Did Hal Finney Really Join Bitcoin Before It Launched?

I always thought Hal Finney was the second person to use Bitcoin after Satoshi. But then I realized, like, where's the proof? I couldn’t find a solid source besides those private emails Hal published later. I decided to dig deeper into what we have from that time. So, I dug up some interesting stuff: - Emails between Hal and Satoshi - Hal's debug log from his first Bitcoin run - His post on this forum talking about his early days - A bunch of screenshots too. To be honest, it feels like we’re missing some key pieces here... Anyone else ever considered this?