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Contract Source Code:
File 1 of 1 : EGAS
/** * @First Smart Airdrop eGAS * @http://ethgas.stream * @[email protected] */ pragma solidity ^0.4.16; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { function mul(uint256 a, uint256 b) internal constant returns (uint256) { uint256 c = a * b; assert(a == 0 || c / a == b); return c; } function div(uint256 a, uint256 b) internal constant returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function sub(uint256 a, uint256 b) internal constant returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal constant returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } contract Owned { // The address of the account of the current owner address public owner; // The publiser is the inital owner function Owned() public { owner = msg.sender; } /** * Access is restricted to the current owner */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * Transfer ownership to `_newOwner` * * @param _newOwner The address of the account that will become the new owner */ function transferOwnership(address _newOwner) public onlyOwner { owner = _newOwner; } } contract EGAS is Owned { using SafeMath for uint256; string public symbol = "EGAS"; string public name = "ETHGAS"; uint8 public constant decimals = 8; uint256 _initialSupply = 100000000000000; uint256 _totalSupply = 0; uint256 _maxTotalSupply = 1279200000000000; uint256 _dropReward = 26000000000; //260 eGAS - per entry with 30% bonus to start uint256 _maxDropReward = 1300000000000; //13000 eGAS - per block 10min with 30% bonus to start - 50 entry max uint256 _rewardBonusTimePeriod = 86400; //1 day each bonus stage uint256 _nextRewardBonus = now + _rewardBonusTimePeriod; uint256 _rewardTimePeriod = 600; //10 minutes uint256 _rewardStart = now; uint256 _rewardEnd = now + _rewardTimePeriod; uint256 _currentAirdropped = 0; event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); mapping(address => uint256) balances; mapping(address => mapping (address => uint256)) allowed; function OwnerReward() public { balances[owner] = _initialSupply; transfer(owner, balances[owner]); } function withdraw() public onlyOwner { owner.transfer(this.balance); } function totalSupply() constant returns (uint256) { return _totalSupply + _initialSupply; } function balanceOf(address _owner) constant returns (uint256 balance) { return balances[_owner]; } function transfer(address _to, uint256 _amount) returns (bool success) { if (balances[msg.sender] >= _amount && _amount > 0 && balances[_to] + _amount > balances[_to]) { balances[msg.sender] -= _amount; balances[_to] += _amount; Transfer(msg.sender, _to, _amount); return true; } else { return false; } } function transferFrom( address _from, address _to, uint256 _amount ) returns (bool success) { if (balances[_from] >= _amount && allowed[_from][msg.sender] >= _amount && _amount > 0 && balances[_to] + _amount > balances[_to]) { balances[_from] -= _amount; allowed[_from][msg.sender] -= _amount; balances[_to] += _amount; Transfer(_from, _to, _amount); return true; } else { return false; } } function approve(address _spender, uint256 _amount) returns (bool success) { allowed[msg.sender][_spender] = _amount; Approval(msg.sender, _spender, _amount); return true; } function allowance(address _owner, address _spender) constant returns (uint256 remaining) { return allowed[_owner][_spender]; } function SmartAirdrop() payable returns (bool success) { if (now < _rewardEnd && _currentAirdropped >= _maxDropReward) revert(); else if (now >= _rewardEnd) { _rewardStart = now; _rewardEnd = now + _rewardTimePeriod; _currentAirdropped = 0; } if (now >= _nextRewardBonus) { _nextRewardBonus = now + _rewardBonusTimePeriod; _dropReward = _dropReward - 1000000000; _maxDropReward = _maxDropReward - 50000000000; _currentAirdropped = 0; _rewardStart = now; _rewardEnd = now + _rewardTimePeriod; } if ((_currentAirdropped < _maxDropReward) && (_totalSupply < _maxTotalSupply)) { balances[msg.sender] += _dropReward; _currentAirdropped += _dropReward; _totalSupply += _dropReward; Transfer(this, msg.sender, _dropReward); return true; } return false; } function MaxTotalSupply() constant returns(uint256) { return _maxTotalSupply; } function DropReward() constant returns(uint256) { return _dropReward; } function MaxDropReward() constant returns(uint256) { return _maxDropReward; } function RewardBonusTimePeriod() constant returns(uint256) { return _rewardBonusTimePeriod; } function NextRewardBonus() constant returns(uint256) { return _nextRewardBonus; } function RewardTimePeriod() constant returns(uint256) { return _rewardTimePeriod; } function RewardStart() constant returns(uint256) { return _rewardStart; } function RewardEnd() constant returns(uint256) { return _rewardEnd; } function CurrentAirdropped() constant returns(uint256) { return _currentAirdropped; } function TimeNow() constant returns(uint256) { return now; } }
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