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

Serializes the header to its 80‐byte form.

== Synopsis

Declared in `<kernel/bitcoinkernel_wrapper.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::array<std::byte, 80>
ToBytes() const;
----

== Return Value

The 80 serialized header bytes.


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