Topic: SatoshiDICE.com - The World's Most Popular Bitcoin Game - page 179. (Read 495811 times)

Thanks for the answer.

You missed addressing point 2. Will you continue to offer almost double the house edge of everyone else?

Dice sites have standardised on a 1% house edge; I can't think of a single site other than satoshidice that charges more than that.

1. This will is expected to increase a lot soon for the reason explained below.

3. Maximum bet sices will increase a lot. We will gradually increase to up to at least 100 as biggest win.

4. With bigger hot wallet, the bets with higher payout will become available again.

5. We will also offer a fast off chain game with big bankroll where you can choose any bet you would like. You will be able to create several bets per second, compete on leader boards, see your daily luck, play with nice sound and particle effects and more.

Thanks!

When do I start?

That really ins't a stupid question, but there's definitely many that are and need answering.

Dear Sir/Madam,

Do you have any vacancies?

I would like to apply for the position of "stupid question answerer" for satoshidice.

lol

Well put, we'll put this in the FAQ section!

On-chain betting:

  Each bet you place is in the form of a Bitcoin transaction. Each bet you win sends you your winnings in a new transaction.

Off-chain betting:

  You deposit some coins into an account on a website. You get to make lots of bets on the site without making any more Bitcoin transactions. You have a "balance" on the site which is really just an entry in a database. Then you withdraw your winnings to your wallet.

Pros and cons:

On-chain betting has a public audit trail. You can prove you made each bet.
On-chain betting uses a lot of space on the blockchain. Everyone node has to store every bet forever (or until we invent pruning).
On-chain betting is typically slow, since we need to wait for confirmations to prevent double-spends.

What does it mean by on-chain and off-chain betting ?

Yes, highrollers will be able to play again. Final testing and some optimisations are going on now before the release.

No, we're releasing the new off chain game within 1-2 weeks.

Good description, Dooglus. We are making the process clearer and also something similar in the FAQ. Most importantly though, is the new upcoming game that proves the fairness in a much easier way!

understood perfectly. Thanks!

First off, understand that "sending a transaction" is really several steps:

1) select some outputs to send
2) make a raw transaction
3) sign it with your private keys
4) broadcast it to the network

Note that steps 1 through 3 can happen entirely offline, and by the end of step 3 your transaction ID is known.

If you knew the daily secret, you could combine it with your transaction's ID, calculate the HMAC, and see if you would win or not. Then you could decide whether to run step 4 and broadcast the transaction, or go back to step 3, sign it again (which has a random element, and will change the transaction ID) and repeat until you get a transaction ID that you like (because it wins).

So you can't know the daily secret before you bet, or you could cheat as I just described.

The site tells you the daily secret once it has finished using it. Usually around 24 hours after it has finished using it.

All they tell you before you bet is the HASH of the daily secret. They use a one-way hash: it's very easy to get from the secret to its hash, and almost impossible to go the other way.

So you can make a note of the hash they have given you, then a couple of days later once they have published the secret itself you can hash it and check that you get the hash they gave you before you bet. That way you can be sure that they didn't cheat and pick a secret just to make you lose.

Is that clearer?

Can you give me an example?

I want to bet but i want to check by myself if everything is ok...

I mean if the function they are using is:

128 hex hash = hmac_sha512(daily_secret, "tx_id:out_index")

if i don't have the daily secret , and tx_id:out_index is known once the transaction is made, and that's when the 128 hex hash is calculated (the 128 HMAC hash it can't be known in advance as you don't have the tx_id:out_index, and to calculate the HMAC you need both, key and message), what's in this example your "They announce the *hash* of the daily secrets in advance"?.

It is already on-chain.

For a while they offered an off-chain version too, which they called "tribute", but from what I heard it was exploitable so they took it offline to fix it. That was approximately a year ago I guess.

They mentioned there will be an off chain betting in the new version of SD, but didn't mention whether they will keep the current on chain game untouched or not...

will this game ever be on-chain and not off-chain?

They announce the *hash* of the daily secrets in advance.
They announce the daily secrets themselves at the end of each day.

That way you can check that they selected the daily secret in advance (since they published its hash) without being able to know the actual secret in advance.

I am trying to understand how does a satoshidice draw work.

As far as i have understood sd generates daily two public hashes:

HMAC hash
Position hash

You can check https://www.satoshidice.com/files/daily-secret-hash.txt all the HMAC and Position Hashes up to 31.10.2014 has been released. Why did they do this, if the hashes were only released the day after the draws?

If the draw is calculated using next formula:

Resulting String = hmac_sha512(daily_secret, "tx_id:out_index")

If someone gets tx_id:out_index they could be used to win bets unfairly as the daily_secret and positions have already been released, am i right?

I spend far too much of my time looking at dice sites? idk.