The Complete 2025 Guide to Provably Fair Gaming and Casinos

Easy Introduction to Provably Fair Gaming

If you’re a crypto casino player, you have probably already encountered blockchain-based provably fair games and casinos at some point. But, because it’s a relatively new field, you might not be familiar with exactly how they work. If that’s the case, this original CoinBets.com guide is for you.

We’ll explain everything you need to know about the provably fair games you’ll find at crypto casinos. We’ll show you exactly how they work, what the advantages and potential disadvantages are, and recommend some top provably fair casino sites.

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What is Provably Fair?

The term provably fair gaming is used in the online crypto gambling space. It refers to games that you, the player, can independently verify the fairness of.

The games are based on blockchain technology and are largely trustless. This means that, unlike traditional online slots and other RNG (Random Number Generator) based games, you don’t need to put your trust in the casino operator or their systems.

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Why it Matters in Crypto Gambling

Of course, fairness is critical for all online gambling. However, provably fair games are especially important in crypto gambling.

This is primarily due to the nature of crypto casinos. Because most major regulators don’t permit licensees to accept cryptocurrencies, they tend to be either licensed in Curaçao, or somewhere even more obscure, like Anjouan (Comoros). And, while this doesn’t necessarily mean they are dodgy, it does mean they aren’t subject to the same rigorous third-party audits and oversight as casinos licensed in top-tier jurisdictions like the UK, Malta, or the various US states.

Hence players at crypto casinos don’t benefit from so much player protection and need to be able to independently establish if they can trust a site. Indeed, when it comes to true blockchain-based casinos, their decentralized nature makes regulatory oversight almost impossible.

Likewise, the decentralized and pseudo-anonymous nature of many cryptocurrencies, means payments are final so players need to have faith in a platform before depositing. Offering provably fair games is an effective way of establishing this trust.

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How Provably Fair Algorithms Work

So, you’re probably wondering how provably fair games are, well, provably fair. Don’t worry, it’s not as complicated as you might think. Here’s a quick guide to the nuts and bolts.

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The Basics of Cryptographic Hash Functions

Before we look at provably fair games, it’s important to understand cryptographic hash functions in general.

A cryptographic hash function will take some input data, like a number or word, and then convert it to a fixed-length string of characters called a hash. Each hash is unique – any change to the input will result in a different hash.

You can think of a hash as a digital fingerprint for data.

Client and Server Seeds

Right, so let’s say you’re about to play a provably fair casino game. Before it starts, the game server will generate a random number, known as the server seed. The server seed will help predetermine the outcome of the subsequent game.

The server seed is then run through a cryptographic hash function, for example SHA-256, with the resulting hash then shared with the player. This hash cannot be changed and will act as part of the proof that the outcome of the game was predetermined and genuinely random.

This hash cannot be changed and will act as part of the proof that the outcome of the game was predetermined and genuinely random.

Client and Server Seeds

In addition to the server seed, the player (either manually or automatically via their device) will also generate a seed before the game. This is known as the client or player seed.

It is combined with the server seed to generate the exact outcome of the game. Because the final game result is predetermined by combining the two seeds, neither party can know the final result of the game beforehand.

The nonce – If you see a reference to a ‘nonce’ regarding provably fair gaming, don’t be alarmed, it’s not that kind of nonce (Brits will understand!). Rather, it’s a number, starting from 0 or 1, that changes with each bet to ensure rounds are unique. Think of it as a simple tally to keep track of rounds.

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Verifying Results

At most crypto casinos, you can easily verify the results of a provably fair game using an easy-to-use verification tool.

Most verification tools work like this:

1. Before playing, open the provably fair/fairness settings (usually a small scales symbol).
   
2. Copy and save the hashed server seed.
   
3. Copy and save the player/client seed.
   
4. Play the game as usual.
   
5. After the game, open the provably fair settings again, and select verification/verify results.
   
6. Paste in the hashed server seed and the client seed. Set the appropriate game details (game name, difficulty settings, nonce/round number), and tap verify.
   
7. The unhashed server seed will now be revealed and combined with the player seed, nonce, and other game details. The specific round will be re-run and the result should match the result you achieved when playing originally.

Benefits of Provably Fair Casinos

The main benefit of provably fair games is that they allow players to have a much higher degree of c

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Trust and Transparency

By using server and client seeds and cryptographic hash functions, provably fair games “lock in” predetermined results, while ensuring neither party has the information to see those results before the game has been played.

However, the exact process of every round is completely transparent after it has been run, and can be re-run and checked. Any attempt to manipulate results will result in mismatched hashes and game outcomes.

This trustless system is in stark contrast to traditional RNG-based casino games. Simply put, there’s no longer the need to put blind faith in casino operators, game suppliers, regulators, and test labs.

