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What Is Optimism?

Optimism is an Ethereum layer-2 scaling solution that uses optimistic rollup technology to provide faster and cheaper transactions while inheriting Ethereum's security. Originally launched in 2021 by OP Labs, the Optimism network (also called OP Mainnet) has grown into one of the largest Ethereum L2s and spawned an entire ecosystem of chains built on its open-source OP Stack.

As an optimistic rollup, Optimism bundles hundreds of transactions together off-chain, executes them, and posts the compressed results back to Ethereum. Transactions are assumed valid by default, but anyone can submit a fraud proof during a challenge window if they detect an invalid state transition. This approach provides significant cost savings — typically 10-100x cheaper than Ethereum mainnet — while maintaining Ethereum-grade security.

The OP Stack is Optimism's open-source modular framework for building L2 chains. It has been adopted by major projects to launch their own chains, most notably Coinbase (Base), which has become one of the most active L2s. Other chains built on the OP Stack include Worldcoin's World Chain, Sony's Soneium, and Zora Network. Together, these chains form the Superchain, a network of interoperable L2s that share security, communication standards, and a common technology stack.

Optimism is governed by the Optimism Collective, a two-house governance system:

  • Token House: OP token holders vote on protocol upgrades, incentive programs, and governance proposals.
  • Citizens' House: A reputation-based body that governs Retroactive Public Goods Funding (RetroPGF), allocating funds to projects that have provided value to the ecosystem.

RetroPGF is a distinctive feature of Optimism's approach. The principle is that it is easier to evaluate impact after the fact than to predict it. By funding public goods retroactively, Optimism creates strong incentives for developers and contributors to build valuable open-source tools and infrastructure.

OP is the governance token used for voting in the Token House and participating in the network's decentralized governance. Revenue from L2 transaction fees flows to the Optimism Collective's treasury to fund ongoing development and public goods.

Getting Started With Optimism

Getting started with Optimism is easy for Ethereum users:

  1. Step 1: Set up MetaMask or another EVM-compatible wallet and add the OP Mainnet network (many wallets support it natively).
  2. Step 2: Bridge ETH from Ethereum to OP Mainnet using the official Optimism Bridge or a third-party bridge like Across or Stargate.
  3. Step 3: Use ETH to pay for gas and interact with dApps on Optimism.
  4. Step 4: Explore DeFi protocols, NFT platforms, and other applications on the network.

Gas fees on Optimism are very low, typically a few cents per transaction, making it accessible for everyday DeFi use.

How to Get an Optimism Wallet?

MetaMask

MetaMask supports OP Mainnet natively and is the most commonly used wallet. Simply switch to the Optimism network in MetaMask to interact with the ecosystem.

Rabby Wallet

Rabby is a browser extension wallet that supports Optimism and many other EVM chains, automatically detecting which network a dApp requires.

Coinbase Wallet

Coinbase Wallet supports Optimism natively, offering seamless access to both OP Mainnet and Base (also built on the OP Stack).

Hardware Wallets

Ledger hardware wallets work with Optimism through MetaMask, providing offline key storage for enhanced security.

Optimism Resources

How to Buy OP?

OP is widely available on major exchanges:

Centralized Exchanges

OP can be purchased on Coinbase, Binance, Kraken, OKX, and most other major exchanges with fiat or crypto trading pairs.

Decentralized Exchanges

OP can be purchased on DEXs on OP Mainnet like Velodrome, or on Ethereum mainnet via Uniswap.

After purchasing, OP can be used for governance voting in the Token House or delegated to active governance participants.

Latest Optimism News

Optimism continues to expand the Superchain vision with more chains launching on the OP Stack, growing cross-chain interoperability, and ongoing RetroPGF rounds funding public goods. The network benefits from the growth of Base and other OP Stack chains, which contribute to the shared ecosystem.