[#btck_precomputed_transaction_data_create]
= btck_precomputed_transaction_data_create
:mrdocs:

Create precomputed transaction data for script verification.

== Synopsis

Declared in `<kernel/bitcoinkernel.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[nodiscard, __nonnull__]]
xref:btck_PrecomputedTransactionData-00.adoc[btck_PrecomputedTransactionData]*
btck_precomputed_transaction_data_create(
    xref:btck_Transaction-08.adoc[btck_Transaction] const* tx_to,
    xref:btck_TransactionOutput-0d.adoc[btck_TransactionOutput] const** spent_outputs,
    size_t spent_outputs_len);
----

== Return Value

The precomputed data, or null on error.

[NOTE]
====
The return value https://en.cppreference.com/cpp/language/attributes/nodiscard[should not be discarded^].
====
== Parameters

[cols="1,4"]
|===
| Name| Description
| *tx_to* [in]
| Non‐null.
| *spent_outputs* [in]
| Nullable for non‐taproot verification. Points to an array of outputs spent by the transaction.
| *spent_outputs_len* [in]
| Length of the spent_outputs array.
|===


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