Crypto Crash Reason: Why Bitcoin Fell Below $81,000 and Altcoins Bled Even Harder

The information provided in this article is for informational purposes only and does not constitute financial advice. Cryptocurrency investments carry a high degree of risk. Always conduct your own research.Bitcoin slid under $81,000 and Ethereum lost 9% in a week. Here is every crypto crash reason behind the October 2026 selloff explained.Crypto Crash Reason Hunt: What Actually Happened Today?The crypto market is deep in the red on Thursday, 8 October 2026, and almost nothing in the top 13 escaped. $Bitcoin is trading at $80,986, down 2.9% in 24 hours, 3.7% over seven days and now 7.5% below where it started the year. Total Bitcoin market cap has slipped to $1.62 trillion.Altcoins took the harder hit. $Ethereum is at $2,432 after a 5.3% daily drop and a brutal 9.3% weekly slide, pushing its year-to-date loss to 18%. XRP is down 6.2% on the day and 27% for the year. Solana sits at $108, Dogecoin at $0.083, and Chainlink lost 7.9% in a single session. Even Zcash, the year's breakout privacy coin, gave back 15.6% in 24 hours and 18.6% on the week, though it remains up 119% since January.The only green on the board is the stablecoin pair, with USDT and USDC flat as expected. That patt...