eth_chainId - World Chain RPC Method

Get the chain ID for World Chain. Essential for transaction signing and network verification.

Returns the chain ID used for transaction signing on World Chain.

Why World Chain? Build on the human-first Ethereum L2 powered by World ID with World ID integration for free gas and priority blockspace.

Use Cases

The eth_chainId method is essential for:

Transaction signing - Ensure transactions are signed for the correct network
Network verification - Confirm connection to the expected chain
Multi-chain apps - Handle different networks programmatically
Wallet integration - Validate network before transactions

Code Examples

Bash

curl -X POST https://api-worldchain-mainnet.n.dwellir.com/YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_chainId",
    "params": [],
    "id": 1
  }'

net_version - Get network version
eth_syncing - Check sync status

debug_traceTransaction

Trace a transaction execution on World Chain. Requires archive node for debugging human-verified DeFi, identity-gated applications, bot-resistant services.

eth_syncing

Check the sync status of your World Chain node. Returns sync progress or false when fully synced — essential for node health monitoring and dApp reliability.

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