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Bet ID User Time Bet Lucky Target Payout Profit
2664916 john7 13:21:59 $0.0000 64.4252 >52.8999 2x +$0.0000
2664915 john7 13:21:58 $0.0000 31.3777 >52.8999 2x -$0.0000
2664914 john7 13:21:55 $0.0000 90.5819 >52.8999 2x +$0.0000
2664913 john7 13:21:43 $0.0000 82.8794 >52.8999 2x +$0.0000
2664912 john7 13:21:42 $0.0000 02.6238 >52.8999 2x -$0.0000
2664911 john7 13:21:41 $0.0000 51.7991 >52.8999 2x -$0.0000
2664910 john7 13:21:40 $0.0000 32.4258 >52.8999 2x -$0.0000
2664909 john7 13:21:34 $0.0000 72.3653 >52.8999 2x +$0.0000
2664908 john7 13:21:33 $0.0000 01.4645 >52.8999 2x -$0.0000
2664907 john7 13:21:32 $0.0000 26.4648 >52.8999 2x -$0.0000
2664906 john7 13:21:30 $0.0000 04.4663 >52.8999 2x -$0.0000
2664905 john7 13:21:27 $0.0000 09.6060 >52.8999 2x -$0.0000
2664904 asuuuuuu 22:33:36 $0.0000 74.9672 >91.5892 11.2x -$0.0000
2664903 asuuuuuu 22:33:35 $0.0000 56.8723 >91.5892 11.2x -$0.0000
2664902 asuuuuuu 22:33:34 $0.0000 42.0746 >91.5892 11.2x -$0.0000
2664901 asuuuuuu 22:33:33 $0.0000 59.2190 >91.5892 11.2x -$0.0000
2664900 asuuuuuu 22:33:31 $0.0000 26.5238 >91.5892 11.2x -$0.0000
2664899 asuuuuuu 22:33:30 $0.0000 56.2222 >91.5892 11.2x -$0.0000
2664898 asuuuuuu 22:33:23 $0.0000 09.4740 >21.4999 1.2x -$0.0000
2664897 asuuuuuu 22:33:22 $0.0000 36.5916 >21.4999 1.2x +$0.0000
2664896 asuuuuuu 22:33:20 $0.0000 93.1675 >21.4999 1.2x +$0.0000
2664895 asuuuuuu 22:33:08 $0.0000 74.7144 >21.4999 1.2x +$0.0000
2664894 amaleshmahato 01:56:14 $0.0049 21.9470 >52.8999 2x -$0.0049
2664893 amaleshmahato 01:56:11 $0.0049 36.6323 >52.8999 2x -$0.0049
2664892 amaleshmahato 01:56:10 $0.0049 17.2752 >52.8999 2x -$0.0049
2664891 amaleshmahato 01:56:09 $0.0049 77.9775 >52.8999 2x +$0.0049
2664890 amaleshmahato 01:56:07 $0.0049 61.5421 >52.8999 2x +$0.0049
2664889 amaleshmahato 01:55:41 $0.0200 01.3653 >52.8999 2x -$0.0200
2664888 amaleshmahato 01:55:40 $0.0200 45.5665 >52.8999 2x -$0.0200
2664887 amaleshmahato 01:55:39 $0.0200 17.4535 >52.8999 2x -$0.0200
2664886 amaleshmahato 01:55:38 $0.0200 75.7980 >52.8999 2x +$0.0200
2664885 amaleshmahato 01:55:36 $0.0200 23.0746 >52.8999 2x -$0.0200
2664884 amaleshmahato 01:55:35 $0.0200 58.9256 >52.8999 2x +$0.0200
2664883 amaleshmahato 01:55:34 $0.0200 67.6743 >52.8999 2x +$0.0200
2664882 amaleshmahato 01:55:33 $0.0200 37.1514 >52.8999 2x -$0.0200
2664881 amaleshmahato 01:55:31 $0.0200 64.2942 >52.8999 2x +$0.0200
2664880 amaleshmahato 01:55:21 $0.1000 26.9447 >52.8999 2x -$0.1000
2664879 amaleshmahato 01:55:20 $0.1000 44.5798 >52.8999 2x -$0.1000
2664878 amaleshmahato 01:55:18 $0.1000 54.3419 >52.8999 2x +$0.1000
2664877 amaleshmahato 01:55:09 $0.2000 25.3304 >52.8999 2x -$0.2000
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