Despite they claim they are "provably fair", according to their number generation algorithm they are not. Fair sites like PD or JD uses nonce based number generation algorithm like this:
Your client_seed: "iamlucky"
Your server_seed: "randomserverseed"
Your current nonce: 1 (increases every bet until you change your seeds)
Rolled number = roll(client_seed, server_seed, nonce)
Above approach guarantees that every number is generated with your own seeds you know that the next nonce is 2, 3. It's known before and after the bet. And then when you reveal your server seed, you can check the fairness of rolled number. (Casino can still cheat you by skipping nonce's, like the DiceBitco.in did)
Rollin.io is not using this approach. Here theirs:
Your client_seed: "iamlucky"
Your server_seed: "randomserverseed"
You random_seed for bet: "randomstringgivenbyserver" (instead of nonce)
Rolled number = roll(client_seed, server_seed, random_seed)
That random_seed is calculated
when you bet. This is possible they have a code block like this in server:
var rolled = roll(...)
if(win && amount > 1 BTC) {
rolled = rollAgain(...)
}
Rollin.io can easily manipulate the random_seed whenever they want. It's "fair" but not "provable fair". Think twice before betting in Rollin.io.
Example bet:
https://rollin.io/dice/history/4261348079Please correct me if I'm wrong.
Edit:
You really dorollin.io is really a fair site, this has been recognized through the process of using, this is the first time I saw a negative article about this site. Everything appears with random probabilities as many have considered before, no reason for your rating to be received. Perhaps your bad luck has cost you all the money and makes you angry. Please consider again. I believe you understand what I mean.
I am not playing in dice games, at least not in Rollin.io. I was just checking their site.
Thanks
NLNico for correcting me. I totally miss that information whlie sleepy.