The cryptocurrency industry isn’t replacing Wall Street just yet. But inventors and entrepreneurs are working on it, with some initial success, albeit modest. In this case, an option premium of 0.0202 bitcoin ($217 at the time) paid via a smart contract may have just become the proof of concept. The latest target for blockchain disruption is options trading tied to the Standard & Poor’s 500 Index, the main benchmark for U.S. stocks. It’s a massive market, with roughly $400 billion of the options changing hands every day last year, on average. Under the current setup, Wall Street firms typically execute the trades and ... (full story)