Typical OS was first released in February 2017, and was my first "functional" Scratch OS project. But it is not the first one overall - if you remember Sabir OS Sneak Peek or Sabir OS Final Edition then you are a true legend, thanks for sticking around so long. The project was modified by April 2017 to (partially) remove Beta 2 strings, and then again when reuploaded in 2020 to add the warning on boot. The "passlock" is technically 3019. This being said, there is no detection code, so entering anything else including not filling it in at all will also work. You can also just click the "red minimise button" (red button with a line on the top right) to skip the boot process entirely.
This project was made by hand. There was originally a highly compressed, low quality Windows 7 startup sound on user login. Fun fact: there were plans for a second version of Typical OS in 2019 before the release of the ZenOS project. There was also a stage where what is now PolluxOS would have been "Typical OS 2023" owing to a lack of name ideas.