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Contract 0xeb1112ac78d537853150e2a07e8b765e29d3f019 3

 
 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xdcda1001b20b9a8f26f207c9f2601d60ef2fd59650274069a1d5eb87b7f23227Approve145099572022-01-19 19:47:041 day 6 hrs ago0x2590efa672098f59133adcce7e5e17c17cd3e699 IN  Hashbon: HASH Token0 BNB0.000222515
0xa9212eabb4e788eddd4358e0370925d9ce52e6e4b7e9968e015e6ebe829e39f4Approve144944932022-01-19 6:48:301 day 19 hrs ago0xe0befe914fb6f8de65685cdca2f7d72a87d59e20 IN  Hashbon: HASH Token0 BNB0.000222515
0x54dc04d9a61a4adc594c520022039727f4081837d2e55e5665c8f523b4e1292dApprove144791602022-01-18 18:00:122 days 7 hrs ago0xb701f072a13be16fbd2c96d3077d874f48aae163 IN  Hashbon: HASH Token0 BNB0.000222515
0x78da9f1a013fb81e8a781805e0289d62587be57b38b005aaed4ec91c4d96ae42Approve144782632022-01-18 17:15:212 days 8 hrs ago0x3f310c5cc1c56fe124acea158f78cf4f946a4399 IN  Hashbon: HASH Token0 BNB0.000311521
0x50d67d8ab3c3b0e30f513517affa32a4c243d7cea451e90a1ce108c9c94c4199Approve144767292022-01-18 15:56:112 days 10 hrs ago0x9461f8480d23d72cf8807df70560368494942b5c IN  Hashbon: HASH Token0 BNB0.000222515
0x91a50781315c3d26d1e7232b6176c25248618ca18b9adabcc458fa5ccd83706eTransfer144506352022-01-17 17:50:563 days 8 hrs ago0xc406ff6cc483a09dc887511a35deed1565acc331 IN  Hashbon: HASH Token0 BNB0.000106705
0x8eb917d555bd9daa8ad04682b3e08f8cd31c4352123581b3f316b80865c67db5Transfer144505852022-01-17 17:48:263 days 8 hrs ago0x0a2e827ba9793fb2b0daf08936a634a3543295b6 IN  Hashbon: HASH Token0 BNB0.000181645
0xe48165f43fe095c1f8c046ba3d66d7b5347cef4e472ae21af30bc68565430570Approve144465912022-01-17 14:23:083 days 11 hrs ago0xdb41da7bfe5f80c3763b5ec7f12c7b988f0eec0f IN  Hashbon: HASH Token0 BNB0.000222515
0xf9243c8b6713765ad6c3b7aa63287ae8bc55d81fa16f2ac9637bd3eb0b6a4b3cApprove144460812022-01-17 13:57:373 days 12 hrs ago0xbe6b38e8263bb3f943f076de1dda3e258a8ef31c IN  Hashbon: HASH Token0 BNB0.000222515
0x613c27d711bbf500bc1220876903d3d164a9c34fed0c75533a25e76d7c5b15bdApprove144447862022-01-17 12:52:393 days 13 hrs ago0x071206d2fb1f97ef8c7f79303a44e231674ded11 IN  Hashbon: HASH Token0 BNB0.000222515
0x6cf33a820254a882ff8f7770ed4ea5010577077d073841d4d16b80b50c348552Approve144427512022-01-17 11:08:543 days 14 hrs ago0x0fdaa57856b8c72cf5bd70baf383ca07d02dade1 IN  Hashbon: HASH Token0 BNB0.000222515
0x275c3a51ff482eeb577a8c771201556c844a7e255edf94db35bd58d15f2f79a9Approve144400282022-01-17 8:52:323 days 17 hrs ago0xfcbac120169b2e40e5da6ed74d5a5f4ea726db1d IN  Hashbon: HASH Token0 BNB0.000222515
