diff --git a/codec/depinject.go b/codec/depinject.go
index 2ec3f8b2e9..25ce1adb3e 100644
--- a/codec/depinject.go
+++ b/codec/depinject.go
@@ -9,6 +9,7 @@ import (
 	stakingmodulev1 "cosmossdk.io/api/cosmos/staking/module/v1"
 	"cosmossdk.io/core/address"
 	"cosmossdk.io/core/legacy"
+	"cosmossdk.io/core/registry"
 	"cosmossdk.io/depinject"
 	"cosmossdk.io/x/tx/signing"
 
@@ -20,7 +21,7 @@ func ProvideInterfaceRegistry(
 	addressCodec address.Codec,
 	validatorAddressCodec address.ValidatorAddressCodec,
 	customGetSigners []signing.CustomGetSigner,
-) (types.InterfaceRegistry, error) {
+) (types.InterfaceRegistry, registry.InterfaceRegistrar, error) {
 	signingOptions := signing.Options{
 		AddressCodec:          addressCodec,
 		ValidatorAddressCodec: validatorAddressCodec,
@@ -34,14 +35,14 @@ func ProvideInterfaceRegistry(
 		SigningOptions: signingOptions,
 	})
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 
 	if err := interfaceRegistry.SigningContext().Validate(); err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 
-	return interfaceRegistry, nil
+	return interfaceRegistry, interfaceRegistry, nil
 }
 
 func ProvideLegacyAmino() legacy.Amino {
diff --git a/contrib/images/simd-env/Dockerfile b/contrib/images/simd-env/Dockerfile
index 88a144c10c..0ed5b9e436 100644
--- a/contrib/images/simd-env/Dockerfile
+++ b/contrib/images/simd-env/Dockerfile
@@ -27,6 +27,7 @@ COPY runtime/v2/go.mod runtime/v2/go.sum /work/runtime/v2/
 COPY server/v2/appmanager/go.mod server/v2/appmanager/go.sum /work/server/v2/appmanager/
 COPY server/v2/core/go.mod server/v2/core/go.sum /work/server/v2/core/
 COPY server/v2/stf/go.mod server/v2/stf/go.sum /work/server/v2/stf/
+COPY server/v2/cometbft/go.mod server/v2/cometbft/go.sum /work/server/v2/cometbft/
 
 RUN go mod download
 
diff --git a/core/context/context._test.go b/core/context/context._test.go
new file mode 100644
index 0000000000..df7d9dcd93
--- /dev/null
+++ b/core/context/context._test.go
@@ -0,0 +1,11 @@
+package context
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func Test_Sanity(t *testing.T) {
+	require.NotEqual(t, CometInfoKey, ExecModeKey)
+}
diff --git a/core/context/context.go b/core/context/context.go
index 215620e2a1..b330cb48b2 100644
--- a/core/context/context.go
+++ b/core/context/context.go
@@ -2,12 +2,18 @@ package context
 
 type contextKey uint8
 
-const (
-	ExecModeKey  contextKey = iota
-	CometInfoKey contextKey = iota
+type (
+	execModeKey    struct{}
+	cometInfoKey   struct{}
+	environmentKey struct{}
 )
 
-// EnvironmentContextKey is the context key for the environment.
-// A caller should not assume the environment is available in each context.
-// ref: https://github.com/cosmos/cosmos-sdk/issues/19640
-var EnvironmentContextKey = struct{}{}
+var (
+	ExecModeKey  = execModeKey{}
+	CometInfoKey = cometInfoKey{}
+
+	// EnvironmentContextKey is the context key for the environment.
+	// A caller should not assume the environment is available in each context.
+	// ref: https://github.com/cosmos/cosmos-sdk/issues/19640
+	EnvironmentContextKey = environmentKey{}
+)
diff --git a/core/store/store.go b/core/store/store.go
index 8e91aa4434..029f38dd78 100644
--- a/core/store/store.go
+++ b/core/store/store.go
@@ -133,7 +133,7 @@ var _ KVStore = (Writer)(nil)
 
 // ReaderMap represents a readonly view over all the accounts state.
 type ReaderMap interface {
-	// ReaderMap must return the state for the provided actor.
+	// GetReader must return the state for the provided actor.
 	// Storage implements might treat this as a prefix store over an actor.
 	// Prefix safety is on the implementer.
 	GetReader(actor []byte) (Reader, error)
@@ -142,7 +142,7 @@ type ReaderMap interface {
 // WriterMap represents a writable actor state.
 type WriterMap interface {
 	ReaderMap
-	// WriterMap must the return a WritableState
+	// GetWriter must the return a WritableState
 	// for the provided actor namespace.
 	GetWriter(actor []byte) (Writer, error)
 	// ApplyStateChanges applies all the state changes
diff --git a/go.work.example b/go.work.example
index 14dd182955..961d4f9a7c 100644
--- a/go.work.example
+++ b/go.work.example
@@ -13,6 +13,7 @@ use (
 	./math
 	./orm
 	./simapp
+	./simapp/v2
 	./tests
 	./server/v2/stf
 	./server/v2/appmanager
@@ -23,6 +24,7 @@ use (
 	./tools/confix
 	./tools/hubl
 	./x/accounts
+	./x/accounts/defaults/lockup
 	./x/auth
 	./x/authz
 	./x/bank
@@ -42,5 +44,4 @@ use (
 	./x/tx
 	./x/upgrade
 	./x/epochs
-	./x/accounts/defaults/lockup
 )
diff --git a/runtime/v2/app.go b/runtime/v2/app.go
index f74f0a6168..4f06127a94 100644
--- a/runtime/v2/app.go
+++ b/runtime/v2/app.go
@@ -124,5 +124,13 @@ func (a *App) GetLogger() log.Logger {
 }
 
