On Friday, she became the first person to buy a $250,000 Virgin Galactic space ticket using bitcoin, the world’s most popular digital currency. So said the company’s CEO, Sir Richard Branson, during an interview on CNBC. He didn’t identify his latest Bitcoin-funded space tourist by name. Through Virgin Galactic, she declined our request for an interview.

Virgin Galactic says it has sold more than 600 tickets for its space tourism trips, which will offer customers an expensive but thrilling sub-orbital flight to the edge of space.