Hash of the UTXO set at the target block, computed when the chainstate reaches the target block, and null before then.
Declared in <validation.h>
[[guarded_by(0x7ff37b901698), guarded_by(0x7ff375c482a8), guarded_by(0x7ff37e053118), guarded_by(0x7ff375934078)]]
std::optional<AssumeutxoHash> m_target_utxohash;