The marketplace didn't take high-fives; it needed real value. Leo linked his (or his debit card) to the exchange. This was the fuel for his journey—the "old world" money that he would soon transform. 3. The Shield: Multi-Factor Authentication (MFA)
His "address" so people knew where to send the gold. what do you need to buy bitcoin
His "secret phrase" (12 or 24 words) that he wrote down on paper and hid in a physical safe. The marketplace didn't take high-fives; it needed real value