0x004813c5978af5dc0b38835bba5f26152ffc6842427fae10fa2633f0be20e038Transfer144377892022-01-17 6:59:563 days 18 hrs ago0xf44f0392f1c0a363aa79aa4ac40126a2a9392d62 IN  Hashbon: HASH Token0 BNB0.000181645
0x9a184fc82c01d51e96e788e293435d7652bb4e471c567660984447f08e18417dApprove144288032022-01-16 23:26:194 days 2 hrs ago0x7b4e78ba7e93e7ed46afed7211380e8f6ddd8ee0 IN  Hashbon: HASH Token0 BNB0.000222515
0xbe095a8af1330ad2a50c816edc5ce6009cdbaa9cd63a6c508752fd9a95396a8eApprove144219972022-01-16 17:45:504 days 8 hrs ago0x046bd4c95687dbb28045bab21d777735b519d40f IN  Hashbon: HASH Token0 BNB0.000222515
0x59dd55d59f25f3cb6c3fe9f3b425c5d8a1f60a22456e1c623c106bf204ebfe50Approve144204942022-01-16 16:29:504 days 9 hrs ago0x6de3688bd9c2d59ec9e2866cb643dd920003fc48 IN  Hashbon: HASH Token0 BNB0.000222515
0x297634fed29144df3a806961b25b8fc39aa78c2865f445f3f82e983d21665136Approve144204862022-01-16 16:29:264 days 9 hrs ago0x6de3688bd9c2d59ec9e2866cb643dd920003fc48 IN  Hashbon: HASH Token0 BNB0.000222515
0x49f0ce76207bda5a1c29ab23dff37343c3cf68786411a87e737acac1daa9ca9eApprove144039972022-01-16 2:42:104 days 23 hrs ago0x21e7d87aee19e7444c6963caaf4b157ffc660fab IN  Hashbon: HASH Token0 BNB0.000222515
0x7bf396beef4ce2092ccf2acc79bf81cb9484cd25a838cde5d12fd79409e8e48fApprove143912962022-01-15 16:03:095 days 9 hrs ago0x31de458a3a494510401f78af70a9a23f9c61c13e IN  Hashbon: HASH Token0 BNB0.000222515
0xe6a59abc47ec2f039ddf2f5e823eb567f00a6522e49c1edc5716e338b0431bcfApprove143833452022-01-15 9:24:325 days 16 hrs ago0x1424704156c915905d67829c9bf331aa144985bb IN  Hashbon: HASH Token0 BNB0.000222515
0x8e9aa1fc8b7c8cc64db2e8f31765034cf6e31e601950596648b429640e451640Approve143648692022-01-14 18:00:256 days 7 hrs ago0xf1eb535b624b3ba974676cf8f28320aa3d99e483 IN  Hashbon: HASH Token0 BNB0.000222515
0x10fcd71534ee1f756e3e97d7d8752e4e9bec7767416b872ccb02dd4ecf3522d3Approve143640312022-01-14 17:18:316 days 8 hrs ago0xd71f2a6be32349316a765e425fa6ad3c67dc46f2 IN  Hashbon: HASH Token0 BNB0.000222515
0x138fb0a84cbefbf998ae9085f5a3d7e4c10f942690686e92f8a2b3658f0a43b8Approve143640092022-01-14 17:17:256 days 8 hrs ago0xb9294f0f41703f5d055f4e34cd09ef168737563f IN  Hashbon: HASH Token0 BNB0.000222515
0xeb78be2ca67f0d539aa17b9da01421dd3b3edca6711bbcbd75c681b52a02e6eaApprove143554432022-01-14 10:07:566 days 15 hrs ago0x6fd2b5a4db03159c021ffe2d7bb7ffbb911912bf IN  Hashbon: HASH Token0 BNB0.000222515
0xa6280b07611881db32054411fdf9e3b25dcfe64961ba2813e1bd24885de35cd7Approve143532652022-01-14 8:18:246 days 17 hrs ago0x128d1f648b71720becc49c0975372c86f1a4d50f IN  Hashbon: HASH Token0 BNB0.000222515
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OVERVIEW

