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0xf805242f4c5F9EBBfAc35bAB9e4404Ff41Edae21

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0x70816DC1...B5FC6c9aE at txn 0x743827e9bad890e0b36d73132d40661fb1ef6d8643bc159e3c7aeca9a4d70334

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	Transaction Hash	Method	Block		From		To
There are no matching entries 1 Internal Transaction and 2 Token Transfers found.

Latest 1 internal transaction

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Parent Transaction Hash	Block		From		To
0x743827e9bad890e0b36d73132d40661fb1ef6d8643bc159e3c7aeca9a4d70334	5825305	2018-06-20 23:50:39	2429 days ago	1529538639	0x44CFBcb1...38d78ad6B		Contract Creation	0 ETH$0.00

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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0xA17b54C6...68f297CC8
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:

RobotLiability

Compiler Version

v0.4.24+commit.e67f0147

Optimization Enabled:

Yes with 200 runs

Other Settings:

default evmVersion

Contract Source Code (Solidity)

IDE

/**
 *Submitted for verification at Etherscan.io on 2018-06-14
*/

pragma solidity ^0.4.24;

/**
 * @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 {
    owner = msg.sender;
  }

  /**
   * @dev Throws if called by any account other than the owner.
   */
  modifier onlyOwner() {
    require(msg.sender == owner);
    _;
  }

  /**
   * @dev Allows the current owner to transfer control of the contract to a newOwner.
   * @param newOwner The address to transfer ownership to.
   */
  function transferOwnership(address newOwner) public onlyOwner {
    require(newOwner != address(0));
    emit OwnershipTransferred(owner, newOwner);
    owner = newOwner;
  }

}

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {

  /**
  * @dev Multiplies two numbers, throws on overflow.
  */
  function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
    if (a == 0) {
      return 0;
    }
    c = a * b;
    assert(c / a == b);
    return c;
  }

  /**
  * @dev Integer division of two numbers, truncating the quotient.
  */
  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    // assert(b > 0); // Solidity automatically throws when dividing by 0
    // uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    return a / b;
  }

  /**
  * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
  */
  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    assert(b <= a);
    return a - b;
  }

  /**
  * @dev Adds two numbers, throws on overflow.
  */
  function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
    c = a + b;
    assert(c >= a);
    return c;
  }
}

/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/179
 */
contract ERC20Basic {
  function totalSupply() public view returns (uint256);
  function balanceOf(address who) public view returns (uint256);
  function transfer(address to, uint256 value) public returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
}

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 is ERC20Basic {
  function allowance(address owner, address spender) public view returns (uint256);
  function transferFrom(address from, address to, uint256 value) public returns (bool);
  function approve(address spender, uint256 value) public returns (bool);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances.
 */
contract BasicToken is ERC20Basic {
  using SafeMath for uint256;

  mapping(address => uint256) balances;

  uint256 totalSupply_;

  /**
  * @dev total number of tokens in existence
  */
  function totalSupply() public view returns (uint256) {
    return totalSupply_;
  }

  /**
  * @dev transfer token for a specified address
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint256 _value) public returns (bool) {
    require(_to != address(0));
    require(_value <= balances[msg.sender]);

    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    emit Transfer(msg.sender, _to, _value);
    return true;
  }

  /**
  * @dev Gets the balance of the specified address.
  * @param _owner The address to query the the balance of.
  * @return An uint256 representing the amount owned by the passed address.
  */
  function balanceOf(address _owner) public view returns (uint256) {
    return balances[_owner];
  }

}

/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * @dev https://github.com/ethereum/EIPs/issues/20
 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 */
contract StandardToken is ERC20, BasicToken {

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


  /**
   * @dev Transfer tokens from one address to another
   * @param _from address The address which you want to send tokens from
   * @param _to address The address which you want to transfer to
   * @param _value uint256 the amount of tokens to be transferred
   */
  function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
    require(_to != address(0));
    require(_value <= balances[_from]);
    require(_value <= allowed[_from][msg.sender]);

    balances[_from] = balances[_from].sub(_value);
    balances[_to] = balances[_to].add(_value);
    allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
    emit Transfer(_from, _to, _value);
    return true;
  }