This trustless system is in stark contrast to traditional RNG-based casino games. Simply put, there’s no longer the need to put blind faith in casino operators, game suppliers, regulators, and test labs.

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Player Confidence

In effect, provably fair games give you the chance to audit a casino yourself. While you probably won’t want to go through the hassle of doing it after every game, you can do it whenever you want to.

Casino operators offering provably fair games know they could be player-audited at any time, so have no incentive to manipulate results. This allows players to have a high degree of confidence in the fairness of both the games and the casino.

In today’s highly competitive online gambling ecosystem, this can be extremely valuable, resulting in higher player retention and lower spending on acquisition.

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Types of Provably Fair Games

Any style of RNG-based game can be developed as a provably fair title. However, due to their relatively high development costs, simple, casual games are most common.

Let’s take a look at some of the most popular games on the market.

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Popular Provably Fair Games

Provably Fair Slots

Slot games dominate most online casinos, with some sites offering thousands of titles. However, only a small fraction of those are currently provably fair.

One of the first major iGaming software providers to launch provably slots was BGaming, which integrated it with popular slot games including Aztec Magic Deluxe, Lucky Lady Clover, and Mysterious Story of Avalon: Lost Kingdom.

Some crypto casinos have also launched their own in-house original provably fair slots. A good example is Luck.io with games like Gates of Zeus, Monkey Madness, and Wonka’s Factory.

Provably Fair Crash Games

At the time of writing, most provably fair games were based on the crash format. Pure crash games usually feature a vehicle, like a plane or rocket, that takes off and flies before randomly crashing. The longer it flies, the higher the multiplier gets – to win, you need to cash out before the crash.

Perhaps the best-known provably fair crash game of recent years is Aviator from Ukrainian iGaming developer Spribe. Many other similar crash games have since been released, including in-house casino originals like Crash by BC Originals and Crash by Stake.

Perhaps the best-known provably fair crash game of recent years is Aviator from Ukrainian iGaming developer Spribe.

Provably Fair Plinko

Another common type of provably fair game is plinko. The simple format of dropping balls through pegs and into pockets make these relatively easy to produce. Because of this, you’ll find most casino in-house original line-ups feature at least one plinko game.

Provably Fair Mines and Tower Games

From very basic minesweeper-style games, to more advanced titles like the Chicken Road series from InOut, mines and tower style provably fair games are common.

Provably Fair Dice Games

Since Satoshi Dice, the world’s first provably fair online casino game, launched in April 2012, the number of available titles has exploded (the SatoshiDice dApp is still available). Today, virtually every major crypto casino has introduced provably fair dice games – and some, like DuckDice, still only offer dice games.

Table Games

Most provably fair game line-ups also include at least a few takes on traditional table games. The most common are roulette and blackjack. Graphically, they are normally very simple – for example, the roulette wheel is often represented by a simple horizontal slider.

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Comparison with Traditional Games

Playing provably fair crypto casino games is pretty much the same as playing traditional games. Whether it’s slots, crash, dice, or table games, the user interface will look familiar. The main difference is that seed information will also be provided.

It’s important to note that there’s no obligation verify results when playing provably fair games. Here at CoinBets, we recommend you focus on enjoying a game, and just check every now and then – don’t develop OCD over it!

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Challenges and Limitations

So, we’ve looked at the advantages of provably fair systems, but it’s not all plain sailing – there are a few issues.

Complexity for New Users

First and foremost among these issues is accessibility. As we’ve explained, while provably fair systems aren’t really that complex, they can appear to be.

This is especially true for players who aren’t used to blockchain technology. But cryptographic hash functions and seeds can seem daunting even to people familiar with using cryptocurrencies.

However, like most things in crypto and Web3, the issue of complexity is gradually being addressed. As more mainstream game developers start embracing the technology, user interfaces are becoming simpler and more player-friendly.

Trust in the Code and Technology

Although provably fair games reduce the need for players to trust casino operators, they still need to be able to trust the underlying technology. Coding needs to be up to scratch. If there are bugs or hidden backdoors in the code, bad actors might be able to exploit them to manipulate outcomes.

One of the best ways to keep things secure is by employing open-source transparency. This allows a wide community of people with technical expertise to review code. They can then flag possible problems, and suggest improvements, reducing the risk of manipulation going unnoticed.

One of the best ways to keep things secure is by employing open-source transparency. This allows a wide community of people with technical expertise to review code.

Also, the random number generator (RNG) creating the server and client seeds needs to be genuinely random and unbiased. Even if the hashing and seeding processes are transparent, a dodgy RNG could still generate results that weren’t as random as they should be.

This is what is important for provably fair game developers to use well-established, cryptographically secured RNG algorithms.

