When you make a purchase, the exact amount you order is bought on your behalf, attributed to your account, and placed in the vault at the location you chose. If you purchase bars that have serial numbers, you will be provided with the serial numbers of those in your account. Bullion is managed in shared storage and not tracked by individual coins. However, the full balance of all accounts is kept in the vault at all times, and your full holdings are completely accounted for at all times. Our internal records are reconciled with the vaults on a daily basis, and the contents belonging to HAA customers at each vault are verified semi-annually by Inspectorate, a Bureau Veritas company.