Cash Advance: See Terms How The Card Stacks Up BlockFi Rewards Visa Signature Credit Card* vs. Gemini Credit Card* The Gemini Credit Card offers a couple of advantages to the BlockFi Bitcoin Rewards credit card. First, the Gemini Credit Card converts your rewards to cryptocurrency in real time. This means you can time big purchases to coincide with times when Bitcoin’s trading value is favorable to you. Secondly, you earn rewards in any cryptocurrency on the Gemini platform if you use the Gemini Credit Card. That means you’re not limited to only Bitcoin, you can earn other popular cryptocurrencies, such as Ethereum.