Bitcoin mining operations in the US and China are facing closures after the plummeting price of bitcoin means they may no longer be profitable.
The world's most valuable cryptocurrency is currently trading at around $4,500, having lost almost a third of its value in the space of a week.
Bitcoin mining – the process of generating new units of the cryptocurrency by solving complex puzzles – requires vast amounts of electricity to power the computers performing the calculations.
This means that the profitability of mining falls when bitcoin's price drops, and if the price falls too far then operations may no longer be economically viable.
The biggest casualty so far may be the US-based mining firm Giga Watt, which was forced to file for Chapter 11 bankruptcy this week after it was unable to pay debts of around $7 million.
"The corporation is insolvent and unable to pay its debts when due," the filing stated, according to CoinDesk.
"The corporation and its creditors would best be served by reorganisation of the corporation under Chapter 11 of the Bankruptcy Code."
Bitcoin has suffered two major price falls in less than a week, following months of market stability (CoinMarketCap)
The majority of bitcoin mining operations are based in China, where electricity costs are some of the lowest in the world.
Yet despite the cheap electricity, images and videos of mining operations shutting down in the country have been spreading across social media.
Hon Kong-based mining platform Suanlitou announced this week that it was unable to cover electricity fees for a 10-day period in November, according to the South China Morning Post.
Another group of Chinese cryptocurrency miners also reportedly shut down 20,000 mining rigs due to the fall in profitability.
It is not clear what the future holds for the price of bitcoin, with some analysts predicting more falls, while others expect the market to turnaround before the end of the year.