Bitcoin briefly crashed to $79,000, losing more than 8% in four days as October’s rally hopes took a beating.Ethereum, XRP, and Solana suffered even worse losses, with traders bracing for more volatility ahead of the October 10 flash crash anniversary.U.S. stocks fell as expensive oil and a tech selloff dragged the Nasdaq down 1.2% and the S&P 500 down 0.6%.Oil prices surged 4% amid Trump’s Iran war threats, while Treasury yields eased after hitting 24-year highs.