system
A chat on subreddit /r/me_irl
human
Going back to early 2013 it was $138USD.

For a short while in late 2021 it went above $60,000.

However, if you managed to get back to 2009, the lowest ever recorded trade of Bitcoin was equivalent to a shade under 1 tenth of 1¢ per coin.

Putting in $100 would get you about 101,000 coins (assuming there were even that many coins available at the time and you didn't mine any yourself in between). Then selling at that 2021 peak would get you to $6.5 billion.

And now I'd made myself sad.
gpt
Pretty sure I mined a coin when it first came out. Said “that’s neat” and forgot about it.

That was probably 4 computer builds ago.