diff --git a/src/txdb.h b/src/txdb.h
--- a/src/txdb.h
+++ b/src/txdb.h
@@ -128,6 +128,19 @@
         std::function<CBlockIndex *(const uint256 &)> insertBlockIndex);
 };
 
+class BaseIndexDB : public CDBWrapper {
+public:
+    BaseIndexDB(const fs::path &path, size_t n_cache_size,
+                bool f_memory = false, bool f_wipe = false,
+                bool f_obfuscate = false);
+
+    /// Read block locator of the chain that the index is in sync with.
+    bool ReadBestBlock(CBlockLocator &locator) const;
+
+    /// Write block locator of the chain that the index is in sync with.
+    bool WriteBestBlock(const CBlockLocator &locator);
+};
+
 /**
  * Access to the txindex database (indexes/txindex/)
  *
@@ -137,7 +150,7 @@
  * and block index entries may not be flushed to disk until after this database
  * is updated.
  */
-class TxIndexDB : public CDBWrapper {
+class TxIndexDB : public BaseIndexDB {
 public:
     explicit TxIndexDB(size_t n_cache_size, bool f_memory = false,
                        bool f_wipe = false);
@@ -149,12 +162,6 @@
     /// Write a batch of transaction positions to the DB.
     bool WriteTxs(const std::vector<std::pair<uint256, CDiskTxPos>> &v_pos);
 
-    /// Read block locator of the chain that the txindex is in sync with.
-    bool ReadBestBlock(CBlockLocator &locator) const;
-
-    /// Write block locator of the chain that the txindex is in sync with.
-    bool WriteBestBlock(const CBlockLocator &locator);
-
     /// Migrate txindex data from the block tree DB, where it may be for older
     /// nodes that have not been upgraded yet to the new database.
     bool MigrateData(CBlockTreeDB &block_tree_db,
diff --git a/src/txdb.cpp b/src/txdb.cpp
--- a/src/txdb.cpp
+++ b/src/txdb.cpp
@@ -444,9 +444,13 @@
     return !ShutdownRequested();
 }
 
+BaseIndexDB::BaseIndexDB(const fs::path &path, size_t n_cache_size,
+                         bool f_memory, bool f_wipe, bool f_obfuscate)
+    : CDBWrapper(path, n_cache_size, f_memory, f_wipe, f_obfuscate) {}
+
 TxIndexDB::TxIndexDB(size_t n_cache_size, bool f_memory, bool f_wipe)
-    : CDBWrapper(GetDataDir() / "indexes" / "txindex", n_cache_size, f_memory,
-                 f_wipe) {}
+    : BaseIndexDB(GetDataDir() / "indexes" / "txindex", n_cache_size, f_memory,
+                  f_wipe) {}
 
 bool TxIndexDB::ReadTxPos(const uint256 &txid, CDiskTxPos &pos) const {
     return Read(std::make_pair(DB_TXINDEX, txid), pos);
@@ -461,7 +465,7 @@
     return WriteBatch(batch);
 }
 
-bool TxIndexDB::ReadBestBlock(CBlockLocator &locator) const {
+bool BaseIndexDB::ReadBestBlock(CBlockLocator &locator) const {
     bool success = Read(DB_BEST_BLOCK, locator);
     if (!success) {
         locator.SetNull();
@@ -469,7 +473,7 @@
     return success;
 }
 
-bool TxIndexDB::WriteBestBlock(const CBlockLocator &locator) {
+bool BaseIndexDB::WriteBestBlock(const CBlockLocator &locator) {
     return Write(DB_BEST_BLOCK, locator);
 }