⚡ EtherVault

Stake ETH, Earn VGB - A Modern DeFi Staking Platform

📺 Demo Video

🚀 Project Overview

EtherVault is a decentralized finance (DeFi) platform that allows users to stake Ethereum (ETH) and earn Vagabond (VGB) tokens as rewards. The project demonstrates a complete staking ecosystem with a React frontend and Solidity smart contracts.

Key Features:

• 🔒 Secure ETH Staking: Stake your ETH securely with minimum 0.01 ETH
• 💎 VGB Token Rewards: Earn VGB tokens at 10% APR
• ⏱️ No Lock-up Period: Withdraw your ETH anytime
• 📈 Time-weighted Rewards: Longer stakes = Higher rewards
• 🎨 Modern UI: Clean, responsive interface with real-time updates

💻 Technology Stack

Frontend

• React with Vite
• Wagmi/Viem for blockchain interactions
• Material UI for sleek components
• Framer Motion for animations

Backend (Smart Contracts)

• Solidity ^0.8.28
• OpenZeppelin contracts for security
• Foundry for development and testing

📊 Smart Contract Architecture

// Staking Contract - Handles ETH staking and VGB rewards
contract StakingContract {
    mapping(address => uint256) public Balances;
    
    // Core Functions
    function stake() external payable;
    function unstake(uint256 _amount) external;
    function getRewards(address _address) external view returns (uint256);
    function claimRewards() external;
}

// VGB Token - ERC20 token for rewards
contract VagabondCoin is ERC20 {
    address public stakingContract;
    
    constructor(address _stakingContract) ERC20("Vagabond", "VGB") {
        stakingContract = _stakingContract;
    }
}

💰 Reward System

Rewards are calculated using a time-weighted formula:

// Time-weighted reward calculation
reward = (stakedAmount * 10 * stakingDuration) / (365 days * 100)

Stake Amount	Duration	VGB Reward
1 ETH	30 days	0.0082 VGB
5 ETH	90 days	0.123 VGB
10 ETH	180 days	0.493 VGB

🛡️ Security Features

• ✅ Reentrancy Protection: Guards against reentrant attacks
• ✅ Pausable: Emergency stop functionality
• ✅ Access Control: Owner-only sensitive functions
• ✅ Emergency Withdrawal: Recovery of stuck funds
• ✅ Integer Overflow Protection: Safe math operations

🔧 Getting Started

# Clone the repository
git clone https://github.com/YourUsername/EtherVault.git
cd EtherVault

# Install frontend dependencies
cd frontend
npm install

# Start frontend development server
npm run dev

# Setup backend (in another terminal)
cd backend
forge install
forge build

🌐 Deployment

The project is deployed on the Sepolia testnet: https://sepolia.etherscan.io/address/0xA685c85311B78C9319c397252d6CCDcd58EdcB59#code https://sepolia.etherscan.io/address/0xd01c85418F6Bf3b945ea1668E4Dfd4D4361Ab58D