Hello fellow bitcoiners, Off the back of the successful raffle of a 50Gh 1 week mining contract, I am proud to offer a new raffle to all of my fellow mining enthusiasts! You read that right. I am ready to raffle one of my BFL singles away. Each ticket is only .25 BTC each! Imagine, turning .25 BTC into a Butterfly Labs Bitforce single, a return of at least 480 times the cost of a single ticket. So you’re probably wondering, “how can I verify that gigavps has a single to raffle off?” My fifteen singles hashing away -> http://bit.ly/Ix3ktVGigavps’ farm monitoring page (all the singles are on rig 100) -> http://bit.ly/IxUZns Rules of the contest:- The odds of winning this raffle is 1 / (total # of tickets sold)
- This raffle will end on Friday, May 4, 2012 at 5pm EST.
- You may purchase as many tickets as you like.
- Whether buying a single ticket or bulk tickets, each ticket will have its own ticket number and therefore a unique hash.
- The only piece of information you need to submit is your email address. This will be hashed so it will not be given out to the public.
- The raffle will be decided by:
- We will combine the SHA256 hash of each email address with the hash of your ticket number and the first block hash to be found after the raffle ends. Here is an example:
- sha(sha(email) + sha(ticketNumber) + hashOfBlockFound)
- The lowest hash wins!
- Once the results of the raffle have been verified, the single will be shipped to the new owner within 48 hours.
Enjoy and good luck! Best regards, gigavps |
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ah thanks, bummer i did not win, but i will try again next time!!
Speaking of next time, how often would you like to see raffles on the forums? I want to raffle off a BFL single and I will, but I'm wondering about the timing. |
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and how do we know who had ticket #562?
Ah, I see what you're asking. Well cncguru claims to be the winner. If you know the email that he used when he purchased the ticket, you could check the sha256 has to see if it matches. That would confirm the email hash part of the Winning Equation. I do not know how the ticket numbers were issued and when placed for the second part of the equation. The third part was just the block hash. cncguru has confirmed he owns the address that purchased the tickets. As for ticket numbers, they are based on the sequence in which orders came in to bit-pay. |
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and how do we know who had ticket #562?
Hi arij, Please look back through the thread on pages 8 and 9. Thanks, gigavps |
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If the winner could please contact me via PM so that I can verify they own the email address, I would appreciate it.
We have a mining contract to fulfill!
Thanks to everyone for playing and I wanted to ask you guys a question.......
Would you be interested in a raffle for a BFL single?
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Looks like we have independent verification and I can confirm ticket #562 is the winner! I used a little javascript to verify so that it is more accessible to others. (function($) {
$(document).ready(function() {
var $body = $('body')
, text = $body.text()
, lines = text.split('\n')
, lowest = null
, lowestTicket = null
, decimal
, lineArr;
for (var i = 0; i < 885; i++)
{
lineArr = lines[i].split('\t');
decimal = parseInt(lineArr[lineArr.length - 1], 16);
if (lowest === null)
lowest = decimal;
else if (decimal < lowest)
{
lowest = decimal;
lowestTicket = lineArr[0];
}
}
alert(lowestTicket);
});
})(jQuery);
And the HTML page needed <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script type="text/ecmascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/ecmascript" src="script.js"></script>
</head>
<body>{output from pastebin}</body>
</html>
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I am working on calculating the winner now.
+ in my posts above is string concat
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Block 177473 has arrived! Here are the results -> http://pastebin.com/Tgv098AW5 columns now (ticket number, email hash, ticket number hash, blockHash, final hash) The final hash was calculated by: sha(sha(email) + sha(ticketNumber) + hashOfBlockFound) Let's see who won! |
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All entries for the raffle can be found here -> http://pastebin.com/kb0vmvgQUse this service to figure out the hash of your email -> http://hash.online-convert.com/sha256-generatorOnce you have the hash, you can search the paste bin text for your tickets. There are three columns, ticket number, hashed email address and hashed ticket number. Block number 177473 will determine the final hashes for all tickets. |
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So, if the time is up now, can we have a table before the first hash block, so any manipulation is out of the question? Edit: sorry my error with time zones.  In any case I think it should be nice to have the table published immediately after the raffle closes. So things should happen in this order: 1. 3pm arrives 2. We shut down all purchase buttons 3. We publish the hashed emails with ticket numbers and ticket hashes 4. We declare the block hash that will become the third part of the final hash for each ticket 5. Block arrives 6. Publish the results with the block hash and final hash without determining a winner 7. Allow third parties to declare which final hash is the winner 8. Verify third party results |
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With ~5 hours to go, your odds of winning the pot are now:
1/827
Good luck to everyone who has already purchased a ticket. Better hurry if you haven't bought yours yet!
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How many more hours?
With ~5 hours to go, your odds of winning the pot are now: 1/827Good luck to everyone who has already purchased a ticket. Better hurry if you haven't bought yours yet! |
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I bought 801 tickets. What are my odds?
Sounds like Matthew really wants to get into mining..... |
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With ~8 hours to go, your odds of winning the pot are now:
1/802
Good luck to everyone who has already purchased a ticket. Better hurry if you haven't bought yours yet!
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With ~8 hours to go, your odds of winning the pot are now:
1/802
Good luck to everyone who has already purchased a ticket. Better hurry if you haven't bought yours yet!
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I think bitlotto is seeing that interesting pots like my shameless plug below can make money. https://bitcointalk.org/index.php?topic=77442.0The problem I see is asking others to invest quite large sums of money for such small returns. The lending subforum easily offers 1.5% for your coins per week with relatively well established players. |
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With ~21 hours to go, your odds of winnning the pot are now:
1/773
Good luck to everyone who had already purchased a ticket.
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