Comicsinfo.xml

If you have ComicRack you can use this guide to use CR + it's extension that will scrape metadata from ComicVine and add it to your files:
https://vaemendis.github.io/ubooquity-doc/pages/tutorials/add-metadata-with-comicrack.html

My workflow looks something like this:

• Download comics
• Rename and move to appropriate directories on disk (i.e. my ubooquity comics library)
• use CR to look for new files in the specified library
• convert any .cbr to .cbz (i think since CBR is a .rar format there are issues with being able to write data to that format since it's not open source)
• use the ComicVineScraper extension in CR to scrape and add metadata to any unscraped files
• read and enjoy via opds feed on my android tablet from ubooquity to kuboo app

Doing the same

Do I really need them INSIDE of the files?
I have all my XML-information as an external XML-file with the same name as the Comic-file.

you need it inside. But if you have the xml files -with the correct format-, yan can simply drag and drop them inside the cbz (cbz is simply a zip file). If the xml format is correct (comic.xml is sort of a standard now) , ubooquity will read them

thats a no-go then. I won't modify my files. Then they'll get another checksum.

Why do you need the checksum ? What if you regenrate it ?

Because sharing it in DC++ means I need to have the same checksum as everyone else.