Bitcoin rose 1.44% to $81,491.60, while Ethereum gained 3.17% to $2,667.35 as the crypto market continued its recovery on Sept. 21. CoinGlass data put total Bitcoin open interest at $56.15 billion and 24-hour spot trading volume at about $2.86 billion. Gate ranked second across the market for Bitcoin contract open interest at $5.25 billion and for Bitcoin spot volume at about $349 million. Ethereum open interest stood at about $35.23 billion, with 24-hour spot volume of about $2.18 billion. Gate ranked second for Ethereum contract open interest at $3.38 billion, while its Ethereum spot volume of about $325 million ranked third across the market.