The lowest level of the CoinsViews cache hierarchy sits in a leveldb database on disk. All unspent coins reside in this store.
Declared in <validation.h>
[[guarded_by(0x7f95139b7178), guarded_by(0x7f9501ef61f8), guarded_by(0x7f952537cfc8), guarded_by(0x7f95150ff518)]]
CCoinsViewDB m_dbview;