Players can use blockchain technology to verify the fairness of their online slot game through provably fair slots. This offers a solution to concerns about fairness in this popular form of online gambling.

Provably fair gaming allows players to verify the fairness of online casino games. A special code, called the provably fair algorithm, generates an encrypted key. Therefore, with the game’s results and sends it to the player. The player can use this key to verify the accuracy of the game after their session.

provably fair bitcoin slots

How Provably Fair Gaming Works

To understand how provably fair gaming works, consider that you are holding a dice in your hand and shaking it. The server produces a set of data in a secure cryptographic way, which is called the hash. The hand represents this hash.

  • You hold a dice in your hand with an unknown value that will be revealed when you throw it on the table.
  • The server hash (your hand) already knows the value of the dice, called the server seed.
  • When the game ends, you will open your hand and reveal the server seed.

The result of the dice roll, called the server seed, can range from 1 to 6 like a regular dice. In provably fair gaming, this result is referred to as the client seed. After the hand is removed, you can view the server seed and, therefore, the value of the dice. Once you finish rolling the dice or playing the game, you can verify if the game was fair.

For example, by checking that the server hash matches the server seed. There are specific tools that can help you use the provably fair feature of a casino to calculate fairness, so you don’t have to do it completely manually.

The most popular tool is a SHA256 calculator.

  • To use it, you simply copy the server seed from the casino into the field called DATA and then hit the CALCULATE SHA256 HASH button.
  • If the hash displayed is the same as the one provided by the casino, the game has been provably fair.

What are Provably Fair Slots

Provably fair slots are online slot games that allow players to personally verify the fairness of the game. This is achieved through the use of a server seed and a SHA256 calculator. Players can copy the server seed provided by the casino into the calculator and follow the instructions to determine if the game was fair. If the two hashes match, the game was fair.

Pros of Provably Fair Slots

Provably fair slots have several benefits compared to regular slots:

  • They ensure that the operator cannot alter the results.
  • They guarantee that the casino cannot “steal” your money.
  • They provide privacy because they operate on the anonymous blockchain platform.
  • They offer faster banking because they use cryptocurrencies that can be quickly processed and result in faster withdrawal times.
  • They offer transparency because they operate on the independent blockchain platform where the operators cannot make decisions alone.
provably fair bitcoin
Source: Provably

Full Transparency and Privacy

No other party involvement

No Third-Party Involvement – as stated above, there’s no need for a third-party governing body to do the verifications for you. All you have to do is to personally enter the data into a calculator and see if everything is in order.


Verifiable Gaming – the thing that makes provably fair so amazing is simply the possibility of you being able to verify the outcome of each game 100% free from any other third party. This is the most important advantage the slots have in comparison to a regular site.

RTP is higher

RTP – with regular casinos, slots have a return-to-player rate of about 96%. With provably fair slots, the RTP rate is extremely high, set usually at between 99% and 99.5% of the money the players are spending on playing.

The main benefit of provably fair slots is the ability for players to verify the fairness of the game on their own, without the need for a third party.

  • This adds an extra layer of trust for players who may have concerns about the fairness of traditional online slots.
  • Provably fair slots also eliminate the need for a governing body to verify the fairness of the game, which can save time and resources.
provably fair data
Source: Provably

Drawbacks of Provably Fair Slots

One major drawback of provably fair slot is that they are typically only available on websites that require the use of cryptocurrencies for banking. This may be a hurdle for players who are not familiar with cryptocurrencies or do not want to use them for online gaming.


You can only play provably fair slots with cryptocurrencies. If you are new to cryptocurrency, this may be confusing, but it is usually not an issue.


Still hackable – although provably fair slots are 100% fair, as they’re verifiable, this does not mean a certain person from the casino you’re playing on can’t rigg them in some way. Hacks are common everywhere, even on the secure distributed ledger of a blockchain. Still, the slots that use provably fair technologies are way more secure than regular ones.


Aspects – provably fair slots are completely fair, but they lack the looks. One you go to a regular casino and look for the slots, you can find them in an instant thanks to the many hours and money that developers have put into creating them as visually powerful as possible. You won’t find such a level of dedication visually in provably fair slots. Not so far, at least.

