The domains are obviously trusted to a degree. The objective of the hash is just to allow a content addressed[0] clientside web cache, and avoid talking to them

The domains are obviously trusted to a degree. The objective of the hash is just to allow a content addressed[0] clientside web cache, and avoid talking to them most of the time. Good for privacy, security and load times. [0] http://en.wikipedia.org/wiki/Content-addressable_storage http://en.wikipedia.org/wiki/Content-addressable_storage