I was watching Cliff High's Interview with Reggie Middleton (on Veritaseum). One point discussed was using the smart contracts to purchase stock.
When the issue of obtaining the actual certificate was brought up, it seemed that current thinking was on "derivative". This meant getting a vitual ownership and collecting on the net "financial" gain as the condition of the smart contract was fulfilled.
But there are so many real world physical assets that need registration of ownership and subsequent annual transactions (eg collection of dividends on stock certificates, payment of property taxes etc...) that the crypto gurus should consider developing apps on the blockchain to handle. This is what I meant in the last post as "a complete system to replace the present real world system" if (when?) the present system fails.
I hope this makes some sense.