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Bet ID User Time Bet Lucky Target Payout Profit
2210865 alireza1400 05:09:03 $0.0000 25.5733 >52.8999 2x -$0.0000
2210864 mdrakib123 00:19:12 $0.0002 29.7421 >52.8999 2x -$0.0002
2210863 mdrakib123 00:19:04 $0.0001 31.5034 >52.8999 2x -$0.0001
2210862 mdrakib123 00:19:01 $0.0001 79.5178 >52.8999 2x +$0.0001
2210861 mdrakib123 21:18:38 $0.0010 50.8153 >52.8999 2x -$0.0010
2210860 mdrakib123 21:18:37 $0.0010 14.9159 >52.8999 2x -$0.0010
2210859 mdrakib123 21:18:35 $0.0010 74.0402 >52.8999 2x +$0.0010
2210858 mdrakib123 21:18:34 $0.0010 07.5752 >52.8999 2x -$0.0010
2210857 mdrakib123 21:18:31 $0.0010 64.4459 >52.8999 2x +$0.0010
2210856 mdrakib123 21:18:25 $0.0001 49.4811 >52.8999 2x -$0.0001
2210855 mdrakib123 21:18:24 $0.0001 66.1971 >52.8999 2x +$0.0001
2210854 mdrakib123 21:18:22 $0.0001 27.3717 >52.8999 2x -$0.0001
2210853 mdrakib123 21:18:21 $0.0001 59.7887 >52.8999 2x +$0.0001
2210852 mdrakib123 21:18:20 $0.0001 15.1639 >52.8999 2x -$0.0001
2210851 mdrakib123 21:18:19 $0.0001 55.4540 >52.8999 2x +$0.0001
2210850 mdrakib123 21:18:17 $0.0001 72.4413 >52.8999 2x +$0.0001
2210849 mdrakib123 21:18:15 $0.0001 45.0600 >52.8999 2x -$0.0001
2210848 mdrakib123 21:18:13 $0.0001 54.9135 >52.8999 2x +$0.0001
2210847 mdrakib123 21:18:12 $0.0001 55.8923 >52.8999 2x +$0.0001
2210846 mdrakib123 21:18:11 $0.0001 81.4964 >52.8999 2x +$0.0001
2210845 mdrakib123 21:18:10 $0.0001 02.6470 >52.8999 2x -$0.0001
2210844 mdrakib123 21:18:07 $0.0001 20.0332 >52.8999 2x -$0.0001
2210843 mdrakib123 21:18:04 $0.0001 73.2632 >52.8999 2x +$0.0001
2210842 mdrakib123 21:18:03 $0.0001 68.0674 >52.8999 2x +$0.0001
2210841 mdrakib123 21:18:02 $0.0001 72.6443 >52.8999 2x +$0.0001
2210840 mdrakib123 21:18:01 $0.0001 31.3785 >52.8999 2x -$0.0001
2210839 mdrakib123 21:17:59 $0.0001 37.6593 >52.8999 2x -$0.0001
2210838 mdrakib123 21:17:51 $0.0200 01.9285 >52.8999 2x -$0.0200
2210837 mdrakib123 21:17:49 $0.0200 35.0058 >52.8999 2x -$0.0200
2210836 mdrakib123 21:17:48 $0.0200 06.3884 >52.8999 2x -$0.0200
2210835 mdrakib123 21:17:43 $0.0001 32.9248 >52.8999 2x -$0.0001
2210834 mdrakib123 21:17:42 $0.0001 37.3235 >52.8999 2x -$0.0001
2210833 mdrakib123 21:17:40 $0.0001 73.8179 >52.8999 2x +$0.0001
2210832 mdrakib123 21:17:39 $0.0001 44.8051 >52.8999 2x -$0.0001
2210831 mdrakib123 21:17:38 $0.0001 53.6601 >52.8999 2x +$0.0001
2210830 mdrakib123 21:17:37 $0.0001 54.8505 >52.8999 2x +$0.0001
2210829 mdrakib123 21:17:36 $0.0001 17.6635 >52.8999 2x -$0.0001
2210828 mdrakib123 21:17:35 $0.0001 00.2148 >52.8999 2x -$0.0001
2210827 mdrakib123 21:17:34 $0.0001 23.8545 >52.8999 2x -$0.0001
2210826 mdrakib123 21:17:33 $0.0001 31.4292 >52.8999 2x -$0.0001
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

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