Bitcoin's (BTC-USD) wild swings continue through the weekend, taking a downturn on Sunday, sliding to as low as ~$31.1K.In the past 24 hours, the world's largest crypto drops ~13% to $32.9K as of 2:22 PM New York time.One metric gauging implied volatility on bitcoin, similar to the U.S. stock market's VIX index, topped 130, Bloomberg reported, exceeding the VIX's all-time high.The slump extends a volatile week for bitcoin as China and the U.S. in different ways vowed to tighten cryptocurrency regulation and Elon Musk has tweeted statements that appeared to condemn then support bitcoin.Ethereum (ETH-USD) drops 16% to $1,292.20, dogecoin (DOGE-USD) falls 13% to 29 cents, Binance Coin (BNB-USD) slides 25% to $231.46, Cardano (ADA-USD) slumps 21% to $1.16.