Transaction Hash:
Block:
10514702 at Jul-23-2020 08:37:28 AM +UTC
Transaction Fee:
0.002485212049670196 ETH
$7.56
Gas Used:
34,044 Gas / 73.000001459 Gwei
Account State Difference:
Address | Before | After | State Difference | ||
---|---|---|---|---|---|
0x829BD824...93333A830
Miner
| (F2Pool Old) | 6,372.000337049044340314 Eth | 6,372.00282226109401051 Eth | 0.002485212049670196 | |
0xa5769FCE...a9C8a62D5 |
0.052 Eth
Nonce: 0
|
0.049514787950329804 Eth
Nonce: 1
| 0.002485212049670196 |
Execution Trace
DOSToken.transfer( dst=0x8BABfDee24093825Ab35AD5287725A2952C47452, wad=14443294950000000000000000 )
0x68420d00dd98bcc0bc670eae2a0dec3fd1afc4b1.ebe9e3f9( )
-
0x7815e16ed76837c54fe4ebab8d77d1a8b0b7dfdc.53962c55( )
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transfer[DOSToken (ln:295)]
transferFrom[DOSToken (ln:296)]
isContract[DOSToken (ln:303)]
onTransfer[DOSToken (ln:304)]
sub[DOSToken (ln:310)]
sub[DOSToken (ln:313)]
add[DOSToken (ln:314)]
Transfer[DOSToken (ln:316)]
pragma solidity >=0.5.0 <0.6.0; /// @dev The token controller contract must implement these functions contract TokenController { /// @notice Notifies the controller about a token transfer allowing the /// controller to react if desired /// @param _from The origin of the transfer /// @param _fromBalance Original token balance of _from address /// @param _amount The amount of the transfer /// @return The adjusted transfer amount filtered by a specific token controller. function onTokenTransfer(address _from, uint _fromBalance, uint _amount) public returns(uint); } contract DSAuthority { function canCall( address src, address dst, bytes4 sig ) public view returns (bool); } contract DSAuthEvents { event LogSetAuthority (address indexed authority); event LogSetOwner (address indexed owner); } contract DSAuth is DSAuthEvents { DSAuthority public authority; address public owner; constructor() public { owner = msg.sender; emit LogSetOwner(msg.sender); } function setOwner(address owner_) public auth { owner = owner_; emit LogSetOwner(owner); } function setAuthority(DSAuthority authority_) public auth { authority = authority_; emit LogSetAuthority(address(authority)); } modifier auth { require(isAuthorized(msg.sender, msg.sig), "ds-auth-unauthorized"); _; } function isAuthorized(address src, bytes4 sig) internal view returns (bool) { if (src == address(this)) { return true; } else if (src == owner) { return true; } else if (authority == DSAuthority(0)) { return false; } else { return authority.canCall(src, address(this), sig); } } } contract DSNote { event LogNote( bytes4 indexed sig, address indexed guy, bytes32 indexed foo, bytes32 indexed bar, uint256 wad, bytes fax ) anonymous; modifier note { bytes32 foo; bytes32 bar; uint256 wad; assembly { foo := calldataload(4) bar := calldataload(36) wad := callvalue } emit LogNote(msg.sig, msg.sender, foo, bar, wad, msg.data); _; } } contract ERC20 { function totalSupply() public view returns (uint supply); function balanceOf( address who ) public view returns (uint value); function allowance( address owner, address spender ) public view returns (uint _allowance); function transfer( address to, uint value) public returns (bool ok); function transferFrom( address from, address to, uint value) public returns (bool ok); function approve( address spender, uint value) public returns (bool ok); event Transfer( address indexed from, address indexed to, uint value); event Approval( address indexed owner, address indexed spender, uint value); } contract DSMath { function add(uint x, uint y) internal pure returns (uint z) { require((z = x + y) >= x, "ds-math-add-overflow"); } function sub(uint x, uint y) internal pure returns (uint z) { require((z = x - y) <= x, "ds-math-sub-underflow"); } function mul(uint x, uint y) internal pure returns (uint z) { require(y == 0 || (z = x * y) / y == x, "ds-math-mul-overflow"); } function min(uint x, uint y) internal pure returns (uint z) { return x <= y ? x : y; } function max(uint x, uint y) internal pure returns (uint z) { return x >= y ? x : y; } function imin(int x, int y) internal pure returns (int z) { return x <= y ? x : y; } function imax(int x, int y) internal pure returns (int z) { return x >= y ? x : y; } uint constant WAD = 10 ** 18; uint constant RAY = 10 ** 27; function wmul(uint x, uint y) internal pure returns (uint z) { z = add(mul(x, y), WAD / 2) / WAD; } function rmul(uint x, uint y) internal pure returns (uint z) { z = add(mul(x, y), RAY / 2) / RAY; } function wdiv(uint x, uint y) internal pure returns (uint z) { z = add(mul(x, WAD), y / 2) / y; } function rdiv(uint x, uint y) internal pure returns (uint z) { z = add(mul(x, RAY), y / 2) / y; } // This famous algorithm is called "exponentiation by squaring" // and calculates x^n with x as fixed-point and n as regular unsigned. // // It's O(log n), instead of O(n) for naive repeated multiplication. // // These facts are why it works: // // If n is even, then x^n = (x^2)^(n/2). // If n is odd, then x^n = x * x^(n-1), // and applying the equation for even x gives // x^n = x * (x^2)^((n-1) / 2). // // Also, EVM division is flooring and // floor[(n-1) / 2] = floor[n / 2]. // function rpow(uint x, uint n) internal pure returns (uint z) { z = n % 2 != 0 ? x : RAY; for (n /= 2; n != 0; n /= 2) { x = rmul(x, x); if (n % 2 != 0) { z = rmul(z, x); } } } } contract DSStop is