Provably Fair Slot Machines

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  • Provably Fair Slots 1. A Computer Model is used for the Slot Reels and a Random Spin is applied to each one. Each reel is modeled as a list of tiles in the order they appear as on the slot.
  • So now we know that provably fair slots are indeed fair and you cannot be cheated. But that does not mean that these slots are superior to others. Because there are also slot machines from large manufacturers like Netent that are played in a reliable casino like LeoVegas and are certainly fair – although not provably fair.

Provably Fair is a new technology that solves a real problem: how can I trust some strange online casino? How do I know that the outcome of a game was fair? Online casinos have been around for over two decades, but since the beginning players have had a problem trusting the casino. They must simply rely on the fact that a casino does not cheat.

Provably Fair technology changes that now. For the first time it is possible to verify every single spin on a slot machine. So you can check right away if an outcome was fair or not. The whole thing works quite easily if you spend a few minutes on the subject.

A Provably Fair Casino provides you with a token after the outcome of the game. This is a snippet of code in which everything is contained in the random event, so to speak. In a card game these are the cards as they appear in the deck and in slot machines these are the reels. After the game you can enter this token into a generator like Quickhash and see what result Quickhash comes to. If this result differs from the actual outcome of the game, it was not done by fair means. If the result is the same, you know that the online casino has not cheated you. The outcome of the game was fair. This does not mean that you won, of course, but that you were not cheated.

Provably Fair Slots and their RTPs

So now we know that provably fair slots are indeed fair and you cannot be cheated. But that does not mean that these slots are superior to others. Because there are also slot machines from large manufacturers like Netent that are played in a reliable casino like LeoVegas and are certainly fair – although not provably fair.

Just the fact that a slot machine is provably fair does not say anything about its quality, because what good is a slot machine with a bad RTP of 90% which is provably fair? Then you know that you can’t be cheated, but you can also play with a very bad payout. In this respect it is of no use to you.

Developers for provably Fair Slots

One thing is clear: provably fair slots must be developed from scratch. It is not possible to simply adapt existing slot machines and make them provably fair. That is why the range of slot machines is still manageable. There are only a few providers who are really working on it. These are summarized here and introduced to you.

Provably Fair Slot Machines

BGaming – this manufacturer develops both “normal” and provably fair slot machines. It has already published well over a dozen of them. The best known is the Bitstarz Casino where the BGaming slot machines can be played.

Funfair – this provider is regarded as one of the pioneers of Blockchain Gambling and has also created its own crypto currency. The number of slot machines is still manageable but it is growing slowly but surely.

RTPs and payouts of provably Fair Slots

Provably Fair: A Definition

One of the differences between your traditional online casino and one that accepts bitcoin is how they’re tested for fairness.

Non-bitcoin casinos are tested by companies like Technical Systems Testing. They run tests on the casino’s random number generator to see just how random the results are. So long as the games’ results are 100% random, they’re 100% fair.

Most bitcoin casinos don’t work like that. The exception is if they lease games through a software company, such as Softswiss or Coin Gaming. Instead they’re provably fair.

What the heck does provably fair mean? Google gives us a few definitions:

Provably Fair Slot Machines Machine

1) Provably fair meansthe player can prove the operator didn’t cheat.

2) Provably fair meansthe shuffle and order of the cards are verifiably random and also that they can’t be changed once the game has started.

3) Provably fair meansyou know exactly what you are dealing with before you start. Game payout odds are clearly displayed in the payout table.

The bottom line – you can use a string of numbers (called a hash) to ensure the casino is dealing you a fair game.

Need An Example?

Here’s an example of how a provably fair game works.

Say, for example, I give you a tough math problem to solve. I state that I already solved it.

But you’re not so sure. So you have me write the answer down, compute its hash and give you the hash value. The solution is (still) a secret.

When you come up with the answer yourself, you can hash it and compare it to the hash I gave you. If the two hashes match, you know I wasn’t lying. I had the answer all along.

Does that make sense? To explain this in another (more technical and realistic) way:

A hash function is created using a (very strong, all but unbreakable) SHA256 algorithm. The purpose of this function is to take data (the cards that will be dealt) and turn it into a string called a hash. The point of the SHA256 system is to:

  • Easily create hash values for any message.
  • Make it infeasible to generate a message with any given hash.
  • Make it infeasible to modify a message without changing the hash.
  • Make it infeasible to find two different messages with the same hash.

The first hash (SHA) is called the Initial Deck. It’s like when the dealer starts to shuffle a deck of cards before the start of a hand, but before they have you cut it.

Then there’s the Player Seed. This is populated with a random string of letters and numbers generated by your browser.

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What’s unique about the Player Seed is that you can edit it. You can enter anything you want here:

  • 12345678
  • SuckerPuNch
  • I<3Bitcoin

Enter it into the Player Seed field. Then hit deal, spin or play. The Player Seed will shuffle the deck again.

When the hand is over you’ll be shown the Initial Deck, Dealer Seed and Final Deck. You can verify the legitimacy of the hand by taking the Initial Deck and Dealer Seed, converting them to a hash, and making sure they match the SHA (Initial Deck). Then shuffle that with the Player Seed and your final result should match the Final Deck.

If you’re a visual learner like I am, that might confuse you. So the next best thing you can do is head over to Coin Royale, bitZino or SatoshiBet, and play their games and/or use their calculators. You’ll get to see how it works in real time.

Each site does this in a slightly different way. So you understand the basics work and know how to run a test. That way you can test sites before you sign up.

But I want to be very clear – just because a casino is ‘provably fair’ doesn’t mean it’s a legit and safe casino to join. It’s possible for a casino to deal you fair games, but then cheat you out of your money. For example, they don’t have to pay you your winnings. So bear in mind that testing for provably fairness is only one piece of the puzzle. It won’t replace common sense or doing your due diligence.

Want To Learn More?

Here are some links to websites that further explain provably fairness and have calculators for you to play with.

[1] You can use this page to verify the hashes for different casinos. http://bitcoincasinopro.com/provably-fair-verification/

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[2] This is a list of verified provably fair sites. https://bitcointalk.org/index.php?topic=481137.0