“I want to make a big announcement,” said Faryar Shirzad, the chief policy officer of Coinbase, to a nearly empty room. His words echoed across the massive hall at the Bitcoin Conference, deep in the caverns of The Venetian Expo in Las Vegas, and it wasn’t apparent how many people were watching on the livestream. Then again, somebody out there may have been interested in the panelists he was interviewing, one of whom was unusual by Bitcoin Conference standards: Chris LaCivita, the…