  /**
   * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
   *
   * Beware that changing an allowance with this method brings the risk that someone may use both the old
   * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
   * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
   * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
   * @param _spender The address which will spend the funds.
   * @param _value The amount of tokens to be spent.
   */
  function approve(address _spender, uint256 _value) public returns (bool) {
    allowed[msg.sender][_spender] = _value;
    emit Approval(msg.sender, _spender, _value);
    return true;
  }

  /**
   * @dev Function to check the amount of tokens that an owner allowed to a spender.
   * @param _owner address The address which owns the funds.
   * @param _spender address The address which will spend the funds.
   * @return A uint256 specifying the amount of tokens still available for the spender.
   */
  function allowance(address _owner, address _spender) public view returns (uint256) {
    return allowed[_owner][_spender];
  }

  /**
   * @dev Increase the amount of tokens that an owner allowed to a spender.
   *
   * approve should be called when allowed[_spender] == 0. To increment
   * allowed value is better to use this function to avoid 2 calls (and wait until
   * the first transaction is mined)
   * From MonolithDAO Token.sol
   * @param _spender The address which will spend the funds.
   * @param _addedValue The amount of tokens to increase the allowance by.
   */
  function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
    allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
    emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

  /**
   * @dev Decrease the amount of tokens that an owner allowed to a spender.
   *
   * approve should be called when allowed[_spender] == 0. To decrement
   * allowed value is better to use this function to avoid 2 calls (and wait until
   * the first transaction is mined)
   * From MonolithDAO Token.sol
   * @param _spender The address which will spend the funds.
   * @param _subtractedValue The amount of tokens to decrease the allowance by.
   */
  function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
    uint oldValue = allowed[msg.sender][_spender];
    if (_subtractedValue > oldValue) {
      allowed[msg.sender][_spender] = 0;
    } else {
      allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
    }
    emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

}

/**
 * @title Mintable token
 * @dev Simple ERC20 Token example, with mintable token creation
 * @dev Issue: * https://github.com/OpenZeppelin/openzeppelin-solidity/issues/120
 * Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
 */
contract MintableToken is StandardToken, Ownable {
  event Mint(address indexed to, uint256 amount);
  event MintFinished();

  bool public mintingFinished = false;


  modifier canMint() {
    require(!mintingFinished);
    _;
  }

  /**
   * @dev Function to mint tokens
   * @param _to The address that will receive the minted tokens.
   * @param _amount The amount of tokens to mint.
   * @return A boolean that indicates if the operation was successful.
   */
  function mint(address _to, uint256 _amount) onlyOwner canMint public returns (bool) {
    totalSupply_ = totalSupply_.add(_amount);
    balances[_to] = balances[_to].add(_amount);
    emit Mint(_to, _amount);
    emit Transfer(address(0), _to, _amount);
    return true;
  }

  /**
   * @dev Function to stop minting new tokens.
   * @return True if the operation was successful.
   */
  function finishMinting() onlyOwner canMint public returns (bool) {
    mintingFinished = true;
    emit MintFinished();
    return true;
  }
}

/**
 * @title Burnable Token
 * @dev Token that can be irreversibly burned (destroyed).
 */
contract BurnableToken is BasicToken {

  event Burn(address indexed burner, uint256 value);

  /**
   * @dev Burns a specific amount of tokens.
   * @param _value The amount of token to be burned.
   */
  function burn(uint256 _value) public {
    _burn(msg.sender, _value);
  }

  function _burn(address _who, uint256 _value) internal {
    require(_value <= balances[_who]);
    // no need to require value <= totalSupply, since that would imply the
    // sender's balance is greater than the totalSupply, which *should* be an assertion failure

    balances[_who] = balances[_who].sub(_value);
    totalSupply_ = totalSupply_.sub(_value);
    emit Burn(_who, _value);
    emit Transfer(_who, address(0), _value);
  }
}

contract XRT is MintableToken, BurnableToken {
    string public constant name     = "Robonomics Alpha";
    string public constant symbol   = "XRT";
    uint   public constant decimals = 9;

    uint256 public constant INITIAL_SUPPLY = 5 * (10 ** uint256(decimals));

    constructor() public {
        totalSupply_ = INITIAL_SUPPLY;
        balances[msg.sender] = INITIAL_SUPPLY;
        emit Transfer(0x0, msg.sender, INITIAL_SUPPLY);
    }
}

contract LightContract {
    /**
     * @dev Shared code smart contract 
     */
    address lib;

    constructor(address _library) public {
        lib = _library;
    }

    function() public {
        require(lib.delegatecall(msg.data));
    }
}

contract LighthouseAPI {
    address[] public members;
    mapping(address => uint256) indexOf;

    mapping(address => uint256) public balances;

    uint256 public minimalFreeze;
    uint256 public timeoutBlocks;

