Bitcoin tests key support as BTC faces fourth weekly loss

Key takeawaysBitcoin, Ethereum and XRP are heading toward a fourth consecutive week of declines.
BTC is down more than 2.5% this week, while ETH and XRP have lost over 4% and 5%, respectively.
Bitcoin trades around $77,900, just above its 100-day EMA at $77,814.Major cryptocurrencies extend October declines
Bitcoin, Ethereum, and XRP remained under pressure on Friday, putting all three on course for a fourth consecutive weekly loss since early October.
Bitcoin has declined more than 2.5% so far