Originally Posted by rrgg

V9 - You can get an easy "written" confirmation by logging in at Chase and asking through their message system. Just ask them to remind you of the terms of the sign-up bonus: number of points to expect, amount of spending required, and the time limit. That way you'll have some evidence in case things go haywire later.

If you're just nervous and want a quick answer you can call. A lot of people take screenshots while applying to avoid this issue.