Subject: File No. SR-CboeBZX-2018-040
From: Cenk Usel

July 17, 2018

Dear Sir or Madam,we believe that BTC is the future of money.With the system underneath 'Blockchain' it can pave the way for greater usage of technology in many areas.Blockchain has a big potential that can solve many problems in fintec, energy sector,logistics and healthcare.With your pass the process and whole development can be faster and more efficient.Therefore please let that notice of filling fulfilled.Thank you for your attention.