# opBNB RPC and network details

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

opBNB is Binance's OP-Stack L2, marrying Ethereum's security with BNB chain's large user funnel and deep liqudity. With a deep integration to Binance's infrastructure, opBNB is a fast onramp for consumer apps looking to reach a massive user base.

## Network details

- Network: Mainnet
- Chain ID: 204
- Environment: Mainnet
- Category: L2
- Gas token: opBNB
- Block time: 1s

## Endpoints

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

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

## Alchemy product support

Supported on opBNB: RPC API, Prices API, Debug API, Bundler API, Websockets, Gas Manager.

Not currently supported: Transaction receipts API, Block Timestamp API, User OP Simulation API, Trace API, Token API, NFT API, gRPC, Webhooks, Transfers API.

## Build on Alchemy

Alchemy provides reliable opBNB RPC endpoints optimized for enterprise-grade availability and scalability. In addition to industry-leading data availability, Alchemy offers a suite of tools for building on opBNB, including data streaming, enriched data APIs, and more.

## Available networks

- opBNB Testnet (testnet): https://www.alchemy.com/rpc/opbnb-testnet

## Links

- Alchemy docs: https://docs.alchemy.com/reference/opbnb-chain-api-quickstart
- Official docs: https://docs.bnbchain.org/bnb-opbnb/overview/
- Website: https://bnbchain.org/
- GitHub: https://github.com/bnb-chain/opbnb
- Block explorer: https://opbnbscan.com/
- Bridge: https://opbnb-bridge.bnbchain.org/deposit