Don't miss CoinDesk's Consensus 2022 , the must-attend crypto & blockchain festival experience of the year in Austin, TX this June 9-12. Chinese crypto mining rig maker Canaan (CAN) on Thursday morning disclosed it has come under the gaze of the U.S. Securities and Exchange Commission (SEC) for its ties to Beijing. At issue, according to the SEC, is Canaan's use of an auditor for its 2021 annual report that the U.S. Public Company Accounting Oversight Board (PCAOB) could not fully inspect or investigate, said the company in a filing . Said auditor was KPMG Huazhen LLP. Finalized in 2021,...