Jay-Z Enters the Legal br Cannabis Business According to 'Rolling Stone,' br the billionaire rapper br will join the California-based br weed company, Caliva. He reached out to the company in search of a partnership and has signed on as Chief Brand Strategist. Dennis O’Malley, br Caliva CEO Dennis O’Malley, Caliva CEO Hova will be involved in creative strategies, br but he will also focus on social justice issues br regarding the legalization of the plant. Jay-Z's sights are set on "advocacy, job training and overall employee and workforce development.