diff --git a/stores/chain_test.go b/stores/chain_test.go
index 08b959ca90..3770887733 100644
--- a/stores/chain_test.go
+++ b/stores/chain_test.go
@@ -365,4 +365,19 @@ func TestProcessChainUpdate(t *testing.T) {
 	}); !errors.Is(err, sql.ErrOutputNotFound) {
 		t.Fatal("expected ErrOutputNotFound", err)
 	}
+
+	// assert we can't apply an index and pass events with mismatching index
+	if err := ss.ProcessChainUpdate(context.Background(), func(tx sql.ChainUpdateTx) error {
+		return tx.WalletApplyIndex(types.ChainIndex{Height: 5}, nil, nil, []wallet.Event{
+			{
+				ID:        types.Hash256{1},
+				Index:     types.ChainIndex{Height: 6},
+				Type:      wallet.EventTypeV2Transaction,
+				Data:      wallet.EventV2Transaction{},
+				Timestamp: now,
+			},
+		}, now)
+	}); !errors.Is(err, sql.ErrIndexMissmatch) {
+		t.Fatal("expected ErrIndexMissmatch", err)
+	}
 }
diff --git a/stores/sql/chain.go b/stores/sql/chain.go
index 625ce5d7ea..bf697dce52 100644
--- a/stores/sql/chain.go
+++ b/stores/sql/chain.go
@@ -13,6 +13,7 @@ import (
 )
 
 var (
+	ErrIndexMissmatch = errors.New("index missmatch")
 	ErrOutputNotFound = errors.New("output not found")
 )
 
diff --git a/stores/sql/mysql/chain.go b/stores/sql/mysql/chain.go
index 73cd05482a..5cfe536068 100644
--- a/stores/sql/mysql/chain.go
+++ b/stores/sql/mysql/chain.go
@@ -44,7 +44,7 @@ func (c chainUpdateTx) WalletApplyIndex(index types.ChainIndex, created, spent [
 			if res, err := deleteSpentStmt.Exec(c.ctx, ssql.Hash256(e.ID)); err != nil {
 				return fmt.Errorf("failed to delete spent output: %w", err)
 			} else if n, err := res.RowsAffected(); err != nil {
-				return fmt.Errorf("failed to get rows affected: %w", err)
+				return fmt.Errorf("failed to delete spent output: %w", err)
 			} else if n != 1 {
 				return fmt.Errorf("failed to delete spent output: %w", ssql.ErrOutputNotFound)
 			}
@@ -86,6 +86,14 @@ func (c chainUpdateTx) WalletApplyIndex(index types.ChainIndex, created, spent [
 
 		// insert new events
 		for _, e := range events {
+			if e.Index != index {
+				return fmt.Errorf("%w, event index %v != applied index %v", ssql.ErrIndexMissmatch, e.Index, index)
+			} else if e.ID == (types.Hash256{}) {
+				return fmt.Errorf("event id is required")
+			} else if e.Timestamp.IsZero() {
+				return fmt.Errorf("event timestamp is required")
+			}
+
 			c.l.Debugw(fmt.Sprintf("create event %v", e.ID), "height", index.Height, "block_id", index.ID)
 			data, err := json.Marshal(e.Data)
 			if err != nil {
@@ -132,7 +140,7 @@ func (c chainUpdateTx) WalletRevertIndex(index types.ChainIndex, removed, unspen
 			if res, err := deleteRemovedStmt.Exec(c.ctx, ssql.Hash256(e.ID)); err != nil {
 				return fmt.Errorf("failed to delete removed output: %w", err)
 			} else if n, err := res.RowsAffected(); err != nil {
-				return fmt.Errorf("failed to get rows affected: %w", err)
+				return fmt.Errorf("failed to delete removed output: %w", err)
 			} else if n != 1 {
 				return fmt.Errorf("failed to delete removed output: %w", ssql.ErrOutputNotFound)
 			}
@@ -169,7 +177,7 @@ func (c chainUpdateTx) WalletRevertIndex(index types.ChainIndex, removed, unspen
 	if err != nil {
 		return fmt.Errorf("failed to delete events: %w", err)
 	} else if n, err := res.RowsAffected(); err != nil {
-		return fmt.Errorf("failed to get rows affected: %w", err)
+		return fmt.Errorf("failed to delete events: %w", err)
 	} else if n > 0 {
 		c.l.Debugw(fmt.Sprintf("removed %d events", n), "height", index.Height, "block_id", index.ID)
 	}
diff --git a/stores/sql/sqlite/chain.go b/stores/sql/sqlite/chain.go
index 95d16434c5..4fa869ad66 100644
--- a/stores/sql/sqlite/chain.go
+++ b/stores/sql/sqlite/chain.go
@@ -47,7 +47,7 @@ func (c chainUpdateTx) WalletApplyIndex(index types.ChainIndex, created, spent [
 			if res, err := deleteSpentStmt.Exec(c.ctx, ssql.Hash256(e.ID)); err != nil {
 				return fmt.Errorf("failed to delete spent output: %w", err)
 			} else if n, err := res.RowsAffected(); err != nil {
-				return fmt.Errorf("failed to get rows affected: %w", err)
+				return fmt.Errorf("failed to delete spent output: %w", err)
 			} else if n != 1 {
 				return fmt.Errorf("failed to delete spent output: %w", ssql.ErrOutputNotFound)
 			}
@@ -90,9 +90,11 @@ func (c chainUpdateTx) WalletApplyIndex(index types.ChainIndex, created, spent [
 		// insert new events
 		for _, e := range events {
 			if e.Index != index {
-				return fmt.Errorf("event index %v doesn't match index being applied %v", e.Index, index)
+				return fmt.Errorf("%w, event index %v != applied index %v", ssql.ErrIndexMissmatch, e.Index, index)
 			} else if e.ID == (types.Hash256{}) {
 				return fmt.Errorf("event id is required")
+			} else if e.Timestamp.IsZero() {
+				return fmt.Errorf("event timestamp is required")
 			}
 
 			c.l.Debugw(fmt.Sprintf("create event %v", e.ID), "height", index.Height, "block_id", index.ID)
@@ -141,7 +143,7 @@ func (c chainUpdateTx) WalletRevertIndex(index types.ChainIndex, removed, unspen
 			if res, err := deleteRemovedStmt.Exec(c.ctx, ssql.Hash256(e.ID)); err != nil {
 				return fmt.Errorf("failed to delete removed output: %w", err)
 			} else if n, err := res.RowsAffected(); err != nil {
-				return fmt.Errorf("failed to get rows affected: %w", err)
+				return fmt.Errorf("failed to delete removed output: %w", err)
 			} else if n != 1 {
 				return fmt.Errorf("failed to delete removed output: %w", ssql.ErrOutputNotFound)
 			}
@@ -178,7 +180,7 @@ func (c chainUpdateTx) WalletRevertIndex(index types.ChainIndex, removed, unspen
 	if err != nil {
 		return fmt.Errorf("failed to delete events: %w", err)
 	} else if n, err := res.RowsAffected(); err != nil {
-		return fmt.Errorf("failed to get rows affected: %w", err)
+		return fmt.Errorf("failed to delete events: %w", err)
 	} else if n > 0 {
 		c.l.Debugw(fmt.Sprintf("removed %d events", n), "height", index.Height, "block_id", index.ID)
 	}