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Contract Source Code:
File 1 of 1 : DrepToken
pragma solidity ^0.4.18; contract DrepToken { string public name = "DREP"; string public symbol = "DREP"; uint8 public decimals = 18; mapping (address => uint256) public balanceOf; mapping (address => mapping (address => uint256)) public allowance; uint256 public totalSupply; uint256 constant initialSupply = 10000000000; bool public stopped = false; address internal owner = 0x0; modifier ownerOnly { require(owner == msg.sender); _; } modifier isRunning { require(!stopped); _; } modifier validAddress { require(msg.sender != 0x0); _; } function DrepToken() public { owner = msg.sender; totalSupply = initialSupply * 10 ** uint256(decimals); balanceOf[owner] = totalSupply; } function transfer(address _to, uint256 _value) isRunning validAddress public returns (bool success) { require(_to != 0x0); require(balanceOf[msg.sender] >= _value); require(balanceOf[_to] + _value >= balanceOf[_to]); balanceOf[msg.sender] -= _value; balanceOf[_to] += _value; emit Transfer(msg.sender, _to, _value); return true; } function transferFrom(address _from, address _to, uint256 _value) isRunning validAddress public returns (bool success) { require(_to != 0x0); require(balanceOf[_from] >= _value); require(balanceOf[_to] + _value >= balanceOf[_to]); require(allowance[_from][msg.sender] >= _value); allowance[_from][msg.sender] -= _value; balanceOf[_from] -= _value; balanceOf[_to] += _value; emit Transfer(_from, _to, _value); return true; } function approve(address _spender, uint256 _value) isRunning validAddress public returns (bool success) { require(_value == 0 || allowance[msg.sender][_spender] == 0); allowance[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } function stop() ownerOnly public { stopped = true; } function start() ownerOnly public { stopped = false; } function burn(uint256 _value) isRunning validAddress public { require(balanceOf[msg.sender] >= _value); require(totalSupply >= _value); balanceOf[msg.sender] -= _value; totalSupply -= _value; } event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); }
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