Before Hal Finney received the first Bitcoin transaction, he was at Mattel trying to make a speech chip talk.
It barely worked. So they took his glitchy little experiment and used it for exactly one thing. The umpire shouting "Yer out!" in Major League Baseball on the Intellivision.
Here's how Hal told it. "I got a book on speech synthesis and tried to make the chip talk, but it didn't work well. We ended up using it as the 'Yer out!' sound."
His colleague David Rolfe remembered it too: "Hal was struggling to get the chip to say anything clear, until that one strange sound turned out to be perfect for an umpire's call.
No credit, of course. Nobody at Mattel got their name on anything back then. So decades before he helped build Bitcoin, Hal Finney was a baseball umpire's voice, and almost nobody knew it was him.