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Quick Start

本页面介绍如何连接到 Japan Open Chain。

网络信息​

项目值
Network NameJapan Open Chain Mainnet
Chain ID81
Currency SymbolJOC
RPC URLhttps://rpc-1.japanopenchain.org:8545
Block Explorerhttps://explorer.japanopenchain.org

实现“添加网络”按钮​

如果要实现一个按钮，让用户一键将 Japan Open Chain 添加到 MetaMask，请使用以下代码。调用 wallet_addEthereumChain 方法后，MetaMask 会显示添加网络的确认对话框。

await window.ethereum.request({
  method: 'wallet_addEthereumChain',
  params: [{
    chainId: '0x51', // 81
    chainName: 'Japan Open Chain Mainnet',
    nativeCurrency: { name: 'JOC', symbol: 'JOC', decimals: 18 },
    rpcUrls: ['https://rpc-1.japanopenchain.org:8545'],
    blockExplorerUrls: ['https://explorer.japanopenchain.org']
  }]
});

通过代码连接​

ethers.js (v6)​

import { ethers } from 'ethers';

// Mainnet
const provider = new ethers.JsonRpcProvider('https://rpc-1.japanopenchain.org:8545');

// 确认连接
const blockNumber = await provider.getBlockNumber();
console.log('Current block:', blockNumber);

// 确认 Chain ID
const network = await provider.getNetwork();
console.log('Chain ID:', network.chainId); // 81n

web3.js​

import Web3 from 'web3';

const web3 = new Web3('https://rpc-1.japanopenchain.org:8545');

// 确认连接
const blockNumber = await web3.eth.getBlockNumber();
console.log('Current block:', blockNumber);

viem​

import { createPublicClient, http } from 'viem';
import { japanOpenChain } from 'viem/chains';

const client = createPublicClient({
  chain: japanOpenChain,
  transport: http(),
});

const blockNumber = await client.getBlockNumber();
console.log('Current block:', blockNumber);

下一步​