From 95f12de92505522a32ba58acd5251c69e602d160 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter@wuille.net>
Date: Fri, 17 Feb 2023 16:29:49 -0500
Subject: [PATCH] BIP341 txdata cannot be precomputed without spent outputs

---
 src/script/interpreter.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/script/interpreter.cpp b/src/script/interpreter.cpp
index 03b157a847..5f4a1aceb2 100644
--- a/src/script/interpreter.cpp
+++ b/src/script/interpreter.cpp
@@ -1439,7 +1439,7 @@ void PrecomputedTransactionData::Init(const T& txTo, std::vector<CTxOut>&& spent
         hashOutputs = SHA256Uint256(m_outputs_single_hash);
         m_bip143_segwit_ready = true;
     }
-    if (uses_bip341_taproot) {
+    if (uses_bip341_taproot && m_spent_outputs_ready) {
         m_spent_amounts_single_hash = GetSpentAmountsSHA256(m_spent_outputs);
         m_spent_scripts_single_hash = GetSpentScriptsSHA256(m_spent_outputs);
         m_bip341_taproot_ready = true;