I had this great idea, if people signed off on their property with a encryption key, theft could be detered by encryption. When someone buys something the store would sign off their key to your name with the blockchain. A mini block chain for property rights that can be signed off when given to someone else establishing a line of ownership that would be indisputable, I think andreson has been working on a way to prove who the ownwer of a private key is. 

So what do you think, how can encryption mitigate property disputes ?