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 contract Ownable    - function Ownable()    - function transferOwnership(address ne ...  contract ERC20Basic    - function totalSupply()    - function balanceOf(address who)    - function transfer(address to, uint256 ... library SafeMath    - function mul(uint256 a, uint256 b)    - function div(uint256 a, uint256 b)    - function sub(uint256 a, uint256 b)    - function add(uint256 a, uint256 b)  contract Pausable is Ownable    - function pause()    - function unpause()  contract BasicToken is ERC20Basic    - function totalSupply()    - function transfer(address _to, uint25 ...    - function balanceOf(address _owner)  contract ERC20 is ERC20Basic    - function allowance(address owner, add ...    - function transferFrom(address from, a ...    - function approve(address spender, uin ...  contract StandardToken is ERC20, B ...    - function transferFrom(address _from, ...    - function approve(address _spender, ui ...    - function allowance(address _owner, ad ...    - function increaseApproval(address _sp ...    - function decreaseApproval(address _sp ...  contract MintableToken is Standard ...    - function mint(address _to, uint256 _a ...    - function finishMinting()  contract PausableToken is Standard ...    - function transfer(address _to, uint25 ...    - function transferFrom(address _from, ...    - function approve(address _spender, ui ...    - function increaseApproval(address _sp ...    - function decreaseApproval(address _sp ...  contract OpiriaToken is MintableTo ... *

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/**
 *Submitted for verification at Etherscan.io on 2018-04-19
*/
pragma solidity ^0.4.21;
// ----------------- 
//begin Ownable.sol
/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 */
contract Ownable {
  address public owner;
  event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
  /**
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  function Ownable() public {
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