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/**
 *Submitted for verification at Etherscan.io on 2018-01-30
*/

pragma solidity 0.4.19;
/**
* @title Cacao Shares TOKEN
* @dev ERC-20 Token Standard Compliant
* @notice Contact [email protected]
* @author Fares A. Akel C.
* ================================================
* CACAO SHARES IS A DIGITAL ASSET
* THAT ENABLES ANYONE TO OWN CACAO TREES
* OF THE CRIOLLO TYPE IN SUR DEL LAGO, VENEZUELA
* ================================================
*/

/**
 * @title SafeMath by OpenZeppelin (partially)
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        assert(b <= a);
        return a - b;
    }

    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        assert(c >= a);
        return c;
    }

}
/**
 * Token contract interface for external use
 */
contract ERC20TokenInterface {

    function balanceOf(address _owner) public constant returns (uint256 value);
    function transfer(address _to, uint256 _value) public returns (bool success);
    function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
    function approve(address _spender, uint256 _value) public returns (bool success);
    function allowance(address _owner, address _spender) public constant returns (uint256 remaining);

    }


/**
* @title Admin parameters
* @dev Define administration parameters for this contract
*/
contract admined { //This token contract is administered
    address public admin; //Admin address is public
    bool public lockTransfer; //Transfer Lock flag
    address public allowedAddress; //an address that can override lock condition

    /**
    * @dev Contract constructor
    * define initial administrator
    */
    function admined() internal {
        admin = msg.sender; //Set initial admin to contract creator
        allowedAddress = msg.sender; //Set initial allowed to contract creator
        Admined(admin);
        AllowedSet(allowedAddress);
    }

    modifier onlyAdmin() { //A modifier to define admin-only functions
        require(msg.sender == admin);
        _;
    }

    modifier transferLock() { //A modifier to lock transactions
        require(lockTransfer == false || allowedAddress == msg.sender);
        _;
    }

   /**
    * @dev Function to set an allowed address
    * @param _to The address to give privileges.
    */
    function setAllowedAddress(address _to) onlyAdmin public {
        allowedAddress = _to;
        AllowedSet(_to);
    }

   /**
    * @dev Function to set new admin address
    * @param _newAdmin The address to transfer administration to
    */
    function transferAdminship(address _newAdmin) onlyAdmin public { //Admin can be transfered
        require(_newAdmin != address(0)); //Prevent zero address transactions
        admin = _newAdmin;
        TransferAdminship(admin);
    }

   /**
    * @dev Function to unlock transfers
    * @notice It's only possible to unlock the transfers
    */
    function setTransferLockFree() onlyAdmin public {
        require(lockTransfer == true);// only if it's locked
        lockTransfer = false;
        SetTransferLock(lockTransfer);
    }

    //All admin actions have a log for public review
    event AllowedSet(address _to);
    event SetTransferLock(bool _set);
    event TransferAdminship(address newAdminister);
    event Admined(address administer);

}

/**
* @title Token definition
* @dev Define token parameters including ERC20 ones
*/
contract ERC20Token is ERC20TokenInterface, admined { //Standard definition of a ERC20Token
    using SafeMath for uint256;
    uint256 public totalSupply;
    mapping (address => uint256) balances; //A mapping of all balances per address
    mapping (address => mapping (address => uint256)) allowed; //A mapping of all allowances

    /**
    * @dev Get the balance of an specified address.
    * @param _owner The address to be query.
    */
    function balanceOf(address _owner) public constant returns (uint256 value) {
      return balances[_owner];
    }

    /**
    * @dev transfer token to a specified address
    * @param _to The address to transfer to.
    * @param _value The amount to be transferred.
    */
    function transfer(address _to, uint256 _value) transferLock public returns (bool success) {
        require(_to != address(0)); //Prevent zero address transactions
        balances[msg.sender] = balances[msg.sender].sub(_value);
        balances[_to] = balances[_to].add(_value);
        Transfer(msg.sender, _to, _value);
        return true;
    }

    /**
    * @dev transfer token from an address to another specified address using allowance
    * @param _from The address where token comes.
    * @param _to The address to transfer to.
    * @param _value The amount to be transferred.
    */
    function transferFrom(address _from, address _to, uint256 _value) transferLock public returns (bool success) {
        require(_to != address(0)); //Prevent zero address transactions
        balances[_from] = balances[_from].sub(_value);
        allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
        balances[_to] = balances[_to].add(_value);
        Transfer(_from, _to, _value);
        return true;
    }

    /**
    * @dev Assign allowance to an specified address to use the owner balance
    * @param _spender The address to be allowed to spend.
    * @param _value The amount to be allowed.
    */
    function approve(address _spender, uint256 _value) public returns (bool success) {
        require(_value == 0 || allowed[msg.sender][_spender] == 0); //Mitigation to possible attack on approve and transferFrom functions
        allowed[msg.sender][_spender] = _value;
        Approval(msg.sender, _spender, _value);
        return true;
    }

    /**
    * @dev Get the allowance of an specified address to use another address balance.
    * @param _owner The address of the owner of the tokens.
    * @param _spender The address of the allowed spender.
    */
    function allowance(address _owner, address _spender) public constant returns (uint256 remaining) {
        return allowed[_owner][_spender];
    }

    /**
    * @dev Log Events
    */
    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}

/**
* @title AssetCCS
* @dev Initial CCS supply creation
*/
contract AssetCCS is ERC20Token {
    
    string public name = 'Cacao Shares';
    uint8 public decimals = 18;
    string public symbol = 'CCS';
    string public version = '1';

    function AssetCCS() public {
        
        totalSupply = 100000000 * (10**uint256(decimals)); //100 million total token creation
        balances[msg.sender] = totalSupply;

        /**
        * This token is locked for transfers until the 90th day after ICO ending,
        * the measure is globally applied, the only address able to transfer is the single
        * allowed address. During ICO period, allowed address will be ICO address.
        */
        lockTransfer = true;
        SetTransferLock(lockTransfer);

        Transfer(0, this, totalSupply);
        Transfer(this, msg.sender, balances[msg.sender]);
    
    }
    
    /**
    *@dev Function to handle callback calls
    */
    function() public {
        revert();
    }
}

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