I'm planning to participate in this jam, and I want to make sure I'm playing fair.

Is there a preferred way to prove that I only used 60 minutes to make my game? Should I record my screen, take screenshots with timestamps, or is it just based on trust?

If you look into the overview of the jam. It says that it is best if you publish a youtube video of your full making of the game. It also says that you should use the tag #60minutejam