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

Per‐deployment BIP9 version‐bits activation parameters.

== Synopsis

Declared in `<kernel/chainparams.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::unordered_map<Consensus::DeploymentPos, VersionBitsParameters> version_bits_parameters = {};
----


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