diff --git a/server/v2/cometbft/abci.go b/server/v2/cometbft/abci.go
index 372886792ee7..7519b3d8c732 100644
--- a/server/v2/cometbft/abci.go
+++ b/server/v2/cometbft/abci.go
@@ -74,6 +74,7 @@ func NewConsensus[T transaction.Tx](
 	store types.Store,
 	cfg Config,
 	txCodec transaction.Codec[T],
+	chainId string,
 ) *Consensus[T] {
 	return &Consensus[T]{
 		appName:                appName,
@@ -93,7 +94,7 @@ func NewConsensus[T transaction.Tx](
 		processProposalHandler: nil,
 		verifyVoteExt:          nil,
 		extendVote:             nil,
-		chainID:                "",
+		chainID:                chainId,
 		indexedEvents:          indexedEvents,
 		initialHeight:          0,
 	}
diff --git a/server/v2/cometbft/go.sum b/server/v2/cometbft/go.sum
index 99756515738a..66182dd031fe 100644
--- a/server/v2/cometbft/go.sum
+++ b/server/v2/cometbft/go.sum
@@ -321,6 +321,8 @@ github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/
 github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-sqlite3 v1.14.22 h1:2gZY6PC6kBnID23Tichd1K+Z0oS6nE/XwU+Vz/5o4kU=
+github.com/mattn/go-sqlite3 v1.14.22/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/minio/highwayhash v1.0.2 h1:Aak5U0nElisjDCfPSG79Tgzkn2gl66NxOMspRrKnA/g=
 github.com/minio/highwayhash v1.0.2/go.mod h1:BQskDq+xkJ12lmlUUi7U0M5Swg3EWR+dLTk+kldvVxY=
diff --git a/server/v2/cometbft/server.go b/server/v2/cometbft/server.go
index c85a241566e2..c06c56c9be9e 100644
--- a/server/v2/cometbft/server.go
+++ b/server/v2/cometbft/server.go
@@ -5,6 +5,7 @@ import (
 	"crypto/sha256"
 	"encoding/json"
 	"fmt"
+	"os"
 	"path/filepath"
 
 	abciserver "github.com/cometbft/cometbft/abci/server"
@@ -68,6 +69,21 @@ func (s *CometBFTServer[T]) Init(appI serverv2.AppI[T], v *viper.Viper, logger l
 		AppTomlConfig:    appTomlConfig,
 	}
 
+	chainID := v.GetString(FlagChainID)
+	if chainID == "" {
+		// fallback to genesis chain-id
+		reader, err := os.Open(filepath.Join(v.GetString(serverv2.FlagHome), "config", "genesis.json"))
+		if err != nil {
+			panic(err)
+		}
+		defer reader.Close()
+
+		chainID, err = genutiltypes.ParseChainIDFromGenesis(reader)
+		if err != nil {
+			panic(fmt.Errorf("failed to parse chain-id from genesis file: %w", err))
+		}
+	}
+
 	indexEvents := make(map[string]struct{}, len(s.config.AppTomlConfig.IndexEvents))
 	for _, e := range s.config.AppTomlConfig.IndexEvents {
 		indexEvents[e] = struct{}{}
@@ -86,6 +102,7 @@ func (s *CometBFTServer[T]) Init(appI serverv2.AppI[T], v *viper.Viper, logger l
 		store,
 		s.config,
 		s.initTxCodec,
+		chainID,
 	)
 	consensus.prepareProposalHandler = s.serverOptions.PrepareProposalHandler
 	consensus.processProposalHandler = s.serverOptions.ProcessProposalHandler
diff --git a/server/v2/config.go b/server/v2/config.go
index 57cce302bd74..7ce73fe88a9a 100644
--- a/server/v2/config.go
+++ b/server/v2/config.go
@@ -2,7 +2,6 @@ package serverv2
 
 import (
 	"fmt"
-	"strings"
 