    LiabilityFactory public factory;
    XRT              public xrt;

    uint256 public keepaliveBlock = 0;
    uint256 public marker = 0;
    uint256 public quota = 0;

    function quotaOf(address _member) public view returns (uint256)
    { return balances[_member] / minimalFreeze; }
}

contract Lighthouse is LighthouseAPI, LightContract {
    constructor(
        address _lib,
        uint256 _minimalFreeze,
        uint256 _timeoutBlocks
    ) 
        public
        LightContract(_lib)
    {
        minimalFreeze = _minimalFreeze;
        timeoutBlocks = _timeoutBlocks;
        factory = LiabilityFactory(msg.sender);
        xrt = factory.xrt();
    }
}

contract RobotLiabilityAPI {
    bytes   public model;
    bytes   public objective;
    bytes   public result;

    XRT        public xrt;
    ERC20   public token;

    uint256 public cost;
    uint256 public lighthouseFee;
    uint256 public validatorFee;

    bytes32 public askHash;
    bytes32 public bidHash;

    address public promisor;
    address public promisee;
    address public validator;

    bool    public isConfirmed;
    bool    public isFinalized;

    LiabilityFactory public factory;
}

contract RobotLiability is RobotLiabilityAPI, LightContract {
    constructor(address _lib) public LightContract(_lib)
    { factory = LiabilityFactory(msg.sender); }
}

interface ENS {

    // Logged when the owner of a node assigns a new owner to a subnode.
    event NewOwner(bytes32 indexed node, bytes32 indexed label, address owner);

    // Logged when the owner of a node transfers ownership to a new account.
    event Transfer(bytes32 indexed node, address owner);

    // Logged when the resolver for a node changes.
    event NewResolver(bytes32 indexed node, address resolver);

    // Logged when the TTL of a node changes
    event NewTTL(bytes32 indexed node, uint64 ttl);


    function setSubnodeOwner(bytes32 node, bytes32 label, address owner) public;
    function setResolver(bytes32 node, address resolver) public;
    function setOwner(bytes32 node, address owner) public;
    function setTTL(bytes32 node, uint64 ttl) public;
    function owner(bytes32 node) public view returns (address);
    function resolver(bytes32 node) public view returns (address);
    function ttl(bytes32 node) public view returns (uint64);

}

/**
 * A simple resolver anyone can use; only allows the owner of a node to set its
 * address.
 */
contract PublicResolver {

    bytes4 constant INTERFACE_META_ID = 0x01ffc9a7;
    bytes4 constant ADDR_INTERFACE_ID = 0x3b3b57de;
    bytes4 constant CONTENT_INTERFACE_ID = 0xd8389dc5;
    bytes4 constant NAME_INTERFACE_ID = 0x691f3431;
    bytes4 constant ABI_INTERFACE_ID = 0x2203ab56;
    bytes4 constant PUBKEY_INTERFACE_ID = 0xc8690233;
    bytes4 constant TEXT_INTERFACE_ID = 0x59d1d43c;
    bytes4 constant MULTIHASH_INTERFACE_ID = 0xe89401a1;

    event AddrChanged(bytes32 indexed node, address a);
    event ContentChanged(bytes32 indexed node, bytes32 hash);
    event NameChanged(bytes32 indexed node, string name);
    event ABIChanged(bytes32 indexed node, uint256 indexed contentType);
    event PubkeyChanged(bytes32 indexed node, bytes32 x, bytes32 y);
    event TextChanged(bytes32 indexed node, string indexedKey, string key);
    event MultihashChanged(bytes32 indexed node, bytes hash);

    struct PublicKey {
        bytes32 x;
        bytes32 y;
    }

    struct Record {
        address addr;
        bytes32 content;
        string name;
        PublicKey pubkey;
        mapping(string=>string) text;
        mapping(uint256=>bytes) abis;
        bytes multihash;
    }

    ENS ens;

    mapping (bytes32 => Record) records;

    modifier only_owner(bytes32 node) {
        require(ens.owner(node) == msg.sender);
        _;
    }

