Yes.

When purchasing gold bars and gold nuggets, the bank will issue an invoice. The invoice will record in detail when the gold bar was purchased, the number of grams of the gold bar, the unit price purchased at that time, purity and other information. For gold and other valuables, whether it is recycled by a bank or a gold shop, the seller needs to provide proof of the source of the gold bars. The invoice or receipt when purchasing the gold bars is one of the important evidences.