diff --git a/client/chain/chain.go b/client/chain/chain.go
index 3f9f5a17..75bec083 100644
--- a/client/chain/chain.go
+++ b/client/chain/chain.go
@@ -6,7 +6,9 @@ import (
 	"encoding/hex"
 	"encoding/json"
 	"fmt"
+	"io/ioutil"
 	"math"
+	"net/http"
 	"strconv"
 	"strings"
 	"sync"
@@ -61,6 +63,7 @@ const (
 	defaultBroadcastTimeout          = 40 * time.Second
 	defaultTimeoutHeight             = 20
 	defaultTimeoutHeightSyncInterval = 10 * time.Second
+	defaultOfacListUrl               = "https://raw.githubusercontent.com/InjectiveLabs/injective-lists/master/wallets/ofac.json"
 	SpotOrderbook                    = "injective.exchange.v1beta1.EventOrderbookUpdate.spot_orderbooks"
 	DerivativeOrderbook              = "injective.exchange.v1beta1.EventOrderbookUpdate.derivative_orderbooks"
 )
@@ -321,6 +324,8 @@ type chainClient struct {
 
 	sessionEnabled bool
 
+	ofacTxList []string
+
 	authQueryClient          authtypes.QueryClient
 	authzQueryClient         authztypes.QueryClient
 	bankQueryClient          banktypes.QueryClient
@@ -342,6 +347,29 @@ type chainClient struct {
 	canSign bool
 }
 
+func (cc *chainClient) loadOfacList() error {
+	response, err := http.Get(defaultOfacListUrl)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+
+	if response.StatusCode != http.StatusOK {
+		return fmt.Errorf("request to the OFAC upstream failed with code: %s", response.Status)
+	}
+
+	body, err := ioutil.ReadAll(response.Body)
+	if err != nil {
+		return err
+	}
+
+	var ofacList []string
+	if err := json.Unmarshal(body, &ofacList); err != nil {
+		return err
+	}
+	return nil
+}
+
 func NewChainClient(
 	ctx client.Context,
 	network common.Network,
@@ -453,6 +481,11 @@ func NewChainClient(
 		go cc.syncTimeoutHeight()
 	}
 
+	err = cc.loadOfacList()
+	if err != nil {
+		err = errors.Wrap(err, "failed to load the OFAC list")
+	}
+
 	return cc, nil
 }
 
@@ -774,6 +807,29 @@ func (c *chainClient) BuildSignedTx(clientCtx client.Context, accNum, accSeq, in
 }
 
 func (c *chainClient) buildSignedTx(clientCtx client.Context, txf tx.Factory, msgs ...sdk.Msg) ([]byte, error) {
+	isAddrInTheList := func(list []string, addr string) bool {
+		for _, item := range list {
+			if item == addr {
+				return true
+			}
+		}
+		return false
+	}
+	k, err := txf.Keybase().Key(clientCtx.FromName)
+	if err != nil {
+		err = errors.Wrap(err, "error parsing signer account address")
+		return nil, err
+	}
+	signerAddressPubKey, err := k.GetPubKey()
+	if err != nil {
+		err = errors.Wrap(err, "error getting signer public key")
+		return nil, err
+	}
+	if isAddrInTheList(c.ofacTxList, sdk.AccAddress(signerAddressPubKey.Address()).String()) {
+		err = errors.Errorf("Address is in the OFAC list")
+		return nil, err
+	}
+
 	ctx := context.Background()
 	if clientCtx.Simulate {
 		simTxBytes, err := txf.BuildSimTx(msgs...)
@@ -796,7 +852,7 @@ func (c *chainClient) buildSignedTx(clientCtx client.Context, txf tx.Factory, ms
 		c.gasWanted = adjustedGas
 	}
 
-	txf, err := PrepareFactory(clientCtx, txf)
+	txf, err = PrepareFactory(clientCtx, txf)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to prepareFactory")
 	}
diff --git a/client/chain/chain_test.go b/client/chain/chain_test.go
index 0016f37f..2b8c10d6 100644
--- a/client/chain/chain_test.go
+++ b/client/chain/chain_test.go
@@ -1,6 +1,12 @@
 package chain
 
 import (
+	"context"
+	exchangetypes "github.com/InjectiveLabs/sdk-go/chain/exchange/types"
+	exchangeclient "github.com/InjectiveLabs/sdk-go/client/exchange"
+	spotExchangePB "github.com/InjectiveLabs/sdk-go/exchange/spot_exchange_rpc/pb"
+	"github.com/shopspring/decimal"
+	"github.com/stretchr/testify/assert"
 	"os"
 	"testing"
 
