when will the courses for bitcoin engineer start I don't have an exact date and the but I know we're hoping to launch our partnership with a tech University for a massive online open course sometime in the fall of this year we're on October hoping and then our Bitcoin association for more online education curriculum we're hoping to get some of that play and beer do you have a timetable for change in a DAA the difficulty adjustment algorithm Tim Donovan gosh all these probe questions Steve what do you have to say about that I I get asked