Live data from Hacker News

Show HN: My friends just built a Bitcoin casino

bitino.com

11–20 of 64 posts

Re: Show HN: My friends just built a Bitcoin casino

#11
post #2

you can see the game in action here - http://bitino.com/about/

FYI, there are a few typos in that page:

  "ammounts" should read "amounts"
  "Private Game URL's" does not need an apostrophe
  "You muse keep your game" should read "You must keep your game" (I'm guessing that one)

Re: Show HN: My friends just built a Bitcoin casino

#13
post #11
post #2

you can see the game in action here - http://bitino.com/about/

FYI, there are a few typos in that page: "ammounts" should read "amounts" "Private Game URL's" does not need an apostrophe "You muse keep your game" should read "You must keep your game" (I'm guessing that one)

fixed. thanks

Re: Show HN: My friends just built a Bitcoin casino

#15
post #7

Earlier quoted context omitted.

It looks like 30 bucks in few seconds. Nice. Like it. I am curious how are you guys making profit then?

Because, if you lose once, you lose?

Yes this is correct. i lost once, i lost it all.

Re: Show HN: My friends just built a Bitcoin casino

#16
post #9
post #6

Earlier quoted context omitted.

I guess with bitcoin being so anonymous, it would be easier to get away with fraud and never be caught compared to a company that accepts USD though VISA.

it's all about reputation. all games are made public online. all payouts are displayed on the website. if things went array for any reason it would be public knowledge very quickly and thus the end of the site.

I like the idea of provably random, but I think I would change it in a subtle way: I would pull the least relevant digits from a list of stocks (or currencies), sum them, then hash them. The key would be to do this after the bets are placed. Since any amount of jitter on the least significant digit for any of the stocks completely changes the outcome, and since there are already massive third parties interested in the exact nature of these numbers, you would have a very random, very provable flip. You wouldn't need a changing seed because the bets would come in and then everyone would wait a second or two and then the result would be provably fair.

The problem with your provably random method is that it is still possible for the house to get a slight edge. Since the server seed is random, you could regenerate it hundreds of thousands of times so that the house has a slight edge for the first two or three flips (assuming there are lots of people playing on the same deck, it gets wayyyy easier if it is one deck per person). You don't need that much of an edge to dominate your competition. An edge of 2 or 3% doubles your revenue; which would 4x or 6x your profit, since margins are usually thin for gambling sites.

Re: Show HN: My friends just built a Bitcoin casino

#17
On initial glance, and I may be a million miles off here, it feels like the history section which shows payouts is rather redundant.

It seems like there's nothing to stop the casino inserting their own played games (either real but fixed, or entirely faked) to "adjust" the balance of historical payouts in one direction or another?

The concept of the public seeds is clever though

Re: Show HN: My friends just built a Bitcoin casino

#19
post #9
post #6

Earlier quoted context omitted.

I guess with bitcoin being so anonymous, it would be easier to get away with fraud and never be caught compared to a company that accepts USD though VISA.

it's all about reputation. all games are made public online. all payouts are displayed on the website. if things went array for any reason it would be public knowledge very quickly and thus the end of the site.

What stops you inserting your own choice of extra payouts into the game history?

This would make people believe you were paying out at a higher rate than you actually are.

I'm not suggesting you're doing that, just wondering what stops it, as I don't see anything immediately obvious.

Re: Show HN: My friends just built a Bitcoin casino

#20
post #17

On initial glance, and I may be a million miles off here, it feels like the history section which shows payouts is rather redundant. It seems like there's nothing to stop the casino inserting their own played games (either real but fixed, or entirely faked) to "adjust" the balance of historical payouts in one direction or another? The concept of the public seeds is clever though

> The concept of the public seeds is clever though

It's what all the other bitcoin gambling websites do. I can't hotlink it, but visit here[0] and click "verification" in the top right.

[0]: http://satoshidice.com/#

Post reply on HN