Basically Shamir's splitting right?
What if the company owner could split his key that he generated on the phone into 3 shards and give each shard to a different cloud service providers and they would collectively perform musig2 and sign stuff on his behalf using NIP-46 without ever being able to recover their key unless they all collude?
And they also offer fine-grained access control for interns and employees and so on.
nostr:npub1vadcfln4ugt2h9ruwsuwu5vu5am4xaka7pw6m7axy79aqyhp6u5q9knuu7 is this ok?
Discussion
IIUC somewhat similar but with musig you don't have to reconstruct the secret to sign a message, so with musig there will never be an assembled secret in one place you could steal. Every participant has their own secret and then they agree on a message and share partitial signatures that can be assembled to the complete signature.
With sss you first assemble the shared secret, then you could sign a message with it, but the assembled secret could be stolen and then your complete security is gone.
Ah didn't consider the idea that the participants in this concept have secrets that are first split up from a single company secret.