By Luc Olinga Allegations of crime tied to crypto until now have mainly concerned scams, rug pulls and money laundering to circumvent sanctions. It is another blow for the crypto sphere. Investors have been wondering whether the cryptocurrency market has bottomed after weeks of falling prices, amid concern about the economy’s health and questions about a potential UST and Luna coin scam. Now, federal authorities have filed the first charges concerning insider trading in the sector. Nathaniel Chastain, 31, has been charged with one count of wire fraud and one count of money laundering, prosecut…