/** * Source Code first verified at https://etherscan.io on Saturday, May 4, 2019 (UTC) */ pragma solidity ^0.4.19; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. */ function div(uint256 a, uint256 b) internal pure 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 a / b; } /** * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } contract Owned { address private Owner; function Owned() public{ Owner = msg.sender; } function IsOwner(address addr) view public returns(bool) { return Owner == addr; } function TransferOwner(address newOwner) public onlyOwner { Owner = newOwner; } function Terminate() public onlyOwner { selfdestruct(Owner); } modifier onlyOwner(){ require(msg.sender == Owner); _; } } contract EB is Owned { using SafeMath for uint256; string public constant name = "e-balance coin (EBCoin)"; string public constant symbol = "EB"; uint256 public constant decimals = 18; // 18 is the most common number of decimal places bool private tradeable; uint256 private currentSupply; mapping(address => uint256) private balances; mapping(address => mapping(address=> uint256)) private allowed; mapping(address => bool) private lockedAccounts; /* Incoming Ether */ event ReceivedEth(address indexed _from, uint256 _value); //this is the fallback function () payable public { emit ReceivedEth(msg.sender, msg.value); } event TransferredEth(address indexed _to, uint256 _value); function FoundationTransfer(address _to, uint256 amtEth, uint256 amtToken) public onlyOwner { require(address(this).balance >= amtEth && balances[this] >= amtToken ); if(amtEth >0) { _to.transfer(amtEth); emit TransferredEth(_to, amtEth); } if(amtToken > 0) { require(balances[_to] + amtToken > balances[_to]); balances[this] -= amtToken; balances[_to] += amtToken; emit Transfer(this, _to, amtToken); } } /* End Incoming Ether */ function EB( ) public { uint256 initialTotalSupply = 40000000; balances[this] = initialTotalSupply * (10**decimals); currentSupply = initialTotalSupply * (10**decimals); emit Transfer(address(0), this, currentSupply); } uint256 constant startTime = 1556928000; // Date.UTC(20198, 5, 4) as seconds uint256 constant startAmt = 95000000; uint256 _lastDayPaid = 0; uint256 _currentMonth = 0; uint256 factor = 10000000; event DayMinted(uint256 day,uint256 val, uint256 now); function DailyMint() public { uint256 day = (now-startTime)/(60*60*24); require(startTime <= now); require(day >= _lastDayPaid); uint256 month = _lastDayPaid/30; if(month > _currentMonth){ _currentMonth += 1; factor = (factor * 99)/100; } uint256 todaysPayout = (((factor * startAmt )/10000000)/30)* (10**decimals); balances[this] +=todaysPayout; currentSupply += todaysPayout; emit Transfer(address(0), this, todaysPayout); emit DayMinted(_lastDayPaid, todaysPayout, now); _lastDayPaid+=1; } function lastDayPaid() public view returns(uint256){ return _lastDayPaid; } function MintToken(uint256 amt) public onlyOwner { currentSupply += amt; balances[this] += amt; emit Transfer(address(0), this, amt); } function DestroyToken(uint256 amt) public onlyOwner { require ( balances[this] >= amt); currentSupply -= amt; balances[this] -= amt; emit Transfer(this,address(0), amt); } event SoldToken(address _buyer, uint256 _value, string note); function BuyToken(address _buyer, uint256 _value, string note) public onlyOwner { require(balances[this] >= _value && balances[_buyer] + _value > balances[_buyer]); emit SoldToken( _buyer, _value, note); balances[this] -= _value; balances[_buyer] += _value; emit Transfer(this, _buyer, _value); } function LockAccount(address toLock) public onlyOwner { lockedAccounts[toLock] = true; } function UnlockAccount(address toUnlock) public onlyOwner { delete lockedAccounts[toUnlock]; } function SetTradeable(bool t) public onlyOwner { tradeable = t; } function IsTradeable() public view returns(bool) { return tradeable; } function totalSupply() constant public returns (uint256) { return currentSupply; } function balanceOf(address _owner) constant public returns (uint256 balance) { return balances[_owner]; } function transfer(address _to, uint256 _value) public notLocked returns (bool success) { require(tradeable); if (balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]) { emit Transfer( msg.sender, _to, _value); balances[msg.sender] -= _value; balances[_to] += _value; return true; } else { return false; } } function transferFrom(address _from, address _to, uint _value)public notLocked returns (bool success) { require(!lockedAccounts[_from] && !lockedAccounts[_to]); require(tradeable); if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]) { emit Transfer( _from, _to, _value); balances[_from] -= _value; allowed[_from][msg.sender] -= _value; balances[_to] += _value; return true; } else { return false; } } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * * 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 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /** * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. */ function allowance(address _owner, address _spender) public view returns (uint256) { return allowed[_owner][_spender]; } /** * @dev Increase the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. */ function increaseApproval(address _spender, uint _addedValue) public returns (bool) { allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /** * @dev Decrease the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. */ function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } event Transfer(address indexed _from, address indexed _to, uint _value); event Approval(address indexed _owner, address indexed _spender, uint _value); modifier notLocked(){ require (!lockedAccounts[msg.sender]); _; } }