There is nothing to confirm because Facebook isn't announcing anything. This is a big company like Microsoft that is being used by the government to watch over its people, Mark is not going to grill himself for announcing he has BTC even if he has some. Facebook prefers to create its own coin though.
Facebook will likely respond yes they have Dogecoin is Alistair spread such rumor about Facebook.
It was already confirmed in their quarterly filings and report that Facebook does has not bought any bitcoin to hold in their treasury. It did not mention anything about bitcoin. What other confirmation is everyone looking for?
@icopress. Agreed that the most reasonable move for Facebook is to buy and exchange or a crypto mining company, however, not an altcoin company.