The Hancock frame up until I think 2009 uses 6x6 plates and posts, with 6x8 tie beams and 7x8 sills. If you are not putting joist pockets in the sills, you could probably get away with smaller timbers. From 2010 on, the frame was shrunk from 14'x16' to 12'x14'. I know the rafters are smaller, 4"x5" and the posts I think are smaller.

2009 Hancock frame with a 12'x16' addition that I designed and cut:



2014 Hancock frame:



I think you can click on the image to get a larger view. You can see the close bent spacing that allows smaller timbers to be used.