[#GetBlockProof-0f]
= GetBlockProof
:mrdocs:

Compute how much work a block index entry corresponds to.

== Synopsis

Declared in `<chain.h>`

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

== Return Value

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

== Parameters

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


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