Linea RPC Endpoints

Dwellir provides Linea RPC endpoints at https://api-linea-mainnet-archive.n.dwellir.com/<your-api-key> for mainnet (Chain ID 59144). The Linea Sepolia testnet uses Chain ID 59141. Replace <your-api-key> with the key from your Dwellir dashboard.

Yes. WebSocket endpoints are available at wss://api-linea-mainnet-archive.n.dwellir.com/<your-api-key> for mainnet. Use WebSockets for real-time subscriptions like eth_subscribe for new blocks, pending transactions, and log events.

Yes. Dwellir's Linea mainnet endpoints run archive nodes, providing full historical state access. You can query balances, call contracts, and trace transactions at any past block height using methods like eth_call, eth_getBalance, and debug/trace APIs.

1. Sign up at dwellir.com and retrieve your API key from the dashboard. 2. Replace your current RPC URL (e.g., https://rpc.linea.build) with https://api-linea-mainnet-archive.n.dwellir.com/<your-api-key>. 3. For WebSocket connections, use wss://api-linea-mainnet-archive.n.dwellir.com/<your-api-key>. The API is fully compatible with standard Ethereum JSON-RPC methods.

Linea Mainnet uses Chain ID 59144 with ETH as the native token and ~2-4 second block times. Linea Sepolia testnet uses Chain ID 59141. As a zkEVM, Linea uses zero-knowledge proofs for state validation rather than fraud proofs, enabling faster finality than optimistic rollups. Linea is developed by Consensys and reached 100% proven status in 2025. Block explorer: lineascan.build.

Dwellir's Linea endpoints are fully compatible with standard EVM tooling including Web3.js, ethers.js, viem, and Web3.py. Development frameworks like Hardhat, Foundry, and Truffle work seamlessly. As a fully EVM-equivalent zkEVM, Linea supports the same bytecode as Ethereum mainnet. Simply configure your provider with the Dwellir RPC URL and your API key.

Linea has two finality stages: Soft finality (~2 seconds) occurs when the sequencer confirms your transaction on L2—this is when balances update and contracts execute. Hard finality (6-32 hours, improving to near-zero) occurs when the zk-proof is verified on Ethereum L1 and two epochs pass. For most dApp use cases, soft finality is sufficient. Hard finality matters for bridges, large withdrawals, or when you need cryptographic proof that a transaction is irreversible. Unlike optimistic rollups, Linea has no 7-day challenge period.

Linea uses zero-knowledge proofs (zk-SNARKs) to validate state transitions, while optimistic rollups assume transactions are valid unless challenged. Key differences: 1) Finality: Linea achieves hard finality in hours vs. 7 days for optimistic rollups, 2) Withdrawals: No challenge period needed—once proven, withdrawals can finalize quickly, 3) Security model: Math-based verification vs. economic game theory, 4) Cost tradeoff: ZK proof generation is compute-intensive but improves over time. For developers, the EVM experience is identical; differences mainly affect bridging timing and infrastructure costs.