Now the keys are not compared across all tags, because Using third-party plugins like CMI kits, the tags change slightly, which makes it impossible to recognize their original appearance. Now the comparison is based solely on material and name (Thanks typunn for report)
Added the command /lbase showkeys which allows you to see all worlds created by the player (/lbase showkeys Notch)
added the command /lbase givekey which allows you to give the player a lost key (/lbase givekey Notch LiteBase_1_89ea5b1e-a0d8-4373-b1ee-bc8d5613a7bb)