In the past, when countries have, like Afghanistan, tumbled into chaos and conflict, wealthier people have either relied on paper money (such as dollar bills) or precious metals (such as gold) to store their wealth. Sometimes they turned to chains of Islamic brokers (this is known as hawala) to send money across borders. Now crypto is creeping in, and while this may still be at a nascent stage, the development should make us ponder the slippery topic of trust and “credit” in finance.