Subject: File No. SR-NYSEArca-2019-39
From: John D. Littlejohn, MD

June 26, 2019

I am wholly in favor of regulation to safely allow Bitcoin to be recognized as a legitimate, regulated, trusted financial entity to be used in ETF's, and other creations to store wealth and exchange wealth. The USA is falling behind other countries in this technology. We could lead the world and improve the financial sector and prevent another bloodbath like what happened with the banks in 2008. It could conceivably be used in investment by Social Security and Medicare to solve a number of problems they face. Open mindedness, creativity, and thinking outside the box have always been America's attributes and I hope they can continue.