EthereumWorks

pragma solidity ^0.4.11;


/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {
  function mul(uint256 a, uint256 b) internal returns (uint256) {
    uint256 c = a * b;

EthereumWorks

pragma solidity ^0.4.2;

// расчеты между контрагентами
contract order {
    
    address buyer;              // покупатер
    address seller;             // продавец
    address deliver;            // страховая компания

    uint itemId;                // код товара

EthereumWorks

pragma solidity ^0.4.11;

// Безопасные расчеты между контрагентами
contract order {
    
    address public buyer;              // покупатер
    address public seller;             // продавец
    address public deliver;            // доставщик

    uint public itemId;                // код товара

EthereumWorks

pragma solidity ^0.4.11;


/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {
  function mul(uint256 a, uint256 b) internal returns (uint256) {
    uint256 c = a * b;

EthereumWorks

var MAINET_RPC_URL = 'https://mainnet.infura.io/metamask' ;
var ROPSTEN_RPC_URL = 'https://ropsten.infura.io/metamask' ;
var KOVAN_RPC_URL = 'https://kovan.infura.io/metamask' ;
var RINKEBY_RPC_URL = 'https://rinkeby.infura.io/metamask' ;

var CURRENT_URL = MAINET_RPC_URL ;

$( document ).ready(function() {
    web3 = new Web3(new Web3.providers.HttpProvider(CURRENT_URL));

EthereumWorks

var MAINET_RPC_URL = 'https://mainnet.infura.io/metamask' ;
var ROPSTEN_RPC_URL = 'https://ropsten.infura.io/metamask' ;
var KOVAN_RPC_URL = 'https://kovan.infura.io/metamask' ;
var RINKEBY_RPC_URL = 'https://rinkeby.infura.io/metamask' ;

var CURRENT_URL = MAINET_RPC_URL ;

$( document ).ready(function() {
    web3 = new Web3(new Web3.providers.HttpProvider(CURRENT_URL));

EthereumWorks

pragma solidity ^0.4.11;

contract owned {
    address public owner;
 
    function owned() public {
        owner = msg.sender;
    }

    modifier onlyOwner {