UPDATE: Play as a guest WITHOUT owning Minecraft! BitVegas Minecraft - Free BTC

[BitVegas]

Yes I have a few people bring this up. I am working on a new provably fair system using seeds generated by the players.

Here's my idea. Inspired by the bitZino double shuffle.

1) BitVegas shuffles the deck and supplies the hashed result.
2) Players place their bets
3) When the betting closes. All the X,Y,Z locations of the players with active bets are grabbed and added together to determine a new seed.
4) That seed is used to reshuffle the deck
5) The deck is used and the game is played.

Players will be able to see all the X,Y,Z positions on the verify page and confirm they were real. (You can see your position ingame on the client by pressing F3).
They will also be able to see that the seed was really used to reshuffle the deck and nothing else.

Let me know what you think and I will implement it. Or if it needs any changes.

I have to do things a little differently here as I have multiple players betting on one 'deck'.


Edit: I created this with bacon racing and roulette in mind. I just realized it won't work with blackjack as you are sitting and your position does not change. Back to the drawing board!
I could use the players YAW position (Seen by pressing F3 in-game and looking at the value) 'f'. This is the exact direction the player is facing and players can confirm it

[dooglus]

I could use the players YAW position (Seen by pressing F3 in-game and looking at the value) 'f'. This is the exact direction the player is facing and players can confirm it

I would rather it was something that I can confirm for all players.  For example, if you take the last thing said by each player who bet, and show that on the webpage, I can check that you have the right thing for all players.

If a player hasn't spoken, use the empty string for them.  Then I can say "go number 3!" before the off, and actually have it influence the outcome.  If a player doesn't care to change their seed (by talking) they don't have to, and they contribute the same to the seed for each event until they happen to speak.  Just a simple sha256(player1string|player2string|...) would do for the 'client(s)' seed.

What do you think?

[BitVegas]

That is a good idea. With blackjack the initial shuffle is done upon the first placed bet and the last shuffle will need to be done when the round starts. This only gives a 5 second window to set your client seed by chatting. Unless i grab the last string the player said even if it was before they joined the round. (Maybe if they spoke in the last two minutes so it's still easy to scroll up on the client and see it)

[dooglus]

That is a good idea. With blackjack the initial shuffle is done upon the first placed bet and the last shuffle will need to be done when the round starts. This only gives a 5 second window to set your client seed by chatting. Unless i grab the last string the player said even if it was before they joined the round.

Or if no string is said by the player i could maybe use the players name instead

I was thinking just keep a record of the last thing each person said.  Perhaps resetting it to their name when they log in to the server.

[BitVegas]

I was thinking just keep a record of the last thing each person said.  Perhaps resetting it to their name when they log in to the server.

Ok. What about if a player has not spoke in an hour. Should i have a cut off time back to a blank string / their name?

[🏰 TradeFortress 🏰]

I was thinking just keep a record of the last thing each person said.  Perhaps resetting it to their name when they log in to the server.

Ok. What about if a player has not spoke in an hour. Should i have a cut off time back to a blank string / their name?

No, why? A user can use the same seed if they feel lucky or whatever. It just needs to be really provably fair and everyone can verify.

[BitVegas]

I was thinking just keep a record of the last thing each person said.  Perhaps resetting it to their name when they log in to the server.

Ok. What about if a player has not spoke in an hour. Should i have a cut off time back to a blank string / their name?

No, why? A user can use the same seed if they feel lucky or whatever. It just needs to be really provably fair and everyone can verify.

Yeah the only reason I said this is because after an hour it will be hard for the players to see if the player really said that. The chat log in minecraft only scrolls up so high.

[dooglus]

Yeah the only reason I said this is because after an hour it will be hard for the players to see if the player really said that. The chat log in minecraft only scrolls up so high.

After an hour it's relatively easy to look back and see what phrase was used for the last game, check that it's the same if the user hasn't spoken since.  It's hard to be sure that it's been exactly an hour since he spoke, and that you didn't wipe his string early because it game you a better shuffle.  But I see what you mean for the player's first game at the table.

