It's a really good question. It sounds like a contradiction. It is extremely hard. The foreign ownership examples that I know of have to do with a whole bunch of digging and research in some cases.
In one of the examples that I mentioned about the connection and that I've testified about before, it's because that person was traced through the B.C. online registry as the single director and shareholder of a company that's investing in B.C. They also were outed in the money-laundering investigation in B.C., so it was easy to track them and know who they were. It's in the public record. In another case, it was just detailed online research based on intel given by someone in the industry. In other cases it's just known. The companies admit it. They know they're foreign-owned.