It’s built into the game but doesn’t always go off. The process to convert the entire CraftyMynes system to be UUID compliant is a massive undertaking. That being said, I have been working towards a future where everything is based off uuids. It started with verifying players to their accounts on the forums, then I created my own username resolving service to bypass mojangs rate limits. I am currently working on binding homes to uuids but there is still much to do. Bans are all recorded in the system by username, every rank is by username. I am just one guy, I try my best to get it done but it is a huge task.
Hopefully I will have something for making private TP requests soon which will also involve making homes based off uuids.