If all these entities check bullion holdings, who has access to my personal profile information?

Your profile information is accessible only by a small team of Silver Bullion officers in Singapore and the Singapore financial auditors. None of these information are released to third parties unless required by law.

There is no legal obligation on Silver Bullion to any foreign government, including any foreign tax authority, regulator or any foreign public authority to provide information on any customers or any transactions performed under the S.T.A.R. Storage Agreement. 

From a regulatory standpoint in Singapore, bullion kept through S.T.A.R. Bullion Storage is not considered a financial product but a physical good and does not fall under the reporting requirements typical for financial products. Vault operators and bullion auditors process information with the anonymous S.T.A.R. Owner ID.