Fintech startup Upgrade is launching a new credit card today. The Upgrade Bitcoin Rewards Card is a classic Visa credit card that works across the Visa network. But you get 1.5% in bitcoin rewards when you make payments. Upgrade isn’t the first company to announce a credit card with bitcoin rewards — but it’s the first one that is generally available. If your application is approved, you can start using the virtual card immediately. BlockFi announced its own credit card with bitcoin rewards in December 2020. Gemini followed suit quickly…