The concept of money flowing in and out of borders freely has taken a long time to come up as a problem. Current systems, robust in many aspects, are inefficient—lack of speed in processing, expensive intermediaries, and disconnection from access for those outside formal banking networks. Cryptocurrencies, more recently in recent years, promised a better system. Price volatility, however, rendered them inappropriate as a vehicle of exchange. From this tension, stablecoins were the compromise that united the technical potential of blockchain and fiat stability. It is in this odd in-between that stablecoins are becoming the basis on which crypto-based cross-border payments are being made. To see why, one must consider not merely how they work but the financial, technological, and social forces driving their use.