Arbitrum RPC
What is Arbitrum?
Arbitrum is a Layer 2 scaling solution for Ethereum that uses optimistic rollup technology to reduce transaction costs and increase throughput while maintaining Ethereum's security. Built by Offchain Labs, Arbitrum processes transactions off-chain and submits compressed batches to Ethereum mainnet, achieving up to 90% lower gas fees and faster confirmation times.
Arbitrum operates using an optimistic execution model. It assumes transactions are valid by default but includes a 7-day challenge period where validators can dispute fraudulent transactions through an interactive fraud-proof system. This design allows Arbitrum to inherit Ethereum's security guarantees while providing a fully EVM-compatible environment where existing Solidity smart contracts and dApps can deploy without modification.
The network uses ArbOS, a custom operating system that manages the execution environment and handles cross-chain messaging through its retryable tickets system, enabling communication between L1 and L2.
Interacting with Arbitrum
The Arbitrum JSON-RPC API extends the standard Ethereum JSON-RPC interface with Layer 2-specific functionality. Since Arbitrum maintains byte-level EVM compatibility, developers can use familiar tools like Ethers.js and Foundry without modification.
透過此 API，您可以：
- Execute all standard Ethereum JSON-RPC methods (eth_call, eth_sendTransaction, etc.)
- Access Arbitrum-specific methods for L2 operations (arbtrace_block, arbtrace_replayTransaction)
- 透過 WebSocket 連線訂閱即時事件
您可以透過以下方式存取 API：
- Running a local Arbitrum node (Nitro client)
- Using a hosted provider such as a Quicknode Arbitrum endpoint, which provides instant access to both Arbitrum One and Arbitrum Nova networks with built-in reliability and archive data support
支援的網路
Quicknode provides access to the following Arbitrum networks:
Complete reference for developers building on Arbitrum with Quicknode:
快速入門
Get started with Arbitrum quickly. Follow our step-by-step quickstart to set up your endpoint and make your first API request.
供應商端點
Learn how to configure and manage your Arbitrum endpoints for optimal performance and reliability.
API 概覽
探索受支援的 API、網路、Quicknode 產品以及增強的 API 功能，以建置功能強大的應用程式。
市集
探索並整合來自 Quicknode 市集的強大外掛程式與工具，以強化您的 Web3 應用程式。
端點安全
透過身分驗證、白名單機制及最佳安全實務，確保您的端點安全。
錯誤代碼
Understand common error codes and troubleshooting steps for Arbitrum API requests.