Quote from: SgtSpike on March 01, 2012, 10:24:33 PM

Quote from: edd on March 01, 2012, 09:49:01 PM

"Defacing" bills is against US law but it hasn't really been enforced: http://en.wikipedia.org/wiki/Where%27s_George%3F#Controversy

I'm afraid blatantly encouraging individuals to do this would give the Secret Service a reason to prosecute bitcoiners, even if it's a flimsy one.

I still prefer keeping it very simple.

Person finds bill with URL, visits website, enters serial numbers, possibly wins BTC.
Person learns that even unmarked bills may unlock BTC.
Person visits site often to check bills, investigates the BTC market and becomes immersed in the bitcoin community.
Person becomes an advocate of bitcoin themselves and begins proselytizing and spreading the word with bills marked with the URL.

Contests over how many bills you've marked, how far they've traveled, etc should just be gravy.

Again though, how would you prevent people from making up serial numbers?

The first time a note is entered, it CANNOT give out BTC, or else people will just start making up serial numbers.

I believe Phinnaeus was on the right track:

Quote from: Phinnaeus Gage on February 29, 2012, 02:16:36 AM

Quote from: edd on February 29, 2012, 01:59:51 AM

I've started working on this site but I had a concern. Yesterday, I received some brand new bills from a convenience store and noticed the sequentiality (sequence-ness? sequence-nicity?) of the serial numbers.

If all you needed was the right serial number to unlock an account, how easy would it be to create a bot to do it? Would a captcha help?

I know you could write a code on the bill along with the url, but I was kinda excited about using even an unmarked bill as an advertisement for bitcoin.

No need to worry about a bot, for each dollar bill has plenty of built-in security measures that can be taken advantage of. http://onhech.blogspot.com/2010/03/dollar-for-your-thoughts.html

Simply have a field to insert the Series and Year & Plate Serial Number & Printing Position Number and Letter.

For the example I gave earlier in this thread:

Serial Number: K28849219E

Passwords to claim the bitcoins include:

Series and Year: 2003 A
Printing Position Number and Letter: A3
Plate Serial Number: FW A 165

Quote from: Phinnaeus Gage on March 01, 2012, 04:34:04 AM

Quote

Series and Year: 2003 A
Plate Serial Number: FW A 165
Printing Position Number and Letter: A3

Therefore, your site would recognize the password as 2003AFWA165A3.