BET AMOUNT
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Bet ID User Time Bet Lucky Target Payout Profit
2205274 pmcoin 11:10:39 $0.0100 52.1365 <47.1000 2x -$0.0100
2205273 barugoo222 12:34:11 $0.0000 15.4898 <47.1000 2x +$0.0000
2205272 barugoo222 12:34:10 $0.0000 63.2849 <47.1000 2x -$0.0000
2205271 barugoo222 12:33:44 $0.0000 42.9976 <47.1000 2x +$0.0000
2205270 barugoo222 12:33:28 $0.0000 30.2000 <47.1000 2x +$0.0000
2205269 barugoo222 12:33:27 $0.0000 67.7553 <47.1000 2x -$0.0000
2205268 barugoo222 12:33:20 $0.0000 08.2647 <47.1000 2x +$0.0000
2205267 barugoo222 12:33:01 $0.0000 21.2868 <47.1000 2x +$0.0000
2205266 barugoo222 12:32:38 $0.0000 11.0307 >52.8999 2x -$0.0000
2205265 barugoo222 12:32:35 $0.0000 52.8322 >52.8999 2x -$0.0000
2205264 Go7 23:16:35 $0.0000 39.8540 >52.8999 2x -$0.0000
2205263 Go7 23:16:19 $0.0000 70.2397 >52.8999 2x +$0.0000
2205262 Go7 23:15:12 $0.0000 56.1261 >52.8999 2x +$0.0000
2205261 Gamer99 10:05:03 $0.0004 20.6469 >52.8999 2x -$0.0004
2205260 Gamer99 10:04:55 $0.0002 32.8744 >52.8999 2x -$0.0002
2205259 Gamer99 10:04:53 $0.0004 92.0117 >52.8999 2x +$0.0004
2205258 Gamer99 10:04:52 $0.0002 54.4010 >52.8999 2x +$0.0002
2205257 Gamer99 10:04:48 $0.0001 07.2420 >52.8999 2x -$0.0001
2205256 Gamer99 10:04:43 $0.0016 99.2200 >52.8999 2x +$0.0016
2205255 Gamer99 10:04:42 $0.0008 24.4794 >52.8999 2x -$0.0008
2205254 Gamer99 10:04:39 $0.0004 33.4068 >52.8999 2x -$0.0004
2205253 Gamer99 10:04:34 $0.0002 40.3653 >52.8999 2x -$0.0002
2205252 Gamer99 10:04:32 $0.0001 45.5273 >52.8999 2x -$0.0001
2205251 Gamer99 10:04:29 $0.0002 54.8624 >52.8999 2x +$0.0002
2205250 Gamer99 10:04:26 $0.0001 07.6121 >52.8999 2x -$0.0001
2205249 Gamer99 10:04:26 $0.0001 91.5713 >52.8999 2x +$0.0001
2205248 Gamer99 10:04:24 $0.0001 60.8166 >52.8999 2x +$0.0001
2205247 Gamer99 10:04:11 $0.0032 89.4113 >52.8999 2x +$0.0032
2205246 Gamer99 10:04:07 $0.0016 26.2469 >52.8999 2x -$0.0016
2205245 Gamer99 10:04:04 $0.0008 21.4753 >52.8999 2x -$0.0008
2205244 Gamer99 10:03:54 $0.0001 24.2546 >52.8999 2x -$0.0001
2205243 Gamer99 10:03:48 $0.0016 79.7534 >52.8999 2x +$0.0016
2205242 Gamer99 10:03:44 $0.0008 35.1440 >52.8999 2x -$0.0008
2205241 Gamer99 10:03:38 $0.0016 99.7442 >52.8999 2x +$0.0016
2205240 Gamer99 10:03:34 $0.0008 40.5474 >52.8999 2x -$0.0008
2205239 Gamer99 10:03:31 $0.0008 21.9548 >52.8999 2x -$0.0008
2205238 Gamer99 10:03:30 $0.0008 74.2020 >52.8999 2x +$0.0008
2205237 Gamer99 10:03:25 $0.0008 18.2273 >52.8999 2x -$0.0008
2205236 Gamer99 10:03:12 $0.0008 46.1685 >21.4999 1.2x +$0.0001
2205235 Gamer99 10:03:11 $0.0008 53.4193 >21.4999 1.2x +$0.0001
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:
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Commission of Edge:
20%


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  • Total Bets:
    0
  •      Total Wagered:
    $0.0000