eth_chainId - Linea RPC Method
Get the chain ID for Linea. Essential for transaction signing and network verification.
Returns the chain ID used for transaction signing on Linea.
Why Linea? Build on Consensys-backed zkEVM L2 with $1B+ TVL and 807% growth in 2025 with 15-30x lower fees than Ethereum mainnet, 6,200 TPS throughput, SWIFT integration with 12+ institutions, and $725M Consensys backing.
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
Request Parameters
This method accepts no parameters.
Response Body
Chain ID in hexadecimal
Code Examples
curl -X POST https://api-linea-mainnet-archive.n.dwellir.com/YOUR_API_KEY \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"method": "eth_chainId",
"params": [],
"id": 1
}'Related Methods
net_version- Get network versioneth_syncing- Check sync status
debug_traceTransaction
Trace a transaction execution on Linea. Requires archive node for debugging enterprise DeFi (Aave, Renzo), institutional cross-border payments via SWIFT pilots, and zkEVM-native applications.
eth_syncing
Check the sync status of your Linea node. Returns sync progress or false when fully synced — essential for node health monitoring and dApp reliability.