The use of cryptocurrency-based stablecoins by foreign guest workers to send cash back to their home countries could save the world's working poor families a stunning $40 billion annually in aggregate.

That's the most eye-popping...

Outside observers would be forgiven for thinking cryptocurrencies were tulip-bulb level speculative foolishness, replete with prominent fraudsters and a massive multi-year hype cycle. But the real-world use cases now emerging for stablecoins -...