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Bet ID User Time Bet Lucky Target Payout Profit
2204820 net8910 05:17:06 $0.0000 62.9256 >52.8999 2x +$0.0000
2204819 olga6 20:10:40 $0.0000 64.7757 >52.8999 2x +$0.0000
2204818 olga6 20:10:39 $0.0000 34.1528 >52.8999 2x -$0.0000
2204817 olga6 20:10:28 $0.0000 19.9878 >52.8999 2x -$0.0000
2204816 olga6 14:55:43 $0.0000 55.2076 <47.1000 2x -$0.0000
2204815 olga6 14:43:21 $0.0000 08.6206 <47.1000 2x +$0.0000
2204814 olga6 14:43:08 $0.0000 94.4369 <47.1000 2x -$0.0000
2204813 olga6 14:43:04 $0.0000 63.7785 <47.1000 2x -$0.0000
2204812 olga6 14:42:47 $0.0000 23.3701 <47.1000 2x +$0.0000
2204811 olga6 14:42:30 $0.0000 40.5501 <47.1000 2x +$0.0000
2204810 olga6 14:41:53 $0.0000 23.9281 <47.1000 2x +$0.0000
2204809 olga6 14:41:48 $0.0000 55.5001 <47.1000 2x -$0.0000
2204808 Rus24 10:22:55 $0.0000 12.0206 <47.1000 2x +$0.0000
2204807 Rus24 10:22:53 $0.0000 94.1543 <47.1000 2x -$0.0000
2204806 Rus24 10:22:52 $0.0000 29.7422 <47.1000 2x +$0.0000
2204805 Rus24 10:22:51 $0.0000 33.3012 <47.1000 2x +$0.0000
2204804 Rus24 10:22:50 $0.0000 06.5673 <47.1000 2x +$0.0000
2204803 Rus24 10:22:48 $0.0000 23.8976 <47.1000 2x +$0.0000
2204802 Rus24 10:22:47 $0.0000 53.7116 <47.1000 2x -$0.0000
2204801 Rus24 10:22:46 $0.0000 72.0700 <47.1000 2x -$0.0000
2204800 Rus24 10:22:42 $0.0000 45.3092 <47.1000 2x +$0.0000
2204799 Rus24 10:22:32 $0.0000 04.8365 <47.1000 2x +$0.0000
2204798 Rus24 10:22:29 $0.0000 91.4866 <47.1000 2x -$0.0000
2204797 Rus24 10:22:28 $0.0000 33.9819 <47.1000 2x +$0.0000
2204796 Rus24 10:22:26 $0.0000 13.0833 <47.1000 2x +$0.0000
2204795 Rus24 10:22:25 $0.0000 71.2592 <47.1000 2x -$0.0000
2204794 Rus24 10:22:23 $0.0000 13.4911 <47.1000 2x +$0.0000
2204793 Rus24 10:20:17 $0.0000 06.6350 <47.1000 2x +$0.0000
2204792 Rus24 10:20:16 $0.0000 98.5275 <47.1000 2x -$0.0000
2204791 Rus24 10:20:09 $0.0000 85.5788 <47.1000 2x -$0.0000
2204790 Rus24 10:20:08 $0.0000 28.8334 <47.1000 2x +$0.0000
2204789 Rus24 10:19:46 $0.0000 57.5103 <47.1000 2x -$0.0000
2204788 Rus24 10:19:44 $0.0000 26.5664 <47.1000 2x +$0.0000
2204787 Rus24 10:19:43 $0.0000 17.3419 <47.1000 2x +$0.0000
2204786 Rus24 10:19:42 $0.0000 08.5483 <47.1000 2x +$0.0000
2204785 Rus24 10:19:36 $0.0000 75.9718 <47.1000 2x -$0.0000
2204784 Rus24 10:19:34 $0.0000 37.3772 <47.1000 2x +$0.0000
2204783 Rus24 10:19:33 $0.0000 24.6632 <47.1000 2x +$0.0000
2204782 Rus24 10:19:32 $0.0000 56.0255 <47.1000 2x -$0.0000
2204781 Rus24 10:19:30 $0.0000 80.5787 <47.1000 2x -$0.0000
Bet ID User Time Bet Lucky Target Payout Profit

Provable Fairness Overview

This game is provably fair. What that means is that there is no way the site can cheat you by picking numbers to make you lose. You can take our word for it, but for the crypto-nerds out there, here are the gory details: When you click "Rerandomize(Change client seed)" we make up a secret random string (the server seed) that is used to randomize the rolls. You are shown the hash of the server seed, and are asked to supply your own random number (the client seed) to further randomize the rolls.

