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Bet ID User Time Bet Lucky Target Payout Profit
2674211 IgorD 11:43:39 $0.0000 09.9748 >09.9999 1.0467x -$0.0000
2674210 IgorD 11:43:36 $0.0000 84.4556 >09.9999 1.0467x +$0.0000
2674209 IgorD 11:43:21 $0.0000 92.1254 >09.9999 1.0467x +$0.0000
2674208 IgorD 11:43:18 $0.0000 24.2383 >09.9999 1.0467x +$0.0000
2674207 IgorD 11:43:17 $0.0000 51.9930 >09.9999 1.0467x +$0.0000
2674206 IgorD 11:43:09 $0.0000 50.9730 >09.9999 1.0467x +$0.0000
2674205 IgorD 11:42:51 $0.0000 91.8911 >09.9999 1.0467x +$0.0000
2674204 IgorD 11:42:49 $0.0000 70.1174 >09.9999 1.0467x +$0.0000
2674203 IgorD 11:42:47 $0.0000 44.5596 >09.9999 1.0467x +$0.0000
2674202 IgorD 11:42:46 $0.0000 07.9183 >09.9999 1.0467x -$0.0000
2674201 IgorD 11:42:25 $0.0000 57.4665 >09.9999 1.0467x +$0.0000
2674200 IgorD 11:42:24 $0.0000 34.0569 >09.9999 1.0467x +$0.0000
2674199 IgorD 11:42:15 $0.0000 10.9759 >09.9999 1.0467x +$0.0000
2674198 IgorD 11:42:13 $0.0000 12.0784 >09.9999 1.0467x +$0.0000
2674197 IgorD 11:41:38 $0.0000 11.3383 <90.0000 1.0467x +$0.0000
2674196 IgorD 11:41:36 $0.0000 12.6564 <90.0000 1.0467x +$0.0000
2674195 IgorD 11:41:34 $0.0000 50.1858 <90.0000 1.0467x +$0.0000
2674194 IgorD 11:41:33 $0.0000 31.4235 <90.0000 1.0467x +$0.0000
2674193 IgorD 11:40:49 $0.0000 02.2914 <90.0000 1.0467x +$0.0000
2674192 IgorD 11:40:47 $0.0000 93.9378 <90.0000 1.0467x -$0.0000
2674191 IgorD 11:40:45 $0.0000 23.5715 <90.0000 1.0467x +$0.0000
2674190 IgorD 11:40:43 $0.0000 65.7683 <90.0000 1.0467x +$0.0000
2674189 IgorD 11:40:11 $0.0000 08.3312 <90.0000 1.0467x +$0.0000
2674188 IgorD 11:40:09 $0.0000 45.7186 <90.0000 1.0467x +$0.0000
2674187 IgorD 11:40:03 $0.0000 62.8295 <90.0000 1.0467x +$0.0000
2674186 IgorD 11:40:02 $0.0000 12.4717 <90.0000 1.0467x +$0.0000
2674185 IgorD 11:39:31 $0.0000 40.0774 >09.9999 1.0467x +$0.0000
2674184 IgorD 11:39:30 $0.0000 07.1172 >09.9999 1.0467x -$0.0000
2674183 IgorD 11:39:28 $0.0000 60.4594 >09.9999 1.0467x +$0.0000
2674182 IgorD 11:39:25 $0.0000 50.4047 >09.9999 1.0467x +$0.0000
2674181 IgorD 11:39:03 $0.0000 00.6774 >09.9999 1.0467x -$0.0000
2674180 IgorD 11:39:01 $0.0000 19.1789 >09.9999 1.0467x +$0.0000
2674179 IgorD 11:38:59 $0.0000 17.6264 >09.9999 1.0467x +$0.0000
2674178 IgorD 11:38:57 $0.0000 32.7610 >09.9999 1.0467x +$0.0000
2674177 IgorD 11:38:30 $0.0000 57.3923 >09.9999 1.0467x +$0.0000
2674176 IgorD 11:38:17 $0.0000 02.2215 >09.9999 1.0467x -$0.0000
2674175 IgorD 11:37:55 $0.0000 09.7550 >09.9999 1.0467x -$0.0000
2674174 IgorD 11:37:39 $0.0000 06.8060 >09.9999 1.0467x -$0.0000
2674173 IgorD 11:37:07 $0.0000 74.1036 >09.9999 1.0467x +$0.0000
2674172 IgorD 11:37:05 $0.0000 36.6760 >09.9999 1.0467x +$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:
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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 Wagered:
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