I wanted to set up a little 1.0.0 server and just try to beat an early version of the game with some friends but I couldn't find the server.jar file for 1.0.0. The earliest version I found was for 1.2 and it wasn't on the official Minecraft site so I don't trust it. I might just be stupid and servers might have been added in a later version of the game but I'm pretty sure they existed in 1.0. I'm sorry if this is a stupid question but I tried my best to find the file: Am I able to create a 1.0 server and if so where can I find the jar file? Thank you.
No problem. The same technique would work for any historical Minecraft version - just look up the date it was released on the wiki and then get an Archive snapshot from a day or two after of https://minecraft.net/download.