There are constant rumors of additional currencies like Ripple getting support from Coinbase as well. Only a legal professional can offer legal advice and Buy Bitcoin Worldwide offers no such advice with respect to the contents of its website. A master public key is created from the seed and imported into a separate Electrum install on your everyday computer. No Lock-In You can export your private keys and use them in other Bitcoin clients. To keep your wallet safe, Blockchain recommends completing the three key security features in your account: email verification, two-factor authentication, and a back-up security phrase. This means it downloaded the entire Bitcoin blockchain. Instead, it is simply a place to store your Bitcoin.