[#node-KernelNotifications-headerTip]
= xref:node.adoc[node]::xref:node/KernelNotifications.adoc[KernelNotifications]::headerTip
:relfileprefix: ../../
:mrdocs:

Handle the best header advancing during headers synchronization.

== Synopsis

Declared in `<node/kernel_notifications.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
virtual
void
headerTip(
    xref:SynchronizationState.adoc[SynchronizationState] state,
    int64_t height,
    int64_t timestamp,
    bool presync) override;
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *state*
| The current synchronization state.
| *height*
| Height of the new best header.
| *timestamp*
| Block time of the new best header.
| *presync*
| Whether this update comes from the pre‐synchronization phase.
|===


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