Updated: April 15, 2021

Provably Fair Gambling – What Is It? Does It Really Work?

“Provably fair” is one of those terms that gets a lot of attention nowadays. If you’ve ever played on an online casino, there’s a good chance you have heard about it. If you’re reading this, there’s an even better chance that you would like to know more about it.

The meteoric rise of blockchain technology over the past decade has given birth to cool stuff like cryptocurrencies, smart contracts, ICO’s… and many more that may still come.

This revolutionary technology is a major breath of fresh air to the gambling industry for a wide variety of reasons, with provable fairness being one of them.

But where can you find these provably fair games? And what are they, exactly? How can you benefit from them?

Throughout this page, we will explain this innovative concept while shedding a light on its benefits as well as its risks.

If you already know all about that and you’re simply looking for the best provably fair games, here’s a list of reputable blockchain casinos where you can find them:

Stake Casino
stake.com

About Stake Casino

Stake is more than just a Bitcoin casino. It’s got hundreds of odds on all the best sports, a fresh look, modern games (including a few exclusives), a top-notch VIP program, and no welcome bonus. That’s right: you won’t find a welcome pack at Stake, but you won’t miss it. With provably fair games across the board, a fully disclosed house edge, and a wide array of rewarding promotions, you’ll know exactly what’s in store for you from the get-go. All in all, Stake is a casino where transparency is paramount.

Overview

Websitestake.com

Established 2017

License Curaçao

Bonus

Wagering Requirement

No Deposit Bonus

Live Chat Yes

Rating

4.8

Bonuses 4/5

Look & Feel 5/5

Licensing & Safety 5/5

Game Selection 5/5

Payment Options 5/5

Customer Support 5/5

Сustomer Reviews 4.5/5

Cloudbet
cloudbet.com

About Cloudbet

Having been around since 2013, Cloudbet is one of the oldest blockchain casinos. Following its establishment, it has grown into one of the leading Bitcoin casino platforms, even though you can now play and deposit with several other cryptos. It’s a very newcomer-friendly website, even offering a blog to introduce you to the world of Bitcoin gambling. Fans of sports can also join the fun: there is a comprehensive sportsbook product.

Overview

Websitecloudbet.com

Established 2013

License Curaçao

Bonus 5 BTC

Wagering Requirement 800 loyalty points per 0.01 BTC

No Deposit Bonus

Live Chat Yes

Rating

4.5

Bonuses 4/5

Look & Feel 5/5

Licensing & Safety 4/5

Game Selection 5/5

Payment Options 4/5

Customer Support 5/5

Сustomer Reviews 3.9/5

BitStarz
bitstarz.com

About BitStarz

Unlike some run-of-the-mill gambling sites out there, BitStarz offers a complete playing experience. Arguably one of the best Bitcoin casinos overall, it includes a vast selection of games from all the top providers, and it’s full of mouth-watering promotions. It asks you to “Dream big, win bigger,” and it lives up to this ambitious slogan with accolades such as the Best Online Casino Award (2018) and the Player’s Choice Award (2019). However, any casino with a large player base is not without its detractors, which is why we took a closer look at this popular brand.

Overview

Websitebitstarz.com

Established 2014

License Curaçao

Bonus 5 BTC + 180 Free Spins

Wagering Requirement 40x

No Deposit Bonus 20 Free Spins

Live Chat Yes

Rating

4.8

Bonuses 5/5

Look & Feel 5/5

Licensing & Safety 5/5

Game Selection 5/5

Payment Options 4/5

Customer Support 5/5

Сustomer Reviews 3.8/5

FortuneJack
fortunejack.com

About FortuneJack

Forget USD, EUR, or any other fiat currencies: at Fortunejack, you can only play with cryptocurrencies. However, this casino isn’t just for hardcore Bitcoin gamblers. With a large selection of games from all the top providers, a few hidden gems, and Fortunejack’s no deposit welcome bonus, it pleases newcomers and seasoned gamers alike. Whether you’re looking for fortune or just a lot of fun, this jack-of-all-trades should be on your radar.

