[#VersionBitsCache-CheckUnknownActivations]
= xref:VersionBitsCache.adoc[VersionBitsCache]::CheckUnknownActivations
:relfileprefix: ../
:mrdocs:

Check for unknown activations Returns a vector containing the bit number used for signalling and a bool indicating the deployment is likely to be ACTIVE, rather than merely LOCKED_IN.

== Synopsis

Declared in `<versionbits.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[requires_capability(0x7fb95ce983f8), requires_capability(0x7fb95e080c78), requires_capability(0x7fb9857792e8), requires_capability(0x7fb97abdc878), requires_capability(0x7fb96b806b68), requires_capability(0x7fb95b58a1a8), requires_capability(0x7fb956398fd8)]]
std::vector<std::pair<int, bool>>
CheckUnknownActivations(
    xref:CBlockIndex.adoc[CBlockIndex] const* pindex,
    xref:CChainParams.adoc[CChainParams] const& chainparams);
----

== Return Value

A vector of (bit number, likely‐active) pairs for unknown deployments.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *pindex*
| The block at which to check for unknown activations.
| *chainparams*
| The chain parameters for the active network.
|===


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