The price of bitcoin is continuing to crash, dropping as low as $173 early Wednesday, according to stats from CoinDesk. It is down from about $244 just a day before, a drop of nearly 30%.

Some people are beginning to worry that bitcoin is stuck in a self-reinforcing negative price cycle in which bitcoin hoarders are being forced to sell bitcoin to meet their dollar-based costs, and the excess supply of bitcoin cheapens its price — which makes dollar costs and debts even more "expensive" for bitcoin holders.

At the time of writing, the price continued to fluctuate at about $195.

The price of bitcoin over the past week. CoinDesk

The virtual currency is looking increasingly beleaguered, and its price had been dropping steadily in recent months. At the start of 2014, bitcoin was trading at as much as $1,000 a coin. Today's value is just a fifth of that. Here's a longer-term chart:

The declining price of bitcoin over 2014. CoinDesk

Just Tuesday, the currency broke down through the $250 barrier for the first time since November 2013, prompting worries over further drops. The effects of the crash are already being felt, with one cloud mining service forced to temporarily halt operations because its service was no longer profitable because of the low price.

CoinDesk speculated on Jan. 6 that short-selling might be responsible for the recent drop. However, TradeBlock's Greg Schvey suggested to The New York Times that the market might be trapped in a vicious downward spiral: Mining operations and other cryptocurrency services "have very real fiat-based liabilities that they have to pony up for, and to do that, they're going to have to sell bitcoins." This drives the price down, leaving their coins less valuable and forcing them to sell even more.

There has also been a slew of bad news and regulatory woes for bitcoin recently. Earlier this month, the news broke that the bitcoin exchange Bitstamp had been targeted by hackers, who managed to steal $5 million in the virtual currency. It is a reminder of the security issues that face any virtual currency seeking mainstream adoption, and it brings back memories of the infamous exchange Mt. Gox. Responsible at its peak for 70% of all bitcoin transactions, it shuttered in February 2014, with $450 million in bitcoin missing.

Combined with bitcoin's reputation as an enabler for criminal activity, it is likely this public-image problem is hindering mainstream adoption. As one commenter on the discussion board Hacker News remarks, bitcoin is an "even worse" investment than gold, because "normal people at least have a decent idea of when their gold is secure. A non-techie just has to trust that the online bitcoin provider or author of the wallet is doing what he/she really says and in a secure fashion."

CoinDesk reports that Nasdaq's trading blog predicts the virtual currency will ultimately stabilise at about $140, which is "a slight premium to the level it was trading at, around $120, before the bull-run in the autumn of 2013."