Finally, another effective way to add extra security is to allow players to set or customize their seeds. This makes it much more difficult for a casino to manipulate an outcome. Fortunately, many crypto casinos now allow players to do this.

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Provably Fair Casinos to Watch

Today, there are so many crypto casinos offering provably fair games that the choice can seem overwhelming. To help make it easier, we’ve listed some of the most popular provably fair casinos below.

As always, recommend you carefully research any casino before making your first deposit. The best place to start is with CoinBets expert and user reviews.

Interesting Provably Fair Casinos

• Stake – The world’s biggest crypto casino and sportsbook, Stake offers an impressive range of in-house Stake Originals. Games include Mines, Dice, Plinko, Crash, Pump, Rock Paper Scissors, and Tome of Life.
  
• Roobet – Another hugely popular crypto casino, Roobet offers a similar range of in-house originals as Stake. However there are also some novel games like Snoop’s Hotbox – a very interesting take on the crash concept!
  
• Gamdom – Complementing its regular slots and table games, Gamdom has a modest range of in-house provably fair originals. Interestingly, this casino provides access to the full game logic, rather than just the RNG-element.
  
• Luck.io – This casino only offers provably fair games. The choice isn’t huge, but all are in-house originals, and unusually, many are slots.
  
• BCH.Games – A small casino built around Bitcoin Cash, but again all games here are provably fair. You’ll find the usual lineup of Plinko, Dice, Tower, Hilo, and Crash, plus Target and Jackpot.

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What to Look for in a Provably Fair Casino

With so many provably fair casinos out there, deciding where to play will come down to personal taste. But, there are some things you can look for to ensure you enjoy great, hassle-free entertainment.

1. License – Most crypto casinos are licensed in Curaçao or Anjouan, though new jurisdictions like Tobique and St Kitts are also starting to issue licenses. Out of these, Curaçao now provides the highest levels of player protection, including responsible gambling tools.
   
2. Games and providers – In addition to in-house original games, look for titles from third-party provably fair providers like Turbo Games, Spribe, and InOut.
   
3. Provably fair resources – The best crypto casinos will make finding seeds and verifying results easy and straightforward. Look for a Fairness tab in games and make sure there’s a convenient verification tool.
   
4. Payment options – Most crypto casinos accept the biggest cryptos like BTC, ETH, USDT and DOGE, the best will support a much broader range. For example, look for memecoins and privacy coins.
   
5. Bonuses – You’ll usually find a large welcome bonus and multiple smaller ones for existing players. Make sure the terms and conditions are available, clear, and fair. Likewise, any loyalty scheme or VIP club should be transparent and fair.
   
6. Reviews – Before depositing at any crypto casino, do your homework. Read player and professional reviews – you can start here at CoinBets. But keep in mind, most other review platforms are run by affiliates with financial incentives to promote casinos.

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Trends in Blockchain and Fairness

Although blockchain-based provably fair games and crypto casinos have now been around for more than a decade, it’s important to put things in perspective. Most new technologies are around for quite a long time before going mainstream.

Consider that series-produced cars were available to buy in the late 1890s, but it wasn’t until the 1920s and 30s that they became commonplace in America, and even later elsewhere. Likewise, the early form of the internet was available in the 1980s, but it wasn’t until the start of the 21st century that most households went online.

We are seeing a similar phenomenon with blockchain and crypto technology. Bitcoin may have been launched way back in 2009, but for most of the population, blockchain technology is still a new thing. So, we’re only really in the early stages of the blockchain revolution.

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The Web Decentralizes

As the digital world transitions from the centralized Web2 to the decentralized Web3, trustless systems based on smart contracts will become commonplace.

From browser- based crypto wallets and DeFi (decentralized finance) services, to tokenization and provably fair games at casinos – the future is trustless. And open-source development, centered around stakeholder communities, will continue to lay the foundations for more exciting provably fair innovations.

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Will Provably Fair Go Mainstream?

Any casino that wants to remain relevant will need to embrace provably fair gaming at some point. After all, crypto casinos like Stake and Roobet have already proven there’s a significant public demand for provably fair games.

Of course, they’ve also demonstrated that the technology builds trust, improving player retention and profitability. And, as mainstream game providers begin to integrate provably fair blockchain technology into their offerings, the choice will be a no-brainer from a business perspective.

And, as mainstream game providers begin to integrate provably fair blockchain technology into their offerings, the choice will be a no-brainer from a business perspective.

However, mass adoption of provably fair games will likely come when more gaming regulators, like those in the UK, Malta, New Jersey, Pennsylvania, Ontario, the Netherlands, and Sweden, finally enable their licensees to accept cryptocurrencies.

But at some point, that regulatory dam will break, and crypto casinos – together with provably fair games – will explode in popularity.

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