ERC-20
Stablecoin
Overview
Max Total Supply
294,537,378.093005794239793908 USTC
Holders
48,145 (0.00%)
Market
Price
$0.02 @ 0.000006 ETH (-4.78%)
Onchain Market Cap
$6,832,348.22
Circulating Supply Market Cap
$0.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
0.000000794781706983 USTCValue
$0.00 ( ~0 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | PancakeSwap (v2) | 0X23396CF899CA06C4472205FC903BDB4DE249D6FC-0XE9E7CEA3DEDCA5984780BAFC599BD69ADD087D56 | $0.0232 0.0000060 Eth | $13,465.72 577,590.207 0X23396CF899CA06C4472205FC903BDB4DE249D6FC | 82.5241% |
2 | Uniswap V2 (Ethereum) | 0X09A3ECAFA817268F77BE1283176B946C4FF2E608-0XA47C8BF37F92ABED4A126BDA807A7B7498661ACD | $0.0236 0.0000061 Eth | $1,459.78 48,238.649 0X09A3ECAFA817268F77BE1283176B946C4FF2E608 | 6.8922% |
3 | Biswap | 0X23396CF899CA06C4472205FC903BDB4DE249D6FC-0XE9E7CEA3DEDCA5984780BAFC599BD69ADD087D56 | $0.0233 0.0000060 Eth | $1,028.37 44,228.646 0X23396CF899CA06C4472205FC903BDB4DE249D6FC | 6.3192% |
4 | PancakeSwap (v2) | 0X23396CF899CA06C4472205FC903BDB4DE249D6FC-0X55D398326F99059FF775485246999027B3197955 | $0.0233 0.0000060 Eth | $785.38 31,852.567 0X23396CF899CA06C4472205FC903BDB4DE249D6FC | 4.5510% |
5 | PancakeSwap V1 (BSC) | 0X23396CF899CA06C4472205FC903BDB4DE249D6FC-0XE9E7CEA3DEDCA5984780BAFC599BD69ADD087D56 | $0.0231 0.0000060 Eth | $301.02 12,962.989 0X23396CF899CA06C4472205FC903BDB4DE249D6FC | 1.8521% |
6 | Sushiswap V3 (Ethereum) | 0XA47C8BF37F92ABED4A126BDA807A7B7498661ACD-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.026 0.0000072 Eth | $187.24 7,189.170 0XA47C8BF37F92ABED4A126BDA807A7B7498661ACD | 1.0272% |
7 | PancakeSwap (v2) | 0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C-0X23396CF899CA06C4472205FC903BDB4DE249D6FC | $0.0233 0.0000060 Eth | $182.52 0.259 0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | 0.0000% |
8 | Dfyn | 0X692597B009D13C4049A947CAB2239B7D6517875F-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $0.0235 0.0000061 Eth | $166.66 7,006.918 0X692597B009D13C4049A947CAB2239B7D6517875F | 1.0011% |
9 | Curve (Ethereum) | 0X6C3F90F043A72FA612CBAC8115EE7E52BDE6E490-0XA47C8BF37F92ABED4A126BDA807A7B7498661ACD | $0.0259 0.0000067 Eth | $157.74 151.882 0X6C3F90F043A72FA612CBAC8115EE7E52BDE6E490 | 0.0217% |
10 | Defi Kingdoms | 0X224E64EC1BDCE3870A6A6C777EDD450454068FEC-0X72CB10C6BFA5624DD07EF608027E366BD690048F | $0.0332 0.0000086 Eth | $125.84 3,797.047 0X224E64EC1BDCE3870A6A6C777EDD450454068FEC | 0.5425% |
11 | Biswap | 0X23396CF899CA06C4472205FC903BDB4DE249D6FC-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $0.0232 0.0000060 Eth | $119.55 4,824.417 0X23396CF899CA06C4472205FC903BDB4DE249D6FC | 0.6893% |
12 | Sushiswap (Harmony) | 0X224E64EC1BDCE3870A6A6C777EDD450454068FEC-0X6983D1E6DEF3690C4D616B13597A09E6193EA013 | $0.0333 0.0000086 Eth | $106.83 3,078.398 0X224E64EC1BDCE3870A6A6C777EDD450454068FEC | 0.4398% |
13 | Defi Kingdoms | 0X224E64EC1BDCE3870A6A6C777EDD450454068FEC-0X985458E523DB3D53125813ED68C274899E9DFAB4 | $0.0333 0.0000086 Eth | $102.20 2,977.065 0X224E64EC1BDCE3870A6A6C777EDD450454068FEC | 0.4254% |
