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Bet ID User Time Bet Lucky Target Payout Profit
2418337 Car 12:34:05 $0.0700 80.4802 >24.6399 1.25x +$0.0175
2418336 Car 12:32:18 $0.0700 28.8448 <47.1000 2x +$0.0700
2418335 Car 12:32:15 $0.0700 54.3078 >52.8999 2x +$0.0700
2418334 Car 12:32:13 $0.2800 79.4321 >52.8999 2x +$0.2800
2418333 Car 12:32:07 $0.1400 08.2124 >52.8999 2x -$0.1400
2418332 Car 12:32:06 $0.0700 03.0183 >52.8999 2x -$0.0700
2418331 Car 12:32:02 $0.5600 29.5279 <47.1000 2x +$0.5600
2418330 Car 12:32:01 $0.2800 18.6613 >52.8999 2x -$0.2800
2418329 Car 12:32:00 $0.1400 21.9639 >52.8999 2x -$0.1400
2418328 Car 12:31:59 $0.0700 26.8891 >52.8999 2x -$0.0700
2418327 Car 12:31:57 $0.1400 76.9978 >52.8999 2x +$0.1400
2418326 Car 12:31:56 $0.0700 26.8192 >52.8999 2x -$0.0700
2418325 Car 12:31:52 $0.5600 43.8391 <47.1000 2x +$0.5600
2418324 Car 12:31:50 $0.2800 44.6604 >52.8999 2x -$0.2800
2418323 Car 12:31:49 $0.1400 29.8061 >52.8999 2x -$0.1400
2418322 Car 12:31:48 $0.0700 78.4145 <47.1000 2x -$0.0700
2418321 Car 12:31:45 $1.1200 42.8702 <47.1000 2x +$1.1200
2418320 Car 12:31:44 $0.5600 97.1169 <47.1000 2x -$0.5600
2418319 Car 12:31:42 $0.2800 93.1820 <47.1000 2x -$0.2800
2418318 Car 12:31:41 $0.1400 84.3242 <47.1000 2x -$0.1400
2418317 Car 12:31:39 $0.0700 07.9715 >52.8999 2x -$0.0700
2418316 Car 12:31:37 $0.2800 62.7101 >52.8999 2x +$0.2800
2418315 Car 12:31:36 $0.1400 35.7436 >52.8999 2x -$0.1400
2418314 Car 12:31:34 $0.0700 25.2236 >52.8999 2x -$0.0700
2418313 Car 12:31:32 $0.1400 44.8584 <47.1000 2x +$0.1400
2418312 Car 12:31:30 $0.0700 86.3264 <47.1000 2x -$0.0700
2418311 Car 12:20:20 $0.2800 42.0271 <47.1000 2x +$0.2800
2418310 Car 12:20:19 $0.1400 73.3458 <47.1000 2x -$0.1400
2418309 Car 12:20:18 $0.0700 79.9000 <47.1000 2x -$0.0700
2418308 Car 12:20:14 $1.1200 30.0860 <47.1000 2x +$1.1200
2418307 Car 12:20:13 $0.5600 75.3234 <47.1000 2x -$0.5600
2418306 Car 12:20:09 $0.2800 74.0850 <47.1000 2x -$0.2800
2418305 Car 12:20:08 $0.1400 60.0770 <47.1000 2x -$0.1400
2418304 Car 12:20:07 $0.0700 80.0075 <47.1000 2x -$0.0700
2418303 Car 12:20:05 $0.1400 91.1439 >52.8999 2x +$0.1400
2418302 Car 12:20:03 $0.0700 44.4655 >52.8999 2x -$0.0700
2418301 Car 12:20:02 $0.0700 90.7865 >52.8999 2x +$0.0700
2418300 Car 12:20:00 $0.0700 67.6551 >52.8999 2x +$0.0700
2418299 Car 12:19:53 $1.1200 77.8840 >52.8999 2x +$1.1200
2418298 Car 12:19:51 $0.5600 43.6216 >52.8999 2x -$0.5600
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:
0.0000 USD
Depositors:
0
Non-depositors:
0
Commission of Edge:
20%


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  • Total Bets:
    0
  •      Total Wagered:
    $0.0000