diff --git a/zetaclient/chains/ton/observer/inbound.go b/zetaclient/chains/ton/observer/inbound.go
index 4436b02369..36f08af46e 100644
--- a/zetaclient/chains/ton/observer/inbound.go
+++ b/zetaclient/chains/ton/observer/inbound.go
@@ -132,8 +132,8 @@ func (ob *Observer) voteInbound(ctx context.Context, tx *toncontracts.Transactio
 		return "", nil
 	}
 
-	// todo add compliance check
-	//   https://github.com/zeta-chain/node/issues/2916
+	// TODO: Add compliance check
+	// https://github.com/zeta-chain/node/issues/2916
 
 	blockHeader, err := ob.client.GetBlockHeader(ctx, tx.BlockID, 0)
 	if err != nil {
@@ -150,6 +150,7 @@ func (ob *Observer) voteInbound(ctx context.Context, tx *toncontracts.Transactio
 	return ob.voteDeposit(ctx, tx, sender, amount, memo, seqno)
 }
 
+// extractInboundData parses Gateway tx into deposit (TON sender, amount, memo)
 func extractInboundData(tx *toncontracts.Transaction) (string, math.Uint, []byte, error) {
 	if tx.Operation == toncontracts.OpDeposit {
 		d, err := tx.Deposit()
@@ -193,6 +194,9 @@ func (ob *Observer) voteDeposit(
 		inboundHash     = liteapi.TransactionHashToString(tx.Lt, ton.Bits256(tx.Hash()))
 	)
 
+	// TODO: use protocol contract v2 for deposit
+	// https://github.com/zeta-chain/node/issues/2967
+
 	msg := zetacore.GetInboundVoteMessage(
 		sender,
 		ob.Chain().ChainId,
diff --git a/zetaclient/chains/ton/observer/observer.go b/zetaclient/chains/ton/observer/observer.go
index c5fd26aad3..e20742116a 100644
--- a/zetaclient/chains/ton/observer/observer.go
+++ b/zetaclient/chains/ton/observer/observer.go
@@ -68,13 +68,11 @@ func (ob *Observer) Start(ctx context.Context) {
 	// watch for incoming txs and post votes to zetacore
 	bg.Work(ctx, ob.watchInbound, bg.WithName("WatchInbound"), bg.WithLogger(ob.Logger().Inbound))
 
-	// todo
-	//  watchInboundTracker https://github.com/zeta-chain/node/issues/2935
+	// TODO: watchInboundTracker
+	// https://github.com/zeta-chain/node/issues/2935
 
-	// todo outbounds/withdrawals https://github.com/zeta-chain/node/issues/2807
-	//   watchOutbound
-	//   watchGasPrice
-	//   watchRPCStatus
+	// TODO: outbounds/withdrawals: (watchOutbound, watchGasPrice, watchRPCStatus)
+	// https://github.com/zeta-chain/node/issues/2807
 }
 
 func (ob *Observer) VoteOutboundIfConfirmed(_ context.Context, _ *types.CrossChainTx) (bool, error) {