Quick Start

Network Configuration

Network Information

JuChain Mainnet

Name	Value
Network Name	JuChain Mainnet
Description	JuChain Public Mainnet
RPC Endpoint	https://rpc.juchain.org wss://ws.juchain.org
Chain ID	210000
Currency Symbol	JU
Block Explorer	https://juscan.io

JuChain Testnet

Name	Value
Network Name	JuChain Testnet
Description	JuChain Public Testnet
RPC Endpoint	https://testnet-rpc.juchain.org ws://testnet-ws.juchain.org
Chain ID	202599
Currency Symbol	JU
Block Explorer	https://testnet.juscan.io

Hardhat​

Modify your Hardhat config file hardhat.config.ts to point at the Juchain Testnet public RPC.

const config: HardhatUserConfig = {
  ...
  networks: {
    jucoin: {
      url: "https://testnet-rpc.juchain.org" || "",
      accounts:
        process.env.PRIVATE_KEY !== undefined ? [process.env.PRIVATE_KEY] : [],
    },
  },
};

Foundry​

To deploy using the Juchain Testnet Public RPC, run:

forge create ... --rpc-url=https://testnet-rpc.juchain.org --legacy

Remix Web IDE​

After compiling your contracts, the easiest way to deploy using Remix is by setting up Metamask, then selecting the Juchain Testnet network.

In the “Deploy and Run Transactions” tab, use the “Environment” drop-down and select “Injected Provider - MetaMask.”

Connect your wallet and select the Juchain Testnet. Your account should be selected automatically in Remix, and you can click “Deploy.”

Truffle​

caution

The Truffle Suite is being sunset. For information on ongoing support, migration options and FAQs, visit the Consensys blog.

Assuming you already have a Truffle environment setup, go to the Truffle configuration file, truffle.js. Make sure to have installed HDWalletProvider: npm install @truffle/hdwallet-provider@1.4.0

const HDWalletProvider = require("@truffle/hdwallet-provider")
...
module.exports = {
  networks: {
    juchain: {
      provider: () =>
        new HDWalletProvider(process.env.PRIVATE_KEY, "https://testnet-rpc.juchain.org"),
      network_id: '202599',
    },
  }
}

Brownie​

To add the Juchain Testnet, run the following command:

brownie networks add Juchain host=https://testnet-rpc.juchain.org chainid=202599 

To set this as your default network, add the following in your project config file:

networks:
  default: Juchain

Another way to add the Juchain Testnet is to create a yaml file and run a command to add it.

This is an example of a yaml file called network-config.yaml

live:
- name: Juchain
 networks:
 - chainid: 202599
   explorer: https://testnet.juscan.io
   host: https://testnet-rpc.juchain.org
   id: juchain
   name: Juchain Testnet

To add the Juchain Testnet to the network list, run the following command:

brownie networks import ./network-config.yaml

To deploy on Juchain, run the following command. In this example, token.py is the script to deploy the smart contract. Replace this with the name of your script:

brownie run token.py --network Juchain

ethers.js​

Setting up a Juchain Testnet provider in an ethers script:

import { ethers } from "ethers"

const provider = new ethers.providers.JsonRpcProvider("https://testnet-rpc.juchain.org")

scaffold-eth​

To deploy using Scaffold-eth, you’ll need to point both your Hardhat and React settings at the Juchain Testnet.

Configure Hardhat​

In the packages/hardhat/hardhat.config.js file, you’ll add the network and select it as the default network.

...
//
// Select the network you want to deploy to here:
//
const defaultNetwork = "Juchain";
...
module.exports = {
...
	networks: {
...
          Juchain: {
            url: "https://testnet-rpc.juchain.org",
            accounts: {
              mnemonic: mnemonic(),
            },
          },
	}
...
}

Be sure to fund the deployment wallet as well! Run yarn generate to create the wallet and yarn account to check its funds. Once funded, run yarn deploy --network Juchain to deploy on the Juchain testnet.