According to Coindesk, former Coinbase user and Bitcoin researcher Jim Harper is currently prosecuting the US Internal Revenue Service (IRS) for illegally obtaining private financial records to recover taxes. Last August, Jim Harper received a letter from the United States Internal Revenue Service (IRS) requesting him to pay cryptocurrency-related taxes. Harper accused the IRS and its commissioners and up to 10 agents of infringing his privacy and due process in a 26-page civil lawsuit, violating the Fourth and Fifth Amendments to the US Constitution. Harper said that the IRS has never disclosed how to obtain information about its Coinbase account. This information may come from the 13,000 account records seized by the IRS agent from Coinbase in early 2018.