Ruben Somsen is a Bitcoin Sorcerer. He does protocol design in order to  enhance Bitcoin. He also helps maintain the bitcoin-dev mailing list, am  co-host of the Unhashed Podcast , and he's the organizer/founder of the  Seoul Bitcoin Meetup.    

Music: "Welding The Steel Frame" by Wintergatan This track can be downloaded for free at www.wintergatan.net Free license to use this track in your video can be downloaded at  www.wintergatan.net