What is the EscrowService keychain item?
Well, Lakitu is the turtle that rides in a cloud and throws spiny bombs at the hero of the Super Mario Bros game.



However, I have no such key in any of the Macs which I have enabled iCloud keychain sync, so despite the extremely evocative name of com.apple.lakitu I'm not so sure it's part of the default setup unless it's a placeholder for someone that hasn't yet allowed any keychain items to be stored for syncing?



My only guess is that it holds a key until you establish your syncing or if you do not choose a security code and it stores a self generated code rather than using just your iCloud keychain pin to sync. If you haven't enabled an actual long form security code or added a second device that could be a reason why I'm not seeing this entry and you are.