@@ -51,6 +57,68 @@ func createClient(senderAddress cosmtypes.AccAddress, cosmosKeyring keyring.Keyr
 	return chainClient, err
 }
 
+func TestOfacList(t *testing.T) {
+	network := common.LoadNetwork("testnet", "lb")
+	tmClient, err := rpchttp.New(network.TmEndpoint, "/websocket")
+	assert.NoError(t, err)
+
+	senderAddress, cosmosKeyring, err := accountForTests()
+	assert.NoError(t, err)
+
+	clientCtx, err := NewClientContext(
+		network.ChainId,
+		senderAddress.String(),
+		cosmosKeyring,
+	)
+	assert.NoError(t, err)
+
+	clientCtx = clientCtx.WithNodeURI(network.TmEndpoint).WithClient(tmClient)
+
+	exchangeClient, err := exchangeclient.NewExchangeClient(network)
+	assert.NoError(t, err)
+	ctx := context.Background()
+	req := spotExchangePB.MarketsRequest{
+		MarketStatus: "active",
+	}
+	res, err := exchangeClient.GetSpotMarkets(ctx, &req)
+	assert.NoError(t, err)
+
+	marketsAssistant, err := NewMarketsAssistantInitializedFromChain(ctx, exchangeClient)
+	assert.NoError(t, err)
+
+	cc, err := createClient(senderAddress, cosmosKeyring, network)
+	assert.NoError(t, err)
+
+	defaultSubaccountID := cc.DefaultSubaccount(senderAddress)
+	marketId := res.Markets[0].MarketId
+	amount := decimal.NewFromFloat(2)
+	price := decimal.NewFromFloat(1.02)
+
+	order := cc.CreateSpotOrder(
+		defaultSubaccountID,
+		&SpotOrderData{
+			OrderType:    exchangetypes.OrderType_BUY, //BUY SELL BUY_PO SELL_PO
+			Quantity:     amount,
+			Price:        price,
+			FeeRecipient: senderAddress.String(),
+			MarketId:     marketId,
+		},
+		marketsAssistant,
+	)
+
+	msg := new(exchangetypes.MsgCreateSpotLimitOrder)
+	msg.Sender = senderAddress.String()
+	msg.Order = exchangetypes.SpotOrder(*order)
+
+	accNum, accSeq := cc.GetAccNonce()
+
+	cc.(*chainClient).ofacTxList = []string{
+		senderAddress.String(),
+	}
+	_, err = cc.BuildSignedTx(clientCtx, accNum, accSeq, 20000, msg)
+	assert.Error(t, err)
+}
+
 func TestDefaultSubaccount(t *testing.T) {
 	network := common.LoadNetwork("devnet", "lb")
 	senderAddress, cosmosKeyring, err := accountForTests()
diff --git a/examples/chain/8_OfflineSigning/example.go b/examples/chain/8_OfflineSigning/example.go
index 00cacf59..1002b13e 100644
--- a/examples/chain/8_OfflineSigning/example.go
+++ b/examples/chain/8_OfflineSigning/example.go
@@ -32,7 +32,7 @@ func LoadTxFromFile(fileName string) ([]byte, error) {
 }
 
 func main() {
-	network := common.LoadNetwork("devnet", "")
+	network := common.LoadNetwork("devnet", "lb")
 	tmClient, err := rpchttp.New(network.TmEndpoint, "/websocket")
 	if err != nil {
 		panic(err)
@@ -86,7 +86,7 @@ func main() {
 	}
 
 	defaultSubaccountID := chainClient.DefaultSubaccount(senderAddress)
-	marketId := "0xa508cb32923323679f29a032c70342c147c17d0145625922b0ef22e955c844c0"
+	marketId := "0x01edfab47f124748dc89998eb33144af734484ba07099014594321729a0ca16b"
 	amount := decimal.NewFromFloat(2)
 	price := decimal.NewFromFloat(1.02)