SEQICO Smart Contract Deployment

A Hardhat project for deploying the SEQICO ICO smart contract and SEQ token.

Overview

This project contains:

• SEQICO.sol: The main ICO contract allowing token purchases with ETH, USDT, and USDC
• SEQToken.sol: The ERC20 token contract
• Deployment scripts: Two deployment scripts with different configurations

Features

SEQICO Contract

• Buy SEQ tokens with ETH, USDT, or USDC
• Configurable pricing for each payment method with minimum price validation
• Owner-only functions for token management and fund withdrawal
• Automatic ETH refunds for overpayments
• Event logging for all purchases
• Price validation: Minimum price requirements enforced:
  • ETH: minimum 3 ether (3 × 10¹⁸ wei)
  • USDT: minimum 3,000,000 units (equivalent to $3 with 6 decimals)
  • USDC: minimum 3,000,000 units (equivalent to $3 with 6 decimals)

SEQToken Contract

• Standard ERC20 token
• Initial distribution: 10% to owner, 90% to ICO contract
• 500,000 total supply

Setup

1. Install dependencies:

npm install

2. Compile contracts:

npx hardhat compile

3. Deploy contracts:

# Deploy with main script
npx hardhat run scripts/deploy.js

# Deploy with alternative script  
npx hardhat run scripts/deploy-DE.js

Contract Functions

SEQICO Contract

• buyWithETH(uint256 tokenAmount): Purchase tokens with ETH
• buyWithUSDT(uint256 tokenAmount): Purchase tokens with USDT
• buyWithUSDC(uint256 tokenAmount): Purchase tokens with USDC
• setPricePerTokenETH(uint256 _pricePerTokenETH): Set ETH price per token (owner only, ≥ 3 ETH)
• setPricePerTokenUSDT(uint256 _pricePerTokenUSDT): Set USDT price per token (owner only, ≥ 3,000,000)
• setPricePerTokenUSDC(uint256 _pricePerTokenUSDC): Set USDC price per token (owner only, ≥ 3,000,000)
• setSEQToken(address _seqToken): Update SEQ token address (owner only)
• withdrawETH(address payable recipient): Withdraw collected ETH (owner only)
• withdrawERC20(address token, address recipient): Withdraw ERC20 tokens (owner only)

Price Validation Policy

The SEQICO contract enforces minimum price requirements for SEQ tokens across all supported payment methods:

• ETH: Minimum 3 ether (3,000,000,000,000,000,000 wei)
• USDT: Minimum 3,000,000 units (equivalent to $3 with 6 decimals)
• USDC: Minimum 3,000,000 units (equivalent to $3 with 6 decimals)

This validation is applied in:

• Contract deployment (constructor)
• All price setter functions (setPricePerTokenETH, setPricePerTokenUSDT, setPricePerTokenUSDC)

Any attempt to set a price below these minimums will result in a transaction revert with the message: "Price must be greater than or equal to $3"

Configuration

The deployment scripts include configurable parameters:

• Owner address
• USDT/USDC contract addresses
• Token pricing for ETH, USDT, and USDC (must meet minimum validation requirements)
• Total supply (500,000 SEQ tokens)

Note: When deploying, ensure all price parameters meet the minimum validation requirements, or the deployment will fail.

License

MIT