The Enforcement Directorate (ED) has seized its biggest-ever cryptocurrency worth Rs 1,646 crore in a money laundering investigation into a fraud investment scheme called BitConnect. The scheme, which ran between 2016 and 2018, promised investors high returns through a proprietary trading bot but was found to be a sham. The ED tracked transactions through the dark web and seized the cryptocurrency from numerous wallets. This is the agency's largest-ever seizure of virtual digital assets and the investigation is ongoing.