    /**
     * Constructor.
     * @param ensAddr The ENS registrar contract.
     */
    function PublicResolver(ENS ensAddr) public {
        ens = ensAddr;
    }

    /**
     * Sets the address associated with an ENS node.
     * May only be called by the owner of that node in the ENS registry.
     * @param node The node to update.
     * @param addr The address to set.
     */
    function setAddr(bytes32 node, address addr) public only_owner(node) {
        records[node].addr = addr;
        AddrChanged(node, addr);
    }

    /**
     * Sets the content hash associated with an ENS node.
     * May only be called by the owner of that node in the ENS registry.
     * Note that this resource type is not standardized, and will likely change
     * in future to a resource type based on multihash.
     * @param node The node to update.
     * @param hash The content hash to set
     */
    function setContent(bytes32 node, bytes32 hash) public only_owner(node) {
        records[node].content = hash;
        ContentChanged(node, hash);
    }

    /**
     * Sets the multihash associated with an ENS node.
     * May only be called by the owner of that node in the ENS registry.
     * @param node The node to update.
     * @param hash The multihash to set
     */
    function setMultihash(bytes32 node, bytes hash) public only_owner(node) {
        records[node].multihash = hash;
        MultihashChanged(node, hash);
    }
    
    /**
     * Sets the name associated with an ENS node, for reverse records.
     * May only be called by the owner of that node in the ENS registry.
     * @param node The node to update.
     * @param name The name to set.
     */
    function setName(bytes32 node, string name) public only_owner(node) {
        records[node].name = name;
        NameChanged(node, name);
    }

    /**
     * Sets the ABI associated with an ENS node.
     * Nodes may have one ABI of each content type. To remove an ABI, set it to
     * the empty string.
     * @param node The node to update.
     * @param contentType The content type of the ABI
     * @param data The ABI data.
     */
    function setABI(bytes32 node, uint256 contentType, bytes data) public only_owner(node) {
        // Content types must be powers of 2
        require(((contentType - 1) & contentType) == 0);
        
        records[node].abis[contentType] = data;
        ABIChanged(node, contentType);
    }
    
    /**
     * Sets the SECP256k1 public key associated with an ENS node.
     * @param node The ENS node to query
     * @param x the X coordinate of the curve point for the public key.
     * @param y the Y coordinate of the curve point for the public key.
     */
    function setPubkey(bytes32 node, bytes32 x, bytes32 y) public only_owner(node) {
        records[node].pubkey = PublicKey(x, y);
        PubkeyChanged(node, x, y);
    }

    /**
     * Sets the text data associated with an ENS node and key.
     * May only be called by the owner of that node in the ENS registry.
     * @param node The node to update.
     * @param key The key to set.
     * @param value The text data value to set.
     */
    function setText(bytes32 node, string key, string value) public only_owner(node) {
        records[node].text[key] = value;
        TextChanged(node, key, key);
    }

    /**
     * Returns the text data associated with an ENS node and key.
     * @param node The ENS node to query.
     * @param key The text data key to query.
     * @return The associated text data.
     */
    function text(bytes32 node, string key) public view returns (string) {
        return records[node].text[key];
    }

    /**
     * Returns the SECP256k1 public key associated with an ENS node.
     * Defined in EIP 619.
     * @param node The ENS node to query
     * @return x, y the X and Y coordinates of the curve point for the public key.
     */
    function pubkey(bytes32 node) public view returns (bytes32 x, bytes32 y) {
        return (records[node].pubkey.x, records[node].pubkey.y);
    }

    /**
     * Returns the ABI associated with an ENS node.
     * Defined in EIP205.
     * @param node The ENS node to query
     * @param contentTypes A bitwise OR of the ABI formats accepted by the caller.
     * @return contentType The content type of the return value
     * @return data The ABI data
     */
    function ABI(bytes32 node, uint256 contentTypes) public view returns (uint256 contentType, bytes data) {
        Record storage record = records[node];
        for (contentType = 1; contentType <= contentTypes; contentType <<= 1) {
            if ((contentType & contentTypes) != 0 && record.abis[contentType].length > 0) {
                data = record.abis[contentType];
                return;
            }
        }
        contentType = 0;
    }

    /**
     * Returns the name associated with an ENS node, for reverse records.
     * Defined in EIP181.
     * @param node The ENS node to query.
     * @return The associated name.
     */
    function name(bytes32 node) public view returns (string) {
        return records[node].name;
    }

