[#VERSIONBITS_LAST_OLD_BLOCK_VERSION]
= VERSIONBITS&lowbar;LAST&lowbar;OLD&lowbar;BLOCK&lowbar;VERSION
:mrdocs:

What block version to use for new blocks (pre versionbits)

== Synopsis

Declared in `&lt;versionbits&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
inline constexpr int32&lowbar;t VERSIONBITS&lowbar;LAST&lowbar;OLD&lowbar;BLOCK&lowbar;VERSION = 4;
----


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