The proof of time is when you support the network, and regardless of the power of your machine, you get a reward, it all depends on how much time you support the network (This is short). Example: You maintain a network for 24 hours (store data, process traffic). Exactly after 24 hours you will receive a reward. You can maintain the network interruptions, today 3 hours, tomorrow 12, etc. until you have 24 hours, and the number of necessary network support time can vary depending on the network needs. On beta version we will post WP about PoT.