According to QZ's July 25 news, a court record showed that the US authorities are still investigating the company because it suspects that blockchain company Long Blockchain is using complex insider trading operations to pull up share prices. According to the search warrant, the US Federal Bureau of Investigation (FBI) is looking for evidence of long blockchain stocks associated with insider trading and securities fraud, and is focusing on the company's two heads: Oliver Lindsay and Gannon Giguiere, both Arrested on suspicion of involvement in securities fraud in an independent company. It is reported that Long Blockchain, formerly known as Long Island Iced Tea Corp., was renamed on December 21, 2017 and transformed into a blockchain company. At that time, its share price rose by nearly 300%. On April 12, 2018, Long Blockchain Corp was finally forced to withdraw from the market by Nasdaq because it did not meet the stock market value conditions in the continuous listing criteria, and the company used the block name concept to speculate on stocks through the name change method. A survey of US financial regulators.