Does Spain allow cryptocurrency?｜, but the government has outlined rules for companies that address advertising, taxation, compliance with AML policies, and the designation of crypto assets. Royal Decree 7/2021 regulates custodian services and crypto-to-fiat currency exchange.Cryptocurrencies are largely unregulated in Spain

Does Spain permit the use of cryptocurrency? It seems that while cryptocurrencies are largely unregulated in Spain, the government has still put forth some specific rules for businesses involving crypto-related activities. For instance, the government has outlined regulations regarding advertising, taxation, compliance with anti-money laundering policies, and the classification of crypto assets. Furthermore, Royal Decree 7/2021 specifically addresses custodian services and crypto-to-fiat currency exchange. So, while there's a degree of freedom in the crypto sphere in Spain, it's not completely unregulated. Could you elaborate on these regulations and their implications for crypto users and businesses in Spain?