[#BlockValidationResult]
= BlockValidationResult
:mrdocs:

A "reason" why a block was invalid, suitable for determining whether the provider of the block should be banned/ignored/disconnected/etc. These are much more granular than the rejection codes, which may be more useful for some other use‐cases.

== Synopsis

Declared in `<consensus/validation.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
enum class BlockValidationResult : int;
----

== Members

[cols="1,4"]
|===
| Name| Description
| `BLOCK_RESULT_UNSET` 
| initial value. Block has not yet been rejected
| `BLOCK_CONSENSUS` 
| invalid by consensus rules (excluding any below reasons)
| `BLOCK_CACHED_INVALID` 
| this block was cached as being invalid and we didn't store the reason why
| `BLOCK_INVALID_HEADER` 
| invalid proof of work or time too old
| `BLOCK_MUTATED` 
| the block's data didn't match the data committed to by the PoW
| `BLOCK_MISSING_PREV` 
| We don't have the previous block the checked one is built on
| `BLOCK_INVALID_PREV` 
| A block this one builds on is invalid
| `BLOCK_TIME_FUTURE` 
| block timestamp was > 2 hours in the future (or our clock is bad)
| `BLOCK_HEADER_LOW_WORK` 
| the block header may be on a too‐little‐work chain
|===



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