# OP Mainnet RPC and network details

Source: https://www.alchemy.com/rpc/optimism

OP Mainnet (Optimism) is an optimistic rollup built on the OP Stack, pairing low fees with a governance model that funnels sequencer revenue into public-goods funding. It anchors a fast-growing ecosystem of L2-native apps and is the backbone of the Superchain, a collective of L2 blockchains all built using the OP Stack.

## Network details

- Chain ID: 10
- Environment: Mainnet
- Category: L2
- Native token: OP
- Gas token: ETH
- Settlement: Ethereum
- Block time: 1-2s

## Endpoints

- Alchemy RPC: https://opt-mainnet.g.alchemy.com/v2/API_KEY
- Alchemy WebSocket: wss://opt-mainnet.g.alchemy.com/v2/API_KEY

Replace API_KEY with a key from https://dashboard.alchemy.com/signup.

## Alchemy product support

Supported on OP Mainnet: RPC API, Transaction receipts API, Block Timestamp API, User OP Simulation API, Prices API, Debug API, Trace API, Bundler API, Token API, NFT API, Websockets, Gas Manager, Webhooks, Transfers API.

Not currently supported: gRPC.

## Build on Alchemy

Alchemy offers high-performance Optimism RPC endpoints that ensure consistent uptime for production-grade rollup applications. Along with reliable data, Alchemy makes it easy to build, monitor, and scale apps on Optimism with a range of devtools, including analytics dashboards, smart notification tools, and gas sponsorship.

## Available networks

- OP Mainnet Sepolia (testnet): https://www.alchemy.com/rpc/optimism-sepolia

## Links

- Alchemy docs: https://docs.alchemy.com/reference/optimism-api-quickstart
- Official docs: https://docs.optimism.io/
- Website: https://optimism.io/
- GitHub: https://github.com/ethereum-optimism
- Block explorer: https://optimistic.etherscan.io
- Bridge: https://app.optimism.io/bridge/deposit
- Faucet: https://www.alchemy.com/faucets/optimism-sepolia