diff --git a/iguana/exchanges/LP_include.h b/iguana/exchanges/LP_include.h
index d0d2d282b..bafcc2950 100644
--- a/iguana/exchanges/LP_include.h
+++ b/iguana/exchanges/LP_include.h
@@ -408,6 +408,7 @@ struct LP_address_utxo *LP_address_utxofind(struct iguana_info *coin,char *coina
 int32_t LP_destaddr(char *destaddr,cJSON *item);
 int32_t LP_waitmempool(char *symbol,char *coinaddr,bits256 txid,int32_t vout,int32_t duration);
 char *LP_statslog_disp(int32_t n,uint32_t starttime,uint32_t endtime,char *refgui,bits256 refpubkey);
+int32_t LP_validSPV(char *symbol,char *coinaddr,bits256 txid,int32_t vout);
 struct LP_transaction *LP_transactionfind(struct iguana_info *coin,bits256 txid);
 cJSON *LP_transactioninit(struct iguana_info *coin,bits256 txid,int32_t iter,cJSON *txobj);
 int32_t LP_mempoolscan(char *symbol,bits256 searchtxid);
diff --git a/iguana/exchanges/LP_nativeDEX.c b/iguana/exchanges/LP_nativeDEX.c
index b9ecb4f8a..86bb4fcdd 100644
--- a/iguana/exchanges/LP_nativeDEX.c
+++ b/iguana/exchanges/LP_nativeDEX.c
@@ -595,7 +595,7 @@ void LP_coinsloop(void *_coins)
                     backupep = ep;
                 HASH_ITER(hh,coin->addresses,ap,atmp)
                 {
-                    break;
+                    break; // causes timeouts probably due to too much usage, SPV validation done on tx spending
                     DL_FOREACH_SAFE(ap->utxos,up,tmp)
                     {
                         if ( up->U.height > 0 && up->spendheight < 0 )
diff --git a/iguana/exchanges/LP_ordermatch.c b/iguana/exchanges/LP_ordermatch.c
index 582dc3733..8130706bf 100644
--- a/iguana/exchanges/LP_ordermatch.c
+++ b/iguana/exchanges/LP_ordermatch.c
@@ -246,7 +246,7 @@ int32_t LP_nearest_utxovalue(struct iguana_info *coin,char *coinaddr,struct LP_a
             //printf("nearest i.%d target %.8f val %.8f dist %.8f mindist %.8f mini.%d spent.%d\n",i,dstr(targetval),dstr(up->U.value),dstr(dist),dstr(mindist),mini,up->spendheight);
             if ( up->spendheight <= 0 )
             {
-                if ( (coin->electrum == 0 || up->SPV > 0) && dist >= 0 && dist < mindist )
+                if ( dist >= 0 && dist < mindist ) //(coin->electrum == 0 || up->SPV > 0) &&
                 {
                     //printf("(%.8f %.8f %.8f).%d ",dstr(up->U.value),dstr(dist),dstr(mindist),mini);
                     mini = i;
@@ -594,6 +594,26 @@ int32_t LP_aliceonly(char *symbol)
     else return(0);
 }
 
