💰 LicenseChain DeFi SDK

Decentralized Finance integration for LicenseChain - Create, manage, and trade software licenses using DeFi protocols including lending, borrowing, staking, and yield farming.

🌟 Features

🏦 DeFi Protocol Integration

Aave - Lending and borrowing against licenses
Compound - License-based collateral management
Uniswap - License token trading and liquidity
SushiSwap - Cross-chain license trading
Curve - Stable license token pools
Yearn - Automated license yield farming

💎 License as Collateral

License Collateralization - Use licenses as collateral for loans
Dynamic Pricing - Real-time license valuation
Liquidation Protection - Automated liquidation prevention
Collateral Optimization - Maximize borrowing power

🌾 Yield Farming

License Staking - Stake licenses to earn rewards
Liquidity Mining - Provide liquidity for license tokens
Governance Tokens - Earn governance rights through licensing
Auto-compounding - Automated yield optimization

🔄 Cross-Chain DeFi

Multi-Chain Lending - Borrow on one chain, collateral on another
Cross-Chain Swaps - Trade licenses across chains
Bridge Integration - Seamless cross-chain license transfers
Unified DeFi - Single interface for all DeFi operations

🚀 Quick Start

Installation

npm install @licensechain/defi-sdk
# or
yarn add @licensechain/defi-sdk
# or
pnpm add @licensechain/defi-sdk

Basic Usage

import { LicenseChainDeFi } from '@licensechain/defi-sdk';

// Initialize the SDK
const defiSDK = new LicenseChainDeFi({
  network: 'ethereum', // or 'polygon', 'bsc', 'avalanche'
  privateKey: process.env.PRIVATE_KEY,
  rpcUrl: process.env.RPC_URL,
  protocols: ['aave', 'compound', 'uniswap'] // Enable specific protocols
});

// Deploy license contract with DeFi integration
const contract = await defiSDK.deployDeFiLicenseContract({
  name: 'DeFi Software License',
  symbol: 'DSL',
  baseURI: 'https://api.myapp.com/licenses/',
  maxSupply: 10000,
  protocols: ['aave', 'compound', 'uniswap']
});

// Create a license
const license = await contract.mintLicense({
  to: '0x742d35Cc6634C0532925a3b8D4C9db96C4b4d8b6',
  tokenId: 1,
  metadata: {
    software: 'MyApp Pro',
    version: '2.0.0',
    features: ['premium', 'unlimited'],
    value: '1000' // USD value for collateral
  }
});

// Use license as collateral for lending
const lendingResult = await defiSDK.useLicenseAsCollateral({
  protocol: 'aave',
  licenseId: 1,
  asset: 'USDC',
  amount: '500'
});

// Borrow against license
const borrowResult = await defiSDK.borrowAgainstLicense({
  protocol: 'aave',
  licenseId: 1,
  asset: 'USDC',
  amount: '250'
});

📚 API Reference

LicenseChainDeFi

Constructor Options

interface DeFiConfig {
  network: 'ethereum' | 'polygon' | 'bsc' | 'avalanche' | 'arbitrum';
  privateKey?: string;
  walletProvider?: any;
  rpcUrl?: string;
  protocols?: ProtocolType[];
  gasPrice?: string;
  gasLimit?: number;
}

type ProtocolType = 'aave' | 'compound' | 'uniswap' | 'sushiswap' | 'curve' | 'yearn';

Methods

`deployDeFiLicenseContract(options)`

Deploy a license contract with DeFi integration.

interface DeFiDeployOptions {
  name: string;
  symbol: string;
  baseURI: string;
  maxSupply?: number;
  protocols: ProtocolType[];
  oracleAddress?: string;
  priceFeedAddress?: string;
}

const contract = await defiSDK.deployDeFiLicenseContract({
  name: 'DeFi Software License',
  symbol: 'DSL',
  baseURI: 'https://api.myapp.com/licenses/',
  maxSupply: 10000,
  protocols: ['aave', 'compound', 'uniswap'],
  oracleAddress: '0x...', // Chainlink oracle
  priceFeedAddress: '0x...' // Price feed contract
});

`useLicenseAsCollateral(options)`

Use a license as collateral for lending.

interface CollateralOptions {
  protocol: ProtocolType;
  licenseId: number;
  asset: string;
  amount: string;
  duration?: number; // days
}

const result = await defiSDK.useLicenseAsCollateral({
  protocol: 'aave',
  licenseId: 1,
  asset: 'USDC',
  amount: '500',
  duration: 30
});

