Provably fair - a perfect solution for crypto casinos (2025)

Online gambling has always come with one big question: how do you know the games are fair? Traditional online casinos have relied on trust - using games created by licensed software providers, tested and audited by third-party regulators. In this setup, the casino itself cannot alter the game results, which brings a certain level of security. However, for the average player, the process is still a black box - there’s no easy way to personally verify that each spin, roll, or card draw was truly random.

That all changed with the rise of crypto casinos. At the early stages of the crypto gambling industry, many established software providers refused to work with crypto sites, leaving new platforms to figure out their own approach to fairness. That’s when the concept of provably fair gaming was born - a method that allows players to independently verify the outcome of each bet.

For those who came specifically for the list of the best crypto casinos offering provably fair games, we've put together a quick shortlist below:

How does the provably fair algorithm work

In simple terms, a provably fair game uses a transparent cryptographic method that combines inputs from both the player and the casino to generate each result. Here's how it works:

• Before each bet, the casino provides a server seed (usually hashed in advance for transparency)
• The player provides a client seed, either manually or automatically assigned
• These two seeds are combined with a random nonce (a number that increases with each bet) and used to produce a final result through a cryptographic hash function

To simplify things even more, think of it like locking a box with two keys - one from the casino and one from the player. The final result (the game outcome) can only be created when both keys are used together. Or, if you prefer a tastier example: imagine making a smoothie. The casino provides the base ingredient - like plain yogurt or milk - and the player adds the flavor, like strawberries. Once blended, you get a specific result, say a strawberry smoothie. After the result is revealed, you can look back at both ingredients and confirm that no one swapped the strawberry for chocolate - the outcome fits exactly what went in.

This process ensures that neither the casino nor the player can predict or manipulate the outcome. After the bet, the casino reveals the unhashed server seed so players can verify that the result wasn't altered. Many provably fair games include a “Verify Fairness” button right in the game interface, allowing players to check the results without technical knowledge.

However, it’s important to note that not all games on a provably fair casino are built this way. Typically, only in-house or custom-developed games (like crash, dice, or plinko) use this system. There are not many games from external providers that offer provably fair verification, even on crypto sites.

Providers embracing provably fair gaming

While provably fair games were initially developed by crypto casinos to ensure transparency, some third-party game providers have started integrating this technology into their offerings. A notable example is Spribe with their flagship game Aviator which utilizes a provably fair system. This crash-style game allows players to verify each round's outcome, ensuring fairness and building trust in the gaming experience.

Another early adopter of provably fair mechanics is BGaming, a studio well-known among seasoned online casino players. Their popular slots - including Aztec Magic Deluxe, Avalon, Book of Pyramids, Fire Lightning, and Platinum Lightning - are now available with built-in fairness verification, combining classic gameplay with modern transparency.

Other notable providers embracing the technology include Evoplay and TurboGames, both of which have introduced a range of games built around provably fair algorithms. Their efforts reflect a growing demand among players for greater transparency and more accountable, player-centric gaming experiences.

FAQ