fix: psbt bare utxo signing

[fbwoolf]

Try out this version of Leather — download extension builds.

Solution to handle bare UTXO signing.

The app has to initialize the tx with disableScriptCheck: true, and the changes here would handle getting the address from script type 'ms' w/out errors.

Todo:

• Put up issue in btc-signer lib to handle all types there.

EDIT: Issue opened here: paulmillr/scure-btc-signer#55

[fbwoolf]

@kyranjamie what do you think about this response?
paulmillr/scure-btc-signer#55

[kyranjamie]

Where does ms come from in the first place @fbwoolf ?

[fbwoolf]

Where does ms come from in the first place @fbwoolf ?

ms is the outscript type supplied by the app trying to do multisig. Apparently, though, they are doing it wrong, see this comment on issue: #3897 (comment)

EDIT: It appears I need to refactor this and NOT handle ms this way. The lib has chosen not to handle it for a reason. Link to comment on issue with example script: #3897 (comment) It does seem like this PR fixes the issue for those using bitcoinjs, so I think we should merge it?