Where is the file stored, I looked at the security-design page and it says hat it's uploaded to Backblaze and there's some reference to torrent creation, I'm not sure I get it

And I thank you for it! I’ve been pushing it to anyone who has a need and I use it myself to safely exchange files across machines that are behind vpns and firewalls at work.

It’s pretty fast too!

My only comment is that I wished there was a way to choose to keep the files a couple more days (had the issue with sending files to my nephew who couldn’t get them straight away and then the link expired once he was able to use it, after class, the next day).

But 24h is probably the sweet spot.

Does this use the Magic Wormhole protocol?