I was watching the movie “National Treasure” and thought how can I apply the lessons of this movie to Judaism. In the movie, Ben Gates (Nicolas Cage) decides to steal the Declaration of Independence. He is told that it could reveal some secret information, specially encoded by the Founders. On the back of the Declaration of Independence is a treasure map written in invisible ink (ferrous sulfate) which could reveal an ancient hidden treasure. To bring out the encryption one applied lemon juice to the back of the document. When heat is applied the ink becomes visible.
Everyone agrees that the Declaration of Independence is the most important document in US history. Similarly, the Torah is what bides Jews together for a millennium and is very important to Jews. Both documents contain intrinsic, moral messages about equality: Jefferson wrote that "all men are created equal." Genesis 1:27: "G-d created man in His image, in the image of G-d He created him; male and female He created them." Both are written on parchment animal skin with black ink. Some Jews believe in Torah codes, cryptic messages hidden throughout the Torah.
If we apply the same logic to the Torah, is it possible that the back of a Torah scroll also contains the secret location of Solomon's treasures, the Lost Ark, or even the “The Ten Lost Tribes,” which can be seen as a treasure? According to halakha, Jewish law, is it permissible to swab some lemon juice on the back of a Torah scroll?
Sources, please.