Yup! We'll have it this week!

Good idea. Probably the main reason I haven't gone down that route, is if people are going to abuse the system (which happens ~200 times a day) I'd rather they weren't disruptive. But than again, having some disruptive rain catchers is probably more entertaining than silence ... assuming no one's trying to have a serious conversation at the time.

Yeah, that seems to be the case for when you win (it shows payout). But when you lose, it shows profit. It's a bit weird as most people would probably expect to see profit on both the win and loss case, but it does seem like they are updating the balance correctly

Probably to prove how easy/cheap it is to disrupt the bitcoin system. However when all is said and done, we should have a much more robust ecosystem (child pays for parents, replace by fees, dynamic fees, mempool pruning, dynamic relay fees) and hopefully even bigger blocks (which will make spamming more expensive). In the mean time, there's a fair bit of pain to go around

Another big milestone coming up: Almost one year in business!

Meanwhile, the max profit has creeped up all the way to +7 BTC in a single game! 6 BTC has been won several times, but who will be first to win a lucky 7? 

If you lose, wouldn't you like to know beyond a doubt that you fairly lost? Know if you were unlucky or fleeced. That's what provably fair allows you to do.

That's not really the case. The real advice should be to minimize the amount you wager when playing a game with a fixed house edge.


Both 'blockage' and 'dooglus' gave fantastic solutions (just skip past the rest, really). As I recall, I checked blockage's and awarded him the prize, and then Dooglus came in later and posted an even better strategy.

Personally hate them. I feel like they're just a gimmick to force you to gamble more and longer than you want. The last ~5 casinos I looked at, the maths puts you as far better off to not claim the bonus. And you're not trapped either, which is nice.

Due to a bug that escaped testing, for a couple hours until it was caught app developers were credited too much money (at the expense of investors). We have already patched and deployed a fix, but I've yet to correct for previous bets. To avoid any problems, I've had to freeze all investment and divestments until I fully correct the numbers. During this time, app balances have also been frozen.

This has had absolutely zero impact on players, and will be sorted out in the next few hours.

Extremely sorry about this, working as hard as I can to fix it.


Edit 1: Bankroll has been corrected, and investing and divesting resumed! Investors have been credited a little extra for the trouble too!
Edit 2: App balances have been corrected now too! (and a little extra thrown in)

Back to business as usual!

Ah, I see! Yeah, that makes sense. Well done =)

Since everyone is talking about the faucet, my idea has always been to have one of the worst faucets and instead offer pretty much the best house edge.

I guess not a lot of people realize this, but while faucet users while add a lot of site activity, they tend to add a lot of support load and over the last 6 months I've actually put a huge amount of effort to deal with the majority of tickets within within an hour (there have been many exceptions, and I do sleep as well) but spending less time dealing with faucet abuse and people who lost their password on a faucet accounts definitely makes my life easier.

So really, the faucet's purpose is to allow people to try the game before they deposit, but it's not really an integral part of the game play =)

Interesting! Great seeing someone do something new with the MoneyPot API! Best of luck


Actually, there is a much better way using the MoneyPot API. Because of the way you process jackpots manually, I actually think you have an extremely high risk of being -EV.

Let's take a look at one of payout tables of the bets you're making: https://www.moneypot.com/bets/34410141

First of all, you can omit ranges with 0 payouts, as it's a bit redundant.

I don't fully understand the mechanisms of your game but I'm going to assume in that bet, if the outcome lands between [0, 15342) they get the jackpot. However from the MoneyPot's perspective it's only configured to give them 111.97 bits. What you should do, is tell MoneyPot exactly what the jackpot is (e.g. if it's a small bet, 0.5 BTC or if it's a large bet 1 BTC) and if someone wins it, the jackpot money will come from investors and not you! As a side benefit, it'll force you to modify some of your payouts (or probabilities) so that they are overall +EV


Best luck with your casino! Catch me on slack if you need any help or have any questions

You can type !help to get a link to shiba's tutorial:


But the commands I use:

!cv   :: Convert from one currency/unit to another
!block :: Ask when the last bitcoin block was mined, and get notified when the next block does get mined
!median :: Get the median game crash over a certain amount of games
!bust :: Provide a condition to find when the last game matched that
!streak :: Find out information on the biggest streak to date matching that condition

kungfuant is a machine though, I wouldn't be suprised to see that there's more I don't know about or he adds more in the future  

It's for users on mobile. The users on the mobile can't see the player list, because the side bar disappears (try make your browser smaller to try), so they can access it via that tab. I'll today have the tab removed if you're on a screen big enough to support the "players on the side".

Sorry about the confusion!

It's similar. Imagine it like a pump and dump scheme   Some people call it an altcoin simulator

Ohh! Awesome prize! I've learnt to love mine. The hardware (other than the micro usb cable) feels very high quality, and they keep iterating by improving the firmware (instead of making you feel obselete with new hardware).

Good luck to everyone.

Last 24h of game day:




You can see the giant dip to -20 profit BTC, caused by "TheHound" who then returned it back to the house as quickly as he took it =)

Ignoring that for a second, it's been advised since 1996 to not use MD5 in applications where collision-resistance is required. This is clearly a case of that, as every collision gives you an opportunity to have multiple game outcomes and be able to selectively reveal the one that made the person lose.

Anyway, feel free to use MD5. It just doesn't make your site provably fair =)

Looks interesting! Although you might want to rethink using md5, it suffers from a lot weaknesses and preimage attacks against it which make it extraordinarily unsuitable for a provably fair scheme. Why not use something like sha256 instead?

This has been a stance that I've done a bad job at communicating, but the fact that the app uses MoneyPot shouldn't be taken as an endorsement of the app of any kind. Anyone is able to create a moneypot app, and go live without any sort of review at all (and this is by design). In fact, the poster of this app hasn't yet even contacted me so as much to verify he controls the domain yet

The goal of MoneyPot is to make it as easy as possible for someone to create their own legitimate bitcoin casino, and as easy as possible for players to safely try it out. The app only ever has access to the amount of money you explicitly authorize it with, so it's pretty safe to transfer a few pennies to try the site out (knowing the worst is the site takes those pennies).

If the app was a scam, it could very easily just tip the owner the entire amount you authorized it with, and it's pretty much irreversible on my part. In many ways, MoneyPot tries to just be like bitcoin itself: it lowering the barriers to entry, and makes it possible to run a legitimately. But it doesn't mean satoshi has been personally satisfied that you're up to good =)