As hinted at in the article -- via a bitcoin exchange. BitPay in this case. BitPay is unlikely to be a title agency, so likely no title insurance. I guess this kind of transaction can make sense if it's difficult for the buyer to change BTC for USD -- KYC and all that. For a $1.6M property I don't really see the point.

The same way an all cash transaction would be handled, I imagine.

In this instance, Martis Camp used BitPay and received USD in their bank.

Bet they wished that they kept the 7400 BTC instead.