You&#x27;re right, for paper tickets there needs to be a trusted third party that handles them. There&#x27;s no need to send the tickets in advance, but once the sale occurs, you&#x27;d really have to send them through StubHub or another third party.<p>I see no reason StubHub couldn&#x27;t do this, of course. They could even spin it as a feature: the seller never learns your address and your privacy is protected!<p>For electronic tickets, whatever service sells the ticket could act as the trusted third party. Get the seller to provide whatever confirmation&#x2F;order&#x2F;transfer numbers are appropriate and check them with the ticket issuer&#x27;s system.