diff --git a/iguana/exchanges/LP_bitcoin.c b/iguana/exchanges/LP_bitcoin.c
index de82fd670..139051a72 100644
--- a/iguana/exchanges/LP_bitcoin.c
+++ b/iguana/exchanges/LP_bitcoin.c
@@ -2041,8 +2041,13 @@ bits256 bits256_calctxid(char *symbol,uint8_t *serialized,int32_t  len)
 bits256 bits256_calcaddrhash(char *symbol,uint8_t *serialized,int32_t  len)
 {
     bits256 hash;
+    memset(hash.bytes,0,sizeof(hash));
     if ( strcmp(symbol,"GRS") != 0 )
-        hash = bits256_doublesha256(0,serialized,len);
+    {
+        if ( strcmp(symbol,"SMART") != 0 )
+            hash = bits256_doublesha256(0,serialized,len);
+        else HashKeccak(hash.bytes,serialized,len);
+    }
     else
     {
         HashGroestl(hash.bytes,serialized,len);
diff --git a/iguana/exchanges/LP_include.h b/iguana/exchanges/LP_include.h
index 92dd78727..28c1244f5 100644
--- a/iguana/exchanges/LP_include.h
+++ b/iguana/exchanges/LP_include.h
@@ -522,6 +522,7 @@ int32_t iguana_signrawtransaction(void *ctx,char *symbol,uint8_t wiftaddr,uint8_
 //void LP_butxo_swapfields_set(struct LP_utxoinfo *butxo);
 struct LP_address_utxo *LP_address_utxofind(struct iguana_info *coin,char *coinaddr,bits256 txid,int32_t vout);
 int64_t LP_myzcredits();
+void HashKeccak(uint8_t *hash,void *data,size_t len);
 void test_validate(struct iguana_info *coin,char *signedtx);
 void LP_instantdex_depositadd(char *coinaddr,bits256 txid);
 int64_t LP_instantdex_creditcalc(struct iguana_info *coin,int32_t dispflag,bits256 txid,char *refaddr,char *origcoinaddr);
diff --git a/iguana/keccak.c b/iguana/keccak.c
index 1f31fe0b3..302f220a6 100644
--- a/iguana/keccak.c
+++ b/iguana/keccak.c
@@ -1822,7 +1822,14 @@ sph_keccak512_addbits_and_close(void *cc, unsigned ub, unsigned n, void *dst)
         keccak_close64(cc, ub, n, dst);
 }
  
- 
+void HashKeccak(uint8_t *hash,void *data,size_t len)
+{
+    sph_keccak256_context ctx_keccak;
+    sph_keccak256_init(&ctx_keccak);
+    sph_keccak256(&ctx_keccak,data,len);
+    sph_keccak256_close(&ctx_keccak,(void *)hash);
+}
+
 #ifdef __cplusplus
 }
 #endif