The price of ether, the cryptocurrency of the ethereum network, fell below $400 on Thursday for the first time since November.
Bitcoin's price is back below $8,000, a move that comes amid a broader decline in the global cryptocurrency market.
Bitcoin's price dropped sharply for the second day in a row, despite recovering to past $10,000 after Wednesday's fall.
Bitcoin's price fell more than $1,000 on Wednesday, dropping below $9,500 before recovering back above that level.
After a January correction which saw bitcoin shed $8,000, the world's largest cryptocurrency began making a comeback on Tuesday.
As might be expected, Tuesday's Senate hearing touched on cryptocurrencies' volatility. But the head of the CFTC put the matter in perspective.
Bitcoin prices dropped below $7,00 for the first time since mid-November on Monday.
The price of bitcoin has fallen below $9,000 for the first time in two months, representing a decline of roughly 11% on the day.
What happened after all the fear, uncertainty and doubt of 2017? Bitcoin became stronger than ever, according to developer Jimmy Song.
Bitcoin's price has dipped below $18,000, marking a decline of more than $1,300 since the start of the day's trading.