[#GetBlockProof-02]
= GetBlockProof
:mrdocs:

`GetBlockProof` overloads

== Synopses

Declared in `<chain.h>`

Compute how much work a block header corresponds to.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:arith_uint256.adoc[arith_uint256]
xref:GetBlockProof-03.adoc[GetBlockProof](xref:CBlockHeader.adoc[CBlockHeader] const& header);
----

[.small]#xref:GetBlockProof-03.adoc[_» more..._]#

Compute how much work a block index entry corresponds to.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:arith_uint256.adoc[arith_uint256]
xref:GetBlockProof-0f.adoc[GetBlockProof](xref:CBlockIndex.adoc[CBlockIndex] const& block);
----

[.small]#xref:GetBlockProof-0f.adoc[_» more..._]#

== Return Value

* The expected number of hashes required to satisfy the header's target.
* The expected number of hashes required to satisfy the block's target.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *header*
| The block header.
| *block*
| The block index entry.
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#