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Bet ID User Time Bet Lucky Target Payout Profit
2207744 asadi 06:54:16 $0.0013 21.7094 >52.8999 2x -$0.0013
2207743 asadi 06:54:11 $0.0128 17.6684 >52.8999 2x -$0.0128
2207742 asadi 06:54:09 $0.0016 11.5673 >52.8999 2x -$0.0016
2207741 asadi 06:54:08 $0.0008 61.6069 >52.8999 2x +$0.0008
2207740 asadi 06:54:06 $0.0008 35.0400 >52.8999 2x -$0.0008
2207739 asadi 06:54:05 $0.0064 32.3616 >52.8999 2x -$0.0064
2207738 asadi 06:54:01 $0.0004 30.2962 >52.8999 2x -$0.0004
2207737 asadi 06:53:53 $0.0001 44.3867 >52.8999 2x -$0.0001
2207736 asadi 06:53:49 $0.0001 27.3695 <47.1000 2x +$0.0001
2207735 asadi 06:53:49 $0.0016 39.0224 <47.1000 2x +$0.0016
2207734 asadi 06:53:45 $0.0032 63.6842 >52.8999 2x +$0.0032
2207733 asadi 06:53:41 $0.0016 22.5113 >52.8999 2x -$0.0016
2207732 asadi 06:53:39 $0.0008 18.1682 >52.8999 2x -$0.0008
2207731 asadi 06:53:33 $0.0004 34.8653 >52.8999 2x -$0.0004
2207730 asadi 06:53:32 $0.0064 66.2519 >52.8999 2x +$0.0064
2207729 asadi 06:53:25 $0.0001 39.8173 >52.8999 2x -$0.0001
2207728 asadi 06:53:21 $0.0001 80.5565 >52.8999 2x +$0.0001
2207727 asadi 06:53:20 $0.0002 97.5927 >52.8999 2x +$0.0002
2207726 asadi 06:53:13 $0.0001 39.8538 >52.8999 2x -$0.0001
2207725 asadi 06:53:11 $0.0001 98.3676 >52.8999 2x +$0.0001
2207724 asadi 06:53:09 $0.0001 34.0234 >52.8999 2x -$0.0001
2207723 asadi 06:53:06 $0.0008 98.8364 >52.8999 2x +$0.0008
2207722 asadi 06:53:05 $0.0002 51.9393 >52.8999 2x -$0.0002
2207721 asadi 06:53:04 $0.0016 16.1588 >52.8999 2x -$0.0016
2207720 asadi 06:53:01 $0.0001 09.5809 >52.8999 2x -$0.0001
2207719 asadi 06:52:55 $0.0001 91.7542 >52.8999 2x +$0.0001
2207718 asadi 06:52:49 $0.0064 62.2700 >52.8999 2x +$0.0064
2207717 asadi 06:52:45 $0.0004 45.2842 >52.8999 2x -$0.0004
2207716 asadi 06:52:45 $0.0002 64.0532 >52.8999 2x +$0.0002
2207715 asadi 06:52:37 $0.0001 18.5928 >52.8999 2x -$0.0001
2207714 asadi 06:52:36 $0.0001 69.2742 >52.8999 2x +$0.0001
2207713 asadi 06:52:30 $0.0032 89.3372 >52.8999 2x +$0.0032
2207712 asadi 06:52:29 $0.0256 41.2329 >52.8999 2x -$0.0256
2207711 asadi 06:52:25 $0.0016 64.4036 <47.1000 2x -$0.0016
2207710 asadi 06:52:21 $0.0008 78.5938 <47.1000 2x -$0.0008
2207709 asadi 06:52:20 $0.0128 26.2423 <47.1000 2x +$0.0128
2207708 asadi 06:52:19 $0.0128 70.9685 <47.1000 2x -$0.0128
2207707 asadi 06:52:17 $0.0004 86.2993 <47.1000 2x -$0.0004
2207706 asadi 06:52:13 $0.0002 57.6420 <47.1000 2x -$0.0002
2207705 asadi 06:52:11 $0.0064 93.9723 <47.1000 2x -$0.0064
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:
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