So I have done my "experiment" and you are right, I need to store the descriptor.
So I guess that my only option would be a digital key for a multisig, but it basically breaks the whole point of the multisig security and makes it a single point of failure :(
I was just so hoping this could be a simple solution, but its not :(
So what was the solution you came up with for the descriptor?
With seedhammer you can easily store the descriptor in steel. Really great to hear you checked this out! If you need a seedhammer to try and you’re in the Netherlands, let me know.
I'm sorry. In in London. But I would love to see what you mean. The descriptor is like 4 lines long and not really human readable, so the best way to store it should be a digital file. Are you saying we should write it down in steel?
Can you post an photo of what seedhammer looks like?
Oh shit! 
I sometimes take a little time but eventually I get there :) Thanks for showing me this.
But I wonder if I can achieve the same thing by printing a QR code on paper, laminating it and storing it inside a fire and waterproof container?
Its probably cheaper....
