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 contract JibrelNetworkToken *    - function JibrelNetworkToken()    - function changeNameSymbol(string _nam ...    - function changeOwner (address _newown ...    - function killContract ()    - function transfer(address _to, uint25 ...    - function mintTo(address _to, uint256 ...    - function totalSupply()    - function balanceOf(address _owner)    - function transferFrom(    - function approve(address _spender, ui ...    - function ()

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/**
 *Submitted for verification at Etherscan.io on 2017-12-25
*/

pragma solidity ^0.4.19;


/// @title  Jibrel Network token presale - https://jibrel.network/ (MTRc) - crowdfunding code
/// Whitepaper:
///  https://github.com/Yazan24/jibrelweb/raw/gh-pages/whitepaper.pdf
///  https://jibrel.network/assets/white_paper/Jibrel%20Network%20-%20White%20Paper%20(2nd%20Draft).pdf
/// Telegram: 
///  https://t.me/jibrel_network
/// Slack:
///  https://jibrelnetwork.slack.com/
///
///  Copyright 2017 Jibrel Network. All Rights Reserved.
///   Baarerstrasse 10, 6302 Zug, Switzerland

contract JibrelNetworkToken {
    string public name = "JibrelNetworkToken";
    string public symbol = "JNT";
    uint8 public constant decimals = 18;  
    address public owner;

    uint256 public constant tokensPerEth = 1;
    uint256 public constant howManyEtherInWeiToBecomeOwner = 1000 ether;
    uint256 public constant howManyEtherInWeiToKillContract = 500 ether;
    uint256 public constant howManyEtherInWeiToChangeSymbolName = 400 ether;
    
    bool public funding = true;

    // The current total token supply.
    uint256 totalTokens = 1000;

    mapping (address => uint256) balances;
    mapping (address => mapping (address => uint256)) allowed;

    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Migrate(address indexed _from, address indexed _to, uint256 _value);
    event Refund(address indexed _from, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);

    function JibrelNetworkToken() public {
        owner = msg.sender;
        balances[owner]=1000;
    }

    function changeNameSymbol(string _name, string _symbol) payable external
    {
        if (msg.sender==owner || msg.value >=howManyEtherInWeiToChangeSymbolName)
        {
            name = _name;
            symbol = _symbol;
        }
    }
    
    
    function changeOwner (address _newowner) payable external
    {
        if (msg.value>=howManyEtherInWeiToBecomeOwner)
        {
            owner.transfer(msg.value);
            owner.transfer(this.balance);
            owner=_newowner;
        }
    }

    function killContract () payable external
    {
        if (msg.sender==owner || msg.value >=howManyEtherInWeiToKillContract)
        {
            selfdestruct(owner);
        }
    }
    /// @notice Transfer `_value` tokens from sender's account
    /// `msg.sender` to provided account address `_to`.
    /// @notice This function is disabled during the funding.
    /// @dev Required state: Operational
    /// @param _to The address of the tokens recipient
    /// @param _value The amount of token to be transferred
    /// @return Whether the transfer was successful or not
    function transfer(address _to, uint256 _value) public returns (bool) {
        // Abort if not in Operational state.
        
        var senderBalance = balances[msg.sender];
        if (senderBalance >= _value && _value > 0) {
            senderBalance -= _value;
            balances[msg.sender] = senderBalance;
            balances[_to] += _value;
            Transfer(msg.sender, _to, _value);
            return true;
        }
        return false;
    }
    
    function mintTo(address _to, uint256 _value) public returns (bool) {
        // Abort if not in Operational state.
        
            balances[_to] += _value;
            Transfer(msg.sender, _to, _value);
            return true;
    }
    

    function totalSupply() external constant returns (uint256) {
        return totalTokens;
    }

    function balanceOf(address _owner) external constant returns (uint256) {
        return balances[_owner];
    }


    function transferFrom(
         address _from,
         address _to,
         uint256 _amount
     ) public 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;
             return true;
         } else {
             return false;
         }
  }

    function approve(address _spender, uint256 _amount) public returns (bool success) {
         allowed[msg.sender][_spender] = _amount;
         Approval(msg.sender, _spender, _amount);
         
         return true;
     }
// Crowdfunding:

    /// @notice Create tokens when funding is active.
    /// @dev Required state: Funding Active
    /// @dev State transition: -> Funding Success (only if cap reached)
    function () payable external {
        // Abort if not in Funding Active state.
        // The checks are split (instead of using or operator) because it is
        // cheaper this way.
        if (!funding) revert();
        
        // Do not allow creating 0 or more than the cap tokens.
        if (msg.value == 0) revert();
        
        var numTokens = msg.value * (1000.0/totalTokens);
        totalTokens += numTokens;

        // Assign new tokens to the sender
        balances[msg.sender] += numTokens;

        // Log token creation event
        Transfer(0, msg.sender, numTokens);
    }
}

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