crypto currency mining   In a small, sleepy town, there was an old house with a garden that had been locked up for decades. The garden was surrounded by a tall, ivy-covered wall, and no one had seen inside for as long as anyone could remember. One day, a curious boy named Sam moved into the house with his family. As he explored the property, he noticed a rusty, old key lying under a bush. Sam picked it up, wondering what it might unlock. After searching the house and finding nothing, Sam...