【Total Bitcoin Contract Open Interest Across the Network Drops to 61.2 Billion USD】On December 21, according to Coinglass data, the total open interest for Bitcoin futures contracts across the network is 627,450 BTC (approximately 61.2 billion USD). Among them, the open interest for CME Bitcoin contracts is 202,500 BTC (approximately 19.71 billion USD), ranking first; the open interest for Binance Bitcoin contracts is 121,850 BTC (approximately 11.89 billion USD), ranking second.