CHONGQING, CHINA - JULY 17: In this photo illustration, a person holds a physical representation of a Bitcoin (BTC) coin in front of a screen displaying a candlestick chart of Bitcoin's latest price movements on July 17, 2025 in Chongqing, China. (Photo illustration by Cheng Xin/Getty Images)Bitcoin tumbled as much as 6% early Friday, hovering at one point just above its critical $80,000 support level, as investors continued their flight from risk-on assets to more defensive plays. The largest cryptocurrenc ...