4) what is wrong it is wrong ,
also nobody explained yet why the hashrate is only 1/4 but the difficulty is 1/7
becuase the coins have different payouts, block rewards, and final total number of coins? do you not understand math with more than 1 variable?
also, i'd like to point out you asked for proof, someone gave you proof, and now you claim the proof is wrong.
nice troll.