Contract 0x23396cf899ca06c4472205fc903bdb4de249d6fc 3

 

Contract Overview

Mirror Protocol: UST Token
Balance:
0 BNB

BNB Value:
$0.00

Token:
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xf9b79eb1501fb55d30c12297b67244b4f76f8e99763fe28d15e3e35eed19a377Burn111198432021-09-21 22:41:433 mins ago0x78343d9b213b27b97a6ca27b284e8a9e8a93faf2 IN  Mirror Protocol: UST Token0 BNB0.000190055
0xed51f4d7fdf5972ca8410f52abc846498a18f7b449cb9f1537ae89fa8d0167fdBurn111198112021-09-21 22:40:074 mins ago0x94c9d5ad070328b5cb5bdbf4caebc59e8749339f IN  Mirror Protocol: UST Token0 BNB0.000190055
0xbafe327ea9a322a58e269a48148b80cff18fc32592f01f834fffb675dab9b322Burn111197982021-09-21 22:39:285 mins ago0x2ab48bbb0da32863d218ec3e0a04715d2239a6e1 IN  Mirror Protocol: UST Token0 BNB0.000189995
0x20ec40c12f9cc9701e2f0d14d3d9f3164676b6e1600cfb50b21ff75a3163f95fBurn111197222021-09-21 22:35:409 mins ago0x396cf55033432f073f11c5a160336e7cc32fce78 IN  Mirror Protocol: UST Token0 BNB0.000189995
0xe969146c6553fb0eaacd6898016fe2fa90022548edfd411796d52304457475eeBurn111197002021-09-21 22:34:3410 mins ago0x0909231bf0af57bb5d2713028fad29dd7da575bb IN  Mirror Protocol: UST Token0 BNB0.000190115
0x26bec35936a8501c5263c20f5c852fed54ac77760eb1bc413b03005a66043985Approve111196452021-09-21 22:31:3813 mins ago0x6679162fc16560d9759005c6f09116bccaf2a56d IN  Mirror Protocol: UST Token0 BNB0.000222545
0x0a01768b1d39eaf00c00e6a4ce44bd921eb5a45c310c71cb8c396c6e52a2fadeBurn111196342021-09-21 22:31:0114 mins ago0x858b71092920460bb91a10d467af58b6ce698b6b IN  Mirror Protocol: UST Token0 BNB0.000190115
0xd155d6c188fd05697fb58353dd6dcbd9e1b45ab29f3016bc0df37b354ce44523Burn111196022021-09-21 22:29:1315 mins ago0x396cf55033432f073f11c5a160336e7cc32fce78 IN  Mirror Protocol: UST Token0 BNB0.000189995
0xfc884e13023474b7d732dae6617730fff706569e35cba693aee7d5f31b1e4b48Burn111195692021-09-21 22:27:1917 mins ago0x64ffe9a5b9309854fc93785f263994fc179537ac IN  Mirror Protocol: UST Token0 BNB0.000190055
0x60e93e32a84e7f5a7e9e45b0d3b620e460a5d73085ce7e59867e355f9adf3ce6Burn111195452021-09-21 22:25:5619 mins ago0x971602b4283390aad861985a8f5402d50327c640 IN  Mirror Protocol: UST Token0 BNB0.000190055
0x7e4de9f7df98eeede68f6a5da81a2b3936dc194ac825441858560a1979801bc5Burn111195232021-09-21 22:24:4920 mins ago0x6517e7592d28927e7ba4f03ab54079b527d6739d IN  Mirror Protocol: UST Token0 BNB0.000190055
0xb6eb07a8af787ac743861a516baf497b0412c50b939a7376f803ac0b9167b735Burn111194412021-09-21 22:20:4324 mins ago0x3f32a16b1f32f438ccec5e9f2302b3aab6ed21f8 IN  Mirror Protocol: UST Token0 BNB0.000190115
