It has not always been considered as a legal currency, but its decentralized nature made it difficult for the government and financial regulators to control its use. On the other hand, the five most expensive states to mine Bitcoin in the U. Your coins are stored in the same Robinhood account you use for your stocks and share a login. But if you do live in one of those states, Robinhood Crypto is a great option to get started in Bitcoin or Ethereum trading.