14 | Curve (Ethereum) | 0X99D8A9C45B2ECA8864373A26D1459E3DFF1E17F3-0XA47C8BF37F92ABED4A126BDA807A7B7498661ACD | $0.0273 0.0000071 Eth | $95.93 96.112 0X99D8A9C45B2ECA8864373A26D1459E3DFF1E17F3 | 0.0137% |
15 | Defi Kingdoms | 0X224E64EC1BDCE3870A6A6C777EDD450454068FEC-0XCF664087A5BB0237A0BAD6742852EC6C8D69A27A | $0.0333 0.0000086 Eth | $65.98 2,024.395 0X224E64EC1BDCE3870A6A6C777EDD450454068FEC | 0.2892% |
16 | PancakeSwap (v2) | 0X2170ED0880AC9A755FD29B2688956BD959F933F8-0X23396CF899CA06C4472205FC903BDB4DE249D6FC | $0.0271 0.0000072 Eth | $63.16 0.016 0X2170ED0880AC9A755FD29B2688956BD959F933F8 | 0.0000% |
17 | Dfyn | 0X692597B009D13C4049A947CAB2239B7D6517875F-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $0.0234 0.0000060 Eth | $53.26 2,243.346 0X692597B009D13C4049A947CAB2239B7D6517875F | 0.3205% |
18 | PancakeSwap (v2) | 0X23396CF899CA06C4472205FC903BDB4DE249D6FC-0X8AC76A51CC950D9822D68B83FE1AD97B32CD580D | $0.0231 0.0000060 Eth | $48.12 2,061.717 0X23396CF899CA06C4472205FC903BDB4DE249D6FC | 0.2946% |
19 | Sushiswap (Harmony) | 0X224E64EC1BDCE3870A6A6C777EDD450454068FEC-0XCF664087A5BB0237A0BAD6742852EC6C8D69A27A | $0.0328 0.0000085 Eth | $19.39 592.035 0X224E64EC1BDCE3870A6A6C777EDD450454068FEC | 0.0846% |
20 | Sushiswap (Harmony) | 0X224E64EC1BDCE3870A6A6C777EDD450454068FEC-0X985458E523DB3D53125813ED68C274899E9DFAB4 | $0.0335 0.0000086 Eth | $12.96 375.436 0X224E64EC1BDCE3870A6A6C777EDD450454068FEC | 0.0536% |
21 | Gravity Finance | 0X692597B009D13C4049A947CAB2239B7D6517875F-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $0.0272 0.0000070 Eth | $12.82 461.295 0X692597B009D13C4049A947CAB2239B7D6517875F | 0.0659% |
22 | Uniswap V2 (Ethereum) | 0XA47C8BF37F92ABED4A126BDA807A7B7498661ACD-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.0236 0.0000061 Eth | $9.87 417.817 0XA47C8BF37F92ABED4A126BDA807A7B7498661ACD | 0.0597% |
23 | Trisolaris | 0X5CE9F0B6AFB36135B5DDBF11705CEB65E634A9DC-0XC42C30AC6CC15FAC9BD938618BCAA1A1FAE8501D | $0.0474 0.0000122 Eth | $8.96 188.898 0X5CE9F0B6AFB36135B5DDBF11705CEB65E634A9DC | 0.0270% |
24 | Defi Kingdoms | 0X224E64EC1BDCE3870A6A6C777EDD450454068FEC-0XD74433B187CF0BA998AD9BE3486B929C76815215 | $0.0322 0.0000083 Eth | $2.84 90.383 0X224E64EC1BDCE3870A6A6C777EDD450454068FEC | 0.0129% |
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)
// 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") {} }
// 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; } }
// 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; } }
// 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; } }
// 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 { } }
// 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); }
// 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); } } } }
{ "remappings": [], "optimizer": { "enabled": false, "runs": 200 }, "evmVersion": "istanbul", "libraries": { "": {} }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } } }
Contract Security Audit
- 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":"_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"}]
Contract Creation Code
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