Issue Details

Number

27583

Title

psbt: set global_xpubs (at least for multisig descriptors)

Description

### Please describe the feature you'd like to see added. The `walletcreatefundedpsbt`, `walletprocesspsbt` and `send`* RPC, as well as the send dialog* in the GUI should populate the `PSBT_GLOBAL_XPUB` field (defined in [BIP 174](https://github.com/bitcoin/bips/blob/master/bip-0174.mediawiki)). At least when used in a multisig context, e.g. when spending from a `multi()` descriptor. The Ledger Bitcoin app enforces this as of version 2.1.1., see https://github.com/bitcoin-core/HWI/issues/671 `*` = when used with an external signer ### Is your feature related to a problem, if so please describe it. Multisig funds (P2WSH and P2SH-P2WSH) are trapped on a Ledger if you update it's Bitcoin app to 2.1.1, unless you use some additional tooling to set this field. ### Describe the solution you'd like _No response_ ### Describe any alternatives you've considered _No response_ ### Please leave any additional context _No response_

URL

https://github.com/bitcoin/bitcoin/issue/27583

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