Dice Site - How to?

[smeagol]

How do people make dice sites?

Is it just something like this:

<?php
$client_choice = (user input)
$number = rand(0,1000);
if $number == $client_choice {
send bitcoins!;
}
else {
keep bitcoins for yourself!;
}
?>

[imrer]

I'll have a casino game wheel of fortune for sale. PM me in 4 days, if you are interested.

[devthedev]

smeagol, usually they're provably fair. rand( is not provably fair.

[smeagol]

smeagol, usually they're provably fair. rand( is not provably fair.

How?

[trcjr]

If srand is seeded with a known value then the random numbers it generates will be reproducible. After the random number is generated the seed to srand is published.

[smeagol]

How do you make a script which automatically either doubles or keeps a senders money?

I think that is easier to do.

[EventualCoinMillionaire]

I would definitely like to hear more about this.

[roslinpl]

True, if you want to make a good proffable game you need to
use kryptography

[Ins]

For example, I can explain how system works at satoshidice.com
There are secret key for every day of year. If you play today - you see only sha256 hash of secret key.
Secret key is random generated value of a-Z0-9.
Most of dice websites using hmac_sha512 function.
As you know, each transaction have it's transaction id (sha256 hash).
Depending on tx id lucky number is generated.
Satoshidice use's hmac sha 512 function like hmac_sha512(txid:nonce, secret_key_plain);
On day after, you can see plain secret key and verify your yesterday bet
Read http://php.net/manual/en/function.hash-hmac.php, if you use PHP

[MakeBelieve]

Is it simple to make the dice game provably fair it doesn't make sense to me at the moment.

[RoooooR]

How do people make dice sites?

Is it just something like this:

<?php
$client_choice = (user input)
$number = rand(0,1000);
if $number == $client_choice {
send bitcoins!;
}
else {
keep bitcoins for yourself!;
}
?>

The payout part for the dice game(just-dice etc..)

Code:

(1/(chance/100)*((100-house_edge)/100))

[smeagol]

It's easy to make the game, the hard part is implementing bitcoin.

[Ins]

It is not hard.
It depends on your selection: Libraries OR Bitcoind JSONRPC
if you want to use some libraries and work without bitcoind - it would be enough harder.
It will be easier if you will use JSON RPC it is easy to create address, check transactions, send money

[jontstaz]

It is not hard.
It depends on your selection: Libraries OR Bitcoind JSONRPC
if you want to use some libraries and work without bitcoind - it would be enough harder.
It will be easier if you will use JSON RPC it is easy to create address, check transactions, send money

Exactly this. If you want you can even use the Block chain RPC API.

[smeagol]

It is not hard.
It depends on your selection: Libraries OR Bitcoind JSONRPC
if you want to use some libraries and work without bitcoind - it would be enough harder.
It will be easier if you will use JSON RPC it is easy to create address, check transactions, send money

Exactly this. If you want you can even use the Block chain RPC API.

It's just that I don't want to hit the cap on the API and get blocked

[jontstaz]

It is not hard.
It depends on your selection: Libraries OR Bitcoind JSONRPC
if you want to use some libraries and work without bitcoind - it would be enough harder.
It will be easier if you will use JSON RPC it is easy to create address, check transactions, send money

Exactly this. If you want you can even use the Block chain RPC API.

It's just that I don't want to hit the cap on the API and get blocked

I wasn't aware of a cap. What is the cap out of interest?

[smeagol]

I wasn't aware of a cap. What is the cap out of interest?

Requests in 8 Hours: 3 (Soft Limit = 28800, Hard Limit = 28900)
Requests in 5 minutes: 3 (Soft Limit = 700, Hard Limit = 725)

(That is from their site)