DApps 🌐⛓️

1. What is a DApp?

A DApp is an application that runs on a blockchain network instead of centralized servers.

2. Architecture

Frontend → Web3.js → Smart Contract → Blockchain ⛓️

3. Key Features

Decentralized ⛓️
Transparent 👁️
Immutable 🔒
No middleman ❌

4. Components

Frontend → React / HTML
Smart Contracts → Solidity
Blockchain → Ethereum
Wallet → MetaMask 🦊

5. How DApps Work

User clicks UI
→ Web3.js sends request
→ Smart contract executes
→ Blockchain stores result

6. Types of DApps

DeFi → Finance apps 💰
NFT Apps → Digital assets 🖼️
Gaming → Play-to-earn 🎮
Social DApps → Decentralized social media 📱

7. Example DApp

1. User connects wallet
2. Sends transaction
3. Smart contract executes
4. Result stored on blockchain

8. Benefits

No censorship 🚫
High security 🔐
User ownership 🧑‍💻
Global access 🌍