Ethereum, scaled.
OP Mainnet is a low-cost and lightning-fast Ethereum L2 blockchain powered by Optimism.
Fast, stable, scalable Ethereum.
OP Mainnet is a fast, stable, and scalable L2 blockchain built by Ethereum developers, for Ethereum developers. Built as a minimal extension to existing Ethereum software, OP Mainnet's EVM-equivalent architecture scales your Ethereum apps without surprises. If it works on Ethereum, it works on OP Mainnet at a fraction of the cost.
OP Mainnet goes Superchain
The Superchain project seeks to maximize interoperability and composability between different chains using the OP Stack, and integrate siloed L2s into a single, cohesive layer.
The Superchain
Building towards a unified future that doesn’t fracture our ecosystems, our applications, or our ability to work together.
Get in touchBuilt for the public good.
OP Mainnet is more than just a blockchain. It's an experiment in sustainable ecosystem funding fueled by protocol revenue. Retroactive Public Goods Funding is simple: you build for the public good, you're eligible to receive a grant. Join us on Discord and help build the future of Ethereum, sustainably.
Developer resources
Everything you need to get started building on OP Mainnet, all in one place.