[#ChainCode-2constructor-01]
= xref:ChainCode.adoc[ChainCode]::ChainCode
:relfileprefix: ../
:mrdocs:

Constructs a chain code from an existing 256‐bit blob.

== Synopsis

Declared in `<hash.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
explicit
ChainCode(xref:base_blob-09.adoc[base_blob<256>] const& b);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *b*
| The blob to copy the chain code from.
|===


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