[#PSBTInput-height_locktime]
= xref:PSBTInput.adoc[PSBTInput]::height_locktime
:relfileprefix: ../
:mrdocs:

The required height‐based locktime for this input (PSBTv2).

== Synopsis

Declared in `<psbt.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::optional<uint32_t> height_locktime;
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