roubini. >> mr. van valkenburg? >> chairman carpo, ranking member brown, members of the commute. thank you for the opportunity to speak with you. my name is peter van valkenburg a director of research at coin center an independent nonprofit focused on the public policies of cryptocurrency and public block chain networks. what is bit coin? bit coin is the world's first cryptocurrency and it works because of the world's first public block chain network. what does bit coin do? it's simple. it lets you send and receive value. to and from anyone in the world. using nothing more than a computer and an internet connection. now, why is it revolutionary? because unlike every other tool for sending money, over the internet, it works without the need to trust a middleman. the lack of any corporation in between means that bitcoin is the world's first public digital payments infrastructure. and by public i simply mean available to all and not owned by any single entity. now, we have public infrastructure f