Lottery

All about the BarbecueSwap Lottery!

General Lottery Details

• Cost to enter: 1 ticket = 1 BBQ

• Lottery Entry Limit: No overall limit, but only 50 tickets can be bought at a single time through the UI

• When you purchase a ticket, you will receive a random 4 digit combination, each digit ranges between 1-10, for example “3-9-8-5”. This 4 digit combination is to be used to to compare to the winning numbers for your chance to win!

The Rules to Win

In order to win any of the prizes, a user must match the 4 numbers on a ticket with the winning numbers (must be in the same position, order DOES matter).

Additionally, there are prizes for matching 2 and 3 numbers in the corresponding positions!

Winning Payouts & Rollovers

• Match all 4 numbers in the exact order = win 50% of the pot (or split the pot if more than 1 winner).

• Match 3 numbers in the exact order = win or split 20% of the pot.

• Match 2 numbers in the exact order = win or split 10% of the pot.

• 20% of the pot will always be burned

In the event of no winners, the match 2, 3, and 4 rewards will be rolled over as well. So in that situation 80% would rollover, and 20% would be burnt.

Let's look at an example! If the final 4 winning numbers are “3-9-8-5” then…

• “1-2-3-4” = match 0

• “1-9-8-4” = match 2

• “3-2-3-5” = match 2

• “1-9-8-5” = match 3

• “3-9-8-5” = match all 4

Lottery Phases

The lottery will occur every 7 days with the winning number draw occurring every Friday! Right after the winners are selected, there is a 1 hour period where ticket purchases are unavailable.

An example of the a lottery session is below:

Phase 1 - Purchase Tickets (1 hour after the previous draw ends, )

• You have 7 days to buy tickets.

• For every 1 BBQ spent, you will receive 1 ticket.

• Every ticket purchased is added to the lottery jackpot, which you can see in the upper right of the page!

Phase 2 - Lottery Draws

• The winning lottery numbers are drawn and will appear on the page.

• Each participant’s winnings will be automatically calculated based on their ticket numbers and shown on the page.

• If you won you can claim your winnings! Go tweet and share that you won!

• Additionally you can see the total results of all users who matched 2, 3 and 4 numbers

• The next lottery will start immediately after

Winning Number Draw Process

The lottery aims to be completely random. The ticket numbers given out are determined by a front-end logic:

• The 1st lottery number will be determined based on the %10 remainder of a hash encoded by the blockhash and the number of participating users at the entry deadline.

• The 2nd lottery number will be determined based on the %10 remainder of a hash encoded by the blockhash and the total pooled BBQ balance at the entry deadline.

• The 3rd lottery number will be determined based on the %10 remainder of a hash encoded by the blockhash and the timestamp of the last lottery participant at the entry deadline.

• The 4th lottery number will be determined based on the %10 remainder of a hash encoded by the blockhash and the block difficulty at the entry deadline.