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Bet ID User Time Bet Lucky Target Payout Profit
2212790 Riyadh Zinnath 12:19:11 $0.0000 22.4814 >52.8999 2x -$0.0000
2212789 mdrakib112 20:02:16 $0.0001 12.9352 >52.8999 2x -$0.0001
2212788 mdrakib112 20:02:13 $0.0001 25.0036 >52.8999 2x -$0.0001
2212787 mdrakib112 20:02:11 $0.0001 20.3405 >52.8999 2x -$0.0001
2212786 mdrakib112 20:02:10 $0.0001 34.9764 >52.8999 2x -$0.0001
2212785 mdrakib112 20:02:09 $0.0001 10.9918 >52.8999 2x -$0.0001
2212784 mdrakib112 20:02:08 $0.0001 70.9829 >52.8999 2x +$0.0001
2212783 mdrakib112 20:02:07 $0.0001 50.0478 >52.8999 2x -$0.0001
2212782 mdrakib112 20:02:06 $0.0001 51.8456 >52.8999 2x -$0.0001
2212781 mdrakib112 20:02:04 $0.0001 52.2465 >52.8999 2x -$0.0001
2212780 mdrakib112 20:02:02 $0.0001 94.4112 >52.8999 2x +$0.0001
2212779 mdrakib112 20:02:01 $0.0001 50.9876 >52.8999 2x -$0.0001
2212778 mdrakib112 20:01:59 $0.0001 23.2188 >52.8999 2x -$0.0001
2212777 mdrakib112 20:01:57 $0.0001 11.7299 >52.8999 2x -$0.0001
2212776 mdrakib112 09:11:49 $0.0016 12.3964 >52.8999 2x -$0.0016
2212775 mdrakib112 09:11:47 $0.0008 46.9526 >52.8999 2x -$0.0008
2212774 mdrakib112 09:11:42 $0.0064 44.8722 >52.8999 2x -$0.0064
2212773 mdrakib112 09:11:41 $0.0064 43.3458 >52.8999 2x -$0.0064
2212772 mdrakib112 09:11:40 $0.0064 33.7681 >52.8999 2x -$0.0064
2212771 mdrakib112 09:11:39 $0.0064 53.7582 >52.8999 2x +$0.0064
2212770 mdrakib112 09:11:38 $0.0064 45.7477 >52.8999 2x -$0.0064
2212769 mdrakib112 09:11:37 $0.0064 93.5196 >52.8999 2x +$0.0064
2212768 mdrakib112 09:11:36 $0.0064 20.7130 >52.8999 2x -$0.0064
2212767 mdrakib112 09:11:35 $0.0064 17.2685 >52.8999 2x -$0.0064
2212766 mdrakib112 09:11:34 $0.0064 62.8765 >52.8999 2x +$0.0064
2212765 mdrakib112 09:11:32 $0.0064 43.8086 >52.8999 2x -$0.0064
2212764 mdrakib112 09:11:30 $0.0032 25.1934 >52.8999 2x -$0.0032
2212763 mdrakib112 09:11:29 $0.0032 49.6550 >52.8999 2x -$0.0032
2212762 mdrakib112 09:11:28 $0.0032 12.6075 >52.8999 2x -$0.0032
2212761 mdrakib112 09:11:27 $0.0032 59.1939 >52.8999 2x +$0.0032
2212760 mdrakib112 09:11:25 $0.0016 33.8357 >52.8999 2x -$0.0016
2212759 mdrakib112 09:11:23 $0.0008 14.5243 >52.8999 2x -$0.0008
2212758 mdrakib112 09:11:22 $0.0002 23.2689 >52.8999 2x -$0.0002
2212757 mdrakib112 09:11:20 $0.0001 18.1635 >52.8999 2x -$0.0001
2212756 mdrakib112 09:11:18 $0.0001 21.0943 >52.8999 2x -$0.0001
2212755 mdrakib112 09:11:15 $0.0001 86.7491 >52.8999 2x +$0.0001
2212754 mdrakib112 09:11:14 $0.0001 94.1321 >52.8999 2x +$0.0001
2212753 mdrakib112 09:11:13 $0.0001 10.7260 >52.8999 2x -$0.0001
2212752 mdrakib112 09:11:12 $0.0001 00.2878 >52.8999 2x -$0.0001
2212751 mdrakib112 09:11:11 $0.0001 71.4641 >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));


AFFILIATE

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Your Affiliate Statistics

Available Commission:
0.0000 USD
Total Paid:
0.0000 USD
Depositors:
0
Non-depositors:
0
Commission of Edge:
20%


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  • Total Bets:
    0
  •      Total Wagered:
    $0.0000