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To‑Do List DApp Stored on Blockchain

Why Choose This Project?

Traditional to-do list apps store data centrally, making it prone to data loss, tampering, or privacy issues. This blockchain-based To-Do List DApp ensures that all tasks are stored immutably on the blockchain, providing secure, transparent, and decentralized task management. Users can track, update, and share tasks while maintaining full ownership of their data.

What You Get

Complete Source Code (Frontend + Backend + Smart Contracts)
Fully Working User Panel for Task Management
Mobile & Desktop Responsive UI
Wallet-Based Login & Authentication (MetaMask)
Add, Edit, Complete, and Delete Tasks
Smart Contract Integration for Task Storage & Verification
Full Documentation & Setup Instructions
Ready for Real-World Deployment or Resale

Built With Latest Tech Stack

Layer	Technologies Used
Frontend	HTML5, CSS3, Bootstrap 5, JavaScript, React.js / Web3.js
Backend	Node.js (Express.js) / Optional off-chain metadata storage
Blockchain	Solidity, Ethereum (Testnet), Hardhat / Truffle
Wallet	MetaMask (Web3 Wallet Integration)
Storage	On-chain for tasks, optional IPFS for large attachments
Database	MongoDB / MySQL (optional for off-chain indexing)
Security	Role-based access, hashed data, input validation

Features That Make It Market-Ready

Decentralized Task Storage – Tasks stored immutably on blockchain
Wallet-Based Authentication – Login via MetaMask; secure and passwordless
Smart Contract Management – Add, edit, complete, or delete tasks securely
Task History & Verification – Immutable records of all task actions
User Dashboard – View tasks, statuses, and completed tasks
Optional Attachments – Store files linked to tasks on IPFS
Real-Time Updates – Dashboard refreshes with blockchain-confirmed changes
Scalable & Lightweight – Can handle multiple users and tasks without central server

Working Flow

User Connects Wallet
→ Login via MetaMask for identity verification
Add Task
→ User inputs task details
→ Task recorded on blockchain via smart contract
Update / Complete Task
→ User marks task as completed or edits content
→ Smart contract updates immutable record
Delete Task
→ Task removed for user interface
→ Smart contract logs deletion event immutably
Task Retrieval
→ Tasks fetched from blockchain for dashboard display
→ Optional off-chain indexing improves performance
Dashboard Update
→ Displays all active, completed, and deleted tasks with blockchain verification