connecting-to-base-network

Connecting to Base Network Mainnet Property Value Network Name Base Chain ID 8453 RPC Endpoint https://mainnet.base.org Currency ETH Explorer https://basescan.org Testnet (Sepolia) Property Value Network Name Base Sepolia Chain ID 84532 RPC Endpoint https://sepolia.base.org Currency ETH Explorer https://sepolia.basescan.org Security Never use public RPC endpoints in production — they are rate-limited and offer no privacy guarantees; use a dedicated node provider or self-hosted node Never embed RPC API keys in client-side code — proxy requests through a backend to protect provider credentials Validate chain IDs before signing transactions to prevent cross-chain replay attacks Use HTTPS RPC endpoints only — reject any http:// endpoints to prevent credential interception Critical Notes Public RPC endpoints are rate-limited - not for production For production: use node providers or run your own node Testnet ETH available from faucets in Base documentation Wallet Setup Add network with chain ID and RPC from tables above For testnet, use Sepolia configuration Bridge ETH from Ethereum or use faucets