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47 sats \ 4 replies \ @Scoresby 30 Jun \ on: Frostsnap Frontier Demo - Preorders Open Now ❄ bitcoin
Love the idea of a multisig that has an singlesig onchain footprint!
I'm curious how the backups work: if I have a seed phrase backup for each device, am I able to restore the wallet in different wallet software (eq Bitcoin Core)?
And for the descriptor: when I back up one of my devices, do I also have a way to back up the descriptor?
am I able to restore the wallet in different wallet software (eq Bitcoin Core)?
You will not be able to restore FROST secret shares into a non-frost wallet, at least until they add functionality. BUT you will be able to recombine a threshold number of key backups into an xpriv, without our app, which can be imported into sparrow/bitcoin core etc.
do I also have a way to back up the descriptor?
An awesome thing with FROST is that because there's just one group public key, which can be reconstructed from two keys (or their public images), you can rebuild the descriptor from two backups or their devices. No need to additionally back the descriptor!
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No, most multisig wallets these days use p2wsh, so your receive address looks like every other address, but when you spend you reveal the whole script: it's a multisig with this many keys and this kind of quorum.
Taproot addresses let you hide some of this info: you can make it look like the keys you use to spend are the only keys in the multisig.
But my understanding of FROST is that the spending signature looks like a single key signing (even if it's a 2 of 3 or whatever).