If that is full bright sunshine in a white bathroom then 1 minute might be about right. Otherwise it seems like too short an exposure for a camera that is more than f/300 and a paper negative indoors. I'm guessing the pinhole might be too big. But it seems to be too much... I think it would have to be too big by a lot to produce this level of blur. Maybe the camera moved? I advise to try again, careful not to move the camera before spending time on another pinhole.