Provable fairness in Player vs Player (Be Cautious)

[Luxo42]

Here is solution.

User Satoshi generates random string (secret #1).
User Satoshi creates a game and sends hash of secret #1.
User Nakamoto generates random string (secret #2).
User Nakamoto joins the game and sends hash of secret #2.
Both players receives opponent's hash and sends its secrets.
Server calculates winner based on both secrets.

A player who has not sended his secret loses.

Also it may make sense to add an additional secret and hash from the server.

[1715480636]

1715480636

[1715480636]

1715480636

[Haunebu]

Thanks for the tip op. Majority of these PvP gambling sites are usually poker sites, but most of the players were bots and I was aware of that though I thought that the provably fair mechanism used by the site eased my worries. Looks like I was wrong.

These kinds of posts are very helpful yet most likely go unnoticed by beginners or newbies since they basically don't understand it. They may try to read it, but it is way too difficult to understand without the prior knowledge of some of the technicalities behind the logic.

Agreed. I had to read the solution proposed by op twice to fully understand it and I graduated with a CS degree. These threads definitely deserve more attention.

[Golftech]

The main problem in Player Vs Player online match is that you never know if the other player is the real player or it is someone from the gambling site pretending to be the player. In the latter case, if gambling site introduce a fake player, the advantage straight away goes to the online casino.

It's true. We will never know that your enemy in the match might be one of the site's team. In my point of view, player vs player game is enjoyable since your opponent is another player same as you but games like this have a catch as you have said. If it is a fake player then it's in favor of the site itself.

That's alarming indeed. What OP is exposing here is reality, it can't be denied that we ever knew who's on the other side, if that's a real player or another dummy from the site itself. the configurations that allows the house to be the winner will always favorable with the owner itself. There's should be a clear information like this in order to track if you are betting with someone and not with the dummy alone.