Transaction Hash:
Block:
14077914 at Jan-26-2022 12:01:47 AM +UTC
Transaction Fee:
0.006540534437084433 ETH
$12.25
Gas Used:
51,861 Gas / 126.116627853 Gwei
Emitted Events:
250 |
Strong.Transfer( from=[Sender] 0xf16e9b0d03470827a95cdfd0cb8a8a3b46969b91, to=0x6934802049156f3A0cD80946817D6Ad6F3f5b4bA, value=9950000000000000000 )
|
Account State Difference:
Address | Before | After | State Difference | ||
---|---|---|---|---|---|
0x990f3419...87168017c | |||||
0xEA674fdD...16B898ec8
Miner
| (Ethermine) | 1,849.22545255833241527 Eth | 1,849.22553034983241527 Eth | 0.0000777915 | |
0xf16E9B0D...b46969B91 | (KuCoin 9) |
235.364451717824080363 Eth
Nonce: 200895
|
235.35791118338699593 Eth
Nonce: 200896
| 0.006540534437084433 |
Execution Trace
Strong.transfer( recipient=0x6934802049156f3A0cD80946817D6Ad6F3f5b4bA, amount=9950000000000000000 ) => ( True )
1{"Address.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity \u003e0.6.99 \u003c0.8.0;\n\n/**\n * @dev Collection of functions relatedto the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n *====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not acontract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - anexternally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where acontract lived, but was destroyed\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // Thismethod relies in extcodesize, which returns 0 for contracts in\n // construction, since the code is only stored at the end of the\n// constructor execution.\n\n uint256 size;\n // solhint-disable-next-line no-inline-assembly\n assembly { size := extcodesize(account) }\n return size \u003e 0;\n }\n\n /**\n * @dev Replacement for Solidity\u0027s `transfer`: sends `amount` wei to\n *`recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases thegas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable toreceive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to notcreate reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(addresspayable recipient, uint256 amount) internal {\n require(address(this).balance \u003e= amount, \"Address: insufficient balance\");\n\n// solhint-disable-next-line avoid-low-level-calls, avoid-call-value\n (bool success, ) = recipient.call{ value: amount }(\"\");\nrequire(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function callusing a low level `call`. A\n * plain`call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If`target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returnsthe raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be acontract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallbackrevert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data,string memory errorMessage) internal returns (bytes memory) {\n return _functionCallWithValue(target, data, 0, errorMessage);\n }\n\n/**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n*\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity functionmust be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(address target, bytes memory data, uint256value) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with`errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n functionfunctionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {\nrequire(address(this).balance \u003e= value, \"Address: insufficient balance for call\");\n return _functionCallWithValue(target, data,value, errorMessage);\n }\n\n function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {\n require(isContract(target), \"Address: call to non-contract\");\n\n // solhint-disable-next-lineavoid-low-level-calls\n (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);\n if (success) {\nreturn returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length \u003e0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n\n // solhint-disable-next-lineno-inline-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32,returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n}\n}\n"},"Context.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity \u003e0.6.99 \u003c0.8.0;\n\n/**\n * @dev Provides informationabout the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with GSN meta-transactions the account sendingand\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required forintermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address payable){\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes memory) {\n this; // silence statemutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691\n return msg.data;\n }\n}\n"},"IERC20.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity \u003e0.6.99 \u003c0.8.0;\n\n/**\n * @dev Interface of the ERC20standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Returns the amount of tokens in existence.\n */\n functiontotalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n functionbalanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller\u0027s account to`recipient`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n*/\n function transfer(address recipient, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number oftokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n* This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external viewreturns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller\u0027s tokens.\n *\n * Returns aboolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings therisk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigatethis race\n * condition is to first reduce the spender\u0027s allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(addressspender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `sender` to `recipient` using the\n *allowance mechanism. `amount` is then deducted from the caller\u0027s\n * allowance.