0x611fb16c3380d2843b821495a64e552a657fbf388c7211beaeef127f88ca933cBurn111193852021-09-21 22:17:5527 mins ago0xf33678d4b5b8b1ccc8381392efd77126add10111 IN  Mirror Protocol: UST Token0 BNB0.000190055
0x1206f2744e5a9eda5c3ce677c77429a5436b06019082b5735d04655d89dc1b87Burn111193422021-09-21 22:15:4629 mins ago0x5ab124f18056113d0884251d45544e2188af5fae IN  Mirror Protocol: UST Token0 BNB0.000190055
0x6f6686d4b0fc2b2930cfe82b0f67d688c3f3b07b39f68afd747cc6fc77ebb443Burn111193042021-09-21 22:13:5231 mins ago0x8a446e5cbee42d3d85620e59d19ac4083dab8d87 IN  Mirror Protocol: UST Token0 BNB0.000190055
0xd671de4a576b0691b007226edf8c6a7c2963ae2e45c34c0f0d2478db48b4fc6fBurn111192872021-09-21 22:13:0132 mins ago0x0589c7decedae61b46f40e959f830601209ee20c IN  Mirror Protocol: UST Token0 BNB0.000189995
0x7c3564f3c84d83896c5e0942ea5eb548ac6fd28add3c48ea0afe5bf252674bbaBurn111192202021-09-21 22:09:4035 mins ago0x8a446e5cbee42d3d85620e59d19ac4083dab8d87 IN  Mirror Protocol: UST Token0 BNB0.000189935
0xc91ed1125baa49e14c37047581dbc7ebde791e122af0762c9d7a09511a5eec6fBurn111191662021-09-21 22:06:5838 mins ago0xa39ba2cd8658d0b69ba1880dcfbb65216ab33056 IN  Mirror Protocol: UST Token0 BNB0.000190055
0x86fe21272fb278efd8fa8ad77b06bb55d5f8fe68cf00d1bdea8fe7bd7d145d0aBurn111190762021-09-21 22:02:2842 mins ago0xf08793c6e14d4d7f8baece3af748094aa2876858 IN  Mirror Protocol: UST Token0 BNB0.000114935
0x736045fcd9c63035035808e32d27441b067329b32734ac05d393088b04fb1a35Burn111190192021-09-21 21:59:3745 mins ago0x2589613767b370f50154070de5f55aaac46b8008 IN  Mirror Protocol: UST Token0 BNB0.000190055
0x7767f24a7cdc7c047027ea414297ecabe669d75f14afbc8ced69952910b38f78Burn111190112021-09-21 21:59:1345 mins ago0x7eee32322ca9d99d3349f9b8ada9ddab64e6ac28 IN  Mirror Protocol: UST Token0 BNB0.000189995
0x83da21869208ae93794237dab6640d260629b29f63ada08ebb305c9a1218df20Approve111190022021-09-21 21:58:4646 mins ago0x89a6ed7e49e86efa418b6fd5970d47fe88a27fe4 IN  Mirror Protocol: UST Token0 BNB0.000265254
0xae9abf0ee0f4f3afa27f8d748d56409de040c2275af371d4df3b1f9b40d75955Burn111189902021-09-21 21:58:1046 mins ago0x4e7a8c99395b275acc57bc3421e21157c4ca9d87 IN  Mirror Protocol: UST Token0 BNB0.000190055
0x3bac2aeb80d0efe789474e34c19dc5b1908a2061f0c9dc8b08f5316e32143ba3Burn111189762021-09-21 21:57:2847 mins ago0xa7adc93caa4c0e1e0461483eb6ec79c9d4e3ad82 IN  Mirror Protocol: UST Token0 BNB0.000190115
0x231fe4cfaee23d0f63e577ed19fb52ae071c719c7129cf6c1d29fbc97483080dBurn111189372021-09-21 21:55:3149 mins ago0xfecc2485c020812b2988880b63cd717ab3b68ea4 IN  Mirror Protocol: UST Token0 BNB0.000189995
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OVERVIEW

