Bitcoin is now harder to mine than ever before, as the mining difficulty of the largest cryptocurrency by market cap has hit a new all-time high above 20.8 trillion, according to data provided by Bitinfocharts. This represents a 1.05% increase since the last readjustment on January 9, when the mining difficulty reached a record high above 20.6 trillion, marking the biggest spike in nearly four months. Difficulty is a relative measure of the amount of computational resources required to mine Bitcoin. This value either increases or decreases after every 2016 blocks, or roughly every 14 days, depending on how quickly the previous 2016 blocks were found. The latest Bitcoin mining difficulty increase came amid reports of China-based miners facing setbacks caused by a global lack of mining chips. "There are not enough chips to support the production of mining rigs," Alex Ao, Vice President of Innosilicon, a major provider of mining equipment, told Reuters. This has resulted in "unprecedented prices of mining equipment" in China, once a dominant force on the mining landscape. The report suggests that the prices on new equipment have doubled while second-hand machines saw their prices jump by more than 50% in the past year. However, the demand for cryptocurrency is still very high, and miners are willing to pay a premium for picking up even more machines. Some are even taking out loans to do so, demonstrating their confidence in Bitcoin.