PS. I suppose you view those funds as good things. Well, I have a very negative opinion of them: they are trying to sell bitcoins as 'safe fabulous investments' to people who do not understand what bitcoin is, and therefore do not understand the risk.
In fact, I believe that the funds are even riskier than bitcoin itself. See SMBIT suspension of redemptions (withdrawals). Have you read the "risks" section of the Winkles' filing?
Have you read the GLD prospectus?