Odaily Planet Daily News According to a document, the U.S. Securities and Exchange Commission has dropped a three-year investigation into blockchain software developer Hiro Systems (formerly Blockstack), which raised $70 million through token sales between 2017 and 2019. The U.S. Securities and Exchange Commission's enforcement division said in a letter to Hiro in an attachment to the document on Friday: "Based on the information we currently have, we do not plan to recommend that the Commission take enforcement action against Hiro Systems PBC (formerly Blockstack PBC)." (CoinDesk)