Does anyone know why they reject the “polluted” coins or on what legal basis they base their classification on these coins? In the end, the coins that come from the mixtures are not necessarily illegal or from illegal sources?

Does your service include sites that do not accept bitcoin from gambling, porn, drug promotion, etc.? Or are you talking about mixing/“polluted” coins specifically?

In the previous days, we started hearing the term green coins "those that have been mined from environmentally friendly sources" and which many platforms "such as Coinbase" may adopt for reasons related to the stock market.