Great question! One of the (extremely few) downsides with FROST is that you have to choose which signers will be participating at the start of the signing session.
The signing quorum signs under an agreed set of nonces belonging to the signing participants:
In this case, {nonce from device "Stay", nonce from device "Frosty"}
and you can't change this halfway though the signing session.
You elude an interesting idea though, the app could auto-detect at least the first signer and only make you select the other t-1 signers.
nick
npub1j8…g26k2
2024-03-15 08:56:43
in reply to nevent1q…6mjg
Author Public Key
npub1j8d6h8mzvc8f2fvysrf09nlkmn7m2ylj32zl5na4tm5e8fd5dqysrg26k2Published at
2024-03-15 08:56:43Event JSON
{
"id": "4a602e0ffa25f6b9f3d51cc820daf7cd0e3ece082eddf49d920bc311624e27ed",
"pubkey": "91dbab9f62660e95258480d2f2cff6dcfdb513f28a85fa4fb55ee993a5b46809",
"created_at": 1710493003,
"kind": 1,
"tags": [
[
"e",
"b69e3b5aa67fb6247e0768a3c202aee8d6e2c227408929a534919df28c2452f1",
"wss://nos.lol/",
"root"
],
[
"e",
"20d156f9ac13b8e4742a14ffc0a1c180bf3632b8c0d604755bd9af03b38996e4",
"",
"reply"
],
[
"p",
"91dbab9f62660e95258480d2f2cff6dcfdb513f28a85fa4fb55ee993a5b46809"
],
[
"p",
"4149bd2ca7c08ab6321dc1f54176c78acd295daa2030dca04e8010ad992e714d"
]
],
"content": "Great question! One of the (extremely few) downsides with FROST is that you have to choose which signers will be participating at the start of the signing session.\n\nThe signing quorum signs under an agreed set of nonces belonging to the signing participants:\nIn this case, {nonce from device \"Stay\", nonce from device \"Frosty\"}\nand you can't change this halfway though the signing session.\n\nYou elude an interesting idea though, the app could auto-detect at least the first signer and only make you select the other t-1 signers. ",
"sig": "b4c5e3b708a9828c8d90b079dbc7c01138abea7785743158f6009284f27fee7e4cb6ba69b535e0794de9281e5ab22fd063348950fe91c50839fa5e88a4e53b75"
}