One of the most stable and transparent stablecoins is USDCoin (USDC), a token pegged to the US dollar and operating in various blockchain networks, including ERC20. It is actively used as a tool for storing value, settlements, as well as for fast and flexible transactions around the world. A practical task is to exchange USDCoin ERC20 (USDC) for cash in Czech crowns (CZK). Such an operation can be relevant for travelers, freelancers, entrepreneurs who need Czech crowns in physical form, obtained from a virtual asset.