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Bet ID User Time Bet Lucky Target Payout Profit
2656374 gift7 10:49:15 $0.0000 59.5610 >90.5799 10x -$0.0000
2656373 gift7 10:49:13 $0.0000 38.6306 >90.5799 10x -$0.0000
2656372 gift7 10:49:06 $0.0000 07.9554 >90.5799 10x -$0.0000
2656371 gift7 10:49:00 $0.1797 86.1562 >90.5799 10x -$0.1797
2656370 gift7 10:48:52 $0.0599 98.0817 >68.5999 3x +$0.1198
2656369 gift7 10:48:37 $0.5760 00.7134 >68.5999 3x -$0.5760
2656368 gift7 10:48:32 $1.1520 12.1510 >68.5999 3x -$1.1520
2656367 gift7 10:48:29 $1.1520 37.3121 >68.5999 3x -$1.1520
2656366 gift7 10:48:27 $0.5760 43.3126 >68.5999 3x -$0.5760
2656365 gift7 10:48:26 $0.2880 53.3521 >68.5999 3x -$0.2880
2656364 gift7 10:48:24 $0.1440 00.6461 >68.5999 3x -$0.1440
2656363 gift7 10:48:23 $0.0720 29.6790 >68.5999 3x -$0.0720
2656362 gift7 10:48:22 $0.0360 35.6393 >68.5999 3x -$0.0360
2656361 gift7 10:48:20 $0.0180 26.2072 >68.5999 3x -$0.0180
2656360 gift7 10:47:58 $0.0160 23.3789 <75.3600 1.25x +$0.0040
2656359 gift7 10:47:56 $0.0160 43.3818 <75.3600 1.25x +$0.0040
2656358 gift7 10:47:54 $0.0160 49.9056 >24.6399 1.25x +$0.0040
2656357 gift7 10:47:50 $0.0160 53.9388 >24.6399 1.25x +$0.0040
2656356 gift7 10:47:45 $0.0000 50.9007 <75.3600 1.25x +$0.0000
2656355 gift7 10:47:43 $0.0000 88.0115 >24.6399 1.25x +$0.0000
2656354 gift7 10:47:42 $0.0000 41.5762 <75.3600 1.25x +$0.0000
2656353 gift7 10:47:41 $0.0000 31.2400 >24.6399 1.25x +$0.0000
2656352 gift7 10:47:39 $0.0000 83.2282 <75.3600 1.25x -$0.0000
2656351 gift7 10:47:38 $0.0000 26.6204 >24.6399 1.25x +$0.0000
2656350 gift7 10:47:37 $0.0000 23.0371 >24.6399 1.25x -$0.0000
2656349 gift7 10:47:36 $0.0000 27.0672 >24.6399 1.25x +$0.0000
2656348 gift7 10:47:34 $0.0000 35.1972 <75.3600 1.25x +$0.0000
2656347 gift7 10:47:33 $0.0000 89.6639 <75.3600 1.25x -$0.0000
2656346 gift7 10:47:32 $0.0000 23.5138 <75.3600 1.25x +$0.0000
2656345 gift7 10:47:30 $0.0000 61.9482 >24.6399 1.25x +$0.0000
2656344 gift7 10:47:29 $0.0000 26.7148 <75.3600 1.25x +$0.0000
2656343 gift7 10:47:28 $0.0000 86.9889 <75.3600 1.25x -$0.0000
2656342 gift7 10:47:18 $0.0160 04.1459 <75.3600 1.25x +$0.0040
2656341 gift7 10:47:15 $0.0160 65.3873 <75.3600 1.25x +$0.0040
2656340 gift7 10:47:01 $0.0000 39.7864 <75.3600 1.25x +$0.0000
2656339 gift7 10:47:00 $0.0000 70.1881 >24.6399 1.25x +$0.0000
2656338 gift7 10:46:43 $0.0140 92.6620 >24.6399 1.25x +$0.0035
2656337 gift7 10:46:40 $0.0140 49.5834 <75.3600 1.25x +$0.0035
2656336 gift7 10:46:38 $0.0140 11.1575 <75.3600 1.25x +$0.0035
2656335 gift7 10:46:34 $0.0140 75.5014 >24.6399 1.25x +$0.0035
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:
    0
  •      Total Wagered:
    $0.0000