Even though the banking industry and US regulators are getting on board the bitcoin train, actually spending your hard-mined bitcoins can be a bit tricky. Luckily, Coinbase debuted a solution on Friday: the Shift debit card. It's the first such bitcoin-based debit card issued in the US and is backed by VISA. With it, bitcoin users will be able to shop at both on- and offline stores -- basically anywhere that VISA is accepted. The card is linked to your Signing up for the card simply requires filling out this form and paying the $10 issuance fee (in bitcoin of course).