# Arbitrum Sepolia RPC and network details

Source: https://www.alchemy.com/rpc/arbitrum-sepolia

Arbitrum Sepolia is the official testnet for Arbitrum One, providing developers with a safe rollup environment to test apps and cross-chain interactions.

## Network details

- Network: Sepolia
- Chain ID: 421614
- Environment: Testnet
- Category: L2
- Native token: ARB
- Gas token: ETH
- Settlement: Ethereum Sepolia
- Block time: <1s

## Endpoints

- Alchemy RPC: https://arb-sepolia.g.alchemy.com/v2/API_KEY
- Alchemy WebSocket: wss://arb-sepolia.g.alchemy.com/v2/API_KEY

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

## Alchemy product support

Supported on Arbitrum Sepolia: RPC API, Transaction receipts API, User OP Simulation API, Debug API, Bundler API, Token API, NFT API, Websockets, Gas Manager, Webhooks, Transfers API.

Not currently supported: Block Timestamp API, Prices API, Trace API, gRPC.

## Build on Alchemy

Alchemy provides Arbitrum Sepolia RPC endpoints, so you can reliably test your code before shipping to mainnet. With a suite of devtools and data APIs, you have everything you need to confidently debug and harden your code.

## Available networks

- Arbitrum Mainnet: https://www.alchemy.com/rpc/arbitrum

## Links

- Alchemy docs: https://docs.alchemy.com/reference/arbitrum-api-quickstart
- Official docs: https://docs.arbitrum.io/welcome/get-started
- Website: https://arbitrum.io/
- GitHub: https://github.com/OffchainLabs
- Block explorer: https://sepolia.arbiscan.io
- Bridge: https://bridge.arbitrum.io/
- Faucet: https://www.alchemy.com/faucets/arbitrum-sepolia