Launchpad Contract

A Hardhat-based smart contract project for a Launchpad platform that supports task publishing, reward distribution, and authorized withdrawals.

📋 Table of Contents

• Project Overview
• Tech Stack
• Requirements
• Installation & Usage
• Contract Features
• Deployment Information
• Testing
• Documentation

📖 Project Overview

Launchpad is an upgradeable smart contract that supports task publishing, reward distribution, authorized withdrawals, batch transfers, emergency exits, and permission management. The contract supports native tokens (OORT/BNB) and ERC20 tokens as reward assets.

Core Features

• ✅ Task Management: Create tasks, set task status, fund refunds
• ✅ Reward Distribution: Batch transfers, authorized withdrawals (based on EIP712 signatures)
• ✅ Fee Management: Task creation fees, configurable fee collection address
• ✅ Access Control: Multi-level permission management (Owner/Gov)
• ✅ Emergency Exit: Extract contract assets in emergency situations
• ✅ Upgradeability: Contract upgrades based on UUPS pattern

🛠 Tech Stack

• Solidity: ^0.8.23
• Hardhat: Development framework
• OpenZeppelin: Contract library (upgradeable contracts, access control, security utilities)
• EIP712: Structured data signing standard

📦 Requirements

• Node.js: v22.18.0
• npm or yarn

🚀 Installation & Usage

Install Dependencies

npm install

Compile Contracts

npm run compile

Run Tests

# Run all tests
npm test# Run tests with gas report
REPORT_GAS=true npm test# Run test coverage
npm run coverage

Deploy Contracts

# Deploy to BSC mainnet
npm run d:bsc
# Deploy to OORT mainnet
npm run d:oort
# Deploy to testnets
npm run d:test:bsc
npm run d:test:oort

🔧 Contract Features

Main Functions

Task Related

• createTask: Create a task and deposit reward tokens

  • Supports native tokens (OORT/BNB) and ERC20 tokens
  • Automatically collects task creation fees

• batchTransfer: Batch distribute rewards (Gov only)

  • Supports up to 100 recipients
  • Automatically checks total reward limits

• setTaskStatus: Set task status (Gov only)

  • Status: 0=Active, 1=Completed
  • Can refund partial rewards simultaneously

• fundsRefund: Fund refund (Gov only)

  • Only completed tasks can be refunded

Authorized Withdrawal

• authorizedWithdraw: User withdrawal with Gov-signed authorization
  • Based on EIP712 structured data signing
  • Supports expiration time and nonce for replay protection
  • Automatically verifies signatures and reward limits

Permission Management

• Owner Permissions:

  • setGov: Set governance address
  • emergencyExitForNative: Emergency extraction of native tokens
  • emergencyExitForToken: Emergency extraction of ERC20 tokens
  • _authorizeUpgrade: Authorize contract upgrades

• Gov Permissions:

  • setWorkingStatus: Pause/resume contract
  • setFeeCollector: Set fee collection address
  • setFeeAmount: Set task creation fee
  • batchTransfer: Batch distribute rewards
  • setTaskStatus: Set task status
  • fundsRefund: Fund refund

Data Structures

Task

struct Task {
address publisher; // Task publisheraddress rewardToken; // Reward token addressuint256 totalRewardAmount; // Total reward amountuint256 systemTaskId; // System task IDuint8 status; // Task status (0=Active, 1=Completed)
}

WithdrawAuthorization

struct WithdrawAuthorization {
address user; // Authorized useraddress token; // Token addressuint256 amount; // Withdrawal amountuint256 systemTaskId; // System task IDuint256 deadline; // Authorization expiration timestampuint256 nonce; // Replay protection nonce
}

Events

• TaskCreated: Task created
• AuthorizedWithdraw: Authorized withdrawal
• FundsRefund: Fund refund
• FeeAmountUpdated: Fee updated
• SetWorkingStatus: Working status changed

📍 Deployment Information

OORT Mainnet

Contract Address : 0xF10ae6Ccda20005F60Bb30d83ac6F713e890E3d0

 ============ BASIC INFO ============
✅ Current Network : mainnet
Network Url : https://mainnet-rpc.oortech.com
deployer address : 0xD5cBD0b230be7c6A3C3CAe8e6C238e3C71E83906
owner address : 0x07e2f006e078A8c69b932C743596C7f440175739
fee address : 0xF189e0a26Bb836636A0BD96cec4591d96ed88D8D
gov address : 0xF189e0a26Bb836636A0BD96cec4591d96ed88D8D
fee : 5000000000000000000n / 5.0 OORT
wort : 0xEAd29460881f38ADA079A38ac3D82E2D088930d9
------------ DEPLOY INFO ------------
Lunchpad address : 0xF10ae6Ccda20005F60Bb30d83ac6F713e890E3d0 ✅
============ DEPLOY END ============

BSC Mainnet

Contract Address : 0xF10ae6Ccda20005F60Bb30d83ac6F713e890E3d0

 ============ BASIC INFO ============
✅ Current Network : bsc_mainnet
Network Url : https://bsc-rpc.publicnode.com
deployer address : 0xD5cBD0b230be7c6A3C3CAe8e6C238e3C71E83906
owner address : 0x07e2f006e078A8c69b932C743596C7f440175739
fee address : 0xF189e0a26Bb836636A0BD96cec4591d96ed88D8D
gov address : 0xF189e0a26Bb836636A0BD96cec4591d96ed88D8D
fee : 5000000000000000n / 0.005 BNB
wort : 0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c
------------ DEPLOY INFO ------------
Lunchpad address : 0xF10ae6Ccda20005F60Bb30d83ac6F713e890E3d0 ✅
============ DEPLOY END ============

🧪 Testing

The project includes a comprehensive test suite covering main functionalities:

# Run tests
npm test# View test coverage
npm run coverage

Test files are located in test/Launchpad.test.js, including:

• Task creation tests
• Batch transfer tests
• Authorized withdrawal tests
• Permission management tests
• Edge case tests

📚 Documentation

For detailed contract documentation, please refer to: docs/index.md

The documentation includes:

• Complete API reference
• Method parameter descriptions
• Error code explanations
• Typical call flows
• FAQ

🔒 Security Features

• ✅ Reentrancy attack protection (ReentrancyGuard)
• ✅ Permission separation (Owner/Gov)
• ✅ EIP712 signature verification
• ✅ Nonce replay attack protection
• ✅ Emergency exit mechanism
• ✅ Pausable functionality

📝 License

MIT License

👥 Contributors

This project is developed and maintained by Oort Team.

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Note: Please ensure environment variables and network parameters are properly configured before deployment.