This could be useful for some situation, like when a public sugar cane farm has a lot of trusted player, and some day the farm got destroyed, the owner of the farm can check the log to see who has gone there and guessing who the one that destroy the farm. Or other situation like a public animal farm, when there is so many trusted playert there and some day the spawner is gone, the owner can see the log to see who have been there and guess the player that do it. For the look probably just a log with the name of the player and then telling if they are trusted in the claim or not, and then the time they visit (in international time and how many time ago it was) and thats probably it. Sorry for my bad English xD