More Payment Options. Users can create and connect Uphold Login wallets to transfer funds to your business. Become an App Partner Icon. At Uphold, we make it easy to buy and sell any major digital currency. You can invest, transfer or send/receive 70 cryptocurrencies. Connect your wallet and download tax forms instantly with Koinly. Opening an Uphold account is subject to status, conditions, identity checks and to persons over 18 years old.