On July 8, Paul Grewal notified Coinbase that he was resigning as chief legal officer and corporate secretary, effective July 31. The company disclosed the departure in an 8-K filing the next day, and by Thursday evening the announcement had rolled through crypto media with the tone usually reserved for a retiring general. Grewal will move into an advisory role from August 1 through October 31, collect a lump sum equal to 3 months of base salary when the advisory period ends, keep the restricted stock units scheduled to vest on August 20, and remain on the board of Coinbase National Trust Company, the entity behind the company’s federal trust charter push at the Office of the Comptroller of the Currency. He says he is…