[#CChain-IsTipRecent]
= xref:CChain.adoc[CChain]::IsTipRecent
:relfileprefix: ../
:mrdocs:

Check whether this chain's tip exists, has enough work, and is recent.

== Synopsis

Declared in `<chain.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[requires_capability(0x7f9500d11988), requires_capability(0x7f951194ac38), requires_capability(0x7f951ec8ee38), requires_capability(0x7f950893a4e8), requires_capability(0x7f9503ce5808), requires_capability(0x7f9515d642f8), requires_capability(0x7f950c08bbe8), requires_capability(0x7f9524d89a68), requires_capability(0x7f9516d98838), requires_capability(0x7f95149503b8), requires_capability(0x7f94f0131dc8)]]
bool
IsTipRecent(
    xref:arith_uint256.adoc[arith_uint256] const& min_chain_work,
    std::chrono::seconds max_tip_age) const;
----

== Return Value

True if the tip exists, meets the work threshold, and is recent enough.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *min_chain_work*
| The minimum cumulative chain work the tip must have.
| *max_tip_age*
| The maximum age the tip is allowed to have.
|===


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