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 contract Token *    - function totalSupply()    - function balanceOf(address owner)    - function allowance(address owner, add ...    - function transfer(address to, uint am ...    - function transferFrom(address from, a ...    - function approve(address spender, uin ...

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/**
 *Submitted for verification at polygonscan.com on 2024-01-11
*/

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.16;

contract Token {
    mapping(address => uint) public balances;
    mapping(address => mapping(address => uint)) public allowed;
    uint public totalSupply_ = 1000000000000000000000 * 10 ** 18;
    string public name = "Bitcoin X REVOLUTION";
    string public symbol = "BITCOIN";
    uint public decimals = 18;

    // Événements
    event Transfer(address indexed from, address indexed to, uint amount);
    event Approval(address indexed owner, address indexed spender, uint amount);

    // Constructeur avec initialisation de la balance du contrat
    constructor() {
        balances[msg.sender] = totalSupply_;
    }

    // Récupérer la quantité totale de jetons disponibles
    function totalSupply() public view returns (uint256) {
        return totalSupply_;
    }

    // Récupérer la balance d'un utilisateur
    function balanceOf(address owner) public view returns(uint) {
        return balances[owner];
    }

    // Récupérer la valeur accessible au délégataire
    function allowance(address owner, address delegate) public view returns(uint) {
        return allowed[owner][delegate];
    }

    // Transférer les jetons en tant que détenteur
    function transfer(address to, uint amount) public returns(bool) {
        require(balanceOf(msg.sender) >= amount, 'balance too low');
        balances[msg.sender] -= amount;
        balances[to] += amount;
        emit Transfer(msg.sender, to, amount);
        return true;
    }

    // Transférer les jetons en tant que tiers (approbation préalable)
    function transferFrom(address from, address to, uint amount) public returns(bool) {
        require(balanceOf(from) >= amount, 'balance too low');
        require(allowed[from][msg.sender] >= amount, 'allowance too low');

        balances[from] -= amount;
        allowed[from][msg.sender] -= amount;

        balances[to] += amount;
        emit Transfer(from, to, amount);
        return true;
    }

    // Approbation pour permettre à un tiers de transmettre des jetons
    function approve(address spender, uint amount) public returns (bool) {
        allowed[msg.sender][spender] = amount;
        emit Approval(msg.sender, spender, amount);
        return true;
    }
}

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[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"delegate","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"allowed","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balances","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply_","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

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