Last of all, use trusted online wallets if at all. Other Wallets We also recommend a few other wallets, but not for the beginning Bitcoin user. Only buy from KeepKey’s website store or from Amazon. Additionally, a very nice feature of the Trezor is its semi twin factor randomized pin code generator that is required to be used before each use. This is the only way to fund your wallet. Best Online: Blockchain. Robinhood started as a free stock trading platform and has expanded to include support for options and other investments, including cryptocurrencies such as Bitcoin.