ETH Price: $2,632.96 (-0.35%)

Contract

0x00880DB9d7c3af3ABD1D12d08c10e1FE1C520031
 

Overview

ETH Balance

0.0000000255 ETH

Eth Value

Less Than $0.01 (@ $2,632.96/ETH)

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Claim_reward60707882018-08-01 20:00:542269 days ago1533153654IN
0x00880DB9...E1C520031
0 ETH0.0008040420
Claim_reward60706382018-08-01 19:23:082269 days ago1533151388IN
0x00880DB9...E1C520031
0 ETH0.00016084
Claim_reward60706032018-08-01 19:13:512269 days ago1533150831IN
0x00880DB9...E1C520031
0 ETH0.00008042
Claim_reward60706032018-08-01 19:13:512269 days ago1533150831IN
0x00880DB9...E1C520031
0 ETH0.00008042
Claim_reward60706032018-08-01 19:13:512269 days ago1533150831IN
0x00880DB9...E1C520031
0 ETH0.00012063
Claim_reward60705972018-08-01 19:11:412269 days ago1533150701IN
0x00880DB9...E1C520031
0 ETH0.00012063
Place Bet60703522018-08-01 18:04:192269 days ago1533146659IN
0x00880DB9...E1C520031
0.03 ETH0.0030378440
Place Bet60703492018-08-01 18:03:082269 days ago1533146588IN
0x00880DB9...E1C520031
0.25 ETH0.0008354715
Place Bet60703482018-08-01 18:02:492269 days ago1533146569IN
0x00880DB9...E1C520031
0.05 ETH0.000167093
Place Bet60703462018-08-01 18:02:162269 days ago1533146536IN
0x00880DB9...E1C520031
0.25 ETH0.0011391915
Place Bet60703352018-08-01 17:59:062269 days ago1533146346IN
0x00880DB9...E1C520031
0.1 ETH0.0007594610
Place Bet60703292018-08-01 17:57:432269 days ago1533146263IN
0x00880DB9...E1C520031
0.01 ETH0.000222794
Place Bet60703272018-08-01 17:57:202269 days ago1533146240IN
0x00880DB9...E1C520031
0.015 ETH0.000303784
Place Bet60703212018-08-01 17:56:192269 days ago1533146179IN
0x00880DB9...E1C520031
0.1 ETH0.000166864.1
Place Bet60702862018-08-01 17:45:112269 days ago1533145511IN
0x00880DB9...E1C520031
0.1 ETH0.000303784
Place Bet60702102018-08-01 17:24:262269 days ago1533144266IN
0x00880DB9...E1C520031
0.05 ETH0.000151892
Place Bet60701892018-08-01 17:19:022269 days ago1533143942IN
0x00880DB9...E1C520031
1 ETH0.000222794
Place Bet60701872018-08-01 17:18:212269 days ago1533143901IN
0x00880DB9...E1C520031
1.4 ETH0.000282794
Place Bet60701852018-08-01 17:18:102269 days ago1533143890IN
0x00880DB9...E1C520031
1.6 ETH0.000363784
Place Bet60701302018-08-01 17:05:342269 days ago1533143134IN
0x00880DB9...E1C520031
0.1 ETH0.000211892

Latest 8 internal transactions

Advanced mode:
Parent Transaction Hash Block From To
60707882018-08-01 20:00:542269 days ago1533153654
0x00880DB9...E1C520031
0.10327419 ETH
60706382018-08-01 19:23:082269 days ago1533151388
0x00880DB9...E1C520031
0.34424731 ETH
60706032018-08-01 19:13:512269 days ago1533150831
0x00880DB9...E1C520031
0.68849462 ETH
60706032018-08-01 19:13:512269 days ago1533150831
0x00880DB9...E1C520031
0.17212365 ETH
60706032018-08-01 19:13:512269 days ago1533150831
0x00880DB9...E1C520031
3.4424731 ETH
60705972018-08-01 19:11:412269 days ago1533150701
0x00880DB9...E1C520031
0.05163709 ETH
60705852018-08-01 19:08:282269 days ago1533150508
0x00880DB9...E1C520031
0.25275 ETH
60701022018-08-01 17:00:082269 days ago1533142808  Contract Creation0 ETH
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x996486AE...286513D51
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 2018-07-11
*/

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;
  }
}


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

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

    uint public winnerPoolTotal;
    string public constant version = "0.2.3";

    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");
        
    }

    // 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 {
        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 {
            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);
        }

        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 {
        chronus.voided_bet=true;
        chronus.race_end = true;
        chronus.voided_timestamp=uint32(now);
    }

    // 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));
    }

    // 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);
        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":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":"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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