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.
借助此 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)
- Subscribe to real-time events via WebSocket connections
您可以通过以下方式访问该 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
支持的网络
Quicknode provides access to the following Arbitrum networks:
Complete reference for developers building on Arbitrum with Quicknode:
快速入门
Get started with Arbitrum quickly. Follow our step-by-step quickstart to set up your endpoint and make your first API request.
提供商端点
Learn how to configure and manage your Arbitrum endpoints for optimal performance and reliability.
API 概述
了解受支持的 API、网络、Quicknode 产品以及增强的 API 功能，用于构建功能强大的应用程序。
市场
探索并集成来自 Quicknode 应用商店的强大插件和工具，以增强您的 Web3 应用程序。
终端安全
通过身份验证、白名单和最佳安全实践来保护您的终端设备。
错误代码
Understand common error codes and troubleshooting steps for Arbitrum API requests.