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0xc865a2d347e81383d9ce04f47a7676c97330d0696039f12475f3f4d725877912 | Transfer | (pending) | 8 hrs ago | IN | 0 ETH | (Pending) | |||
0xe752af71d500e380d12d7c186346118f54383c12a48fb225d96dd09879e4b85a | Transfer | (pending) | 16 hrs ago | IN | 0 ETH | (Pending) | |||
0xec58b77d3643753f161faf063ebf9a175dcc5c6d6a78cc5ff839c3804b9d9ea2 | Transfer | (pending) | 26 hrs ago | IN | 0 ETH | (Pending) | |||
0xc32e01152b4240a49ee5b7dad16fcda28ce22d3843756c84db4fa204a4ead0e2 | Transfer | (pending) | 30 hrs ago | IN | 0 ETH | (Pending) | |||
0xa6b7c2d8067273990fe5f0fbfc8aa273d1ef0f0a400fcc0b58c559dd726dc8d8 | Approve | (pending) | 8 days ago | IN | 0 ETH | (Pending) | |||
0x476c54c1e7f6d4e8b7526c7faa7da16079ed6010f69a3cd9c4dcb12e686b8b62 | Transfer | (pending) | 15 days ago | IN | 0 ETH | (Pending) | |||
Transfer | 21463666 | 42 mins ago | IN | 0 ETH | 0.00021282 | ||||
Approve | 21463646 | 46 mins ago | IN | 0 ETH | 0.0002143 | ||||
Approve | 21463291 | 1 hr ago | IN | 0 ETH | 0.00018941 | ||||
Approve | 21462926 | 3 hrs ago | IN | 0 ETH | 0.00021876 | ||||
Transfer | 21462258 | 5 hrs ago | IN | 0 ETH | 0.00027539 | ||||
Transfer | 21461579 | 7 hrs ago | IN | 0 ETH | 0.00028242 | ||||
Transfer | 21461559 | 7 hrs ago | IN | 0 ETH | 0.00023183 | ||||
Transfer | 21461309 | 8 hrs ago | IN | 0 ETH | 0.0002656 | ||||
Approve | 21459014 | 16 hrs ago | IN | 0 ETH | 0.00044035 | ||||
Transfer | 21458756 | 17 hrs ago | IN | 0 ETH | 0.00043537 | ||||
Approve | 21458692 | 17 hrs ago | IN | 0 ETH | 0.00050162 | ||||
Transfer | 21458313 | 18 hrs ago | IN | 0 ETH | 0.00050681 | ||||
Approve | 21457764 | 20 hrs ago | IN | 0 ETH | 0.00017975 | ||||
Approve | 21456981 | 23 hrs ago | IN | 0 ETH | 0.0002491 | ||||
Transfer | 21456819 | 23 hrs ago | IN | 0 ETH | 0.00041504 | ||||
Transfer | 21455905 | 26 hrs ago | IN | 0 ETH | 0.00041745 | ||||
Transfer | 21455470 | 28 hrs ago | IN | 0 ETH | 0.00029398 | ||||
Transfer | 21455171 | 29 hrs ago | IN | 0 ETH | 0.00025541 | ||||
Transfer | 21455127 | 29 hrs ago | IN | 0 ETH | 0.00051204 |
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Contract Name:
SocialGoodToken
Compiler Version
v0.5.17+commit.d19bba13
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2020-07-20 */ pragma solidity 0.5.17; /** * @dev Interface of the ERC20 standard as defined in the EIP. Does not include * the optional functions; to access them see {ERC20Detailed}. */ 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 ); } /** * @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. * * _Available since v2.4.0._ */ 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. * * _Available since v2.4.0._ */ function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 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. * * _Available since v2.4.0._ */ function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } /** * @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 {ERC20Mintable}. * * 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 IERC20 { using SafeMath for uint256; mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view 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 returns (bool) { _transfer(msg.sender, recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public returns (bool) { _approve(msg.sender, 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 returns (bool) { _transfer(sender, recipient, amount); _approve( sender, msg.sender, _allowances[sender][msg.sender].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 returns (bool) { _approve( msg.sender, spender, _allowances[msg.sender][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 returns (bool) { _approve( msg.sender, spender, _allowances[msg.sender][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 { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _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 { require(account != address(0), "ERC20: mint to the zero address"); _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 { require(account != address(0), "ERC20: burn from the zero address"); _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 is 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 { 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 Destroys `amount` tokens from `account`.`amount` is then deducted * from the caller's allowance. * * See {_burn} and {_approve}. */ function _burnFrom(address account, uint256 amount) internal { _burn(account, amount); _approve( account, msg.sender, _allowances[account][msg.sender].sub( amount, "ERC20: burn amount exceeds allowance" ) ); } } /** * @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. * * 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 { address private _owner; event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() internal { _owner = msg.sender; emit OwnershipTransferred(address(0), _owner); } /** * @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(isOwner(), "Ownable: caller is not the owner"); _; } /** * @dev Returns true if the caller is the current owner. */ function isOwner() public view returns (bool) { return msg.sender == _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 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 onlyOwner { _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). */ function _transferOwnership(address newOwner) internal { require( newOwner != address(0), "Ownable: new owner is the zero address" ); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ contract Pausable is Ownable { /** * @dev Emitted when the pause is triggered by a pauser (`account`). */ event Paused(address account); /** * @dev Emitted when the pause is lifted by a pauser (`account`). */ event Unpaused(address account); bool private _paused; /** * @dev Initializes the contract in unpaused state. Assigns the Pauser role * to the deployer. */ constructor() internal { _paused = false; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view returns (bool) { return _paused; } /** * @dev Modifier to make a function callable only when the contract is not paused. */ modifier whenNotPaused() { require(!_paused, "Pausable: paused"); _; } /** * @dev Modifier to make a function callable only when the contract is paused. */ modifier whenPaused() { require(_paused, "Pausable: not paused"); _; } /** * @dev Called by a pauser to pause, triggers stopped state. */ function pause() public onlyOwner whenNotPaused { _paused = true; emit Paused(msg.sender); } /** * @dev Called by a pauser to unpause, returns to normal state. */ function unpause() public onlyOwner whenPaused { _paused = false; emit Unpaused(msg.sender); } } /** * @title Pausable token * @dev ERC20 with pausable transfers and allowances. * * Useful if you want to stop trades until the end of a crowdsale, or have * an emergency switch for freezing all token transfers in the event of a large * bug. */ contract ERC20Pausable is ERC20, Pausable { function transfer(address to, uint256 value) public whenNotPaused returns (bool) { return super.transfer(to, value); } function transferFrom( address from, address to, uint256 value ) public whenNotPaused returns (bool) { return super.transferFrom(from, to, value); } function approve(address spender, uint256 value) public whenNotPaused returns (bool) { return super.approve(spender, value); } function increaseAllowance(address spender, uint256 addedValue) public whenNotPaused returns (bool) { return super.increaseAllowance(spender, addedValue); } function decreaseAllowance(address spender, uint256 subtractedValue) public whenNotPaused returns (bool) { return super.decreaseAllowance(spender, subtractedValue); } } /** * @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). */ contract ERC20Burnable is ERC20 { /** * @dev Destroys `amount` tokens from the caller. * * See {ERC20-_burn}. */ function burn(uint256 amount) public { _burn(msg.sender, amount); } /** * @dev See {ERC20-_burnFrom}. */ function burnFrom(address account, uint256 amount) public { _burnFrom(account, amount); } } /** * @dev Extension of {ERC20} that adds a set of accounts with the {MinterRole}, * which have permission to mint (create) new tokens as they see fit. * * At construction, the deployer of the contract is the only minter. */ contract ERC20Mintable is ERC20, Ownable { /** * @dev See {ERC20-_mint}. * * Requirements: * * - the caller must have the {MinterRole}. */ function mint(address account, uint256 amount) public onlyOwner returns (bool) { _mint(account, amount); return true; } } /** * @dev Extension of {ERC20Mintable} that adds a cap to the supply of tokens. */ contract ERC20Capped is ERC20Mintable { uint256 private _cap; uint256 private _capUsed; uint256 private _airdropCap; uint256 private _airdropCapUsed; /** * @dev Sets the value of the `cap`. This value is immutable, it can only be * set once during construction. */ constructor(uint256 cap, uint256 airdropCap) public { require(cap != 0, "ERC20Capped: cap is 0"); require(airdropCap != 0, "ERC20Capped: airdrop cap is 0"); _cap = cap; _airdropCap = airdropCap; } /** * @dev Returns the normal cap. */ function cap() public view returns (uint256) { return _cap; } /** * @dev Returns the airdrop cap. */ function airdropCap() public view returns (uint256) { return _airdropCap; } /** * @dev Returns the normal cap used. */ function capUsed() public view returns (uint256) { return _capUsed; } /** * @dev Returns the airdrop cap used. */ function airdropCapUsed() public view returns (uint256) { return _airdropCapUsed; } /** * @dev See {ERC20Mintable-mint}. * * Requirements: * * - `value` must not cause the cap used to go over the cap. */ function _mint(address account, uint256 value) internal { uint256 newCapUsed = _capUsed.add(value); require(newCapUsed <= _cap, "ERC20Capped: cap exceeded"); super._mint(account, value); _capUsed = newCapUsed; } /** * @dev See {ERC20Mintable-mint}. * * Requirements: * * - `value` must not cause the airdrop cap used to go over the airdrop cap. */ function _airdropMint(address account, uint256 value) internal { super._mint(account, value); } /** * @dev Used for increasing the airdrop cap used when owner lockup the token. * * Requirements: * * - `value` must not cause the airdrop cap used to go over