Overview

Websitefortunejack.com

Established 2014

License Curaçao

Bonus 6 BTC

Wagering Requirement 30x

No Deposit Bonus 50 Free Spins

Live Chat Yes

Rating

4.2

Bonuses 5/5

Look & Feel 5/5

Licensing & Safety 4/5

Game Selection 4/5

Payment Options 3/5

Customer Support 4/5

Сustomer Reviews 4/5

EarnBet
earnbet.io

About EarnBet

Calling itself the ‘first decentralized casino’, EarnBet is a casino Dapp where you can play an adequate range of provably fair games with different cryptocurrencies. Unusually for a casino Dapp, you’re also getting a welcome bonus on sign up. But it gets better: play regularly and you can even win a part of the casino’s profit and lower the house edge!

Overview

Websiteearnbet.io

Established 2018

License Curaçao

Bonus $50

Wagering Requirement 50x

No Deposit Bonus

Live Chat Yes

Rating

4.5

Bonuses 4/5

Look & Feel 5/5

Licensing & Safety 5/5

Game Selection 4/5

Payment Options 4/5

Customer Support 5/5

Сustomer Reviews 4.1/5

Imagine you are playing a slot or a blackjack game at an online casino. How can you know beyond any doubt that the game’s algorithm isn’t rigged to cheat you?

The short answer is: you can’t. As a player, you have no other choice but to trust the casino operator.

This is where provably fair games can make a huge difference. With this technology, players are empowered with tools that allow them to verify if a game’s outcome was truly fair, and they can do this for every round of the game if they choose to.

Giving players a sure way to test if a card shuffle was truly random or if a dice roll respected the probabilistic laws of an honest dice roll removes the need to blindly trust the casino.

Naturally, the querying for provable fair games has seen steady growth over the last years, as is shown in the volume of Google searches for “provably fair”.

The science of generating random numbers to ensure anti-cheating policies on casinos is called random number generation (RNG). It’s part of a scientific field that involves computational and mathematical knowledge, but rest assured we won’t dive into boring technical know-how.

All you need to know is that RNG warrants the randomness of a dice roll, roulette number, slot symbol, and so on.

Companies and regulators responsible for licensing casinos evaluate the equipment’s RNG mechanism or the online casino’s server. Although blockchain ledgers may eventually change this, in most cases proving a game is fair boils down to proving that such randomness actually occurred.

With a good technological implementation and a dash of cooperation from the operator, it is possible to build games on top of a blockchain, granting transparency and immutability to the way the game operates.

If you’re not sure how this is achieved with this distributed ledger technology, this two minute video explains it quite well:

If the game is not built on the blockchain, then the fairness authentication may still work through manual verification. The use of open-source code and/or verification tools is also added to the mix to complete the provable fairness toolkit.

Most casinos implementing provably fair games have their own verification methods and tutorials. This is because there are a couple of different ways of doing this: one if the casino is blockchain-based, and another if it isn’t.

The big take here is that simply because a casino accepts Bitcoin or any other cryptocurrency it doesn’t automatically mean it uses blockchain technology in its games.

Although games in all casinos can be provably fair, user experience is severely compromised if they wish to verify fairness claims. If the casino and its games are assembled with blockchain technology, they can be provably fair by design.

Here’s a very simplified version of the process, assuming the casino isn’t blockchain-based:

  1. The random number used to determine the outcome of the event is calculated based on a server seed (generated by the server) and a client seed (generated by the client’s hardware)
  2. Players can see their own client seed because it is generated from their side; the server seed, however, is displayed as a hash (e.g.: 4b02asd9l8cocacrl119sp0x33497a) because it is encrypted
  3. When the game is over the casino displays the event’s client seed; players can then input this seed into a trusted third party calculator – there are many on Google – and it will return a hash;
  4. If the hash matches the server seed then you know no suspicious changes occurred within that gaming session; any mid-game changes would result in the hashes not matching.

If you just read all that blazing your eyes through it with little understanding don’t worry – it is a daunting process to go through.

BitStarz
bitstarz.com

About BitStarz

Unlike some run-of-the-mill gambling sites out there, BitStarz offers a complete playing experience. Arguably one of the best Bitcoin casinos overall, it includes a vast selection of games from all the top providers, and it’s full of mouth-watering promotions. It asks you to “Dream big, win bigger,” and it lives up to this ambitious slogan with accolades such as the Best Online Casino Award (2018) and the Player’s Choice Award (2019). However, any casino with a large player base is not without its detractors, which is why we took a closer look at this popular brand.

Overview

Websitebitstarz.com

Established 2014

License Curaçao

Bonus 5 BTC + 180 Free Spins

Wagering Requirement 40x

No Deposit Bonus 20 Free Spins

Live Chat Yes

Rating

4.8

Bonuses 5/5

Look & Feel 5/5

Licensing & Safety 5/5

Game Selection 5/5

Payment Options 4/5

Customer Support 5/5

Сustomer Reviews 3.8/5

Cloudbet
cloudbet.com

About Cloudbet

Having been around since 2013, Cloudbet is one of the oldest blockchain casinos. Following its establishment, it has grown into one of the leading Bitcoin casino platforms, even though you can now play and deposit with several other cryptos. It’s a very newcomer-friendly website, even offering a blog to introduce you to the world of Bitcoin gambling. Fans of sports can also join the fun: there is a comprehensive sportsbook product.

Overview

Websitecloudbet.com

Established 2013

License Curaçao

Bonus 5 BTC

Wagering Requirement 800 loyalty points per 0.01 BTC

No Deposit Bonus

Live Chat Yes

Rating

4.5

Bonuses 4/5

Look & Feel 5/5

Licensing & Safety 4/5

Game Selection 5/5

Payment Options 4/5

Customer Support 5/5

Сustomer Reviews 3.9/5

If a casino game is blockchain-based, the verification process takes a big turn toward simplicity. Taking advantage of smart contracts in platforms like Ethereum, TRON, EOS, or NEO to build casino games means the rules will all be governed by an overseeable code.

That code – along with any transactions carried out on the blockchain – can be publicly audited in a more robust manner.

Instead of the player manually checking each round, the software can be audited once to assure no form of foul play will occur. Periodical checks can then be performed to confirm the code has not been altered. This is a big win for players, and regulators as well.

EarnBet
earnbet.io

About EarnBet

Calling itself the ‘first decentralized casino’, EarnBet is a casino Dapp where you can play an adequate range of provably fair games with different cryptocurrencies. Unusually for a casino Dapp, you’re also getting a welcome bonus on sign up. But it gets better: play regularly and you can even win a part of the casino’s profit and lower the house edge!

Overview

Websiteearnbet.io

Established 2018

License Curaçao

Bonus $50

Wagering Requirement 50x

No Deposit Bonus

Live Chat Yes

Rating

4.5

Bonuses 4/5

Look & Feel 5/5

Licensing & Safety 5/5

Game Selection 4/5

Payment Options 4/5

Customer Support 5/5

Сustomer Reviews 4.1/5

CasinoFair
casinofair.com

About CasinoFair

One of our favourite gambling Dapps, CasinoFair has been put on a break by FunFair, the mother company. The name ‘CasinoFair’ couldn’t be more appropriate for a casino that values fairness above all else. All its games, which are developed in-house, are guaranteed fair. Equally fair are its payments – you can expect to receive your earnings immediately after a win. With such an emphasis on fairness and transparency, CasinoFair is basically the definition of a blockchain casino.

Overview

Websitecasinofair.com

Established 2019

License Curaçao

Bonus 5,000 FUN

Wagering Requirement

No Deposit Bonus

Live Chat Yes

Rating

4.2

Bonuses 3/5

Look & Feel 4/5

Licensing & Safety 5/5

Game Selection 4/5

Payment Options 4/5

Customer Support 5/5

Сustomer Reviews 3.5/5

If you choose to play at a renowned Bitcoin casino like BitStarz you probably don’t need to worry about constantly checking if an outcome was fairly calculated. It’s highly unlikely they would risk their reputation trying to cheat players; casinos always have a long term statistical edge – meaning that, by design, they always win.

Sure, it won’t hurt you to know how to verify the fairness of a game if your full-house was just beaten by a royal flush in the final round of a poker game. That’s how those verification tools become truly useful in our opinion.

On the other hand, casinos entirely based on blockchain technology are still a relatively new thing.

It’s not just about recycling the previous structure and carrying transactions with cryptocurrencies instead of fiat money. The whole thing needs to be re-designed. Players can already choose between some very good options if they want to engage in sports betting or casino games that use this technology.