The good thing is that the goverment is not involved many times in traps. When the goverment got trapped then it is a victim of a very professional real estate scam. It is difficult to forge a fake title. But very corrupt people in the goverment can assist with doing this. Can probably be prevented by asking around in the area or on forums if there are any real estate issues around. The worst thing is if someone presents to you a fake title which is an exact copy from a real existing title. But even then there are protections around. Ask the barangay captain that you want to talk with the title owners. Most original title owners are not knowing that a fake seller is attempting to "sell" their lot. Or the multiple selling of same lot especially if it is on sale.