TL;DR: 999dice is not provably fair at all, but they hide is so well, you'd never actually know it.

Stupid-long version:

I'd like to start with some background. I'm involved in the crypto community, have been mining and trading bitcoin for a very long time. (Well, very long being a relative term.) I'm a programmer, I enjoy math, and few things give me more joy than figuring out a math/programming puzzle. I've also dabbled with gambling my entire adult life. Not addicted to it by any stretch of the imagination. Losing is frustrating and ruins the joy of it. The joy I get from it is figuring out how it works, and making it work to my advantage. Card counting? Sure, sometimes. That's a bit boring however. Let it Ride is my favorite game to play for fun. Being able to increase your bet (or reduce your losses) depending on how your hand plays out? Oh, that’s fun. (Yes, I'm aware the house edge is about 3.5% or so on Let it Ride, and card counting doesn't do much good, but at a table in a casino, when the other players realize there's an advantage to sharing their hands with each other, that changes the odds a little).

Anyway - I wrote the above just to give a little background on where I'm coming from. Naturally, being a lover of all things crypto, I eventually gravitated towards sites like primedice and satoshidice and not too long ago, 999dice.com caught my attention. .1% house edge? Wow. That’s not bad. And since it's based on cryptography, you can't accuse them of cheating, like I'm sure all the online casinos engage in.

So I sta
Decide for yourselves, but don't be stupid and blatantly trust a site that hides the hash, makes you tell them you're looking, and provides deceptive information for calculating the hash yourself.