 func (a *App) ExecuteGenesisTx(_ []byte) error {
-	panic("not implemented")
+	panic("App.ExecuteGenesisTx not supported in runtime/v2")
+}
+
+func (a *App) SetAppVersion(context.Context, uint64) error {
+	return nil
+}
+
+func (a *App) AppVersion(context.Context) (uint64, error) {
+	return 0, nil
 }
diff --git a/runtime/v2/manager.go b/runtime/v2/manager.go
index c45a98e2f3..6f0b8ca2e5 100644
--- a/runtime/v2/manager.go
+++ b/runtime/v2/manager.go
@@ -148,12 +148,6 @@ func (m *MM) InitGenesisJSON(
 
 		mod := m.modules[moduleName]
 
-		// skip genutil as it's a special module that handles gentxs
-		// TODO: should this be an empty extension interface on genutil for server v2?
-		if moduleName == "genutil" {
-			continue
-		}
-
 		// we might get an adapted module, a native core API module or a legacy module
 		switch module := mod.(type) {
 		case appmodule.HasGenesisAuto:
@@ -184,7 +178,7 @@ func (m *MM) InitGenesisJSON(
 			// only one module will update the validator set
 			if len(moduleValUpdates) > 0 {
 				if seenValUpdates {
-					return errors.New("validator InitGenesis updates already set by a previous module")
+					return fmt.Errorf("validator InitGenesis updates already set by a previous module: current module %s", moduleName)
 				} else {
 					seenValUpdates = true
 				}
@@ -284,7 +278,10 @@ type hasABCIEndBlock interface {
 }
 
 // EndBlock runs the end-block logic of all modules and tx validator updates
-func (m *MM) EndBlock() (endBlockFunc func(ctx context.Context) error, valUpdateFunc func(ctx context.Context) ([]appmodulev2.ValidatorUpdate, error)) {
+func (m *MM) EndBlock() (
+	endBlockFunc func(ctx context.Context) error,
+	valUpdateFunc func(ctx context.Context) ([]appmodulev2.ValidatorUpdate, error),
+) {
 	var validatorUpdates []appmodulev2.ValidatorUpdate
 	endBlockFunc = func(ctx context.Context) error {
 		for _, moduleName := range m.config.EndBlockers {
diff --git a/runtime/v2/module.go b/runtime/v2/module.go
index a61823d47a..042f4cadf7 100644
--- a/runtime/v2/module.go
+++ b/runtime/v2/module.go
@@ -14,6 +14,7 @@ import (
 	appv1alpha1 "cosmossdk.io/api/cosmos/app/v1alpha1"
 	autocliv1 "cosmossdk.io/api/cosmos/autocli/v1"
 	reflectionv1 "cosmossdk.io/api/cosmos/reflection/v1"
+	"cosmossdk.io/core/app"
 	"cosmossdk.io/core/appmodule"
 	appmodulev2 "cosmossdk.io/core/appmodule/v2"
 	"cosmossdk.io/core/comet"
@@ -125,10 +126,6 @@ func ProvideAppBuilder(
 		_, _ = fmt.Fprintln(os.Stderr, err.Error())
 	}
 
-	// TODO register as Invoker from simapp v2; remove if not needed
-	// std.RegisterInterfaces(interfaceRegistrar)
-	// std.RegisterLegacyAminoCodec(amino)
-
 	msgRouterBuilder := stf.NewMsgRouterBuilder()
 	app := &App{
 		storeKeys:          nil,
@@ -246,3 +243,9 @@ func ProvideGenesisTxHandler(appBuilder *AppBuilder) genesis.TxHandler {
 func ProvideCometService() comet.Service {
 	return &services.ContextAwareCometInfoService{}
 }
+
+// ProvideAppVersionModifier returns nil, `app.VersionModifier` is a feature of BaseApp and neither used nor required for runtim/v2.
+// nil is acceptable, see: https://github.com/cosmos/cosmos-sdk/blob/0a6ee406a02477ae8ccbfcbe1b51fc3930087f4c/x/upgrade/keeper/keeper.go#L438
+func ProvideAppVersionModifier(app *AppBuilder) app.VersionModifier {
+	return nil
+}
diff --git a/runtime/v2/services/comet.go b/runtime/v2/services/comet.go
index 3e22b49abc..028919fcd5 100644
--- a/runtime/v2/services/comet.go
+++ b/runtime/v2/services/comet.go
@@ -13,6 +13,9 @@ type ContextAwareCometInfoService struct{}
 
 // CometInfo implements comet.Service.
 func (c *ContextAwareCometInfoService) CometInfo(ctx context.Context) comet.Info {
-	ci := ctx.Value(corecontext.CometInfoKey).(comet.Info)
+	ci, ok := ctx.Value(corecontext.CometInfoKey).(comet.Info)
+	if !ok {
+		panic("comet.Info not found in context")
+	}
 	return ci
 }
diff --git a/store/v2/root/factory.go b/store/v2/root/factory.go
index ec81208f01..327a033090 100644
--- a/store/v2/root/factory.go
+++ b/store/v2/root/factory.go
@@ -54,7 +54,7 @@ func CreateRootStore(opts *FactoryOptions) (store.RootStore, error) {
 		sc        *commitment.CommitStore
 		err       error
 		ensureDir = func(dir string) error {
-			if err := os.MkdirAll(dir, 0x0755); err != nil {
+			if err := os.MkdirAll(dir, 0o0755); err != nil {
 				return fmt.Errorf("failed to create directory %s: %w", dir, err)
 			}
 			return nil