anyone writing waffle about how no one owns bitcoins and that they belong on the blockchain, blah blah waffle waffle..
a few things to point out.
1. by sounding smart the authorities will perceive that as you have intimate knowledge of bitcoins. thus start investigating your finances.
They would likely investigate every applicants finances, at least those who would otherwise qualify to have a legit disability
2. the whole word "ownership" is a grey area.
It isn't to me
such as a house, do you own a house, or does the mortgage company..
You do. The mortgage company has a lien on the property for the amount of the mortgage however you are personally liable if anything happens on the property (for example if someone gets hurt in your house).
what about the bank balance sitting in a bank account and your access to it is just a plastic card with a pin number.
You own this. It is your property
3. if you have ever linked your bank account to a bitcoin exchange (mtgox/coinbase/bitstamp, etc) you might aswell tick yes, as they can find these things out. especially how much you deposited into an exchange and using the average price of that deposit day, they can estimate holdings. even if you no longer have them.
You really should not lie in the first place. If you are caught lying then you would have a serious risk of going to jail as you generally have to affirm under penalty of perjury that the information provided is correct.