How do I know you're not all sock puppets of him? Clearly, the only solution is for everyone to keep a copy of it themselves.
Edited comments have an asterisk after the date, the lack of this asterisk indicates the comment has not been edited. Though this does not work for top level posts.
I would like to make a prediction, but I'm not ready to raise the subject of the prediction just yet. So to show that it was not just obvious in hindsight, and to strengthen my precommitment to write an article about it later, here is the sha1sum of my prediction: 9805a0c7bf3690db25e5753e128085c4191f0114.