Improve user dialog when signing multisig psbts #832
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Prior to this commit, when a psbt requiring multiple signers is signed via gui the dialog is vague/confusing. Whether the signer successfully partially signs the psbt or not the same warning is displayed "Could not sign any more inputs." After signing the tx, the only way for the user to know if their action had any effect is to inspect the psbt (unless it was the last signature that completed the psbt, in which case there is a success dialog). Now we indicate when a psbt has been partially signed, and show how many partial signatures the psbt has in the transaction description.
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hebasto
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It would be interesting to see a PSBT window's output sample when the user signed an input but couldn't sign another input which is also part of the transaction? (Is that possible?) |
It's possible but I considered it outside the scope of this PR - in such cases behavior is not changed by this PR. Because i want to keep this simple (seems trying to handle cases like this and communicate it to the user in a straightforward manner would be complicated). In this PR I just try to improve the UX for "normal" multisigs like wallet_multisig_descriptor_psbt.py and bitcoin/bitcoin#29156 - I don't think it can ever be the case that one input is signed but another is not, and I'd expect this to be true for vast majority of wallets where users are using bitcoin core's gui to sign psbts All that said, interested to see what reviewers with more experience than me think |
Prior to this commit, when a psbt requiring multiple signers is signed via gui the dialogue is vague/confusing. Whether the signer successfully partially signs the psbt or not the same warning is displayed "Could not sign any more inputs." After signing the tx, the only way for the user to know if their action had any effect is to inspect the psbt (unless it was the last signature that completed the psbt, in which case there is a success dialoge).
Now we indicate when a psbt has been partially signed, and show how many partial signatures the psbt has in the transaction description.
Here is what a "daisy chain" signing flow for a 4-of-4 multisig looks like via gui. Same as in bitcoin core's functional test wallet_multisig_descriptor_psbt
First signer:
Second signer:
Third signer:
Fourth and final signer (psbt is complete and can be broadcasted):
Before this commit, the first-third signers would just see this after signing. It is at best confusing because it is the same warning a signer would see if they were not in the multisig and no signature was added to the psbt:
