smart_contract_templates.sol

// SPDX-License-Identifier: MIT
pragma solidity >=0.7.0 <0.9.0;

// Importing necessary libraries
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";

// Base contract for the Asset Token Factory
contract AssetTokenFactory is ERC20, ERC721, Ownable {
    AggregatorV3Interface internal priceFeed;

    constructor(string memory name, string memory symbol, address aggregatorAddress) ERC20(name, symbol) ERC721(name, symbol) {
        priceFeed = AggregatorV3Interface(aggregatorAddress);
    }

    function createAssetToken(string memory name, string memory symbol, uint256 initialSupply) public onlyOwner {
        // Logic for creating a new asset token
    }

    function getLatestPrice() public view returns (int) {
        (
            uint80 roundID, 
            int price,
            uint startedAt,
            uint timeStamp,
            uint80 answeredInRound
        ) = priceFeed.latestRoundData();
        return price;
    }
}

// Base contract for the Quantum Unity Framework
contract QuantumUnityFramework is AssetTokenFactory {
    constructor(string memory name, string memory symbol, address aggregatorAddress) AssetTokenFactory(name, symbol, aggregatorAddress) {}

    // Additional functionalities specific to Quantum Unity Framework
}

// Base contract for the Global Digital Currency Network
contract GlobalDigitalCurrencyNetwork is AssetTokenFactory {
    constructor(string memory name, string memory symbol, address aggregatorAddress) AssetTokenFactory(name, symbol, aggregatorAddress) {}

    // Additional functionalities specific to Global Digital Currency Network
}

// Base contract for Contudo
contract Contudo is AssetTokenFactory {
    constructor(string memory name, string memory symbol, address aggregatorAddress) AssetTokenFactory(name, symbol, aggregatorAddress) {}

    // Additional functionalities specific to Contudo
}
```