Best Bitcoin Wallet. Most Bitcoin exchanges will let you specify the amount of fiat currency you want to spend and in exchange sell you the equivalent amount of Bitcoin. Although many people want to do this, it’s not possible to buy bitcoin at Walmart with a credit card, debit card or any other form of payment. Coinmama, on the other hand, supports Bitcoin, litecoin, ether and cardano. We may receive compensation when you use CEX. Please visit Coinmama for its exact pricing terms. Further, no banks or institution offers solutions to storing the Bitcoin keys that are a must-have when accessing the Bitcoin address that contains specifics such as BTC balance, transaction encryptions, and other on-platform activities.