Elon Musk and Jack Dorsey agree to talk about bitcoin at an event in July On Thursday, Twitter and Square CEO Jack Dorsey promoted an event called “The B Word,” which will aim to encourage companies and institutional investors to adopt bitcoin, according to its website. The event is scheduled to take place on July 21, with speakers including Dorsey and ARK Invest’s Cathie Wood. In response to Dorsey’s tweet of the event, Tesla and SpaceX CEO Elon Musk responded and seemingly agreed to chat with Dorsey about bitcoin at the event.