Steven Nerayoff, an early adviser to Ethereum and blockchain consultant, has filed a $100 million lawsuit against the law firm Covington & Burling. Nerayoff alleges that the firm mishandled his defense in a 2019 extortion case by advising him not to share exculpatory information with federal prosecutors. The lawsuit, filed in New York state court, claims that Covington's advice led to years of unnecessary legal battles. Nerayoff specifically accuses the firm of negligence and not sharing clearly exculpatory evidence. This case highlights the significant legal responsibilities and potential liabilities for law firms handling high-stakes cases in the blockchain and cryptocurrency sectors.