There is a flow step action called "Change Program Data" where you can change the success to either true or false, and change the success date. You could certainly have a trigger looking for a lead becoming known and changing their success and success date in your different content programs to true and to today's date (or any other date).
Vivi how would that play out in an automated process, though? Doesn't seem like the flow would know WHICH program to change the program data for. Or am I missing something?