Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion
I'll dig through my post history, and find the clearest to day exposition of the process. Just for you. Well, you and everyone else reading. 
OK, I found the post. It is a skeleton which assumes some previous knowledge, but provides the basics for those interested.
https://bitcointalk.org/index.php?topic=178336.msg22405941#msg22405941
Interestingly, I needed to link to a post directly before my post of interest. I still see the post, but am unable to link to it. More overzealous moderation? Someone erasing my previous history? I dunno.
In case I am shadowbanned - JJG - here is your response that quotes the most salient portion:
https://bitcointalk.org/index.php?topic=178336.msg22411843#msg22411843