scripts-deploy.js

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: ```bash

   Deploy with main script

   npx hardhat run scripts/deploy.js

Deploy with alternative script

npx hardhat run scripts/deploy-DE.js ```

Dependencies

This project uses Hardhat v3 with the following key dependencies:

• @nomicfoundation/hardhat-toolbox-mocha-ethers - Hardhat toolbox for v3+
• @nomicfoundation/hardhat-ethers@^4.0.0 - Ethers integration
• @nomicfoundation/hardhat-ethers-chai-matchers@^3.0.0 - Chai matchers for testing
• chai@^5.1.2 - Testing framework

Dependency Updates (January 2025)

The project has been updated to resolve dependency conflicts with the new Hardhat architecture:

• Migrated from @nomicfoundation/hardhat-chai-matchers@2.1.0 to @nomicfoundation/hardhat-ethers-chai-matchers@3.0.0
• Updated to use @nomicfoundation/hardhat-toolbox-mocha-ethers@3.0.0 compatible with Hardhat v3
• Updated Chai to v5.1.2 for compatibility

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

All pricing functions enforce a minimum $3 equivalent:

• ETH prices must be ≥ 3 ether (3000000000000000000 wei)
• USDT/USDC prices must be ≥ 3,000,000 units (equivalent to $3 with 6 decimal places)

Attempts to set prices below these thresholds will revert with: "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

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