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Bet ID User Time Bet Lucky Target Payout Profit
2196745 Ir08 12:14:43 $4.0000 48.8087 >52.8999 2x -$4.0000
2196744 Ant45 11:25:50 $5.0000 58.0090 >52.8999 2x +$5.0000
2196743 Anas 10:16:56 $3.0000 69.4716 >52.8999 2x +$3.0000
2196742 ANT05 11:11:07 $2.0000 38.1945 >52.8999 2x -$2.0000
2196741 ANT05 11:10:49 $0.0000 60.5230 >52.8999 2x +$0.0000
2196740 ANT05 11:10:47 $0.0000 32.4414 >52.8999 2x -$0.0000
2196739 ANT05 11:10:46 $0.0000 44.6396 >52.8999 2x -$0.0000
2196738 ANT05 11:10:44 $0.0000 29.9771 >52.8999 2x -$0.0000
2196737 ANT05 11:10:39 $0.0000 82.2866 >52.8999 2x +$0.0000
2196736 Avinash 00:41:53 $0.0000 99.0184 >52.8999 2x +$0.0000
2196735 9iuiii 14:21:52 $0.0000 41.5894 >52.8999 2x -$0.0000
2196734 ANTON45 05:32:42 $0.5000 31.7587 >52.8999 2x -$0.5000
2196733 ANTON45 05:32:34 $0.5000 92.0298 >52.8999 2x +$0.5000
2196732 ANTON45 05:32:25 $0.5000 97.1539 >52.8999 2x +$0.5000
2196731 ANTON45 05:32:04 $2.0000 39.1151 >52.8999 2x -$2.0000
2196730 ANTON45 05:31:52 $1.0000 33.2831 >52.8999 2x -$1.0000
2196729 ANTON45 05:29:38 $0.5000 33.8578 >52.8999 2x -$0.5000
2196728 ANTON45 05:29:21 $1.0000 74.3183 >52.8999 2x +$1.0000
2196727 ANTON45 05:29:08 $0.5000 33.2825 >52.8999 2x -$0.5000
2196726 ANTON45 05:28:50 $0.5000 53.2202 >52.8999 2x +$0.5000
2196725 dfsgfg 10:17:34 $0.0000 85.6410 >52.8999 2x +$0.0000
2196724 dfsgfg 10:17:33 $0.0000 64.8405 >52.8999 2x +$0.0000
2196723 dfsgfg 10:17:32 $0.0000 43.2227 >52.8999 2x -$0.0000
2196722 dfsgfg 10:17:30 $0.0000 99.0920 >52.8999 2x +$0.0000
2196721 dfsgfg 10:17:29 $0.0000 97.5061 >52.8999 2x +$0.0000
2196720 dfsgfg 10:17:27 $0.0000 41.7229 >52.8999 2x -$0.0000
2196719 dfsgfg 10:17:26 $0.0000 44.4428 >52.8999 2x -$0.0000
2196718 An21 09:59:14 $1.0000 04.3445 >52.8999 2x -$1.0000
2196717 An21 09:59:00 $3.0000 13.3423 >52.8999 2x -$3.0000
2196716 An21 09:58:40 $2.0000 27.8705 >52.8999 2x -$2.0000
2196715 An21 09:58:24 $1.0000 06.6422 >52.8999 2x -$1.0000
2196714 An21 09:58:13 $1.0000 66.6346 >52.8999 2x +$1.0000
2196713 An21 09:57:59 $2.0000 90.0273 >52.8999 2x +$2.0000
2196712 An21 09:57:45 $1.0000 28.3152 >52.8999 2x -$1.0000
2196711 Mjunior 16:06:32 $0.0000 00.7082 >52.8999 2x -$0.0000
2196710 Mjunior 16:06:24 $0.0000 37.1668 >52.8999 2x -$0.0000
2196709 Mjunior 16:06:06 $0.0000 61.0399 >52.8999 2x +$0.0000
2196708 sansaman 01:32:55 $0.0000 34.1904 >52.8999 2x -$0.0000
2196707 sansaman 01:32:54 $0.0000 10.5659 >52.8999 2x -$0.0000
2196706 sansaman 01:32:44 $0.0000 92.9515 >52.8999 2x +$0.0000
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:
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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