Fishy story. Can you prove ownership of 18wPAqgrHYBoNXrxV6w7kc8dVdTfkCCrFC by signing a message with your private key?
This will validate somewhat your story. If you can't provide this then you never owned the bulk of these coins and your story is disproved.
yes that will little bit help to prove that you are really sure that address is yours,but i think this is will not help you to get you bitcoin and litecoin back to your wallet. feel sad for your losing.