DSNote, DSAuth { bool public stopped; modifier stoppable { require(!stopped, "ds-stop-is-stopped"); _; } function stop() public auth note { stopped = true; } function start() public auth note { stopped = false; } } contract Managed { /// @notice The address of the manager is the only address that can call /// a function with this modifier modifier onlyManager { require(msg.sender == manager); _; } address public manager; constructor() public { manager = msg.sender;} /// @notice Changes the manager of the contract /// @param _newManager The new manager of the contract function changeManager(address _newManager) public onlyManager { manager = _newManager; } /// @dev Internal function to determine if an address is a contract /// @param _addr The address being queried /// @return True if `_addr` is a contract function isContract(address _addr) view internal returns(bool) { uint size = 0; assembly { size := extcodesize(_addr) } return size > 0; } } contract ControllerManager is DSAuth { address[] public controllers; function addController(address _ctrl) public auth { require(_ctrl != address(0)); controllers.push(_ctrl); } function removeController(address _ctrl) public auth { for (uint idx = 0; idx < controllers.length; idx++) { if (controllers[idx] == _ctrl) { controllers[idx] = controllers[controllers.length - 1]; controllers.length -= 1; return; } } } // Return the adjusted transfer amount after being filtered by all token controllers. function onTransfer(address _from, uint _fromBalance, uint _amount) public returns(uint) { uint adjustedAmount = _amount; for (uint i = 0; i < controllers.length; i++) { adjustedAmount = TokenController(controllers[i]).onTokenTransfer(_from, _fromBalance, adjustedAmount); require(adjustedAmount <= _amount, "TokenController-isnot-allowed-to-lift-transfer-amount"); if (adjustedAmount == 0) return 0; } return adjustedAmount; } } contract DOSToken is ERC20, DSMath, DSStop, Managed { string public constant name = 'DOS Network Token'; string public constant symbol = 'DOS'; uint256 public constant decimals = 18; uint256 private constant MAX_SUPPLY = 1e9 * 1e18; // 1 billion total supply uint256 private _supply = MAX_SUPPLY; mapping (address => uint256) _balances; mapping (address => mapping (address => uint256)) _approvals; constructor() public { _balances[msg.sender] = _supply; emit Transfer(address(0), msg.sender, _supply); } function totalSupply() public view returns (uint) { return _supply; } function balanceOf(address src) public view returns (uint) { return _balances[src]; } function allowance(address src, address guy) public view returns (uint) { return _approvals[src][guy]; } function transfer(address dst, uint wad) public returns (bool) { return transferFrom(msg.sender, dst, wad); } function transferFrom(address src, address dst, uint wad) public stoppable returns (bool) { require(_balances[src] >= wad, "token-insufficient-balance"); // Adjust token transfer amount if necessary. if (isContract(manager)) { wad = ControllerManager(manager).onTransfer(src, _balances[src], wad); require(wad > 0, "transfer-disabled-by-ControllerManager"); } if (src != msg.sender && _approvals[src][msg.sender] != uint(-1)) { require(_approvals[src][msg.sender] >= wad, "token-insufficient-approval"); _approvals[src][msg.sender] = sub(_approvals[src][msg.sender], wad); } _balances[src] = sub(_balances[src], wad); _balances[dst] = add(_balances[dst], wad); emit Transfer(src, dst, wad); return true; } function approve(address guy) public stoppable returns (bool) { return approve(guy, uint(-1)); } function approve(address guy, uint wad) public stoppable returns (bool) { // To change the approve amount you first have to reduce the addresses` // allowance to zero by calling `approve(_guy, 0)` if it is not // already 0 to mitigate the race condition described here: // https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 require((wad == 0) || (_approvals[msg.sender][guy] == 0)); _approvals[msg.sender][guy] = wad; emit Approval(msg.sender, guy, wad); return true; } function burn(uint wad) public { burn(msg.sender, wad); } function mint(address guy, uint wad) public auth stoppable { _balances[guy] = add(_balances[guy], wad); _supply = add(_supply, wad); require(_supply <= MAX_SUPPLY, "Total supply overflow"); emit Transfer(address(0), guy, wad); } function burn(address guy, uint wad) public auth stoppable { if (guy != msg.sender && _approvals[guy][msg.sender] != uint(-1)) { require(_approvals[guy][msg.sender] >= wad, "token-insufficient-approval"); _approvals[guy][msg.sender] = sub(_approvals[guy][msg.sender], wad); } require(_balances[guy] >= wad, "token-insufficient-balance"); _balances[guy] = sub(_balances[guy], wad); _supply = sub(_supply, wad); emit Transfer(guy, address(0), wad); } /// @notice Ether sent to this contract won't be returned, thank you. function () external payable {} /// @notice This method can be used by the owner to extract mistakenly /// sent tokens to this contract. /// @param _token The address of the token contract that you want to recover /// set to 0 in case you want to extract ether. function claimTokens(address _token, address payable _dst) public auth { if (_token == address(0)) { _dst.transfer(address(this).balance); return; } ERC20 token = ERC20(_token); uint balance = token.balanceOf(address(this)); token.transfer(_dst, balance); } }