Fort Knox Blocks is a term used to describe the INGOTS of gold stored in the United States Bullion Depository at Fort Knox, Kentucky. The INGOTS are made from gold bars that have been melted down and cast into a specific shape. The gold is then stored in a secure vault, protected by multiple layers of security. The INGOTS are used to back up the U.S. dollar and other currencies, and are also used for international transactions.