working, but needs internet

minigeth/core/state/database.go

@@ -43,7 +43,7 @@ func (db *Database) ContractCodeSize(addrHash common.Hash, codeHash common.Hash)
 
 // OpenStorageTrie opens the storage trie of an account.
 func (db *Database) OpenStorageTrie(addrHash, root common.Hash) (Trie, error) {
-	return SimpleTrie{}, nil
+	return SimpleTrie{db.BlockNumber, db.StateRoot}, nil
 }
 
 type LeafCallback func(paths [][]byte, hexpath []byte, leaf []byte, parent common.Hash) error

minigeth/core/state/statedb.go

@@ -87,6 +87,7 @@ func NewStateDB(header types.Header) *StateDB {
 		stateRoot:           header.Root,
 		db:                  Database{BlockNumber: header.Number, StateRoot: header.Root},
 		trie:                SimpleTrie{BlockNumber: header.Number, StateRoot: header.Root},
+		journal:             newJournal(),
 		accessList:          newAccessList(),
 		logs:                make(map[common.Hash][]*types.Log),
 	}