Provably Fair Casinos

We’ve compiled a list of a best online casinos that offer provably fair casino games and full transparency.

Get up to
3 BTC Bonus
+25 Free Spins
4.8 rating
T&Cs Apply
New customers only
Make your deposit at least 1,000 JPY / 10 EUR / 10, 000 KRW / 0.00035 BTC / 0.005 ETH / 10 USDT / 10 USDC.
#1 Rated Crypto Casino In The World - Incredible bonuses. Zero withdrawal fees. Robust customer support
Get up to:
Exclusive Promotions
+Free Spins
4.8 rating
T&Cs Apply
New customers only
Before you take advantage of these exclusive offers, you will need to deposit at least €10.
Official Partner of Evil Geniuses & first licensed bitcoin casino
Get up to
6 BTC Bonus
+300 Free spins
4.5 rating
T&Cs Apply
New customers only
The minimum amount that can be deposited in order to claim a deposit bonus is 0.001 BTC(or equivalent in other cryptocurrencies)/20 USD (or equivalent in other fiat currencies).
FortuneJack Casino was first set up in 2014 and became exclusive crypto casino & sports platform, live dealer games and bitcoin provably fair games.
Get up to
€600 Bonus
+ 500 Free Spins
4.3 rating
T&Cs Apply
New customers only
Minimum Deposit - €20 Wagering Requirements - 40x
Experience the perfect blend of entertainment, security, and fair play at CryptoGames, where advanced software technology meets the thrill of online gaming.

Final Thoughts

Provably fair slots offer a solution to concerns about the fairness of online casino games. By allowing players to verify the results of their game, these slots offer a level of transparency and accountability that is not present in traditional online slots. While they may require the use of cryptocurrencies for banking, the benefits of verifiable gaming and no involvement from third parties make provably fair slots a valuable option for players.

Frequently Asked Questions (FAQs)

What are provably fair slots?

Provably fair slots are online slot games that utilize cryptographic algorithms and blockchain technology to ensure the fairness and transparency of each spin. These slots provide players with the ability to independently verify the randomness and authenticity of the game outcomes.

Can I trust provably fair games?

Yes, provably fair games can be trusted. The use of blockchain technology ensures the integrity and security of the gaming process. The transparency and verification mechanisms in place allow players to independently confirm the fairness of the game outcomes, eliminating any doubts or suspicions.

How do provably fair slot games work?

Provably fair system employ a random number generation (RNG) algorithm that generates the outcomes of each spin. The algorithm takes into account seed values provided by both the player and the casino. By comparing these seeds and verifying the cryptographic signatures, players can confirm the fairness of the game.

Why are provably fair games important?

The provably fair usage address the concerns of fairness and transparency in online gambling. By providing a verifiable system, they build trust between players and online casinos. These slots empower players to actively participate in verifying the fairness of the game and offer a secure and enjoyable gambling experience.

How can I verify the fairness of a provably fair slot game?

To verify the fairness of a provably fair slot game, you can follow these steps:

  1. Obtain the seed values: Ensure that both the player seed and the casino seed are available.
  2. Verify the seeds: Use a cryptographic hash function to confirm that the seeds were not tampered with.
  3. Check the digital signature: After the spin, compare the digital signature provided by the game with the seeds used in the RNG algorithm. This comparison will validate the authenticity of the game outcome.

Are provably fair games more secure than traditional games?

Provably fair games offer an additional layer of security compared to traditional slots. The use of cryptographic algorithms and blockchain technology provides a decentralized and tamper-proof system. This significantly reduces the risk of data manipulation or unauthorized access, ensuring a secure gambling environment.

Leave a Reply

Your email address will not be published. Required fields are marked *

Filter By Tags
Top 5 Crypto Casinos
Betfrom Casino
Betfrom Casino

Exclusive Welcome Bonus of 100% up to $500.

CryptoRush Casino
CryptoRush Casino

Exclusive Welcome Bonus of 100% up to $500.

JackpotFrenzy Casino
JackpotFrenzy Casino

Welcome Bonus up to €500 +200 Free Spins.

Alcazar Casino
Alcazar Casino

Exclusive €777 Deposit Bonus up to 100%.


Exclusive €2500 Welcome Package up to 250%.