assumed valid unless challenged with a fault proof during the challenge period.

Optimism also pioneered Retroactive Public Goods Funding. RetroPGF funds projects that create value for Optimism and its users, which increases demand for L2 blockspace, which produces sequencer revenue — revenue then shared back through RetroPGF, creating a flywheel.

Optimism's OP Stack is the shared codebase behind the Superchain — Unichain, World Chain, Ink, Soneium, Zora, and other interoperable L2s. Assets and addresses behave consistently across them, which is why a wallet that treats them as one system matters: Zerion shows your Superchain holdings side by side and moves value between them in one flow.