How to generate a new Bitcoin Address varies between wallets. Please do not do this! These private keys act as the proof of ownership for our Bitcoins. It is solely for Ethereum based coins. Rather, when you first setup the DigitalBitbox all this information is automatically stored on the SD card. Ethereum addresses start with a 0 and usually look something like this :. However, this process is not entirely safe, as you are giving your private key file to a website.