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 is Arc? The economic OS for the internet, explained for developers
Arc is Circle's open, EVM-compatible Layer-1 for stablecoin finance. This guide covers USDC gas, deterministic finality, and what can break when you port a contract.
Advancing into the onchain consensus layer with Alchemy Validators
Announcing Alchemy Validators, the newest addition to our comprehensive web3 infrastructure suite
How Goldsky kept transactions flowing with zero downtime
Goldsky migrated its Compose bundler and paymaster to Alchemy and built a provider abstraction layer that makes failover a single environment variable change—no code deploy, no downtime.
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.
