Craig had a blog, where he talked about wine, food and classical music. In June 2014 it looked like this. Scroll down to the entry for 26th August 2008 and you'll see the following:
There's another archive from May 2015, where it looked like this:
So it seems that Craig edited his old blog some time in late 2014 - early 2015 and added a reference to a cryptocurrency paper. It's not even clear if cryptocurrency was a word back in 2008.