\n *\n * Returns a boolean value indicating whetherthe operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(address sender, address recipient, uint256amount) external returns (bool);\n\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n/**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n*/\n event Approval(address indexed owner, address indexed spender, uint256 value);\n}\n"},"SafeMath.sol":{"content":"// SPDX-License-Identifier: MIT\npragma solidity \u003e0.6.99 \u003c0.8.0;\n\n/**\n * @dev Wrappers over Solidity\u0027s arithmetic operations with addedoverflow\n * checks.\n *\n * Arithmetic operations in Solidity wrap on overflow. This can easily result\n * in bugs, because programmers usuallyassume that an overflow raises an\n * error, which is the standard behavior in high level programming languages.\n * `SafeMath` restores thisintuition by reverting the transaction when an\n * operation overflows.\n *\n * Using this library instead of the unchecked operations eliminatesan entire\n * class of bugs, so it\u0027s recommended to use it always.\n */\nlibrary SafeMath {\n /**\n * @dev Returns the addition of twounsigned integers, reverting on\n * overflow.\n *\n * Counterpart to Solidity\u0027s `+` operator.\n *\n * Requirements:\n*\n * - Addition cannot overflow.\n */\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n require(c \u003e= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n /**\n * @dev Returns the subtraction oftwo unsigned integers, reverting on\n * overflow (when the result is negative).\n *\n * Counterpart to Solidity\u0027s `-` operator.\n*\n * Requirements:\n *\n * - Subtraction cannot overflow.\n */\n function sub(uint256 a, uint256 b) internal pure returns(uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n /**\n * @dev Returns the subtraction of two unsignedintegers, reverting with custom message on\n * overflow (when the result is negative).\n *\n * Counterpart to Solidity\u0027s `-`operator.\n *\n * Requirements:\n *\n * - Subtraction cannot overflow.\n */\n function sub(uint256 a, uint256 b, stringmemory errorMessage) internal pure returns (uint256) {\n require(b \u003c= a, errorMessage);\n uint256 c = a - b;\n\n return c;\n }\n\n /**\n * @dev Returns the multiplication of two unsigned integers, reverting on\n * overflow.\n *\n * Counterpart toSolidity\u0027s `*` operator.\n *\n * Requirements:\n *\n * - Multiplication cannot overflow.\n */\n function mul(uint256 a,uint256 b) internal pure returns (uint256) {\n // Gas optimization: this is cheaper than requiring \u0027a\u0027 not being zero, but the\n// benefit is lost if \u0027b\u0027 is also tested.\n // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\nif (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n /**\n * @dev Returns the integer division of two unsigned integers. Reverts on\n * division by zero.The result is rounded towards zero.\n *\n * Counterpart to Solidity\u0027s `/` operator. Note: this function uses a\n * `revert` opcode(which leaves remaining gas untouched) while Solidity\n * uses an invalid opcode to revert (consuming all remaining gas).\n *\n *Requirements:\n *\n * - The divisor cannot be zero.\n */\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\nreturn div(a, b, \"SafeMath: division by zero\");\n }\n\n /**\n * @dev Returns the integer division of two unsigned integers.Reverts with custom message on\n * division by zero. The result is rounded towards zero.\n *\n * Counterpart to Solidity\u0027s `/`operator. Note: this function uses a\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\n * uses an invalid opcodeto revert (consuming all remaining gas).\n *\n * Requirements:\n *\n * - The divisor cannot be zero.\n */\n function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n require(b \u003e 0, errorMessage);\n uint256 c= a / b;\n // assert(a == b * c + a % b); // There is no case in which this doesn\u0027t hold\n\n return c;\n }\n\n /**\n *@dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n * Reverts when dividing by zero.\n *\n *Counterpart to Solidity\u0027s `%` operator. This function uses a `revert`\n * opcode (which leaves remaining gas untouched) while Solidityuses an\n * invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n *\n * - The divisor cannot be zero.\n */\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n return mod(a, b, \"SafeMath: modulo by zero\");\n}\n\n /**\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n * Reverts with custom messagewhen dividing by zero.\n *\n * Counterpart to Solidity\u0027s `%` operator. This function uses a `revert`\n * opcode (which leavesremaining gas untouched) while Solidity uses an\n * invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n*\n * - The divisor cannot be zero.\n */\n function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns(uint256) {\n require(b != 0, errorMessage);\n return a % b;\n }\n}\n"},"Strong.sol":{"content":"// SPDX-License-Identifier:MIT\npragma solidity \u003e0.6.99 \u003c0.8.0;\n\nimport \"./Context.sol\";\nimport \"./IERC20.sol\";\nimport \"./SafeMath.sol\";\nimport \"./Address.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * We have followed general OpenZeppelin guidelines: functionsrevert instead\n * of returning `false` on failure. This behavior is nonetheless conventional\n * and does not conflict with the expectations ofERC20 applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstructthe allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as itisn\u0027t required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have beenadded to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract Strong is Context, IERC20 {\n usingSafeMath for uint256;\n using Address for address;\n\n mapping (address =\u003e uint256) private _balances;\n\n mapping (address =\u003emapping (address =\u003e uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name = \"Strong\";\n stringprivate _symbol = \"STRONG\";\n uint8 private _decimals = 18;\n\n /**\n * @dev Sets the specified balances for the specified addresses.