This morning I registered an account on Bullish, set up a pin and used the provided Yubikey to test the pilot version of Bullish.com. The interface looks professional. The paper trade account gives the user $500 thousand and allows trading of bitcoin, ethereum and EOS as well as participating in liquidity pools to earn yield. I attempted several trades but was given a timestamp error so none of them appeared in my order history. I guess testing will run several weeks.