diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 4bc13aff92..20f5053684 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -1,33 +1,5 @@
-# Lines starting with '#' are comments.
-# Each line is a file pattern followed by one or more owners.
+# These owners will be the default owners for everything in the repo. Unless a
+# later match takes precedence, they will be requested for review when someone
+# opens a pull request.
 
-accounts/usbwallet/             @gballet
-accounts/scwallet/              @gballet
-accounts/abi/                   @gballet @MariusVanDerWijden
-beacon/engine/                  @MariusVanDerWijden @lightclient @fjl
-beacon/light/                   @zsfelfoldi
-beacon/merkle/                  @zsfelfoldi 
-beacon/types/                   @zsfelfoldi @fjl
-beacon/params/                  @zsfelfoldi @fjl
-cmd/evm/                        @MariusVanDerWijden @lightclient
-core/state/                     @rjl493456442
-crypto/                         @gballet @jwasinger @fjl
-core/                           @rjl493456442
-eth/                            @rjl493456442
-eth/catalyst/                   @MariusVanDerWijden @lightclient @fjl @jwasinger
-eth/tracers/                    @s1na
-ethclient/                      @fjl
-ethdb/                          @rjl493456442
-event/                          @fjl
-trie/                           @rjl493456442 @gballet
-triedb/                         @rjl493456442
-core/tracing/                   @s1na
-graphql/                        @s1na
-internal/ethapi/                @fjl @s1na @lightclient
-internal/era/                   @lightclient
-miner/                          @MariusVanDerWijden @fjl @rjl493456442
-node/                           @fjl
-p2p/                            @fjl @zsfelfoldi
-rlp/                            @fjl
-params/                         @fjl @gballet @rjl493456442 @zsfelfoldi
-rpc/                            @fjl
+*      @ImJeremyHe @zacshowa @Sneh1999 @philippecamacho @jjeangal
diff --git a/core/rawdb/espresso_freezer.go b/core/rawdb/espresso_freezer.go
new file mode 100644
index 0000000000..894a3ce742
--- /dev/null
+++ b/core/rawdb/espresso_freezer.go
@@ -0,0 +1,20 @@
+package rawdb
+
+// has returns an indicator whether the specified number data is still accessible
+// in the freezer table.
+func (t *freezerTable) has(number uint64) bool {
+	return t.items.Load() > number && t.itemHidden.Load() <= number
+}
+
+// HasAncient returns an indicator whether the specified ancient data exists
+// in the freezer.
+func (f *Freezer) HasAncient(kind string, number uint64) (bool, error) {
+	if table := f.tables[kind]; table != nil {
+		return table.has(number), nil
+	}
+	return false, nil
+}
+
+func NewFreezerTableConfig(noSnappy bool, prunable bool) freezerTableConfig {
+	return freezerTableConfig{noSnappy: prunable}
+}