Quiz: Money Is Changing Again 4 questions · 80% to pass 1. Approximately what percentage of US payments are currently made with physical cash?5%16%35%50%Cash accounts for roughly 16% of US payments and continues to decline. For people under 30, the figure is closer to 10%.2. What is a CBDC?A cryptocurrency like BitcoinA digital currency issued by a central bankA stablecoin backed by goldA type of bank deposit accountA Central Bank Digital Currency is a digital form of a nation's currency, issued and controlled directly by the central bank rather than by commercial banks.3. What distinguishes a self-custodial wallet from a bank account?It earns higher interestThe user controls the cryptographic keys, not an institutionIt is insured by the FDICIt can only hold cryptocurrencyIn a self-custodial wallet, the user holds the private keys that control the funds. No bank, government, or company can freeze, seize, or access the funds without those keys.4. How many countries are exploring or developing CBDCs as of 2026?About 10About 50Over 130All 195Over 130 countries, representing 98% of global GDP, are in some stage of exploring, developing, or piloting Central Bank Digital Currencies. Check answers Retake quiz Back to lesson Next lesson →