Скачать или смотреть ⛓️ VeriChain: Full-Stack 2-Factor Wallet Authentication(BLOCKQUEST 2025)

In this video, I built a complete, full-stack 2-Factor Authentication (2FA) system from scratch. This isn't your standard 2FA! We'll combine a classic email & password login with a secure, cryptographic wallet signature.

This project, "VeriChain," demonstrates how to add a powerful layer of web3 security to any application. We'll force users to prove they own their crypto wallet (Factor 2) after they've already passed their password check (Factor 1). I'll walk you through the entire flow, from the React frontend to the Node.js backend.

✨ Core Features You'll See:

🔐 True 2FA: A hybrid system using Email/Password + Wallet Signature.

⛓️ Sign-in with Ethereum: How to generate a secure, one-time message (nonce) on the backend for the user to sign.

🚀 Secure Sessions: We'll use JSON Web Tokens (JWT) to create protected API routes and a secure dashboard.

📈 Persistent Login History: We'll connect our Node.js server to a MongoDB database to log every successful login.

📂 Full Monorepo Structure: See how to manage both the frontend and backend code in one GitHub repository.

🛠️ Tech Stack Used:

Frontend:

React (with Vite)

Ethers.js (For connecting to MetaMask & signing messages)

Tailwind CSS (For all the styling)

React Router (For client-side & protected routes)

react-hot-toast (For notifications)

Backend:

Node.js

Express (For the REST API)

MongoDB (with Mongoose, to store login history)

JSON Web Tokens (JWT) (For session management)

Ethers.js (For cryptographically verifying the wallet signature)

cors, dotenv

📂 Get the Code: Check out the full, open-source code on my GitHub and try it yourself! https://github.com/Vaibhavi-source/ve...