Can the Bitcoin Miner run offline? Is it possible to run a Bitcoin Miner offline and calculate hashes without being connected to the Internet?
You cannot earn Bitcoins mining unless you either add blocks to the blockchain or cooperate with others to do so. Without being online, you wouldn't know the current head of the blockchain (or any information based on it), so there's no way you could actually do either of those things. You could hash all you want, but you would never mine a block nor contribute towards mining one, so there wouldn't really be any reason to do so.