Polish authorities, regulators, and banks issued a sweeping statement warning of the risk of bitcoin, ethereum, and other cryptocurrencies. They said these currencies are not national or legal tender and cannot be used to pay taxes. They do not fall within the guidelines provided by Polish Financial Supervision Authority. Businesses, especially, should be wary about adopting or trying to use “virtual currencies.”

This warning comes as more Polish restaurants and eateries have begun to accept bitcoin as a method of payment. Poland’s largest food delivery service, with 5000+ restaurants, recently started accepting the digital currency. It will be interesting to see how the general public and investors react to recent condemnations of bitcoin and other digital currencies.