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Bet ID User Time Bet Lucky Target Payout Profit
2204670 aghdas11 11:47:51 $0.4800 93.2231 <47.1000 2x -$0.4800
2204669 aghdas11 11:47:48 $0.2400 65.8096 <47.1000 2x -$0.2400
2204668 aghdas11 11:47:45 $0.1200 91.8791 <47.1000 2x -$0.1200
2204667 aghdas11 11:47:40 $0.1200 81.6629 <47.1000 2x -$0.1200
2204666 aghdas11 11:47:36 $0.1200 72.1678 <47.1000 2x -$0.1200
2204665 aghdas11 11:47:32 $0.0600 55.5195 <47.1000 2x -$0.0600
2204664 aghdas11 11:47:20 $0.0800 33.6160 <47.1000 2x +$0.0800
2204663 aghdas11 11:47:17 $0.0400 05.8839 <47.1000 2x +$0.0400
2204662 aghdas11 11:47:11 $0.0200 86.7528 >52.8999 2x +$0.0200
2204661 aghdas11 11:46:34 $0.0000 79.9809 >52.8999 2x +$0.0000
2204660 aghdas11 11:46:32 $0.0000 42.6598 >52.8999 2x -$0.0000
2204659 aghdas11 11:46:25 $0.0030 10.7895 >52.8999 2x -$0.0030
2204658 aghdas11 11:46:22 $0.1000 17.3760 >52.8999 2x -$0.1000
2204657 aghdas11 11:46:18 $0.0500 14.0753 >52.8999 2x -$0.0500
2204656 aghdas11 11:46:14 $0.0500 52.7996 >52.8999 2x -$0.0500
2204655 aghdas11 11:46:03 $0.0050 35.4158 >52.8999 2x -$0.0050
2204654 aghdas11 11:45:59 $0.0100 89.9675 >52.8999 2x +$0.0100
2204653 aghdas11 11:45:51 $0.0010 10.4078 >52.8999 2x -$0.0010
2204652 aghdas11 11:45:49 $0.0010 33.9815 >52.8999 2x -$0.0010
2204651 aghdas11 05:29:09 $0.4256 39.1156 >52.8999 2x -$0.4256
2204650 aghdas11 05:29:06 $0.2128 64.0510 >52.8999 2x +$0.2128
2204649 aghdas11 05:29:04 $0.1436 31.4218 >52.8999 2x -$0.1436
2204648 aghdas11 05:29:01 $0.0718 21.5626 >52.8999 2x -$0.0718
2204647 aghdas11 05:28:58 $0.1436 00.2263 >52.8999 2x -$0.1436
2204646 aghdas11 05:28:52 $0.0000 96.0990 >52.8999 2x +$0.0000
2204645 aghdas11 05:28:43 $0.2859 79.4372 >52.8999 2x +$0.2859
2204644 aghdas11 05:28:39 $0.1430 74.2557 >52.8999 2x +$0.1430
2204643 aghdas11 05:28:14 $0.0740 26.1598 >52.8999 2x -$0.0740
2204642 aghdas11 05:28:12 $0.0012 28.9667 >52.8999 2x -$0.0012
2204641 aghdas11 05:28:11 $0.0390 50.9133 >52.8999 2x -$0.0390
2204640 aghdas11 05:28:10 $0.3040 05.2539 >52.8999 2x -$0.3040
2204639 aghdas11 05:28:08 $0.0190 19.3131 >52.8999 2x -$0.0190
2204638 aghdas11 05:28:07 $0.0320 44.1331 >52.8999 2x -$0.0320
2204637 aghdas11 05:28:05 $0.0060 03.5924 >52.8999 2x -$0.0060
2204636 aghdas11 05:28:03 $0.0015 17.7668 >52.8999 2x -$0.0015
2204635 aghdas11 05:28:02 $0.0030 95.6100 >52.8999 2x +$0.0030
2204634 aghdas11 05:28:01 $0.0780 73.5884 >52.8999 2x +$0.0780
2204633 aghdas11 05:27:59 $0.0390 49.5242 >52.8999 2x -$0.0390
2204632 aghdas11 05:27:54 $0.0640 36.8641 >52.8999 2x -$0.0640
2204631 aghdas11 05:27:53 $0.0080 80.6047 >52.8999 2x +$0.0080
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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Non-depositors:
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Commission of Edge:
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  • Total Bets:
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  •      Total Wagered:
    $0.0000