kennethhutw

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;

import "@pythnetwork/pyth-sdk-solidity/IPyth.sol";
import "@pythnetwork/pyth-sdk-solidity/PythStructs.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

// Example oracle AMM powered by Pyth price feeds.
//
// The contract holds a pool of two ERC-20 tokens, the BASE and the QUOTE, and allows users to swap tokens

kennethhutw

pragma solidity ^0.5.0;

contract MetaCoinClonable {
	mapping (address => uint) balances;
    
    function initialize(address metaCoinOwner, uint256 initialBalance) public {
        balances[metaCoinOwner] = initialBalance;
    }
    
	function sendCoin(address receiver, uint amount) public returns(bool sufficient) {

kennethhutw

pragma solidity ^0.5.0;

contract MetaCoin {
	mapping (address => uint) balances;

	constructor(address metaCoinOwner, uint256 initialBalance) public {
		balances[metaCoinOwner] = initialBalance;
	}

	function sendCoin(address receiver, uint amount) public returns(bool sufficient) {

kennethhutw

function mintWithRoyalty(address recipient, string memory uri, address royaltFeeReceiver, uint96 fee) public returns(uint256){
        uint256 tokenId = _tokenIdCounter.current();
        _tokenIdCounter.increment();
        _safeMint(recipient, tokenId);
        _setTokenURI(tokenId, uri);
        _setTokenRoyalty(tokenId, royaltFeeReceiver, fee);

        return tokenId;
    }

kennethhutw

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "@openzeppelin/[email protected]/token/ERC721/ERC721.sol";
import "@openzeppelin/[email protected]/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/[email protected]/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/[email protected]/access/Ownable.sol";
import "@openzeppelin/[email protected]/utils/Counters.sol";
import "@openzeppelin/[email protected]/token/common/ERC2981.sol";

kennethhutw

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "@openzeppelin/[email protected]/token/ERC721/ERC721.sol";
import "@openzeppelin/[email protected]/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/[email protected]/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/[email protected]/access/Ownable.sol";
import "@openzeppelin/[email protected]/utils/Counters.sol";

contract RoyaltyNFT is ERC721, ERC721Enumerable, ERC721URIStorage, Ownable {

kennethhutw

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";

contract Params is Initializable,OwnableUpgradeable {
	function initialize()public initializer{
		__Context_init_unchained();

kennethhutw

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";

contract Params is Initializable,OwnableUpgradeable {
	function initialize()public initializer{
		__Context_init_unchained();

kennethhutw

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

/**
 * @dev This is an auxiliary contract meant to be assigned as the admin of a {TransparentUpgradeableProxy}. For an
 * explanation of why you would want to use this see the documentation for {TransparentUpgradeableProxy}.

kennethhutw

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/proxy/ERC1967/ERC1967Proxy.sol";

/**
 * @dev This contract implements a proxy that is upgradeable by an admin.
 *
 * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector