Bitcoin Forum

Constantly running ethereum jackpots!

Presenting eth-jackpot.com (http://eth-jackpot.com), an Ethereum lottery game where jackpots are always running.

How Jackpots work:
It's a simple jackpot/lottery game: players put money in the pot, and after the max bet count is reached, one player is picked at random to win the whole pot.
You increase your winning chances by betting more money.

Provably Fair:
The algorithm for picking the winner is Provably Fair. Details here eth-jackpot.com/about#ProvablyFair (http://eth-jackpot.com/about#ProvablyFair)

We are open to suggestions about improvements or new game ideas.

Is this another one of this additions which requires to deposit first before withdrawing the winning? I am just curious.

Thank you.

Yes, you have an account to deposit and withdraw ETH. You use that account to place bets (no need to make an ETH transaction for every jackpot bet).

Or are you talking about a starting bonus for new accounts, so that you can test the service without depositing? We currently don't have that system.

It's an actual game with 8 slots and one of those players that will try their luck will picked, interesting but needs to observe more and see how players
can benefits aside from luck that will always be the edge in order to win inside gambling activities.

Maybe you will also consider providing bonus and have wagering requirements before allowing to withdraw just in case a lucky takers will win, so it won't be easily abused, one of those many promotions and advertisement process to attract gamblers I guess.

It is just a raffle, I cant say it is a jackpot as the prize are coming from player's bet. Jackpot should be something more than that IMO, so using "jackpot" on its domain name is not really good idea while in fact there is no jackpot at all. It is only good to attract people as most people will be interested to look further when they read/hear the word "jackpot".
It is indeed the most simple gambling type and owner do not need to provide bankroll, that's why there were so many raffle/lottery type game in the past but most of them were dead very soon because nothing attractive in such game. No offenses, just saying the truth.

The information is very limited, I don't want to make an extra effort to register when I'm not convince with the information.
Since you need some suggestion, can you make description more attractive to us, I mean give us all the important information we need to know, you are marketing right since your gambling site is new, please do it with some aggressiveness that you really want us to try your game.

You absolutely should do some promotion with a selected user base, to be able to gain an initial trust. Otherwise is likely that nobody will take the risk to try your site.

It won't hurt your budget if you can create a promotion through this way. There are gamblers that aren't willing to take risk even few of their cents if the casino isn't so familiar at all.

There are people who'd be willing to give their feedback about your lottery just give them time to try your site without any deposits. Well as always said, beginning is always the hardest including your eth-jackpot.

Your algorithm is not provably fair. You, as the site owner, could be the last player. As last player, you will know all the previous bet amounts and the random seed (= result.) Therefor you could make exactly a bet with the exact bet amount that will be the winner. You could win every jackpot.

I am not saying you are doing this, but just saying it is not provably fair.



One solution could be to use those seeds in combination with a future ETH blockhash. So if we are at block 7137321 right now, you say we use hash from block 7137336 and we stop betting at block 7137331. So we have 10 blocks to bet. Then some delay till the result otherwise "the site" could still make a last-minute bet after the block already (as the bets are not on-chain) - so the result 5 blocks later. This only makes sense if the prizes are not too big (compared to miner block reward), otherwise you and a miner could still collude to withhold blocks. Also this will make the game obviously slower.

Another solution is to make it on-chain, especially with a smart contract, but as you state in your FAQ, this does cost TX gas.



Overall combining "jackpot games" and provably fair algorithms are unfortunately not ideal (typically slow especially if you want to have bigger prizes as you would need to use bitcoin blockhashes or even some heavy-calculating hash from the blockhash like PevPot did.)