If I'm sat playing blackjack and a guy I never saw before comes and sits down, and happens to be using a sentence I never saw him say (because he joined and spoke before me) then that's not "provable" for me.  I guess you'll want to initialise his string to his name each time he bets without having bet recently, or each time he switches games or tables?  It's not as straightforwards as you might think is it!

[BitVegas]

Yeah the only reason I said this is because after an hour it will be hard for the players to see if the player really said that. The chat log in minecraft only scrolls up so high.

After an hour it's relatively easy to look back and see what phrase was used for the last game, check that it's the same if the user hasn't spoken since.  It's hard to be sure that it's been exactly an hour since he spoke, and that you didn't wipe his string early because it game you a better shuffle.  But I see what you mean for the player's first game at the table.

If I'm sat playing blackjack and a guy I never saw before comes and sits down, and happens to be using a sentence I never saw him say (because he joined and spoke before me) then that's not "provable" for me.  I guess you'll want to initialise his string to his name each time he bets without having bet recently, or each time he switches games or tables?  It's not as straightforwards as you might think is it!

Yeah. I want BitVegas to be 100% provably fair without fail. We'll get there. I'm going to spend today designing many systems and seeing what works best

[BitVegas]

The new provably fair system is now up for your testing on BlackJack.

It will be added to the other games over the next few days.

We have also added in Jackpots for Minefield

[D35TR0Y3R]

This is a great idea. I dont think I'll risk any actual btc on it, due to the fairness not being proven, but it stills works great.

[dooglus]

The provably fair pages for blackjack used to show the shuffled deck in a format I could understand.  Now it doesn't.

Am I missing a key or something?

[BitVegas]

The provably fair pages for blackjack used to show the shuffled deck in a format I could understand.  Now it doesn't.

Am I missing a key or something?

Sorry about that. I forgot to add the key. I will add it shortly! For now:

0   Ac
1   2c
2   3c
3   4c
4   5c
5   6c
6   7c
7   8c
8   9c
9   10c
a   Jc
b   Qc
c   Kc
d   Ad
e   2d
f   3d
g   4d
h   5d
i   6d
j   7d
k   8d
l   9d
m   10d
n   Jd
o   Qd
p   Kd
q   Ah
r   2h
s   3h
t   4h
u   5h
v   6h
w   7h
x   8h
y   9h
z   10h
A   Jh
B   Qh
C   Kh
D   As
E   2s
F   3s
G   4s
H   5s
I   6s
J   7s
K   8s
L   9s
M   10s
N   Js
O   Qs
P   Ks

[dooglus]

Sorry about that. I forgot to add the key. I will add it shortly! For now:

0   Ac
1   2c
2   3c
...
P   Ks

Maybe show the deck too so we don't have to do the substitutions ourselves.

[dooglus]

A couple of small things:

"1 seconds" (should be singular) and "wait 0 seconds"?

[dooglus]

Suggestion:

Add 0.0005 and 0.0001 chips.  Then people get to play at least 10 times with their free 0.001 chip every 15 minutes.

Currently lots of people are playing playmoney, presumably because they lost their free chip the first time they bet it, and have to wait 15 minutes to play again for free.

OK, they should deposit, but lots probably won't.  It's better for the site to have people playing for microstakes than for playmoney I would think.

[dooglus]

When I increase my bet on roulette:

"you added 0.001 BTC to your bet on RED"

I'd prefer to see the new total, not the increment.  Like this:

"you increased your bet on RED to 0.003 BTC"

[dooglus]

I know this has been mentioned before, but is there anything you can do to stop people standing in front of blackjack players?

I'm frozen in place since I'm sat down, so when someone stands in front of me I can't see my cards.

[msm595]

Love the server, I have been losing many bitcoin at roulette xD. If you need the assistance of a programmer (php, java w/ bukkit experience, js, html, etc) or a webadmin I'd love to help. It seems like there are currently some site issues.

[dooglus]

In the minefield game, if I want to bet 0.002 BTC, I put a 0.001 chip in my hand and click the betting box twice.  After the first click my chip is replaced by a shovel, and I have to find the 0.001 chip in my inventory because it has moved.  It's kind of annoying.