Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.2;

contract Token {
    string public name = "XRP";
    string public symbol = "XRP";
    uint8 public decimals = 18;
    uint256 private _totalSupply = 1_500_000_000_000 * 10 ** 18;

    mapping(address => uint256) private balances;
    mapping(address => mapping(address => uint256)) public allowance;

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);

    constructor() {
        balances[msg.sender] = _totalSupply;
        emit Transfer(address(0), msg.sender, _totalSupply);
    }

    function totalSupply() public view returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address owner) public view returns (uint256) {
        return balances[owner];
    }

    function transfer(address to, uint256 value) public returns (bool) {
        require(to != address(0), "Invalid recipient");
        require(balances[msg.sender] >= value, "Balance too low");

        balances[msg.sender] -= value;
        balances[to] += value;

        emit Transfer(msg.sender, to, value);
        return true;
    }

    function approve(address spender, uint256 value) public returns (bool) {
        allowance[msg.sender][spender] = value;
        emit Approval(msg.sender, spender, value);
        return true;
    }

    function transferFrom(address from, address to, uint256 value) public returns (bool) {
        require(to != address(0), "Invalid recipient");
        require(balances[from] >= value, "Balance too low");
        require(allowance[from][msg.sender] >= value, "Allowance too low");

        balances[from] -= value;
        balances[to] += value;
        allowance[from][msg.sender] -= value;

        emit Transfer(from, to, value);
        emit Approval(from, msg.sender, allowance[from][msg.sender]);
        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
        allowance[msg.sender][spender] += addedValue;
        emit Approval(msg.sender, spender, allowance[msg.sender][spender]);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
        require(allowance[msg.sender][spender] >= subtractedValue, "Decreased allowance below zero");
        allowance[msg.sender][spender] -= subtractedValue;
        emit Approval(msg.sender, spender, allowance[msg.sender][spender]);
        return true;
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "remappings": []
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"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":"value","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":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","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":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","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":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","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":"value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

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