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Transaction Hash
Method
Block
From
To
Claim_reward71456942019-01-29 21:06:372109 days ago1548795997IN
0x6F5c7932...eccfE29E9
0 ETH0.000201015
Place Bet71452182019-01-29 18:53:162109 days ago1548787996IN
0x6F5c7932...eccfE29E9
0.01 ETH0.000181892
Place Bet71452112019-01-29 18:51:532109 days ago1548787913IN
0x6F5c7932...eccfE29E9
0.016 ETH0.0009094610
Place Bet71451872019-01-29 18:44:222109 days ago1548787462IN
0x6F5c7932...eccfE29E9
0.016 ETH0.000973469.18835465

Latest 4 internal transactions

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Parent Transaction Hash Block From To
71456942019-01-29 21:06:372109 days ago1548795997
0x6F5c7932...eccfE29E9
0.03885 ETH
71454882019-01-29 20:04:222109 days ago1548792262
0x6F5c7932...eccfE29E9
0.00105 ETH
71454882019-01-29 20:04:222109 days ago1548792262
0x6F5c7932...eccfE29E9
0.0021 ETH
71449992019-01-29 17:51:362109 days ago1548784296  Contract Creation0 ETH
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0xC8ABbe9b...7847e31B0
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
Betting

Compiler Version
v0.4.24+commit.e67f0147

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
/**
 *Submitted for verification at Etherscan.io on 2018-09-01
*/

pragma solidity ^0.4.20;

pragma solidity ^0.4.21;
library SafeMath {
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

  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 c;
  }

  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;
  }
}

interface P3DTakeout {
    function buyTokens() external payable;
}

contract Betting{
    using SafeMath for uint256; //using safemath

    address public owner; //owner address
    address house_takeout = 0xf783A81F046448c38f3c863885D9e99D10209779;
    P3DTakeout P3DContract_;

    uint public winnerPoolTotal;
    string public constant version = "0.2.4";

    struct chronus_info {
        bool  betting_open; // boolean: check if betting is open
        bool  race_start; //boolean: check if race has started
        bool  race_end; //boolean: check if race has ended
        bool  voided_bet; //boolean: check if race has been voided
        uint32  starting_time; // timestamp of when the race starts
        uint32  betting_duration;
        uint32  race_duration; // duration of the race
        uint32 voided_timestamp;
    }

    struct horses_info{
        int64  BTC_delta; //horses.BTC delta value
        int64  ETH_delta; //horses.ETH delta value
        int64  LTC_delta; //horses.LTC delta value
        bytes32 BTC; //32-bytes equivalent of horses.BTC
        bytes32 ETH; //32-bytes equivalent of horses.ETH
        bytes32 LTC;  //32-bytes equivalent of horses.LTC
    }

    struct bet_info{
        bytes32 horse; // coin on which amount is bet on
        uint amount; // amount bet by Bettor
    }
    struct coin_info{
        uint256 pre; // locking price
        uint256 post; // ending price
        uint160 total; // total coin pool
        uint32 count; // number of bets
        bool price_check;
    }
    struct voter_info {
        uint160 total_bet; //total amount of bet placed
        bool rewarded; // boolean: check for double spending
        mapping(bytes32=>uint) bets; //array of bets
    }

    mapping (bytes32 => coin_info) public coinIndex; // mapping coins with pool information
    mapping (address => voter_info) voterIndex; // mapping voter address with Bettor information

    uint public total_reward; // total reward to be awarded
    uint32 total_bettors;
    mapping (bytes32 => bool) public winner_horse;


    // tracking events
    event Deposit(address _from, uint256 _value, bytes32 _horse, uint256 _date);
    event Withdraw(address _to, uint256 _value);
    event PriceCallback(bytes32 coin_pointer, uint256 result, bool isPrePrice);
    event RefundEnabled(string reason);

    // constructor
    constructor() public payable {
        
        owner = msg.sender;
        
        horses.BTC = bytes32("BTC");
        horses.ETH = bytes32("ETH");
        horses.LTC = bytes32("LTC");
        
        P3DContract_ = P3DTakeout(0x72b2670e55139934D6445348DC6EaB4089B12576);
    }

    // data access structures
    horses_info public horses;
    chronus_info public chronus;