`borrowAgainstLicense(options)`

Borrow assets using license as collateral.

interface BorrowOptions {
  protocol: ProtocolType;
  licenseId: number;
  asset: string;
  amount: string;
  interestRate?: 'stable' | 'variable';
}

const result = await defiSDK.borrowAgainstLicense({
  protocol: 'aave',
  licenseId: 1,
  asset: 'USDC',
  amount: '250',
  interestRate: 'stable'
});

DeFi Protocols

Aave Integration

// Supply license as collateral
const aaveResult = await defiSDK.aave.supplyCollateral({
  licenseId: 1,
  asset: 'USDC',
  amount: '500'
});

// Borrow against license
const borrowResult = await defiSDK.aave.borrow({
  licenseId: 1,
  asset: 'USDC',
  amount: '250',
  interestRate: 'stable'
});

// Repay loan
const repayResult = await defiSDK.aave.repay({
  licenseId: 1,
  asset: 'USDC',
  amount: '250'
});

// Withdraw collateral
const withdrawResult = await defiSDK.aave.withdrawCollateral({
  licenseId: 1,
  asset: 'USDC',
  amount: '500'
});

Compound Integration

// Supply license to Compound
const compoundResult = await defiSDK.compound.supply({
  licenseId: 1,
  asset: 'USDC',
  amount: '500'
});

// Borrow from Compound
const borrowResult = await defiSDK.compound.borrow({
  licenseId: 1,
  asset: 'USDC',
  amount: '250'
});

// Get borrowing power
const borrowingPower = await defiSDK.compound.getBorrowingPower(1);

Uniswap Integration

// Add license to liquidity pool
const liquidityResult = await defiSDK.uniswap.addLiquidity({
  licenseId: 1,
  tokenA: 'USDC',
  tokenB: 'WETH',
  amountA: '1000',
  amountB: '0.5'
});

// Swap license tokens
const swapResult = await defiSDK.uniswap.swap({
  licenseId: 1,
  tokenIn: 'USDC',
  tokenOut: 'WETH',
  amountIn: '100',
  slippage: 0.5 // 0.5%
});

// Remove liquidity
const removeResult = await defiSDK.uniswap.removeLiquidity({
  licenseId: 1,
  tokenA: 'USDC',
  tokenB: 'WETH',
  liquidity: '100'
});

🔧 Advanced Features

Yield Farming

// Stake license for rewards
const stakeResult = await defiSDK.stakeLicense({
  protocol: 'yearn',
  licenseId: 1,
  duration: 30, // days
  autoCompound: true
});

// Get staking rewards
const rewards = await defiSDK.getStakingRewards(1);

// Claim rewards
const claimResult = await defiSDK.claimRewards(1);

Liquidity Mining

// Provide liquidity for license tokens
const liquidityResult = await defiSDK.provideLiquidity({
  protocol: 'sushiswap',
  licenseId: 1,
  tokenA: 'USDC',
  tokenB: 'WETH',
  amountA: '1000',
  amountB: '0.5'
});

// Get liquidity mining rewards
const miningRewards = await defiSDK.getLiquidityMiningRewards(1);

Cross-Chain DeFi

// Lend on Ethereum, collateral on Polygon
const crossChainResult = await defiSDK.crossChainLending({
  lendingChain: 'ethereum',
  collateralChain: 'polygon',
  licenseId: 1,
  asset: 'USDC',
  amount: '500'
});

// Bridge license for DeFi
const bridgeResult = await defiSDK.bridgeLicenseForDeFi({
  fromChain: 'ethereum',
  toChain: 'polygon',
  licenseId: 1,
  protocol: 'aave'
});

Automated Strategies

// Auto-compound yield
const autoCompoundResult = await defiSDK.enableAutoCompound({
  licenseId: 1,
  protocol: 'yearn',
  compoundFrequency: 'daily'
});

// Rebalance portfolio
const rebalanceResult = await defiSDK.rebalancePortfolio({
  licenseId: 1,
  targetAllocation: {
    'USDC': 40,
    'WETH': 30,
    'WBTC': 20,
    'DAI': 10
  }
});

🌐 Protocol Configuration

Supported Protocols

Protocol	Network	Features	TVL
Aave	Ethereum, Polygon, Avalanche	Lending, Borrowing, Collateral	$15B+
Compound	Ethereum, Polygon	Lending, Borrowing, Governance	$8B+
Uniswap	Ethereum, Polygon, Arbitrum	Trading, Liquidity, AMM	$5B+
SushiSwap	Ethereum, Polygon, BSC	Cross-chain, Liquidity	$2B+
Curve	Ethereum, Polygon	Stable swaps, Low slippage	$3B+
Yearn	Ethereum, Polygon	Yield farming, Vaults	$1B+

