the private keys Hex in my first massg is inputs for the hashes as it show in the pic above !
Take note that
Hash is a one-way function.
If you hashed your private keys, then there's no way to restore them from the hash unless the hashing algorithm that you've used is broken.
The "
solved!" in the article is about the demonstration of Bitcoin's mining, in which the author is trying to generate a hash that starts with '0'.
The last hash starts with zero so he mined his sample block.