[#blockheaderToJSON]
= blockheaderToJSON
:mrdocs:

Block header to JSON

== Synopsis

Declared in `<rpc/blockchain.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[locks_excluded(0x7f2e2991a498)]]
xref:UniValue.adoc[UniValue]
blockheaderToJSON(
    xref:CBlockIndex.adoc[CBlockIndex] const& tip,
    xref:CBlockIndex.adoc[CBlockIndex] const& blockindex,
    xref:uint256.adoc[uint256] pow_limit);
----

== Return Value

A JSON representation of the block header.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *tip*
| The current chain tip, used to compute confirmations.
| *blockindex*
| The block index entry of the header.
| *pow_limit*
| The proof‐of‐work limit used to compute difficulty.
|===


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