Current Seed Pair

The client seed currently in use:


The sha256 hash of the server seed you are currently using is:


and the number of bets you have made using it:


Rerandomize(Change client seed)

Each time you roll, the server and client seeds are combined with the number of rolls you have made since the seeds were selected to create the roll. Notice that you are shown the hash of the server seed before picking your client seed. This ensures that there is no way we can influence the numbers you will roll.


Provably Fair

7Double offers state of the art verification which allows our users to check the integrity of every roll and confirm they are not manipulated. Our random numbers are generated through the use of two seeds, a server seed, and your client seed. The server seed is created before you specify your client seed, ensuring that a server seed purposely in our favor cannot be generated. Together, along with the nonce (# of bets made with seed pair), the seeds are used to create a provably fair roll number within the 0-99.9999 range.

Seeds

In the provably fair tab, users can change and verify seeds used. To do this, click "Rerandomize" . Before you specify your own seed, you are shown the SHA256 hash of the server seed that will be used alongside whichever seed you pick. Changing the client seed used will also reveal the previous server seed, which you can then verify was the seed we hashed and showed you.

Roll Numbers

To create a roll number, 7Double uses a multi-step process to create a roll number 0-99.9999. Both client and server seeds and a nonce are combined with hmac-sha512(server_seed, client_seed-nonce) which will generate a hex string. The nonce is the # of bets you made with the current seed pair. First five characters are taken from the hex string to create a roll number that is 0-1,048,575. If the roll number is over 999,999, the proccess is repeated with the next five characters skipping the previous set. This is done until a number less than 1,000,000 is achieved. In the astronomically unlikely event that all possible 5 character combinations are greater, 99.9999 is used as the roll number. The resulting number 0-999,999 is applied a modulus of 10^6, to obtain a roll number 0-999999, and divided by 10^4 to result a 0-99.9999 number.

How to Verify

JS Verify
Copy the 3-line value from the "Rerandomize(Change client seed)" window into the first input of those pages and click "verify" for a list of the numbers you rolled.

You can use a third party tool to verify roll numbers or use the following Node.js script that recreates the proccess described above. It will output your roll number.

              
            //the seed pair itself
var clientSeed = "your client seed"; //dont forget to exclude the dash and the nonce!
var serverSeed = "your server seed";
//bet made with seed pair (excluding current bet)
var nonce = 0;
//crypto lib for hmac function
var crypto = require('crypto');
var roll = function(key, text) {
//create HMAC using server seed as key and client seed as message
var hash = crypto.createHmac('sha512', key).update(text).digest('hex');
var index = 0;
var lucky = parseInt(hash.substring(index * 5, index * 5 + 5), 16);
//keep grabbing characters from the hash while greater than
while (lucky >= Math.pow(10, 6)) {
index++;
lucky = parseInt(hash.substring(index * 5, index * 5 + 5), 16);
//if we reach the end of the hash, just default to highest number
if (index * 5 + 5 > 128) {
lucky = 99.9999;
break;
}
}
lucky %= Math.pow(10, 6);
lucky /= Math.pow(10, 4);
return lucky;
}
console.log(roll(clientSeed+'-'+nonce,serverSeed));


AFFILIATE

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Your Affiliate Statistics

Available Commission:
0.0000 USD
Total Paid:
0.0000 USD
Depositors:
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Non-depositors:
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Commission of Edge:
20%


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  • Total Bets:
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  •      Total Wagered:
    $0.0000