    // modifiers for restricting access to methods
    modifier onlyOwner {
        require(owner == msg.sender);
        _;
    }

    modifier duringBetting {
        require(chronus.betting_open);
        require(now < chronus.starting_time + chronus.betting_duration);
        _;
    }

    modifier beforeBetting {
        require(!chronus.betting_open && !chronus.race_start);
        _;
    }

    modifier afterRace {
        require(chronus.race_end);
        _;
    }

    //function to change owner
    function changeOwnership(address _newOwner) onlyOwner external {
        require(now > chronus.starting_time + chronus.race_duration + 60 minutes);
        owner = _newOwner;
    }

    function priceCallback (bytes32 coin_pointer, uint256 result, bool isPrePrice ) external onlyOwner {
        require (!chronus.race_end);
        emit PriceCallback(coin_pointer, result, isPrePrice);
        chronus.race_start = true;
        chronus.betting_open = false;
        if (isPrePrice) {
            if (now >= chronus.starting_time+chronus.betting_duration+ 60 minutes) {
                emit RefundEnabled("Late start price");
                forceVoidRace();
            } else {
                coinIndex[coin_pointer].pre = result;
            }
        } else if (!isPrePrice){
            if (coinIndex[coin_pointer].pre > 0 ){
                if (now >= chronus.starting_time+chronus.race_duration+ 60 minutes) {
                    emit RefundEnabled("Late end price");
                    forceVoidRace();
                } else {
                    coinIndex[coin_pointer].post = result;
                    coinIndex[coin_pointer].price_check = true;

                    if (coinIndex[horses.ETH].price_check && coinIndex[horses.BTC].price_check && coinIndex[horses.LTC].price_check) {
                        reward();
                    }
                }
            } else {
                emit RefundEnabled("End price came before start price");
                forceVoidRace();
            }
        }
    }

    // place a bet on a coin(horse) lockBetting
    function placeBet(bytes32 horse) external duringBetting payable  {
        require(msg.value >= 0.01 ether);
        if (voterIndex[msg.sender].total_bet==0) {
            total_bettors+=1;
        }
        uint _newAmount = voterIndex[msg.sender].bets[horse] + msg.value;
        voterIndex[msg.sender].bets[horse] = _newAmount;
        voterIndex[msg.sender].total_bet += uint160(msg.value);
        uint160 _newTotal = coinIndex[horse].total + uint160(msg.value);
        uint32 _newCount = coinIndex[horse].count + 1;
        coinIndex[horse].total = _newTotal;
        coinIndex[horse].count = _newCount;
        emit Deposit(msg.sender, msg.value, horse, now);
    }

    // fallback method for accepting payments
    function () private payable {}

    // method to place the oraclize queries
    function setupRace(uint32 _bettingDuration, uint32 _raceDuration) onlyOwner beforeBetting external payable {
            chronus.starting_time = uint32(block.timestamp);
            chronus.betting_open = true;
            chronus.betting_duration = _bettingDuration;
            chronus.race_duration = _raceDuration;
    }

    // method to calculate reward (called internally by callback)
    function reward() internal {
        /*
        calculating the difference in price with a precision of 5 digits
        not using safemath since signed integers are handled
        */
        horses.BTC_delta = int64(coinIndex[horses.BTC].post - coinIndex[horses.BTC].pre)*100000/int64(coinIndex[horses.BTC].pre);
        horses.ETH_delta = int64(coinIndex[horses.ETH].post - coinIndex[horses.ETH].pre)*100000/int64(coinIndex[horses.ETH].pre);
        horses.LTC_delta = int64(coinIndex[horses.LTC].post - coinIndex[horses.LTC].pre)*100000/int64(coinIndex[horses.LTC].pre);

        total_reward = (coinIndex[horses.BTC].total) + (coinIndex[horses.ETH].total) + (coinIndex[horses.LTC].total);
        if (total_bettors <= 1) {
            emit RefundEnabled("Not enough participants");
            forceVoidRace();
        } else {
            // house takeout
            uint house_fee = total_reward.mul(5).div(100);
            require(house_fee < address(this).balance);
            total_reward = total_reward.sub(house_fee);
            house_takeout.transfer(house_fee);
            
