Bitcoin believers gathered in Miami for what organizers say is the world’s biggest annual bitcoin convention, though it was quite a bit smaller than last year. It drew less than half of the 35,000 attendees who went in 2022. Of course, a lot has happened in the crypto world since then. A little disaster called FTX, a crypto-friendly bank failure or two. Not to mention the price of bitcoin has taken a dive, from around $40,000 during last year’s event to about $26,000 this time around. Marketplace’s Meghan McCarty Carino spoke with senior reporter Matt Levin, who was there to take the pulse.