I just answered your question. I even quoted your question first, so you could readily see. > What information are we creating and what is this one-way that w

I just answered your question. I even quoted your question first, so you could readily see. > What information are we creating and what is this one-way that we can not go back? Hash functions are one-way functions that create hashes. > Do you mean to ensure that the information can not be destroyed after it was created? You seem to be commenting on the wrong subject or replying to the wrong comment. "I" do not mean to ensure anything with Bitcoin's PoW function, since I am not Satoshi and did not design Bitcoin. However, Satoshi designed Bitcoin's PoW using a one-way function. If it were not a one-way function, then Bitcoin's PoW system would be broken.