[#btck_transaction_check]
= btck_transaction_check
:mrdocs:

Run context‐free consensus validation on a btck_Transaction.

== Synopsis

Declared in `<kernel/bitcoinkernel.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[__nonnull__]]
int
btck_transaction_check(
    xref:btck_Transaction-08.adoc[btck_Transaction] const* tx,
    xref:btck_TxValidationState-06.adoc[btck_TxValidationState]* validation_state);
----

== Description

Performs basic structural consensus checks (consensus/tx_check::CheckTransaction) without requiring blockchain state.

[NOTE]
====
Only btck_TxValidationResult_UNSET and btck_TxValidationResult_CONSENSUS are reachable via this function.

====

== Return Value

1 if valid, 0 if invalid.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *tx* [in]
| Non‐null, the transaction to validate.
| *validation_state* [out]
| Non‐null, previously created with btck_tx_validation_state_create. Overwritten in‐place with the validation result.
|===


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