Do you mean that cashu and fedi are not the final instantiation of what chaumian ecash could be? I was assuming that the trade offs that we're seeing on these two systems aren't something we can get rid of, but maybe I was wrong? I'd like to know more

This is an awesome find. I tried the Cashu extension on LNBits when it was a thing and accidentally double spent like 30,000 sats. It wasn't a big deal. I was the only one using it and I knew I didn't have those sata anymore, but it taught me fractional reserve banking can happen by accident. I still like cashu, mostly for educational purposes. My hypothesis is tools like brrr.gandalf.com can be used as tangible realia to teach people how to use Bitcoin. I think of it as a physical ChangeTip we used to use back in the day. I made a YouTube video about the website yesterday, but I want to make sure I convey the danger of putting Bitcoin on mints. Again, I understand people can get rugged, even if it's unintentional. Do you think it's possible to use these notes for small amounts of Bitcoin(like a few pennies) to teach people the concepts of self custody from a pedogogical perspective?

Hi @Ben Arc just out of curiosity: what exactly are the flaws of ecash?