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Bet ID User Time Bet Lucky Target Payout Profit
2675382 Zane 07:27:06 $0.0000 07.7011 >52.8999 2x -$0.0000
2675381 Zane 07:27:04 $0.0000 15.8277 >52.8999 2x -$0.0000
2675380 Zane 07:27:03 $0.0000 63.4109 >52.8999 2x +$0.0000
2675379 Zane 07:27:02 $0.0000 81.2949 <47.1000 2x -$0.0000
2675378 Zane 07:27:00 $0.0000 81.2590 <47.1000 2x -$0.0000
2675377 Zane 07:26:57 $0.0000 23.2965 <47.1000 2x +$0.0000
2675376 Zane 07:26:44 $0.0000 07.6360 <47.1000 2x +$0.0000
2675375 Zane 07:26:42 $0.0000 06.8659 >52.8999 2x -$0.0000
2675374 Zane 07:26:40 $0.0000 93.0606 <47.1000 2x -$0.0000
2675373 Zane 07:26:38 $0.0000 25.2656 >52.8999 2x -$0.0000
2675372 Zane 07:26:36 $0.0000 85.5372 <47.1000 2x -$0.0000
2675371 Zane 07:26:33 $0.0000 60.0659 >52.8999 2x +$0.0000
2675370 Zane 07:26:31 $0.0000 96.0314 >52.8999 2x +$0.0000
2675369 Looserrrjdjd 09:10:28 $0.0098 00.6855 >52.8999 2x -$0.0098
2675368 Looserrrjdjd 09:10:24 $0.0010 00.0671 >52.8999 2x -$0.0010
2675367 Looserrrjdjd 09:10:11 $0.0054 93.5109 >52.8999 2x +$0.0054
2675366 Looserrrjdjd 09:08:55 $0.0001 86.7560 >52.8999 2x +$0.0001
2675365 Looserrrjdjd 09:08:54 $0.0001 79.5339 >52.8999 2x +$0.0001
2675364 Looserrrjdjd 09:08:53 $0.0001 02.1220 >52.8999 2x -$0.0001
2675363 Looserrrjdjd 09:08:52 $0.0001 78.4905 >52.8999 2x +$0.0001
2675362 Looserrrjdjd 09:08:50 $0.0001 67.2252 >52.8999 2x +$0.0001
2675361 Looserrrjdjd 09:08:46 $0.0064 61.9352 >52.8999 2x +$0.0064
2675360 Looserrrjdjd 09:08:44 $0.0016 49.9231 >52.8999 2x -$0.0016
2675359 Looserrrjdjd 09:08:42 $0.0004 20.4337 >52.8999 2x -$0.0004
2675358 Looserrrjdjd 09:08:40 $0.0001 46.4623 >52.8999 2x -$0.0001
2675357 Looserrrjdjd 09:08:36 $0.0004 56.6029 >52.8999 2x +$0.0004
2675356 Looserrrjdjd 09:08:31 $0.0001 21.9092 >52.8999 2x -$0.0001
2675355 Looserrrjdjd 09:06:51 $0.0512 45.4107 <47.1000 2x +$0.0512
2675354 Looserrrjdjd 09:06:50 $0.0256 18.5117 <47.1000 2x +$0.0256
2675353 Looserrrjdjd 09:06:49 $0.0256 74.7187 <47.1000 2x -$0.0256
2675352 Looserrrjdjd 09:06:48 $0.0256 96.4510 <47.1000 2x -$0.0256
2675351 Looserrrjdjd 09:06:46 $0.0128 36.3568 <47.1000 2x +$0.0128
2675350 Looserrrjdjd 09:06:45 $0.0128 56.7562 <47.1000 2x -$0.0128
2675349 Looserrrjdjd 09:06:44 $0.0128 65.9738 <47.1000 2x -$0.0128
2675348 Looserrrjdjd 09:06:43 $0.0128 93.4478 <47.1000 2x -$0.0128
2675347 Looserrrjdjd 09:06:41 $0.0032 65.8729 <47.1000 2x -$0.0032
2675346 Looserrrjdjd 09:06:40 $0.0032 89.8161 <47.1000 2x -$0.0032
2675345 Looserrrjdjd 09:06:39 $0.0032 67.9188 <47.1000 2x -$0.0032
2675344 Looserrrjdjd 09:06:38 $0.0032 95.6592 <47.1000 2x -$0.0032
2675343 Looserrrjdjd 09:06:36 $0.0016 41.9945 <47.1000 2x +$0.0016
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 Bets:
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  •      Total Wagered:
    $0.0000