Custom Protocol

const defiSDK = new LicenseChainDeFi({
  network: 'ethereum',
  privateKey: process.env.PRIVATE_KEY,
  protocols: ['custom'],
  customProtocols: {
    custom: {
      address: '0x...',
      abi: [...],
      functions: {
        supply: 'supplyCollateral',
        borrow: 'borrow',
        repay: 'repay'
      }
    }
  }
});

🔒 Security Best Practices

Risk Management

// Set liquidation threshold
await defiSDK.setLiquidationThreshold({
  licenseId: 1,
  threshold: 0.8 // 80% of collateral value
});

// Enable liquidation protection
await defiSDK.enableLiquidationProtection({
  licenseId: 1,
  maxSlippage: 0.05 // 5%
});

// Monitor health factor
const healthFactor = await defiSDK.getHealthFactor(1);
if (healthFactor < 1.5) {
  console.warn('License is at risk of liquidation');
}

Oracle Integration

// Set price oracle for license valuation
await defiSDK.setPriceOracle({
  licenseId: 1,
  oracle: 'chainlink',
  priceFeed: '0x...'
});

// Get real-time license value
const licenseValue = await defiSDK.getLicenseValue(1);
console.log('License value:', licenseValue); // USD

📊 Error Handling

import { LicenseChainError, ErrorCodes } from '@licensechain/defi-sdk';

try {
  const result = await defiSDK.useLicenseAsCollateral(options);
} catch (error) {
  if (error instanceof LicenseChainError) {
    switch (error.code) {
      case ErrorCodes.INSUFFICIENT_COLLATERAL:
        console.error('Insufficient collateral value');
        break;
      case ErrorCodes.LIQUIDATION_RISK:
        console.error('License at risk of liquidation');
        break;
      case ErrorCodes.PROTOCOL_ERROR:
        console.error('DeFi protocol error:', error.details);
        break;
      case ErrorCodes.ORACLE_ERROR:
        console.error('Price oracle error:', error.details);
        break;
      default:
        console.error('Unknown error:', error.message);
    }
  }
}

🧪 Testing

import { LicenseChainDeFi } from '@licensechain/defi-sdk';

describe('LicenseChain DeFi SDK', () => {
  let defiSDK: LicenseChainDeFi;
  let contract: DeFiLicenseContract;

  beforeEach(async () => {
    defiSDK = new LicenseChainDeFi({
      network: 'ethereum',
      privateKey: process.env.TEST_PRIVATE_KEY,
      protocols: ['aave', 'compound']
    });

    contract = await defiSDK.deployDeFiLicenseContract({
      name: 'Test DeFi License',
      symbol: 'TDL',
      baseURI: 'https://test.com/',
      protocols: ['aave', 'compound']
    });
  });

  it('should use license as collateral', async () => {
    const result = await defiSDK.useLicenseAsCollateral({
      protocol: 'aave',
      licenseId: 1,
      asset: 'USDC',
      amount: '500'
    });

    expect(result.success).toBe(true);
    expect(result.collateralValue).toBe('500');
  });
});

📦 Package Scripts

{
  "scripts": {
    "build": "tsc",
    "test": "jest",
    "test:coverage": "jest --coverage",
    "lint": "eslint src/**/*.ts",
    "lint:fix": "eslint src/**/*.ts --fix",
    "deploy:ethereum": "ts-node scripts/deploy-ethereum.ts",
    "deploy:polygon": "ts-node scripts/deploy-polygon.ts",
    "strategy:yield": "ts-node scripts/yield-strategy.ts"
  }
}

🤝 Contributing

We welcome contributions! Please see our Contributing Guide for details.

Development Setup

git clone https://github.com/LicenseChain/LicenseChain-DeFi-SDK.git
cd LicenseChain-DeFi-SDK
npm install
npm run build
npm test

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🔗 Links

🆘 Support

📧 Email: support@licensechain.app
💬 Discord: LicenseChain Community
📖 Documentation: docs.licensechain.app
🐛 Issues: GitHub Issues

Built with ❤️ by the LicenseChain Team

Name		Name	Last commit message	Last commit date
Latest commit History 3 Commits
examples		examples
src		src
.gitignore		.gitignore
LICENSE		LICENSE
README.md		README.md
package.json		package.json
tsconfig.json		tsconfig.json

License

LicenseChain/LicenseChain-DeFi-SDK

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