Money Repository or Money Warehouse

I am doing research on the possibility of starting a money repository. The money repository is essentially what Hülsmann terms a money warehouse.

This money repository serves the function of a bank, with the intent that it is a 100% reserve and the reserve is commodity backed money (most likely gold).

Has there been actual businesses or modern case studies on rivalries based on the idea of competing money repository/money warehouse? Are there any business in the world today that stores money at 100% commodity reserve? The closet thing that comes to mind is GoldMoney.com

Public storage companies come close. I think they’re safer than banks because they are not regulated like the banking industry, thus, there are more markets that keep them in line.