TerraUSD is a decentralized stablecoin that is scalable, yield bearing and interchain (1 UST = 1 USD)

Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x0d0d30ea7a88312e1f048e69d6f7d4b68b188de9ee05f42289a28bb6d86bcb3854713292021-03-07 11:59:24198 days 10 hrs ago PancakeSwap: UST-mNFLX Mirror Protocol: UST Token0 BNB
0x0d0d30ea7a88312e1f048e69d6f7d4b68b188de9ee05f42289a28bb6d86bcb3854713292021-03-07 11:59:24198 days 10 hrs ago PancakeSwap: Router Mirror Protocol: UST Token0 BNB
0x847fc369f6b08532dc5bb236c3590862610a660143de6ffb65d1c1db5584853f54713272021-03-07 11:59:18198 days 10 hrs ago 0x6efa207acde6e1cab77c1322cbde9628929ba88f Mirror Protocol: UST Token0 BNB
0x1c436bb16a6e9818f8a41fe746745741c7e2d7cc8ac7720b76328ab2be17567254713022021-03-07 11:58:03198 days 10 hrs ago PancakeSwap: UST-mNFLX Mirror Protocol: UST Token0 BNB
0x1c436bb16a6e9818f8a41fe746745741c7e2d7cc8ac7720b76328ab2be17567254713022021-03-07 11:58:03198 days 10 hrs ago PancakeSwap: UST-BUSD Mirror Protocol: UST Token0 BNB
0x1c436bb16a6e9818f8a41fe746745741c7e2d7cc8ac7720b76328ab2be17567254713022021-03-07 11:58:03198 days 10 hrs ago PancakeSwap: UST-BUSD Mirror Protocol: UST Token0 BNB
0x201298b0223976695051733dffc363d7822744e5c5074d4f31b00ea361161d7454713022021-03-07 11:58:03198 days 10 hrs ago PancakeSwap: UST-mNFLX Mirror Protocol: UST Token0 BNB
0x201298b0223976695051733dffc363d7822744e5c5074d4f31b00ea361161d7454713022021-03-07 11:58:03198 days 10 hrs ago PancakeSwap: UST Mirror Protocol: UST Token0 BNB
0x201298b0223976695051733dffc363d7822744e5c5074d4f31b00ea361161d7454713022021-03-07 11:58:03198 days 10 hrs ago PancakeSwap: UST Mirror Protocol: UST Token0 BNB
0xd31c1bc8dfc898f2d8591757ba8531768340de0ce4f340f1efbadbed59c163a454712892021-03-07 11:57:24198 days 10 hrs ago PancakeSwap: UST-BUSD Mirror Protocol: UST Token0 BNB
0xd31c1bc8dfc898f2d8591757ba8531768340de0ce4f340f1efbadbed59c163a454712892021-03-07 11:57:24198 days 10 hrs ago PancakeSwap: UST-BUSD Mirror Protocol: UST Token0 BNB
0xd88aa7a83d56110f793e95b26bdad7fd28baf3bb000c46b458e58500cf42361f54712462021-03-07 11:55:15198 days 10 hrs ago PancakeSwap: UST-BUSD Mirror Protocol: UST Token0 BNB
0xd88aa7a83d56110f793e95b26bdad7fd28baf3bb000c46b458e58500cf42361f54712462021-03-07 11:55:15198 days 10 hrs ago PancakeSwap: Router Mirror Protocol: UST Token0 BNB
0xc8bc0e1fa5ca5f02868b3574a9fcd7c8652ec012a788e079b705cc9b0e8b3e7e54712452021-03-07 11:55:12198 days 10 hrs ago PancakeSwap: UST-BUSD Mirror Protocol: UST Token0 BNB
0xc8bc0e1fa5ca5f02868b3574a9fcd7c8652ec012a788e079b705cc9b0e8b3e7e54712452021-03-07 11:55:12198 days 10 hrs ago PancakeSwap: UST Mirror Protocol: UST Token0 BNB
0xc8bc0e1fa5ca5f02868b3574a9fcd7c8652ec012a788e079b705cc9b0e8b3e7e54712452021-03-07 11:55:12198 days 10 hrs ago PancakeSwap: UST Mirror Protocol: UST Token0 BNB
0x9127bc0bc6aafe27afc40c8924a501b57a7553fb22fa0468a769d332d38b489f54712442021-03-07 11:55:09198 days 10 hrs ago PancakeSwap: UST-BUSD Mirror Protocol: UST Token0 BNB
0x9127bc0bc6aafe27afc40c8924a501b57a7553fb22fa0468a769d332d38b489f54712442021-03-07 11:55:09198 days 10 hrs ago PancakeSwap: UST Mirror Protocol: UST Token0 BNB
0x9127bc0bc6aafe27afc40c8924a501b57a7553fb22fa0468a769d332d38b489f54712442021-03-07 11:55:09198 days 10 hrs ago PancakeSwap: UST Mirror Protocol: UST Token0 BNB
0xd8add81bfce3c5f66d8f93ab73a519912ea9b572604e107e175dacaad8e16afc54712402021-03-07 11:54:57198 days 10 hrs ago PancakeSwap: UST-BUSD Mirror Protocol: UST Token0 BNB
0xd8add81bfce3c5f66d8f93ab73a519912ea9b572604e107e175dacaad8e16afc54712402021-03-07 11:54:57198 days 10 hrs ago PancakeSwap: UST Mirror Protocol: UST Token0 BNB
0xd8add81bfce3c5f66d8f93ab73a519912ea9b572604e107e175dacaad8e16afc54712402021-03-07 11:54:57198 days 10 hrs ago PancakeSwap: UST Mirror Protocol: UST Token0 BNB
0xfaf56a556a7d69ea2830a3fd0644b9939e42f99c0ed9838623503a81d596943c54712392021-03-07 11:54:54198 days 10 hrs ago PancakeSwap: UST-BUSD Mirror Protocol: UST Token0 BNB
0xfaf56a556a7d69ea2830a3fd0644b9939e42f99c0ed9838623503a81d596943c54712392021-03-07 11:54:54198 days 10 hrs ago PancakeSwap: UST Mirror Protocol: UST Token0 BNB
0xfaf56a556a7d69ea2830a3fd0644b9939e42f99c0ed9838623503a81d596943c54712392021-03-07 11:54:54198 days 10 hrs ago PancakeSwap: UST Mirror Protocol: UST Token0 BNB
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Loading