+int32_t LP_validSPV(char *symbol,char *coinaddr,bits256 txid,int32_t vout)
+{
+    struct electrum_info *ep,*backupep; struct LP_address_utxo *up; struct iguana_info *coin;
+    coin = LP_coinfind(symbol);
+    if ( coin != 0 && (ep= coin->electrum) != 0 )
+    {
+        if ( (up= LP_address_utxofind(coin,coinaddr,txid,vout)) != 0 )
+        {
+            if ( up->SPV < 0 )
+                return(-1);
+            if ( (backupep= ep->prev) == 0 )
+                backupep = ep;
+            up->SPV = LP_merkleproof(coin,backupep,up->U.txid,up->U.height);
+            if ( up->SPV <= 0 )
+                return(-1);
+        }
+    }
+    return(0);
+}
+
 int32_t LP_tradecommand(void *ctx,char *myipaddr,int32_t pubsock,cJSON *argjson,uint8_t *data,int32_t datalen)
 {
     char *method,*msg,*retstr,str[65]; int32_t DEXselector = 0; uint64_t value,value2; cJSON *retjson; double qprice,price,bid,ask; struct LP_utxoinfo A,B,*autxo,*butxo; struct iguana_info *coin; struct LP_address_utxo *utxos[1000]; struct LP_quoteinfo Q; int32_t retval = -1,recalc,max=(int32_t)(sizeof(utxos)/sizeof(*utxos));
@@ -605,8 +625,28 @@ int32_t LP_tradecommand(void *ctx,char *myipaddr,int32_t pubsock,cJSON *argjson,
         LP_tradecommand_log(argjson);
         //printf("LP_tradecommand: check received method %s aliceid.%llx\n",method,(long long)Q.aliceid);
         retval = 1;
+        if ( LP_validSPV(Q.destcoin,Q.destaddr,Q.desttxid,Q.destvout) < 0 )
+        {
+            printf("%s dest %s failed SPV check\n",Q.destcoin,bits256_str(str,Q.desttxid));
+            return(retval);
+        }
+        else if (LP_validSPV(Q.destcoin,Q.destaddr,Q.feetxid,Q.feevout) < 0 )
+        {
+            printf("%s dexfee %s failed SPV check\n",Q.destcoin,bits256_str(str,Q.feetxid));
+            return(retval);
+        }
         if ( strcmp(method,"reserved") == 0 )
         {
+            if ( LP_validSPV(Q.srccoin,Q.coinaddr,Q.txid,Q.vout) < 0 )
+            {
+                printf("%s src %s failed SPV check\n",Q.srccoin,bits256_str(str,Q.txid));
+                return(retval);
+            }
+            else if (LP_validSPV(Q.srccoin,Q.coinaddr,Q.txid2,Q.vout2) < 0 )
+            {
+                printf("%s src2 %s failed SPV check\n",Q.srccoin,bits256_str(str,Q.txid2));
+                return(retval);
+            }
             if ( bits256_cmp(G.LP_mypub25519,Q.desthash) == 0 && bits256_cmp(G.LP_mypub25519,Q.srchash) != 0 && LP_alice_eligible() > 0 )
             {
                 printf("alice %s received RESERVED.(%s)\n",bits256_str(str,G.LP_mypub25519),jprint(argjson,0));
@@ -620,7 +660,17 @@ int32_t LP_tradecommand(void *ctx,char *myipaddr,int32_t pubsock,cJSON *argjson,
         {
             if ( bits256_cmp(G.LP_mypub25519,Q.desthash) == 0 && bits256_cmp(G.LP_mypub25519,Q.srchash) != 0 )
             {
-                //printf("alice %s received CONNECTED.(%s)\n",bits256_str(str,G.LP_mypub25519),jprint(argjson,0));
+                if ( LP_validSPV(Q.srccoin,Q.coinaddr,Q.txid,Q.vout) < 0 )
+                {
+                    printf("%s src %s failed SPV check\n",Q.srccoin,bits256_str(str,Q.txid));
+                    return(retval);
+                }
+                else if (LP_validSPV(Q.srccoin,Q.coinaddr,Q.txid2,Q.vout2) < 0 )
+                {
+                    printf("%s src2 %s failed SPV check\n",Q.srccoin,bits256_str(str,Q.txid2));
+                    return(retval);
+                }
+               //printf("alice %s received CONNECTED.(%s)\n",bits256_str(str,G.LP_mypub25519),jprint(argjson,0));
                 if ( (retstr= LP_connectedalice(argjson)) != 0 )
                     free(retstr);
             }
diff --git a/iguana/exchanges/LP_transaction.c b/iguana/exchanges/LP_transaction.c
index 6e2b4db1d..48e710878 100644
--- a/iguana/exchanges/LP_transaction.c
+++ b/iguana/exchanges/LP_transaction.c
@@ -854,7 +854,7 @@ int64_t LP_komodo_interest(bits256 txid,int64_t value)
 
 int32_t LP_vins_select(void *ctx,struct iguana_info *coin,int64_t *totalp,int64_t amount,struct vin_info *V,struct LP_address_utxo **utxos,int32_t numunspents,int32_t suppress_pubkeys,int32_t ignore_cltverr,bits256 privkey,cJSON *privkeys,cJSON *vins,uint8_t *script,int32_t scriptlen,bits256 utxotxid,int32_t utxovout,int32_t dustcombine)
 {
-    char wifstr[128],spendscriptstr[128],str[65]; int32_t i,j,n,numpre,ind,abovei,belowi,maxmode=0; struct vin_info *vp; cJSON *txobj; struct LP_address_utxo *up,*min0,*min1,*preselected[3]; struct electrum_info *ep,*backupep; int64_t value,interest,interestsum,above,below,remains = amount,total = 0;
+    char wifstr[128],spendscriptstr[128],str[65]; int32_t i,j,n,numpre,ind,abovei,belowi,maxmode=0; struct vin_info *vp; cJSON *txobj; struct LP_address_utxo *up,*min0,*min1,*preselected[3]; int64_t value,interest,interestsum,above,below,remains = amount,total = 0;
     *totalp = 0;
     interestsum = 0;
     init_hexbytes_noT(spendscriptstr,script,scriptlen);
@@ -955,16 +955,8 @@ int32_t LP_vins_select(void *ctx,struct iguana_info *coin,int64_t *totalp,int64_
                     break;
             if ( j < numpre )
                 continue;
-            if ( (ep= coin->electrum) != 0 && up->SPV <= 0 )
-            {
-                if ( up->SPV < 0 )
-                    continue;
-                if ( (backupep= ep->prev) == 0 )
-                    backupep = ep;
-                up->SPV = LP_merkleproof(coin,backupep,up->U.txid,up->U.height);
-                if ( up->SPV <= 0 )
-                    continue;
-            }
+            if ( LP_validSPV(coin->symbol,coin->smartaddr,up->U.txid,up->U.vout) < 0 )
+                continue;
         }
         
         up->spendheight = 1;