[#ChainType]
= ChainType
:mrdocs:

Identifies which Bitcoin chain a node operates on.

== Synopsis

Declared in `<util/chaintype.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
enum class ChainType : int;
----

== Members

[cols="1,4"]
|===
| Name| Description
| `MAIN` 
| The main Bitcoin network (mainnet).
| `TESTNET` 
| The version 3 public test network (testnet3).
| `SIGNET` 
| A signet network, where blocks require a signature.
| `REGTEST` 
| A private regression test network with on‐demand block creation.
| `TESTNET4` 
| The version 4 public test network (testnet4).
|===


== Non-Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:ChainTypeFromString.adoc[`ChainTypeFromString`]
| Parse a chain type from its canonical string name.
| xref:ChainTypeToString.adoc[`ChainTypeToString`]
| Convert a chain type to its canonical string name.
| xref:CreateBaseChainParams.adoc[`CreateBaseChainParams`]
| Creates and returns a std::unique_ptr<CBaseChainParams> of the chosen chain.
| xref:GetNetworkForMagic.adoc[`GetNetworkForMagic`]
| Determines which chain a set of network magic bytes belongs to.
| xref:SelectBaseParams.adoc[`SelectBaseParams`]
| Sets the params returned by Params() to those for the given chain.
| xref:SelectParams.adoc[`SelectParams`]
| Sets the params returned by Params() to those for the given chain type.
|===


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