diff --git a/zetaclient/bitcoin_client.go b/zetaclient/bitcoin_client.go
index 3db06609f1..c9aa882991 100644
--- a/zetaclient/bitcoin_client.go
+++ b/zetaclient/bitcoin_client.go
@@ -367,7 +367,7 @@ func (ob *BitcoinChainClient) IsSendOutTxProcessed(sendHash string, nonce uint64
 		ob.logger.ObserveOutTx.Warn().Msg("IsSendOutTxProcessed: res.Amount > 0")
 		amount = res.Amount
 	} else if res.Amount == 0 {
-		ob.logger.ObserveOutTx.Error().Msgf("IsSendOutTxProcessed: res.Amount == 0, using original amount %f", amount)
+		ob.logger.ObserveOutTx.Error().Msg("IsSendOutTxProcessed: res.Amount == 0")
 		return false, false, nil
 	} else {
 		amount = -res.Amount
@@ -921,32 +921,6 @@ func (ob *BitcoinChainClient) checkTSSVin(vins []btcjson.Vin, nonce uint64) erro
 	return nil
 }
 
-// TODO: develop a well-defined cctx validation in zetacore.
-func (ob *BitcoinChainClient) ValidateCctxParams(params *types.OutboundTxParams) error {
-	// More broadly, we should probably think about the address format that we support
-	// 1. legacy P2PKH like 2Mz1XjXzgQCxXfazTAmsTAj46dQkmAdK5X2
-	// 2. segwit P2PKH like tb1qy9pqmk2pd9sv63g27jt8r657wy0d9ueeh0nqur, this is what we support for now
-	// 3. taproot P2PKH?
-	// 4. other P2SH?
-
-	// validate receiver address
-	addr, err := btcutil.DecodeAddress(params.Receiver, config.BitconNetParams)
-	if err != nil {
-		return err
-	}
-	_, ok := addr.(*btcutil.AddressWitnessPubKeyHash)
-	if err != nil || !ok {
-		return fmt.Errorf("ValidateCctxParams: cannot convert address %s to P2WPKH address", params.Receiver)
-	}
-
-	// validate amount
-	_, err = getSatoshis(float64(params.Amount.Uint64()) / 1e8)
-	if err != nil {
-		return fmt.Errorf("ValidateCctxParams: invalid amount %d", params.Amount)
-	}
-	return nil
-}
-
 // Vout is valid if:
 //   - The first output is the nonce-mark
 //   - The second output is the correct payment to recipient