It is not sponsored by any government. But if you do live in one of those states, Robinhood Crypto is a great option to get started in Bitcoin or Ethereum trading. Or at least that was the promise when it was created in But if you do want to send your coins to another wallet, Square does offer that feature. Best for Quick and Easy Transactions: Coinmama. Gox, once the largest exchange, shut down in after losing hundreds of millions of dollars worth of bitcoin after a hack. SmartAsset Paid Partner.