Next came the crucial part: the . Leo pulled up his wallet's "Receive" address on his phone and held it under the machine's red laser scanner. A satisfying beep confirmed the link. He then slid his crisp bill into the feeder. The machine whirred, processed the cash, and displayed the current exchange rate along with a small transaction fee .

Leo stood before the glowing in the corner of the local deli, feeling like a character in a spy thriller. He had a hundred-dollar bill in his pocket and a digital wallet app open on his phone, ready to bridge the gap between paper cash and the blockchain.

He tapped "Get Started" on the touchscreen, and the machine asked for his . After a quick SMS verification , the screen prompted him to choose his action. He selected "Buy Bitcoin."

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