[#btck-BlockHeader-2constructor-05]
= xref:btck.adoc[btck]::xref:btck/BlockHeader.adoc[BlockHeader]::BlockHeader
:relfileprefix: ../../
:mrdocs:

Constructs a header by deserializing its 80‐byte form.

== Synopsis

Declared in `<kernel/bitcoinkernel_wrapper.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
BlockHeader(std::span<std::byte const> raw_header);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *raw_header*
| The serialized header bytes.
|===


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