[#GetNetworkForMagic]
= GetNetworkForMagic
:mrdocs:

Determines which chain a set of network magic bytes belongs to.

== Synopsis

Declared in `<kernel/chainparams.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::optional<ChainType>
GetNetworkForMagic(xref:MessageStartChars.adoc[MessageStartChars] const& pchMessageStart);
----

== Return Value

The matching chain type, or an empty optional if unrecognized.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *pchMessageStart*
| The message‐start bytes to identify.
|===


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