The global cryptocurrency market, after reaching an intra-day high of $1.42 trillion, tanked 3.7 per cent to close at $1.37 tn as of 9am IST today, triggered by fresh fears of the fast spread of the delta strain of Covid-19. The total crypto trading volume saw a modest growth by 2 per cent. Globally, multiple market indices showcased a daily decline, as investors sought safer investments with banks and treasuries.