Sign Up - Bitcoin

He didn't have a physical coin. He didn't have a certificate. He had a long string of alphanumeric characters known as a "public key" and the terrifying responsibility of his "private key." The Lesson

With his client’s payment of 2 BTC sitting in his new wallet—worth about $200 at the time—Elias decided to buy $50 more on his own. He hit "Buy." The Lag: The screen spun for a few seconds. The Result: A green checkmark appeared. bitcoin sign up

The year was 2013, and Elias sat in a dimly lit apartment, the blue light of his monitor reflecting off his glasses. He wasn’t a financier or a tech mogul; he was a freelance graphic designer who had just been offered payment in something called "Bitcoin" for a logo project. He didn't have a physical coin