I'd probably use nostr:nprofile1qqs09jtvjlmyrxjn37zv70a89csegcz7rpyqjmnw29cveedhv7vagqqpz4mhxue69uhk2er9dchxummnw3ezumrpdejqz9rhwden5te0wfjkccte9ejxzmt4wvhxjmcpzpmhxue69uhkummnw3ezuamfdejs92xe5k to set up a multisig. Every seed holder would need to secure their own private key on steel individually. 

Each holder could have their own Seedsigner but they should at least all have their own SD card with verified firmware. And that should be physically protected, also individually. .  

 The rulers don’t seem to be the kind of people who take all those security nuisances. Maybe they only have it protected in Coinbase