BITCOIN Gambling provably fair?

[JLF1980]

Hi

I posted few days ago I was new on forum and about to try bitcoin gambling sites as use betfair and the like and wanted to use my coins, im no tech guy and few things I don't understand and wondered if anyone can help

I used primodice abit and a few others but mainly stuck to dice games  like bitsinodice.com and another one called justdice and they state they are provably fair, how can I check that this is true?  pls bare in mind im no tech whizz and will need in layman's terms

cheers people 

[notlist3d]

There was one you could check with tool on their website.   Most you are taking their word... so stay with well known ones if you have to gamble.

Remember the house always wins.   No matter what the house will have the better odds.

[JLF1980]

read you could check a seed or something like that? on bitsinodice.com there is a code for server seed is that a way of checking?  if so does anyone know how I could?

although was up a little bit on bitsinodice.com so looks fair so far,  but would like to be able to check if what they all claim is to be true for myself before I continue much (do love a little gamble on my breaks) some of the others have provably fair sections with server data in also, just wouldn't know how to use that info

[DannyHamilton]

The first thing to understand is that "provably fair" does not mean that there is no "house edge".  It only means that it can be proven that the game follows the rules that are advertised.

Lets imagine a game where you place a bet and then roll a single perfectly balanced six sided die. In this game, you "win" when you roll a 1, 2, or 3. You "lose" when you roll a 4, 5, or 6.  On a losing roll, the casino keeps your entire bet.  On a winning roll, the casino allows you to keep your bet AND they pay you an additional sum that is 50% of what you bet.  In other words, if you bet $10 and lose, they casino keeps the full $10.  If you bet $10 and win, then you get your $10 back as well as an additional $5. These rules are published in the casino where anybody can access them.

If it could be proven that the die is truly perfectly balanced, and that the casino isn't doing anything to influence the outcome of the roll then you would have a "provably fair" game, even though the casino isn't paying enough on the "win" to make up for the equal number of "losses".

Assuming that you understand this, the "provably fair" games that most online casinos offer involve some mathematical or cryptographical way of proving that they did not influence whether you "win" or "lose" a bet.  The method of verifying depends on the casino, since they each have their own method.  It will generally require some technical knowledge about how to verify a hash value as well as some understanding about whether the source they are using for input can be relied on to be unpredictable and evenly distributed.

[JLF1980]

thanks danny,

my friend has tech knowledge and is going to show me how to verify the hash values on bitsinodice as a trial, I just like to know what im playing does what is advertises, I accept they will have a house edges, just don't want to be scammed as such buy a unfair randomiser or something