the cap. */ function _incrementUsedAirdropCap(uint256 value) internal { uint256 newAirdropCapUsed = _airdropCapUsed.add(value); require( newAirdropCapUsed <= _airdropCap, "ERC20Capped: airdrop cap exceeded" ); _airdropCapUsed = newAirdropCapUsed; } } /** * @title Standard ERC20 token * * @dev Implementation of the basic standard token. * @dev https://github.com/ethereum/EIPs/issues/20 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol */ contract SocialGoodToken is ERC20Pausable, ERC20Burnable, ERC20Mintable, ERC20Capped { string private constant _name = "SocialGood"; string private constant _symbol = "SG"; uint8 private constant _decimals = 18; // set maximum token normal hard cap uint256 private constant NORMAL_HARD_CAP = 209250000e18; // 209,250,000 SG // set maximum token airdrop hard cap uint256 private constant AIRDROP_HARD_CAP = 750000e18; // 750,000 SG mapping(address => uint256) private _lockupAmounts; constructor() public ERC20Capped(NORMAL_HARD_CAP, AIRDROP_HARD_CAP) {} /** * @dev Returns the name of the token. */ function name() public pure returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public pure 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. * * 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 pure returns (uint8) { return _decimals; } function getAddressLockupAmount(address _account) public view returns (uint256) { return _lockupAmounts[_account]; } /** * @dev Destroys `amount` tokens from the caller. * * See {ERC20-_burn}. */ function burn(uint256 amount) public onlyOwner { _burn(msg.sender, amount); } /** * @dev See {ERC20-_burnFrom}. */ function burnFrom(address account, uint256 amount) public onlyOwner { _burnFrom(account, amount); } /** * @dev Used for validating inputs before execute lockup */ function _preValidateAirdrop(address _account, uint256 _amount) internal pure { require( _account != address(0), "SocialGoodToken: airdrop target address is empty" ); require(_amount != 0, "SocialGoodToken: amount is zero"); } /** * @dev Used for migrating old SG token to new SG token. * The token amount will be locked until the owner unlock it manually. */ function airdropLockup( address[] calldata _accounts, uint256[] calldata _amounts ) external onlyOwner whenNotPaused { require( _accounts.length == _amounts.length, "SocialGoodToken: the length of accounts, amounts are not the same" ); uint256 length = _accounts.length; for (uint256 i = 0; i != length; i++) { _preValidateAirdrop(_accounts[i], _amounts[i]); _lockup(_accounts[i], _amounts[i]); } } /** * @dev Used for locking up token amount of any address. * This is an internal function, only called from the owner's airdropLockup function. */ function _lockup(address _account, uint256 _amount) internal { _lockupAmounts[_account] = _lockupAmounts[_account].add(_amount); _incrementUsedAirdropCap(_amount); } /** * @dev Used for unlocking token when migrating from old SG token to new SG token. * The token amount will be minted to selected addresses up to the token issue limit. * Data will be read from _lockupAmounts and reset to zero after token is minted. */ function unlocks(address[] calldata _accounts) external onlyOwner whenNotPaused { uint256 length = _accounts.length; for (uint256 i = 0; i != length; i++) { _unlock(_accounts[i]); } } function _unlock(address _account) internal { require( _lockupAmounts[_account] != 0, "SocialGoodToken: amount is zero" ); _airdropMint(_account, _lockupAmounts[_account]); _lockupAmounts[_account] = 0; } }
Contract Security Audit
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[{"inputs":[],"payable":false,"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":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","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"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"constant":true,"inputs":[],"name":"airdropCap","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"airdropCapUsed","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address[]","name":"_accounts","type":"address[]"},{"internalType":"uint256[]","name":"_amounts","type":"uint256[]"}],"name":"airdropLockup","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burn","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burnFrom","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"cap","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"capUsed","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"_account","type":"address"}],"name":"getAddressLockupAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"isOwner","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"pause","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"renounceOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address[]","name":"_accounts","type":"address[]"}],"name":"unlocks","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"unpause","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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A project claims to provide crypto point return service for shopping at retail stores, with patents.Loading...
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.