The future of online payments is leaning a few degrees closer to cryptocurrencies. That doesn’t mean Bitcoin (CRYPTO: BTC) will gain more traction and prices will rise; but some form of digital fiat, like U.S. dollar tether (USDT) or another stable coin, will become a core part of online payment platforms. Companies are building out the technology to make that happen. The Coinbase (NASDAQ: COIN)-Stripe deal shows this market is now wide open for…