I thought that Asicminer sent 1 satoshi per share to identify how many shares belong to each address.  115tTroRo3B9ZDQ6ATJGDCHcNEVbjJoZnF looks like the address used to send both dividend payments and satoshis, but it looks like the satoshis stopped being sent after 2013-05-29 (https://blockchain.info/address/115tTroRo3B9ZDQ6ATJGDCHcNEVbjJoZnF?offset=100&filter=0).  Did they stop doing this?  Isn't this the only official way to verify ownership of shares?