I gather your explanation of Bitcoin is yet to be written.
Silas did say this was:
a blog post explaining the relevant cryptographic re-requisites.
It doesn't have much about Bitcoin - and instead covers the basics of digital signatures and hash functions.
We've started a habit of creating periodic Bitcoin threads to confine discussion thereof to those threads and prevent excessive proliferation of Bitcoin topics in the discussion section. Here is a link to the last one, which links the other discussions. Lot's to talk about, and another bounce in Bitcoin's value (up to 33 then down to 24), so share your links and thoughts!