. >> thank you, chairman crapo, for holding this hearing. thanks to the two witnesses. mr. valkenburgh, welcome. today falls just shy of the tenth anniversary of block chain and bitcoin being introduced to the world, october 31, twai2008. you can't blame some americans for hoping that an alternative banking system would be created that would be superior to the one in shambles at that time. bitcoin and other cryptocurrencies like it promised to make payments faster and easier and cheaper and to eliminate a reliance on risky financial institutions whose failures harmed workers and families and all of our communities. the last ten years, unfortunately, has shown that misconduct, fraudulent investment schemes, and cyber security threats are not unique to the traditional financial system. when a cryptocurrency goes bust or reportedly supervised exchange fails, it's often hardworking americans left holding the bag. we want to see innovations in the financial system, innovations that help americans keep more of their money by avoiding fees or that make it easier to borrow for a sm