Contract Source Code Verified (Exact Match)

Contract Name:
WrappedUST

Compiler Version
v0.6.2+commit.bacdbe57

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 7 : WrappedToken.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;

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

contract WrappedToken is ERC20, Ownable {
    event Burn(address indexed _sender, bytes32 indexed _to, uint256 amount);

    constructor(string memory name, string memory symbol)
        public
        ERC20(name, symbol)
    {}

    function burn(uint256 amount, bytes32 to) public {
        _burn(_msgSender(), amount);

        emit Burn(_msgSender(), to, amount);
    }

    function mint(address account, uint256 amount) public onlyOwner {
        _mint(account, amount);
    }
}

contract WrappedLuna is WrappedToken {
    constructor() public WrappedToken("Wrapped LUNA Token", "LUNA") {}
}

contract WrappedUST is WrappedToken {
    constructor() public WrappedToken("Wrapped UST Token", "UST") {}
}

contract WrappedKRT is WrappedToken {
    constructor() public WrappedToken("Wrapped KRT Token", "KRT") {}
}

contract WrappedSDT is WrappedToken {
    constructor() public WrappedToken("Wrapped SDT Token", "SDT") {}
}

contract WrappedMNT is WrappedToken {
    constructor() public WrappedToken("Wrapped MNT Token", "MNT") {}
}

contract WrappedMIR is WrappedToken {
    constructor() public WrappedToken("Wrapped MIR Token", "MIR") {}
}

contract WrappedmAAPL is WrappedToken {
    constructor() public WrappedToken("Wrapped Mirror AAPL Token", "mAAPL") {}
}

contract WrappedmGOOGL is WrappedToken {
    constructor() public WrappedToken("Wrapped Mirror GOOGL Token", "mGOOGL") {}
}

contract WrappedmTSLA is WrappedToken {
    constructor() public WrappedToken("Wrapped Mirror TSLA Token", "mTSLA") {}
}

contract WrappedmNFLX is WrappedToken {
    constructor() public WrappedToken("Wrapped Mirror NFLX Token", "mNFLX") {}
}

contract WrappedmQQQ is WrappedToken {
    constructor() public WrappedToken("Wrapped Mirror QQQ Token", "mQQQ") {}
}

contract WrappedmTWTR is WrappedToken {
    constructor() public WrappedToken("Wrapped Mirror TWTR Token", "mTWTR") {}
}

contract WrappedmMSFT is WrappedToken {
    constructor() public WrappedToken("Wrapped Mirror MSFT Token", "mMSFT") {}
}

contract WrappedmAMZN is WrappedToken {
    constructor() public WrappedToken("Wrapped Mirror AMZN Token", "mAMZN") {}
}

contract WrappedmBABA is WrappedToken {
    constructor() public WrappedToken("Wrapped Mirror BABA Token", "mBABA") {}
}

contract WrappedmIAU is WrappedToken {
    constructor() public WrappedToken("Wrapped Mirror IAU Token", "mIAU") {}
}

contract WrappedmSLV is WrappedToken {
    constructor() public WrappedToken("Wrapped Mirror SLV Token", "mSLV") {}
}

contract WrappedmUSO is WrappedToken {
    constructor() public WrappedToken("Wrapped Mirror USO Token", "mUSO") {}
}

contract WrappedmVIXY is WrappedToken {
    constructor() public WrappedToken("Wrapped Mirror VIXY Token", "mVIXY") {}
}

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

pragma solidity ^0.6.0;

/*
 * @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 : Ownable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

import "../GSN/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.
 */
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 4 of 7 : SafeMath.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/**
 * @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;
    }
}

File 5 of 7 : ERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

import "../../GSN/Context.sol";
import "./IERC20.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.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;
    using Address for address;

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

pragma solidity ^0.6.0;

/**
 * @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 7 of 7 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.6.2;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies in extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return _functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

Settings
{
  "remappings": [],
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "evmVersion": "istanbul",
  "libraries": {},
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

[{"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":"_sender","type":"address"},{"indexed":true,"internalType":"bytes32","name":"_to","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Burn","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","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":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","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":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes32","name":"to","type":"bytes32"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","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":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","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":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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