[#WitnessV0KeyHash]
= WitnessV0KeyHash
:mrdocs:

A version‐0 witness key‐hash destination for a P2WPKH address.

== Synopsis

Declared in `<addresstype.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct WitnessV0KeyHash
    : xref:BaseHash-03.adoc[BaseHash<uint160>]
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:BaseHash-03.adoc[BaseHash<uint160>]`
| Wraps a fixed‐size hash value and exposes byte‐range access to it.
|===

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:WitnessV0KeyHash/2constructor-07.adoc[`WitnessV0KeyHash`]         [.small]#[constructor]#
| Constructors
| xref:WitnessV0KeyHash/ToString.adoc[`ToString`] 
| Returns the hexadecimal string representation of the hash.
| xref:WitnessV0KeyHash/begin-0c.adoc[`begin`] 
| `begin` overloads
| xref:WitnessV0KeyHash/data-09.adoc[`data`] 
| `data` overloads
| xref:WitnessV0KeyHash/end-01.adoc[`end`] 
| `end` overloads
| xref:WitnessV0KeyHash/size.adoc[`size`] 
| Returns the number of bytes in the hash.
| xref:WitnessV0KeyHash/2conversion.adoc[`operator std::vector<unsigned char>`] 
| Converts the hash to a byte vector.
| xref:WitnessV0KeyHash/operator_eq.adoc[`operator==`] 
| Compares two hashes for equality.
| xref:WitnessV0KeyHash/operator_lt.adoc[`operator<`] 
| Orders two hashes.
|===


== Protected Data Members

[cols="1,4"]
|===
| Name| Description
| xref:WitnessV0KeyHash/m_hash.adoc[`m_hash`] 
| The wrapped hash value.
|===


== Non-Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:ToKeyID-00.adoc[`ToKeyID`]
| Convert a witness key‐hash destination back to a key identifier.
|===


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