01 Nov 2025

Create & Deploy Blockchain Voting DApp Using Next.js, Solidity & Ethers.js | Voting DApp Project

Daulat Hussain

The podcast details the creation of a decentralized voting application using Next.js, React, and Solidity. It explains how to set up the development environment, including installing Hardhat, and outlines the folder and file structure for the project. The discussion covers writing smart contracts for candidate and voter registration, implementing voting functionality, and deploying the application to a test network. It also describes how to use React Context API for state management and Web3 for connecting to the blockchain, including uploading images to IPFS. The podcast emphasizes the importance of error handling and troubleshooting common issues during development, such as chain ID mismatches and gas estimation problems.

Outlines

Part 1: Project Introduction and Demo

Part 2: Environment Setup and Frontend Architecture

Part 3: Smart Contract Development

Part 4: Deployment and Blockchain Integration

Part 5: Wallet Connectivity and State Management

Part 6: Voter Registration and IPFS Integration

Part 7: UI Styling and Layout Refinement

Part 8: Backend Logic and Error Resolution

Part 9: Candidate Management and Final Voting UI

Continue

Preview

How to Get Rich: Every EpisodeNaval

Create & Deploy Blockchain Voting DApp Using Next.js, Solidity & Ethers.js | Voting DApp Project

Daulat Hussain

Part 1: Project Introduction and Demo

00:00Decentralized Voting Application: Organizing Elections on the Blockchain

Decentralized Voting Application: Organizing Elections on the Blockchain

00:46Creating Voters and Casting Ballots in a Decentralized Voting System

Creating Voters and Casting Ballots in a Decentralized Voting System

02:00Voting Process and Error Handling in a Decentralized Application

Voting Process and Error Handling in a Decentralized Application

03:21Project Overview: Smart Contracts, ReactJS, and Decentralized Application Deployment

Project Overview: Smart Contracts, ReactJS, and Decentralized Application Deployment

Part 2: Environment Setup and Frontend Architecture

03:58Setting Up a Next.js Application and Cleaning Up Default Files

Setting Up a Next.js Application and Cleaning Up Default Files

05:58Structuring Components, Context, and Logic in a Next.js Application

Structuring Components, Context, and Logic in a Next.js Application

07:53Creating Pages and Installing Hardhat for Smart Contract Development

Creating Pages and Installing Hardhat for Smart Contract Development

10:07Configuring Hardhat for Local Smart Contract Testing

Configuring Hardhat for Local Smart Contract Testing

12:27Structuring Smart Contract Files and Preparing for Development

Structuring Smart Contract Files and Preparing for Development

14:28Launching the Application and Setting Up Global CSS Styles

Launching the Application and Setting Up Global CSS Styles

Part 3: Smart Contract Development

16:17Defining the Candidate Struct and Event in the Smart Contract

Defining the Candidate Struct and Event in the Smart Contract

19:25Structuring Voter Data and Events in the Smart Contract

Structuring Voter Data and Events in the Smart Contract

22:25Setting Up the Constructor and Initial Checks for Candidate Creation

Setting Up the Constructor and Initial Checks for Candidate Creation

24:17Implementing Candidate Registration Logic and Emitting Events

Implementing Candidate Registration Logic and Emitting Events

28:52Implementing Functions to Retrieve Candidate Data and Create Voters

Implementing Functions to Retrieve Candidate Data and Create Voters

32:35Implementing Voter Creation Logic and Resolving Smart Contract Errors

Implementing Voter Creation Logic and Resolving Smart Contract Errors

34:39Completing Voter Creation Logic and Event Emission

Completing Voter Creation Logic and Event Emission

38:16Implementing the Voting Function and Updating Voter/Candidate Data

Implementing the Voting Function and Updating Voter/Candidate Data

41:33Implementing Functions to Retrieve Voter Data and Finalizing the Smart Contract

Implementing Functions to Retrieve Voter Data and Finalizing the Smart Contract

Part 4: Deployment and Blockchain Integration

44:53Deploying the Smart Contract and Configuring Constants

Deploying the Smart Contract and Configuring Constants

47:55Retrieving Contract ABI and Setting Up Constants for Frontend Communication

Retrieving Contract ABI and Setting Up Constants for Frontend Communication

51:03Setting Up the Voter Context and Importing Dependencies

Setting Up the Voter Context and Importing Dependencies

53:36Creating the Fetch Contract Function and Setting Up the Context Provider

Creating the Fetch Contract Function and Setting Up the Context Provider

55:32Wrapping the Application with the Context Provider and Importing Components

Wrapping the Application with the Context Provider and Importing Components

57:04Testing the Context API and Troubleshooting Errors

Testing the Context API and Troubleshooting Errors

Part 5: Wallet Connectivity and State Management

1:00:08Setting Up State Variables for Candidate and Voter Data

Setting Up State Variables for Candidate and Voter Data

1:03:25Implementing the CheckIfWalletIsConnected Function

Implementing the CheckIfWalletIsConnected Function

1:07:16Implementing the ConnectWallet Function and Setting Up Image Upload

Implementing the ConnectWallet Function and Setting Up Image Upload

Part 6: Voter Registration and IPFS Integration

1:10:21Setting Up the Allow Voters Component and Defining State Variables

Setting Up the Allow Voters Component and Defining State Variables

1:13:33Implementing Image Upload and Dropzone Functionality

Implementing Image Upload and Dropzone Functionality

1:15:57Building the JSX Structure for the Allow Voters Component

Building the JSX Structure for the Allow Voters Component

1:18:53Completing the JSX Structure and Adding Dynamic Content

Completing the JSX Structure and Adding Dynamic Content

1:20:19Setting Up Input Fields and Integrating the Input Component

Setting Up Input Fields and Integrating the Input Component

1:24:05Styling the Input Component and Passing Props

Styling the Input Component and Passing Props

1:27:03Implementing Dynamic Input Rendering and Handling User Input

Implementing Dynamic Input Rendering and Handling User Input

1:30:48Styling the Input Component and Adding the Authorize Voter Button

Styling the Input Component and Adding the Authorize Voter Button