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Bet ID User Time Bet Lucky Target Payout Profit
2195828 maso1960 20:36:29 $0.0000 42.9478 >52.8999 2x -$0.0000
2195827 maso1960 20:36:25 $0.0000 28.7012 >52.8999 2x -$0.0000
2195826 maso1960 20:36:23 $0.0000 21.2974 >52.8999 2x -$0.0000
2195825 maso1960 20:36:18 $0.0000 11.7838 >52.8999 2x -$0.0000
2195824 maso1960 00:49:15 $0.0000 85.7725 >52.8999 2x +$0.0000
2195823 maso1960 00:49:14 $0.0000 45.0328 >52.8999 2x -$0.0000
2195822 maso1960 00:49:13 $0.0000 28.8226 >52.8999 2x -$0.0000
2195821 maso1960 00:49:10 $0.0000 16.3985 >52.8999 2x -$0.0000
2195820 maso1960 00:49:07 $0.0000 98.7601 >52.8999 2x +$0.0000
2195819 maso1960 00:48:53 $0.0000 60.8163 >52.8999 2x +$0.0000
2195818 maso1960 00:48:52 $0.0000 35.8975 >52.8999 2x -$0.0000
2195817 maso1960 00:48:51 $0.0000 19.9425 >52.8999 2x -$0.0000
2195816 maso1960 00:48:50 $0.0000 08.7208 >52.8999 2x -$0.0000
2195815 maso1960 00:48:41 $0.0000 54.6155 >52.8999 2x +$0.0000
2195814 maso1960 00:48:35 $0.0000 28.3715 >52.8999 2x -$0.0000
2195813 U18098000 21:15:38 $0.0020 41.2966 <47.1000 2x +$0.0020
2195812 U18098000 21:15:36 $0.0010 96.9917 <47.1000 2x -$0.0010
2195811 U18098000 21:15:32 $0.0020 64.0911 >52.8999 2x +$0.0020
2195810 U18098000 21:15:30 $0.0010 48.7114 >52.8999 2x -$0.0010
2195809 U18098000 21:15:26 $0.0020 34.6592 <47.1000 2x +$0.0020
2195808 U18098000 21:15:23 $0.0010 34.2839 >52.8999 2x -$0.0010
2195807 U18098000 21:15:21 $0.0010 20.7778 <47.1000 2x +$0.0010
2195806 U18098000 21:15:20 $0.0010 37.4007 <47.1000 2x +$0.0010
2195805 U18098000 21:15:16 $0.0020 94.8870 >52.8999 2x +$0.0020
2195804 U18098000 21:15:14 $0.0010 52.4656 >52.8999 2x -$0.0010
2195803 U18098000 21:15:09 $0.0160 34.2363 <47.1000 2x +$0.0160
2195802 U18098000 21:15:06 $0.0080 40.8167 >52.8999 2x -$0.0080
2195801 U18098000 21:15:03 $0.0040 96.2585 <47.1000 2x -$0.0040
2195800 U18098000 21:15:01 $0.0020 81.6347 <47.1000 2x -$0.0020
2195799 U18098000 21:14:57 $0.0010 10.9128 >52.8999 2x -$0.0010
2195798 U18098000 21:14:53 $0.0020 53.6775 >52.8999 2x +$0.0020
2195797 U18098000 21:14:50 $0.0010 54.4961 <47.1000 2x -$0.0010
2195796 U18098000 21:14:48 $0.0010 83.4929 >52.8999 2x +$0.0010
2195795 U18098000 21:14:44 $0.0020 04.0888 <47.1000 2x +$0.0020
2195794 U18098000 21:14:42 $0.0010 76.6554 <47.1000 2x -$0.0010
2195793 U18098000 21:14:40 $0.0010 87.3333 >52.8999 2x +$0.0010
2195792 U18098000 21:14:39 $0.0010 83.0247 >52.8999 2x +$0.0010
2195791 U18098000 21:14:36 $0.0010 24.1842 <47.1000 2x +$0.0010
2195790 U18098000 21:14:34 $0.0010 59.6423 >52.8999 2x +$0.0010
2195789 U18098000 21:14:31 $0.0040 38.9455 <47.1000 2x +$0.0040
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));


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Your Affiliate Statistics

Available Commission:
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Total Paid:
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Depositors:
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Non-depositors:
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Commission of Edge:
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  • Total Bets:
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  •      Total Wagered:
    $0.0000