1.7.10 block protection

im looking for a plugin that will protect any blocks placed by a player, ive seen a few but they are all outdated and have some bugs that would make them hard for me to use, I want the protection to be automatic (no /claim and such) It would also be nice to have a friend list type thing to allow multiple users to edit. reason for this is that I am running a server with a creative world and I want it to be free build, (no plots) Oh and another useful feature would be to enable it in specified worlds. are there any like this out there?

 

Wait, any block, that is placed by an specific player? If you have a hundred of players, you have a big, big, big yml file/MySQL, I think. I can check if I can do this, but I can't promise anything.