[#CChainParams-VersionBitsParameters]
= xref:CChainParams.adoc[CChainParams]::VersionBitsParameters
:relfileprefix: ../
:mrdocs:

VersionBitsParameters holds activation parameters

== Synopsis

Declared in `&lt;kernel&sol;chainparams&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct VersionBitsParameters;
----

== Data Members

[cols="1,4"]
|===
| Name| Description
| xref:CChainParams/VersionBitsParameters/min_activation_height.adoc[`min&lowbar;activation&lowbar;height`] 
| Earliest block height at which the deployment may activate&period;
| xref:CChainParams/VersionBitsParameters/start_time.adoc[`start&lowbar;time`] 
| Median&hyphen;time&hyphen;past at which signalling for the deployment may begin&period;
| xref:CChainParams/VersionBitsParameters/timeout.adoc[`timeout`] 
| Median&hyphen;time&hyphen;past after which the deployment can no longer activate&period;
|===



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