Bitcoin Forum

Rippleflip.com (https://rippleflip.com)
 
Bet between 1 and 5000 XRP to win up to 17x your bet! And it's provably fair, too!

Rippleflip.com is the most popular Ripple XRP betting game today. Rippleflip was started July 2013.

Our games are provably fair. We have API for game datas available, too. The fairness is provided the following way:

We've generated a list of random SHA-256 checksums. We've SHA-256'd them again and published a list of them (available here (https://mega.co.nz/#!pAVRSAQZ!fxemyDtJlgLDuW4Lti0ljUOL1o8FlWX46eTf2-bcJiY)). So each secret used by us has a corresponding key in the file we've published. When a bet is received, we look at the transaction hash and determine ten "coin flips" by looking at the final byte of SHA-256(your transaction hash + our secret at index (Ledger ID of your transaction + Flip #)). So there will be 10 coin flips each game, all being random and fair.

We use node.js as backend. We use ripple-lib to communicate with s1.ripple.com, the public rippled server. We monitor for incoming transactions at our game address - and we won't miss any even if our game server is down, because we will also look at the history since we were last up. This doesn't mean we're intending to have downtime, but in case downtime happens, it will not cause trouble - all bets will be handled. We also monitor for outgoing winnings payments. If - for some reason or another - the winning payment fails to confirm, we will try to send it again in next 15 minutes as long until it's done.

We've also run several stress tests on our game server to see its capabilities. For example, several hundred games at the same time. Our game server handled it perfect.

Preview image of the game:
https://rippleflip.com/img/previewgame.jpg

Have fun and responsibly betting!

If you're interested, there's a new fork [all right, clonecoin] of XRP out called Research Support Coin. It's filling the void left when Ripple Labs wound down the Computing For Good XRP giveaway. You can earn RSCs by BOINCing in the same way as with the XRP giveaway.

https://bitcointalk.org/index.php?topic=566608.0

Mind if I suggest you whip up an alternative To RippleFlip that runs with RSCs? You can even call it "Gambling For Good." :)

+1 please add RSCs to the game

to all:  RSC is not a fork of XRP.

i'm all for research and i even threw the idea around in the forum. but i personally, will only join and support an established project endorsed by seti@home, WCG and the like if ever a project decides to issue and distribute tokens based on provable work aka donated computing cycles.

also, read this before opening a trust line in ripple:

It should take a fair amount of effort for newcomers to prove themselves trustworthy. A brand new forum account with a single anonymous post does not and should not engender trust. It should be obvious, but bears repeating anyway, do not add trust lines to address that you do not trust (and don't trust random strangers on a forum!).

- dchapes

I'm sorry but we're not planning on making Rippleflip available for any other currency than XRP for now.

bump