            // p3d takeout
            uint p3d_fee = house_fee/2;
            require(p3d_fee < address(this).balance);
            total_reward = total_reward.sub(p3d_fee);
            P3DContract_.buyTokens.value(p3d_fee)();
        }

        if (horses.BTC_delta > horses.ETH_delta) {
            if (horses.BTC_delta > horses.LTC_delta) {
                winner_horse[horses.BTC] = true;
                winnerPoolTotal = coinIndex[horses.BTC].total;
            }
            else if(horses.LTC_delta > horses.BTC_delta) {
                winner_horse[horses.LTC] = true;
                winnerPoolTotal = coinIndex[horses.LTC].total;
            } else {
                winner_horse[horses.BTC] = true;
                winner_horse[horses.LTC] = true;
                winnerPoolTotal = coinIndex[horses.BTC].total + (coinIndex[horses.LTC].total);
            }
        } else if(horses.ETH_delta > horses.BTC_delta) {
            if (horses.ETH_delta > horses.LTC_delta) {
                winner_horse[horses.ETH] = true;
                winnerPoolTotal = coinIndex[horses.ETH].total;
            }
            else if (horses.LTC_delta > horses.ETH_delta) {
                winner_horse[horses.LTC] = true;
                winnerPoolTotal = coinIndex[horses.LTC].total;
            } else {
                winner_horse[horses.ETH] = true;
                winner_horse[horses.LTC] = true;
                winnerPoolTotal = coinIndex[horses.ETH].total + (coinIndex[horses.LTC].total);
            }
        } else {
            if (horses.LTC_delta > horses.ETH_delta) {
                winner_horse[horses.LTC] = true;
                winnerPoolTotal = coinIndex[horses.LTC].total;
            } else if(horses.LTC_delta < horses.ETH_delta){
                winner_horse[horses.ETH] = true;
                winner_horse[horses.BTC] = true;
                winnerPoolTotal = coinIndex[horses.ETH].total + (coinIndex[horses.BTC].total);
            } else {
                winner_horse[horses.LTC] = true;
                winner_horse[horses.ETH] = true;
                winner_horse[horses.BTC] = true;
                winnerPoolTotal = coinIndex[horses.ETH].total + (coinIndex[horses.BTC].total) + (coinIndex[horses.LTC].total);
            }
        }
        chronus.race_end = true;
    }

    // method to calculate an invidual's reward
    function calculateReward(address candidate) internal afterRace constant returns(uint winner_reward) {
        voter_info storage bettor = voterIndex[candidate];
        if(chronus.voided_bet) {
            winner_reward = bettor.total_bet;
        } else {
            uint winning_bet_total;
            if(winner_horse[horses.BTC]) {
                winning_bet_total += bettor.bets[horses.BTC];
            } if(winner_horse[horses.ETH]) {
                winning_bet_total += bettor.bets[horses.ETH];
            } if(winner_horse[horses.LTC]) {
                winning_bet_total += bettor.bets[horses.LTC];
            }
            winner_reward += (((total_reward.mul(10000000)).div(winnerPoolTotal)).mul(winning_bet_total)).div(10000000);
        }
    }

    // method to just check the reward amount
    function checkReward() afterRace external constant returns (uint) {
        require(!voterIndex[msg.sender].rewarded);
        return calculateReward(msg.sender);
    }

    // method to claim the reward amount
    function claim_reward() afterRace external {
        require(!voterIndex[msg.sender].rewarded);
        uint transfer_amount = calculateReward(msg.sender);
        require(address(this).balance >= transfer_amount);
        voterIndex[msg.sender].rewarded = true;
        msg.sender.transfer(transfer_amount);
        emit Withdraw(msg.sender, transfer_amount);
    }

    function forceVoidRace() internal {
        require(!chronus.voided_bet);
        chronus.voided_bet=true;
        chronus.race_end = true;
        chronus.voided_timestamp=uint32(now);
    }
    
    //this methohd can only be called by controller contract in case of timestamp errors
    function forceVoidExternal() external onlyOwner {
        forceVoidRace();
        emit RefundEnabled("Inaccurate price timestamp");
    }

    // exposing the coin pool details for DApp
    function getCoinIndex(bytes32 index, address candidate) external constant returns (uint, uint, uint, bool, uint) {
        uint256 coinPrePrice;
        uint256 coinPostPrice;
        if (coinIndex[horses.ETH].pre > 0 && coinIndex[horses.BTC].pre > 0 && coinIndex[horses.LTC].pre > 0) {
            coinPrePrice = coinIndex[index].pre;
        } 
        if (coinIndex[horses.ETH].post > 0 && coinIndex[horses.BTC].post > 0 && coinIndex[horses.LTC].post > 0) {
            coinPostPrice = coinIndex[index].post;
        }
        return (coinIndex[index].total, coinPrePrice, coinPostPrice, coinIndex[index].price_check, voterIndex[candidate].bets[index]);
    }

