BlockBeats News, December 13th, according to Alternative Data, today's cryptocurrency fear and greed index is 23 (yesterday was 29), indicating a return to the "extreme fear" zone.Note: The fear index has a threshold of 0-100 and includes the following indicators: Volatility (25%) + Market Trading Volume (25%) + Social Media Hype (15%) + Market Surveys (15%) + Bitcoin's Dominance (10%) + Google Trends Analysis (10%).