I can walk you through this process, but first I need to clarify a few things.
What are DApps (decentralized applications)?
DApps are applications built on blockchain networks such as Ethereum, Polkadot, or Solana. They run on decentralized protocols and allow users to interact with each other without relying on central authorities like wallets.
Can you build a DA app without Metamask?
Yes, it is possible to build a DApp that doesn’t use MetaMask at all. However, you will need to choose a different method for user authentication and interaction with the blockchain.
Here are some popular options:
- Mist (formerly MetaMask)
: While Mist provides access to the Ethereum blockchain, you can still build a custom app without using it directly.
- Ledger Wallet: You can use the Ledger Wallet as a central authority and interact with the blockchain via the web interface or mobile app.
- Ethereum CLI: The
eth-cli
package allows you to run Ethereum contracts from the command line, allowing you to interact with the blockchain without a wallet.
Now let’s dive into creating a DApp that doesn’t use MetaMask at all.
Step 1: Choose an EVM-based framework
To build your DApp, you need to choose an EVM (Ethereum Virtual Machine) framework that allows you to run Ethereum contracts. Some popular options include:
- Ethereum.js: A JavaScript library that provides an easy way to interact with the blockchain.
- Truffle Suite: An integrated development environment (IDE) for building, testing, and deploying DApps on the Ethereum network.
In this example, we will use the file “Ethereum.js”
Step 2: Configure the EVM Framework
Install ethers.js
(formerly web3.js
) as a dependency in your project:
npm install ethers.js
Then create a new file calledindex.jsand add the following code to configure the EVM framework:
const Web3 = request('ethers.js');
// Create a new Ethereum provider (for example, local machine or remote node)
const provider = new Web3.providers.WebsocketProvider("wss://example.com/webSocketUrl");
// Get an instance of the provider and sign it with your private key
const web3 = new Web3(provider);
// Set up the EVM framework
const myEthers = new ethers.Contract('Contract HERE', 'Contract Source Code');
Replace "ABI Contract" with the actual name of the contract you want to interact with, and "Contract Source Code" with the actual name of the contract you want to interact with.
Step 3: Define the DApp's Functions
Create a new file called "Contract.js" (or any other file that contains the contract code) and add the following code:
pragma solidity ^0.8.0;
contract MyDapp {
address public centralEthereumAddress = "0x...your-central-ethereum-address..."; // Replace with your central Ethereum address
function callFunction() public payable {
// Call the contract function with the payable argument (e.g. to transfer Ether);
myEthers.transfer(centralEthereumAddress, 1 ether);
} }
} }
Replace "MyDapp" with the actual name of your DApp contract.
Step 4: Use the EVM framework in your React app
Now that you have set up the EVM framework and defined your DApp functions, you can use it in your React app. Here is an example:
import React from 'react';
import ReactDOM from 'react-dom';
import { ethers } from './Contract';
function App() {
return (
MyDapp
);
} }
ReactDOM.render( , document.getItemById('root'));
Replace ./Contract` with the actual path to your contract file.
That’s it! You now have a basic example of a DApp that doesn’t use MetaMask at all.