    // exposing the total reward amount for DApp
    function reward_total() external constant returns (uint) {
        return ((coinIndex[horses.BTC].total) + (coinIndex[horses.ETH].total) + (coinIndex[horses.LTC].total));
    }
    
    function getChronus() external view returns (uint32[]) {
        uint32[] memory chronusData = new uint32[](3);
        chronusData[0] = chronus.starting_time;
        chronusData[1] = chronus.betting_duration;
        chronusData[2] = chronus.race_duration;
        return (chronusData);
        // return (chronus.starting_time, chronus.betting_duration ,chronus.race_duration);
    }

    // in case of any errors in race, enable full refund for the Bettors to claim
    function refund() external onlyOwner {
        require(now > chronus.starting_time + chronus.race_duration + 60 minutes);
        require((chronus.betting_open && !chronus.race_start)
            || (chronus.race_start && !chronus.race_end));
        chronus.voided_bet = true;
        chronus.race_end = true;
        chronus.voided_timestamp=uint32(now);
    }

    // method to claim unclaimed winnings after 30 day notice period
    function recovery() external onlyOwner{
        require((chronus.race_end && now > chronus.starting_time + chronus.race_duration + (30 days))
            || (chronus.voided_bet && now > chronus.voided_timestamp + (30 days)));
        house_takeout.transfer(address(this).balance);
    }
}

Contract Security Audit

Contract ABI

[{"constant":false,"inputs":[{"name":"horse","type":"bytes32"}],"name":"placeBet","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[],"name":"claim_reward","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"bytes32"}],"name":"winner_horse","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"coin_pointer","type":"bytes32"},{"name":"result","type":"uint256"},{"name":"isPrePrice","type":"bool"}],"name":"priceCallback","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"winnerPoolTotal","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_newOwner","type":"address"}],"name":"changeOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"horses","outputs":[{"name":"BTC_delta","type":"int64"},{"name":"ETH_delta","type":"int64"},{"name":"LTC_delta","type":"int64"},{"name":"BTC","type":"bytes32"},{"name":"ETH","type":"bytes32"},{"name":"LTC","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"forceVoidExternal","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"version","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"refund","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"getChronus","outputs":[{"name":"","type":"uint32[]"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"index","type":"bytes32"},{"name":"candidate","type":"address"}],"name":"getCoinIndex","outputs":[{"name":"","type":"uint256"},{"name":"","type":"uint256"},{"name":"","type":"uint256"},{"name":"","type":"bool"},{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"chronus","outputs":[{"name":"betting_open","type":"bool"},{"name":"race_start","type":"bool"},{"name":"race_end","type":"bool"},{"name":"voided_bet","type":"bool"},{"name":"starting_time","type":"uint32"},{"name":"betting_duration","type":"uint32"},{"name":"race_duration","type":"uint32"},{"name":"voided_timestamp","type":"uint32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_bettingDuration","type":"uint32"},{"name":"_raceDuration","type":"uint32"}],"name":"setupRace","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"reward_total","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"checkReward","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"bytes32"}],"name":"coinIndex","outputs":[{"name":"pre","type":"uint256"},{"name":"post","type":"uint256"},{"name":"total","type":"uint160"},{"name":"count","type":"uint32"},{"name":"price_check","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"total_reward","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"recovery","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[],"payable":true,"stateMutability":"payable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":false,"name":"_from","type":"address"},{"indexed":false,"name":"_value","type":"uint256"},{"indexed":false,"name":"_horse","type":"bytes32"},{"indexed":false,"name":"_date","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"_to","type":"address"},{"indexed":false,"name":"_value","type":"uint256"}],"name":"Withdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"coin_pointer","type":"bytes32"},{"indexed":false,"name":"result","type":"uint256"},{"indexed":false,"name":"isPrePrice","type":"bool"}],"name":"PriceCallback","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"reason","type":"string"}],"name":"RefundEnabled","type":"event"}]

Deployed Bytecode

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