On the face of it, it is certainly odd that so much information would be required as proof of residence. On the other side, I suspect there is a reason for that

On the face of it, it is certainly odd that so much information would be required as proof of residence. On the other side, I suspect there is a reason for that, namely, someone ruined it for the rest by trying to cheat. Some parents take kids sports very seriously and I have no doubt they would go to insane lengths to skirt any residency rules in place.