Thanks for that.  I just visited their [recovery tool](https://github.com/muun/recovery) and it clearly states no collaboaration from Muun is required.

So why are you an anti-muun proponent?  

guyfawkes

But if the second key is on Muun servers, and Muun servers disappear, do you have full custody of your bitcoin?

 on muun servers. It's in the PDF that you're supposed to download and back up.

bitcoin

Is Muun self custody?

> But if the second key is on Muun servers, and Muun servers disappear, do you have full custody of your bitcoin?

It's not *solely* on muun servers. It's in the PDF that you're supposed to download and back up. 