sandy13869

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.11;

contract EtherWallet{
    address payable public owner;

    // Only owner can access the function and withdraw
    constructor() {
        owner = payable(msg.sender);
    }

sandy13869

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.10;

import "@chainlink/contracts/src/v0.8/VRFConsumerBase.sol";

contract Lottery is VRFConsumerBase{
    // Declare the owner
    address public owner;
    // Declare the Player

sandy13869

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

contract Lottery {
    // Declare the owner
    address public owner;
    // Declare the Player
    address payable[] public players;
    uint256 public lotteryId;

sandy13869

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.14;

contract PurchaseAgreement {
    uint256 public value;
    address payable public seller;
    address payable public buyer;

    enum State {Created, Locked, Release, Inactive}

sandy13869

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

contract MyNFT is ERC20 {

    constructor() ERC20 ("Sandy Coins", "SAN") {
        _mint(msg.sender, 1000 * 10 ** 18);

sandy13869

const crypto = require("crypto"), SHA256 = message => crypto.createHash("sha256").update(message).digest("hex");

class Block {
    constructor(timestamp = "", data = []) {
        this.timestamp = timestamp;
        this.data = data;
        this.hash = this.getHash();
        this.prevHash = "";
    }

sandy13869

import psycopg2
import psycopg2.extras

hostname ='localhost'
database = 'demo'
username = 'postgres'
pwd = 'pwd'
port_id = 5432
conn = None
cur = None

sandy13869

const axios = require('axios');
const fs = require('fs');


function getGraph() {

}

const main = async () => {
    try {

sandy13869

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