    /**
     * Returns the content hash associated with an ENS node.
     * Note that this resource type is not standardized, and will likely change
     * in future to a resource type based on multihash.
     * @param node The ENS node to query.
     * @return The associated content hash.
     */
    function content(bytes32 node) public view returns (bytes32) {
        return records[node].content;
    }

    /**
     * Returns the multihash associated with an ENS node.
     * @param node The ENS node to query.
     * @return The associated multihash.
     */
    function multihash(bytes32 node) public view returns (bytes) {
        return records[node].multihash;
    }

    /**
     * Returns the address associated with an ENS node.
     * @param node The ENS node to query.
     * @return The associated address.
     */
    function addr(bytes32 node) public view returns (address) {
        return records[node].addr;
    }

    /**
     * Returns true if the resolver implements the interface specified by the provided hash.
     * @param interfaceID The ID of the interface to check for.
     * @return True if the contract implements the requested interface.
     */
    function supportsInterface(bytes4 interfaceID) public pure returns (bool) {
        return interfaceID == ADDR_INTERFACE_ID ||
        interfaceID == CONTENT_INTERFACE_ID ||
        interfaceID == NAME_INTERFACE_ID ||
        interfaceID == ABI_INTERFACE_ID ||
        interfaceID == PUBKEY_INTERFACE_ID ||
        interfaceID == TEXT_INTERFACE_ID ||
        interfaceID == MULTIHASH_INTERFACE_ID ||
        interfaceID == INTERFACE_META_ID;
    }
}

contract LiabilityFactory {
    constructor(
        address _robot_liability_lib,
        address _lighthouse_lib,
        XRT _xrt
    ) public {
        robotLiabilityLib = _robot_liability_lib;
        lighthouseLib = _lighthouse_lib;
        xrt = _xrt;
    }

    /**
     * @dev New liability created 
     */
    event NewLiability(address indexed liability);

    /**
     * @dev New lighthouse created
     */
    event NewLighthouse(address indexed lighthouse, string name);

    /**
     * @dev Robonomics network protocol token
     */
    XRT public xrt;

    /**
     * @dev Ethereum name system
     */
    ENS public ens;

    /**
     * @dev Robonomics ENS resolver
     */
    PublicResolver public resolver;

    bytes32 constant lighthouseNode
        // lighthouse.0.robonomics.eth
        = 0x1e42a8e8e1e8cf36e83d096dcc74af801d0a194a14b897f9c8dfd403b4eebeda;

    /**
     *  @dev Set ENS registry contract address
     */
    function setENS(ENS _ens) public {
      require(address(ens) == 0);
      ens = _ens;
      resolver = PublicResolver(ens.resolver(lighthouseNode));
    }

    /**
     * @dev Total GAS utilized by Robonomics network
     */
    uint256 public totalGasUtilizing = 0;

    /**
     * @dev GAS utilized by liability contracts
     */
    mapping(address => uint256) public gasUtilizing;


    /**
     * @dev Used market orders accounting
     */
    mapping(bytes32 => bool) public usedHash;

    /**
     * @dev Lighthouse accounting
     */
    mapping(address => bool) public isLighthouse;

    /**
     * @dev Robot liability shared code smart contract
     */
    address public robotLiabilityLib;

    /**
     * @dev Lightouse shared code smart contract
     */
    address public lighthouseLib;

    /**
     * @dev XRT emission value for utilized gas
     */
    function winnerFromGas(uint256 _gas) public view returns (uint256) {
        // Basic equal formula
        uint256 wn = _gas;

        /* Additional emission table
        if (totalGasUtilizing < 347 * (10 ** 10)) {
            wn *= 6;
        } else if (totalGasUtilizing < 2 * 347 * (10 ** 10)) {
            wn *= 4;
        } else if (totalGasUtilizing < 3 * 347 * (10 ** 10)) {
            wn = wn * 2667 / 1000;
        } else if (totalGasUtilizing < 4 * 347 * (10 ** 10)) {
            wn = wn * 1778 / 1000;
        } else if (totalGasUtilizing < 5 * 347 * (10 ** 10)) {
            wn = wn * 1185 / 1000;
        } */

        return wn ;
    }

    /**
     * @dev Only lighthouse guard
     */
    modifier onlyLighthouse {
        require(isLighthouse[msg.sender]);
        _;
    }

