Pretty interesting how they use 2 companies to offset the private keys risk. I had to google translate some of the info -
It should work. There is a risk that an engraver might make a mistake if it is not verifiable before shipping.
I'm curious about the " The solution brought by COINPLUS (global patent pending) is to divide the secrets ..." because using a proprietary solution is not as good as using a well-known well-tested solution (e.g. Shamir's Secret Sharing algorithm).