Smart Contracts 📜⛓️

1. What is a Smart Contract?

A smart contract is a self-executing program stored on a blockchain that runs when predefined conditions are met.

2. How It Works

If condition = true → execute action automatically
No human needed 🤖

3. Execution Flow

User → Smart Contract → Blockchain → Auto Execution → Result

4. Key Features

Automated 🤖
Immutable 🔒
Transparent 👁️
Decentralized ⛓️

5. Programming Language

Solidity → Main Ethereum language

6. Simple Logic Example

If payment received:
    transfer product ownership
Else:
    reject transaction

7. Use Cases

• DeFi (Loans, trading) 💰
• NFT ownership 🖼️
• Voting systems 🗳️
• Supply chain tracking 🚚

8. Benefits

No middleman ❌
Fast execution ⚡
Secure 🔐
Trustless system 🤝