\u0027addresses\u0027 and \u0027balances\u0027 arrays\n * are to be index aligned.\n */\n constructor (address[] memory addresses,uint[] memory balances) {\n require(addresses.length \u003e 0 \u0026\u0026 balances.length \u003e 0, \"STRONG: array length must be greaterthan zero\");\n require(addresses.length == balances.length, \"STRONG: arrays length mismatch\");\n\n for (uint i = 0; i \u003caddresses.length; i++) {\n _mint(addresses[i], balances[i]);\n }\n require(_totalSupply == 10000000e18, \"STRONG:totalSupply must equal 10 million\");\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public viewreturns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n* name.\n */\n function symbol() public view returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returnsthe number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n *be displayed to a user as `5,05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is\n * called.\n *\n * NOTE: This information is only used for_display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view returns (uint8) {\n return _decimals;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n* @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view override returns (uint256) {\n return_balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `recipient` cannot be thezero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address recipient, uint256 amount)public virtual override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n return true;\n }\n\n /**\n * @devSee {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\nreturn _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * Requirements:\n *\n * - `spender`cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n_approve(_msgSender(), spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an{Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20};\n *\n* Requirements:\n * - `sender` and `recipient` cannot be the zero address.\n * - `sender` must have a balance of at least `amount`.\n* - the caller must have allowance for ``sender``\u0027s tokens of at least\n * `amount`.\n */\n function transferFrom(address sender,address recipient, uint256 amount) public virtual override returns (bool) {\n _transfer(sender, recipient, amount);\n _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, \"STRONG: transfer amount exceeds allowance\"));\n return true;\n }\n\n/**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} thatcan be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updatedallowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(addressspender, uint256 addedValue) public virtual returns (bool) {\n _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n*\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n *Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n* - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(addressspender, uint256 subtractedValue) public virtual returns (bool) {\n _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, \"STRONG: decreased allowance below zero\"));\n return true;\n }\n\n /**\n * @dev Moves tokens `amount` from`sender` to `recipient`.\n *\n * This is internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatictoken fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `sender` cannot bethe zero address.\n * - `recipient` cannot be the zero address.\n * - `sender` must have a balance of at least `amount`.\n */\nfunction _transfer(address sender, address recipient, uint256 amount) internal virtual {\n require(sender != address(0), \"STRONG: transferfrom the zero address\");\n require(recipient != address(0), \"STRONG: transfer to the zero address\");\n\n _beforeTokenTransfer(sender, recipient, amount);\n\n _balances[sender] = _balances[sender].sub(amount, \"STRONG: transfer amount exceeds balance\");\n_balances[recipient] = _balances[recipient].add(amount);\n emit Transfer(sender, recipient, amount);\n }\n\n /** @dev Creates `amount`tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zeroaddress.\n *\n * Requirements\n *\n * - `to` cannot be the zero address.\n */\n function _mint(address account, uint256amount) internal virtual {\n require(account != address(0), \"STRONG: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply = _totalSupply.add(amount);\n _balances[account] = _balances[account].add(amount);\nemit Transfer(address(0), account, amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.\n*\n * This is internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * -`spender` cannot be the zero address.\n */\n function _approve(address owner, address spender, uint256 amount) internal virtual {\nrequire(owner != address(0), \"STRONG: approve from the zero address\");\n require(spender != address(0), \"STRONG: approve to the zeroaddress\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Hookthat is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when`from` and `to` are both non-zero, `amount` of ``from``\u0027s tokens\n * will be to transferred to `to`.\n * - when `from` is zero,`amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``\u0027s tokens will be burned.\n * - `from` and `to`are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\nfunction _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }\n}\n"}}