What country is Bytom in?

Excuse me, could you please clarify something for me? I've come across the term "Bytom" in the context of cryptocurrency and blockchain technology, but I'm not entirely sure where it originates from. Is Bytom a specific country, or is it perhaps a project, platform, or something else entirely? If it is indeed a country, could you please tell me which one it is? I'm quite curious to learn more about its connection to the world of cryptocurrency.