    /**
     * @dev Parameter can be used only once
     * @param _hash Single usage hash
     */
    function usedHashGuard(bytes32 _hash) internal {
        require(!usedHash[_hash]);
        usedHash[_hash] = true;
    }

    /**
     * @dev Create robot liability smart contract
     * @param _ask ABI-encoded ASK order message 
     * @param _bid ABI-encoded BID order message 
     */
    function createLiability(
        bytes _ask,
        bytes _bid
    )
        external 
        onlyLighthouse
        returns (RobotLiability liability)
    {
        // Store in memory available gas
        uint256 gasinit = gasleft();

        // Create liability
        liability = new RobotLiability(robotLiabilityLib);
        emit NewLiability(liability);

        // Parse messages
        require(liability.call(abi.encodePacked(bytes4(0x82fbaa25), _ask))); // liability.ask(...)
        usedHashGuard(liability.askHash());

        require(liability.call(abi.encodePacked(bytes4(0x66193359), _bid))); // liability.bid(...)
        usedHashGuard(liability.bidHash());

        // Transfer lighthouse fee to lighthouse worker directly
        require(xrt.transferFrom(liability.promisor(),
                                 tx.origin,
                                 liability.lighthouseFee()));

        // Transfer liability security and hold on contract
        ERC20 token = liability.token();
        require(token.transferFrom(liability.promisee(),
                                   liability,
                                   liability.cost()));

        // Transfer validator fee and hold on contract
        if (address(liability.validator()) != 0 && liability.validatorFee() > 0)
            require(xrt.transferFrom(liability.promisee(),
                                     liability,
                                     liability.validatorFee()));

        // Accounting gas usage of transaction
        uint256 gas = gasinit - gasleft() + 110525; // Including observation error
        totalGasUtilizing       += gas;
        gasUtilizing[liability] += gas;
     }

    /**
     * @dev Create lighthouse smart contract
     * @param _minimalFreeze Minimal freeze value of XRT token
     * @param _timeoutBlocks Max time of lighthouse silence in blocks
     * @param _name Lighthouse subdomain,
     *              example: for 'my-name' will created 'my-name.lighthouse.0.robonomics.eth' domain
     */
    function createLighthouse(
        uint256 _minimalFreeze,
        uint256 _timeoutBlocks,
        string  _name
    )
        external
        returns (address lighthouse)
    {
        // Name reservation check
        bytes32 subnode = keccak256(abi.encodePacked(lighthouseNode, keccak256(_name)));
        require(ens.resolver(subnode) == 0);

        // Create lighthouse
        lighthouse = new Lighthouse(lighthouseLib, _minimalFreeze, _timeoutBlocks);
        emit NewLighthouse(lighthouse, _name);
        isLighthouse[lighthouse] = true;

        // Register subnode
        ens.setSubnodeOwner(lighthouseNode, keccak256(_name), this);

        // Register lighthouse address
        ens.setResolver(subnode, resolver);
        resolver.setAddr(subnode, lighthouse);
    }

    /**
     * @dev Is called whan after liability finalization
     * @param _gas Liability finalization gas expenses
     */
    function liabilityFinalized(
        uint256 _gas
    )
        external
        returns (bool)
    {
        require(gasUtilizing[msg.sender] > 0);

        uint256 gas = _gas - gasleft();
        totalGasUtilizing        += gas;
        gasUtilizing[msg.sender] += gas;
        require(xrt.mint(tx.origin, winnerFromGas(gasUtilizing[msg.sender])));
        return true;
    }
}

Contract Security Audit

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Contract ABI

[{"constant":true,"inputs":[],"name":"lighthouseFee","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"model","outputs":[{"name":"","type":"bytes"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"askHash","outputs":[{"name":"","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"cost","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"objective","outputs":[{"name":"","type":"bytes"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"xrt","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"validator","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"validatorFee","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"promisee","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"result","outputs":[{"name":"","type":"bytes"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"bidHash","outputs":[{"name":"","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"isFinalized","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"isConfirmed","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"promisor","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"factory","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"token","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_lib","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":false,"stateMutability":"nonpayable","type":"fallback"}]

Deployed Bytecode

Decompile Bytecode

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

Swarm Source

bzzr://2bf09cfb7b6fec015c194fbc94482ffc21aa243ef73ce6671af2ec32618085ae

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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.

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