Hashbon is the cryptocurrency processing platform. It aims to help users to work easily with crypto wallets and provide payment gateway service for companies.

Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x4b2bc1deabf0e4258013c0175ca90480841e16a2f93aa5cfae657bffc5901e5054695382021-03-07 10:29:51319 days 15 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 Hashbon: HASH Token0 BNB
0x4bd0bc47f7f6cf00e2c5a6ce4a6454a0ee4f209eb770fb6a76603310f5d01f1854690892021-03-07 10:07:24319 days 15 hrs ago 0x0000000000b80b2b49630047c38f2810ab8fb946 Hashbon: HASH Token0 BNB
0x4bd0bc47f7f6cf00e2c5a6ce4a6454a0ee4f209eb770fb6a76603310f5d01f1854690892021-03-07 10:07:24319 days 15 hrs ago 0x0000000000b80b2b49630047c38f2810ab8fb946 Hashbon: HASH Token0 BNB
0x62d4df7c0865e1ef9721a18b004b10c101a38677d3f57e9674141b47662403c354690892021-03-07 10:07:24319 days 15 hrs ago 0x0000000000b80b2b49630047c38f2810ab8fb946 Hashbon: HASH Token0 BNB
0x62d4df7c0865e1ef9721a18b004b10c101a38677d3f57e9674141b47662403c354690892021-03-07 10:07:24319 days 15 hrs ago 0x0000000000b80b2b49630047c38f2810ab8fb946 Hashbon: HASH Token0 BNB
0xd64777b358ceefac1cd13ec86b0b3e2017db9cf3c1bf1895f3039583b4e5d72554690892021-03-07 10:07:24319 days 15 hrs ago PancakeSwap: HASH Hashbon: HASH Token0 BNB
0xd64777b358ceefac1cd13ec86b0b3e2017db9cf3c1bf1895f3039583b4e5d72554690892021-03-07 10:07:24319 days 15 hrs ago PancakeSwap: Router Hashbon: HASH Token0 BNB
0xd64777b358ceefac1cd13ec86b0b3e2017db9cf3c1bf1895f3039583b4e5d72554690892021-03-07 10:07:24319 days 15 hrs ago 0x8a78a1f6a01cac9db665fb65727f98b71485f993 Hashbon: HASH Token0 BNB
0xd64777b358ceefac1cd13ec86b0b3e2017db9cf3c1bf1895f3039583b4e5d72554690892021-03-07 10:07:24319 days 15 hrs ago BurgerSwap: HASH Hashbon: HASH Token0 BNB
0xd64777b358ceefac1cd13ec86b0b3e2017db9cf3c1bf1895f3039583b4e5d72554690892021-03-07 10:07:24319 days 15 hrs ago BurgerSwap: HASH Hashbon: HASH Token0 BNB
0xd64777b358ceefac1cd13ec86b0b3e2017db9cf3c1bf1895f3039583b4e5d72554690892021-03-07 10:07:24319 days 15 hrs ago BurgerSwap: HASH Hashbon: HASH Token0 BNB
0x71f671e35190f549eae73ec78ededac2dcf7e7ba216b691066c6888b7908fc6a54690892021-03-07 10:07:24319 days 15 hrs ago 0x0000000000b80b2b49630047c38f2810ab8fb946 Hashbon: HASH Token0 BNB
0x71f671e35190f549eae73ec78ededac2dcf7e7ba216b691066c6888b7908fc6a54690892021-03-07 10:07:24319 days 15 hrs ago 0x0000000000b80b2b49630047c38f2810ab8fb946 Hashbon: HASH Token0 BNB
0x6c2fefd96dd66083da0c48fab0b667725e2fb5f2b95d13edc24f3d786e24c8cf54690882021-03-07 10:07:21319 days 15 hrs ago BurgerSwap: BURGER-HASH Hashbon: HASH Token0 BNB
0x6c2fefd96dd66083da0c48fab0b667725e2fb5f2b95d13edc24f3d786e24c8cf54690882021-03-07 10:07:21319 days 15 hrs ago BurgerSwap: HASH Hashbon: HASH Token0 BNB
0x6c2fefd96dd66083da0c48fab0b667725e2fb5f2b95d13edc24f3d786e24c8cf54690882021-03-07 10:07:21319 days 15 hrs ago BurgerSwap: HASH Hashbon: HASH Token0 BNB
0x6c2fefd96dd66083da0c48fab0b667725e2fb5f2b95d13edc24f3d786e24c8cf54690882021-03-07 10:07:21319 days 15 hrs ago 0xbf6527834dbb89cdc97a79fcd62e6c08b19f8ec0 Hashbon: HASH Token0 BNB
0x6c2fefd96dd66083da0c48fab0b667725e2fb5f2b95d13edc24f3d786e24c8cf54690882021-03-07 10:07:21319 days 15 hrs ago BurgerSwap: HASH Hashbon: HASH Token0 BNB
0x6c2fefd96dd66083da0c48fab0b667725e2fb5f2b95d13edc24f3d786e24c8cf54690882021-03-07 10:07:21319 days 15 hrs ago 0xbf6527834dbb89cdc97a79fcd62e6c08b19f8ec0 Hashbon: HASH Token0 BNB
0xbc910594629e866a44a435fe6f47f29358b955cfd1763588a3137d52dacb2ac154671142021-03-07 8:28:39319 days 17 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 Hashbon: HASH Token0 BNB
0x5746d45e0181b0d669bda39dfdf377e7f1a4ee1b496b1a877b7840735be5c89754665162021-03-07 7:58:45319 days 17 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 Hashbon: HASH Token0 BNB
0x136f252e09f4f62afccc96052683f1f744f7dac2ced5622415e138a3da4f841954659102021-03-07 7:28:27319 days 18 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 Hashbon: HASH Token0 BNB
0x9964f488a769f5416bd13c67966dc59559831823ca17dadd7dd85cc0257fdbff54652712021-03-07 6:56:30319 days 19 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 Hashbon: HASH Token0 BNB
0x9964f488a769f5416bd13c67966dc59559831823ca17dadd7dd85cc0257fdbff54652712021-03-07 6:56:30319 days 19 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 Hashbon: HASH Token0 BNB
0x95ba9c0ebd60a91aa2508f142e93f8eb166c2fdbcd68aa7857c2e63c5f9814e354651882021-03-07 6:52:21319 days 19 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 Hashbon: HASH Token0 BNB
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Contract Source Code Verified (Exact Match)

