[#SignTransaction-01]
= SignTransaction
:mrdocs:

Sign the CMutableTransaction

== Synopsis

Declared in `<script/sign.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
SignTransaction(
    xref:CMutableTransaction.adoc[CMutableTransaction]& mtx,
    xref:SigningProvider.adoc[SigningProvider] const* provider,
    std::map<COutPoint, Coin> const& coins,
    xref:SignOptions.adoc[SignOptions] const& options,
    std::map<int, bilingual_str>& input_errors);
----

== Return Value

True if every input was signed successfully.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *mtx*
| The transaction to sign in place.
| *provider*
| The source of keys and scripts used to sign.
| *coins*
| The outputs spent by the transaction, keyed by outpoint.
| *options*
| Options controlling how each input is signed.
| *input_errors*
| Filled with per‐input signing errors, keyed by index.
|===


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