https://github.com/thomiceli/opengist
Does what you want except the auto-delete I think.
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0x0.st comes to my mind when I think about a pastebin. I don't know if this is what you want
Hastebin
Hastebin is a text store site or Pastebin tool that allows you to easily share plain text, such as code snippets, with others
https://www.toptal.com/developers/hastebin/about
FlashPaper
One-time encrypted password/secret sharing
Flash paper not really what im looking for. And hastbin seems to have a whole bunch of drama related to getting baught out a proprietary veraion and a new foss version thats allegedly shit and talk of forking.
I use privatebin. Has some good features but I dont think it has login
Assuming you are referring to Pastebin.com, here are some alternatives: https://alternativeto.net/software/pastebin/?license=opensource&platform=self-hosted