"Well, Tony, you could ask to see him or ask them a question only Terry would know the answer to... from childhood maybe." This was a risky strategy for Paolo as it depended upon him knowing the answer too. However, the need for Tony to want more proof than just a wedding ring to cough up his cash was always going to be a problem. On the plus side, Paolo was building his trust with Tony. That might give him an 'inside track'.
"Text 'em I gotta see Terry's alive."
Tony would have to wait several hours for their reply.