OP Mainnet
OP Mainnet is Optimism's flagship Ethereum Layer 2 blockchain, powered by the OP Stack and optimistic rollups.
What is OP Mainnet?
OP Mainnet is Optimism's flagship Ethereum Layer 2 blockchain, founded in 2019. It processes transactions in batches using optimistic rollups, giving users access to low-cost and near-instantaneous transactions. OP Mainnet is part of the broader Optimism ecosystem powered by the OP Stack, a fully open-source, modular framework for launching blockchains. The OP Stack powers 50+ chains, processes 17M transactions per day, and secures $14B in total assets. OP Mainnet itself offers 99.99% uptime and an average transaction fee of $0.001, providing a seamless pathway from building an app to launching a full-service chain.
Web3 dapps and developer tools related to OP Mainnet
Discover blockchain applications that are frequently used with OP Mainnet.
Alchemy
Uniswap
OKX
Bybit
Developer resources from Alchemy
What are layer 2 blockchains?
Explore the world of L2 blockchains and how this scaling solution is driving onchain innovation.
What is maximum extractable value and MEV protection?
Explore the tactics of MEV and how you can protect your users from unfair trade manipulation.
Kaia support is live on Alchemy
Alchemy has launched native support for Kaia, an EVM-compatible Layer 1 built for stablecoin settlement and onchain finance across Asia.
OP Mainnet alternatives
Explore web3 competitors and apps like OP Mainnet.
Base
Arbitrum
Polygon
StarknetApp store listings are independently reviewed and written by Alchemy using a combination of inbound submissions, editorial research, public project sources, and third-party directories, including ecosystem data from The Grid under the Open Database License, DefiLlama, DappRadar, Reown, and chain ecosystem pages.
