Image via CoinedBits. Some users protect their private keys by encrypting a wallet with a strong password and, in some cases, by choosing the cold storage option; that is, storing the wallet offline. The leader in blockchain news, CoinDesk is a media outlet that strives for the highest journalistic standards and abides by a strict set of editorial policies. Since February , Robinhood supports Bitcoin and Ethereum trades and market data for another 15 currencies. A bag of costs 0. Image via Lealana.