Resuable JWT with LTI Advantage

[EricKean]

Hi,

I've (finally) gotten my app to use LTI Advantage in order to pass back grades.  After each launch, Canvas sends back a JWT with my library uses to passback the score.  I'm currently saving the JWT in my database and using it until another launch and then saving the "updated" JWT to use for the subsequent grade passback.  I  put updated in quotes since I'm unsure whether this will ever change for a given user-assignment.  In other words, can I save the JWT from the initial launch and then just re-use in order to pass back the grades?

Thanks so much,

Eric