This is a terrible idea.
A big part of blockland is sharing your creations and letting others save them so they never die. I remember I was a savewhore back in V8, and I got some MIGHTY fine builds that no one knows about anymore, as clans such as TBC are dead.
If you don't want people saving your bricks, play in single player, or only with your friends.
OR put your name hidden in a save.
I'd find it the biggest compliment in blockland if someone saved my build and tried to say it was theirs. They must think it's REALLY good and want to get credit for it.