I'm considering buying stocks in a brokerage account and selling equivalent contracts for bitcoin. This would allow anyone to invest in equity markets without compromising their identity or jumping through hoops. My broker would verify the assets in my account, and I would publish an exhaustive list of my liabilities to demonstrate that I am solvent.

Would you be interested in such a service?

What price would you pay? (i.e. you would exchange $10X for a contract worth $100 of google stock. price = X%) I would have to cover my trading costs.