[#CombinePSBTs]
= CombinePSBTs
:mrdocs:

Combines PSBTs with the same underlying transaction, resulting in a single PSBT with all partial signatures from each input.

== Synopsis

Declared in `<psbt.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[nodiscard]]
std::optional<PartiallySignedTransaction>
CombinePSBTs(std::vector<PartiallySignedTransaction> const& psbtxs);
----

== Return Value

The combined PSBT or std::nullopt if the PSBTs cannot be combined

[NOTE]
====
The return value https://en.cppreference.com/cpp/language/attributes/nodiscard[should not be discarded^].
====
== Parameters

[cols="1,4"]
|===
| Name| Description
| *psbtxs* [in]
| the PSBTs to combine
|===


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