Contract Name:
HashToken

Compiler Version
v0.7.6+commit.7338295f

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion, None license

Contract Source Code (Solidity Multiple files format)

File 1 of 7: HashToken.sol
pragma solidity >=0.6.0 <0.8.0;

import "./ERC20Burnable.sol";
import "./Ownable.sol";

contract HashToken is ERC20Burnable, Ownable {
	uint256 public constant INITIAL_SUPPLY = 1000000000000000000000000000;

	/**
     * @dev Constructor that gives msg.sender all of existing tokens.
     */
    constructor() public ERC20("HASH", "HASH") {
        _mint(msg.sender, INITIAL_SUPPLY);
    }
	
	function mintTokens(address beneficiary, uint256 amount) public onlyOwner {
        _mint(beneficiary, amount);
    }
	
	function issueTokens(uint256 amount) public onlyOwner {
		_mint(owner(), amount);
	}
}

File 2 of 7: Context.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

File 3 of 7: ERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "./Context.sol";
import "./IERC20.sol";
import "./SafeMath.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20 {
    using SafeMath for uint256;

    mapping (address => uint256) private _balances;

    mapping (address => mapping (address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
     * a default value of 18.
     *
     * To select a different value for {decimals}, use {_setupDecimals}.
     *
     * All three of these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name_, string memory symbol_) public {
        _name = name_;
        _symbol = symbol_;
        _decimals = 18;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
     * called.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view returns (uint8) {
        return _decimals;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Sets {decimals} to a value other than the default one of 18.
     *
     * WARNING: This function should only be called from the constructor. Most
     * applications that interact with token contracts will not expect
     * {decimals} to ever change, and may work incorrectly if it does.
     */
    function _setupDecimals(uint8 decimals_) internal {
        _decimals = decimals_;
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be to transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}

File 4 of 7: ERC20Burnable.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "./Context.sol";
import "./ERC20.sol";

/**
 * @dev Extension of {ERC20} that allows token holders to destroy both their own
 * tokens and those that they have an allowance for, in a way that can be
 * recognized off-chain (via event analysis).
 */
abstract contract ERC20Burnable is Context, ERC20 {
    using SafeMath for uint256;

    /**
     * @dev Destroys `amount` tokens from the caller.
     *
     * See {ERC20-_burn}.
     */
    function burn(uint256 amount) public virtual {
        _burn(_msgSender(), amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, deducting from the caller's
     * allowance.
     *
     * See {ERC20-_burn} and {ERC20-allowance}.
     *
     * Requirements:
     *
     * - the caller must have allowance for ``accounts``'s tokens of at least
     * `amount`.
     */
    function burnFrom(address account, uint256 amount) public virtual {
        uint256 decreasedAllowance = allowance(account, _msgSender()).sub(amount, "ERC20: burn amount exceeds allowance");

        _approve(account, _msgSender(), decreasedAllowance);
        _burn(account, amount);
    }
}

File 5 of 7: IERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

File 6 of 7: Ownable.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "./Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract 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 () internal {
        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 renounceOwnership() 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;
    }
}

File 7 of 7: SafeMath.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

Contract Security Audit

Contract ABI

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Swarm Source

ipfs://a2debc4c7512516dfdcf81a89844d93a6317735e072dd2665da68662118b3698
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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