 	"github.com/mitchellh/mapstructure"
 	"github.com/spf13/viper"
@@ -34,8 +33,9 @@ func ReadConfig(configPath string) (*viper.Viper, error) {
 func UnmarshalSubConfig(v *viper.Viper, subName string, target any) error {
 	var sub any
 	for k, val := range v.AllSettings() {
-		if strings.HasPrefix(k, subName) {
+		if k == subName {
 			sub = val
+			break
 		}
 	}
 
diff --git a/server/v2/config_test.go b/server/v2/config_test.go
index 24eb28bb7522..a24cd4cf3d2e 100644
--- a/server/v2/config_test.go
+++ b/server/v2/config_test.go
@@ -9,6 +9,7 @@ import (
 
 	serverv2 "cosmossdk.io/server/v2"
 	grpc "cosmossdk.io/server/v2/api/grpc"
+	store "cosmossdk.io/server/v2/store"
 )
 
 func TestReadConfig(t *testing.T) {
@@ -20,6 +21,7 @@ func TestReadConfig(t *testing.T) {
 	require.NoError(t, err)
 
 	require.Equal(t, v.GetString("grpc.address"), grpc.DefaultConfig().Address)
+	require.Equal(t, v.GetString("store.app-db-backend"), store.DefaultConfig().AppDBBackend)
 }
 
 func TestUnmarshalSubConfig(t *testing.T) {
@@ -36,4 +38,9 @@ func TestUnmarshalSubConfig(t *testing.T) {
 
 	require.True(t, grpc.DefaultConfig().Enable)
 	require.False(t, grpcConfig.Enable)
+
+	storeConfig := store.Config{}
+	err = serverv2.UnmarshalSubConfig(v, "store", &storeConfig)
+	require.NoError(t, err)
+	require.Equal(t, *store.DefaultConfig(), storeConfig)
 }
diff --git a/server/v2/store/server.go b/server/v2/store/server.go
index c7a1f9035d10..78c4cd759cd9 100644
--- a/server/v2/store/server.go
+++ b/server/v2/store/server.go
@@ -25,7 +25,7 @@ func New[T transaction.Tx]() *StoreComponent[T] {
 func (s *StoreComponent[T]) Init(appI serverv2.AppI[T], v *viper.Viper, logger log.Logger) error {
 	cfg := DefaultConfig()
 	if v != nil {
-		if err := v.Sub(s.Name()).Unmarshal(&cfg); err != nil {
+		if err := serverv2.UnmarshalSubConfig(v, s.Name(), &cfg); err != nil {
 			return fmt.Errorf("failed to unmarshal config: %w", err)
 		}
 	}
diff --git a/server/v2/testdata/app.toml b/server/v2/testdata/app.toml
index 20482ac44282..ec7d77995d41 100644
--- a/server/v2/testdata/app.toml
+++ b/server/v2/testdata/app.toml
@@ -10,6 +10,36 @@ max-recv-msg-size = 10485760
 # The default value is math.MaxInt32.
 max-send-msg-size = 2147483647
 
+[store]
+# The type of database for application and snapshots databases.
+app-db-backend = 'goleveldb'
+
+[store.options]
+# State storage database type. Currently we support: 0 for SQLite, 1 for Pebble
+ss-type = 0
+# State commitment database type. Currently we support:0 for iavl, 1 for iavl v2
+sc-type = 0
+
+# Pruning options for state storage
+[store.options.ss-pruning-option]
+# Number of recent heights to keep on disk.
+keep-recent = 2
+# Height interval at which pruned heights are removed from disk.
+interval = 1
+
+# Pruning options for state commitment
+[store.options.sc-pruning-option]
+# Number of recent heights to keep on disk.
+keep-recent = 2
+# Height interval at which pruned heights are removed from disk.
+interval = 1
+
+[store.options.iavl-config]
+# CacheSize set the size of the iavl tree cache.
+cache-size = 100000
+# If true, the tree will work like no fast storage and always not upgrade fast storage.
+skip-fast-storage-upgrade = true
+
 [mock-server-1]
 # Mock field
 mock_field = 'default'