[#btck-BlockHeaderApi-03]
= xref:btck.adoc[btck]::BlockHeaderApi
:relfileprefix: ../
:mrdocs:

CRTP mixin adding block‐header accessors shared by the view and owning types.

== Synopsis

Declared in `<kernel/bitcoinkernel_wrapper.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<typename Derived>
class BlockHeaderApi;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:btck/BlockHeaderApi-03/Bits.adoc[`Bits`] 
| Returns the compact difficulty target.
| xref:btck/BlockHeaderApi-03/Hash.adoc[`Hash`] 
| Returns the hash of this header's block.
| xref:btck/BlockHeaderApi-03/Nonce.adoc[`Nonce`] 
| Returns the proof‐of‐work nonce.
| xref:btck/BlockHeaderApi-03/PrevHash.adoc[`PrevHash`] 
| Returns the hash of the previous block.
| xref:btck/BlockHeaderApi-03/Timestamp.adoc[`Timestamp`] 
| Returns the header timestamp.
| xref:btck/BlockHeaderApi-03/ToBytes.adoc[`ToBytes`] 
| Serializes the header to its 80‐byte form.
| xref:btck/BlockHeaderApi-03/Version.adoc[`Version`] 
| Returns the block version.
|===


== Friends

[cols="1,4"]
|===
| Name| Description
| `Derived`
| 
|===

== Derived Classes

[cols="1,4"]
|===
| Name| Description
| xref:btck/BlockHeader.adoc[`BlockHeader`] 
| Owning wrapper over a `btck_BlockHeader`.
| xref:btck/BlockHeaderView.adoc[`BlockHeaderView`] 
| Non‐owning view over a `btck_BlockHeader`.
|===


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