diff --git a/basilisk/basilisk.c b/basilisk/basilisk.c
index cd3bfff76..578a97b04 100755
--- a/basilisk/basilisk.c
+++ b/basilisk/basilisk.c
@@ -86,7 +86,7 @@ uint8_t *basilisk_jsondata(int32_t extraoffset,uint8_t **ptrp,uint8_t *space,int
     if ( (hexstr= jstr(sendjson,"data")) != 0 )
     {
         hexdata = get_dataptr(0,&allocptr,&hexlen,hexspace,sizeof(hexspace),hexstr);
-        printf("delete data.%s from sendjson\n",hexstr);
+        //printf("delete data.%s from sendjson\n",hexstr);
         jdelete(sendjson,"data");
     }
     *ptrp = 0;
@@ -409,24 +409,6 @@ char *basilisk_standardservice(char *CMD,struct supernet_info *myinfo,bits256 ha
     return(jprint(retjson,1));
 }
 
-int32_t basilisk_blocksubmit(struct supernet_info *myinfo,struct iguana_info *btcd,struct iguana_info *virt,char *blockstr,bits256 hash2)
-{
-    int32_t datalen; uint8_t *data,space[16384],*allocptr; cJSON *valsobj; char *str;
-    if ( (data= get_dataptr(sizeof(struct iguana_msghdr) + BASILISK_HDROFFSET,&allocptr,&datalen,space,sizeof(space),blockstr)) != 0 )
-    {
-        gecko_blockarrived(myinfo,virt,"127.0.0.1",data,datalen,hash2);
-        valsobj = cJSON_CreateObject();
-        jaddnum(valsobj,"fanout",-1);
-        jaddstr(valsobj,"symbol",virt->symbol);
-        if ( (str= basilisk_standardservice("BLK",myinfo,hash2,valsobj,blockstr,0)) != 0 )
-            free(str);
-        free_json(valsobj);
-    }
-    if ( allocptr != 0 )
-        free(allocptr);
-    return(0);
-}
-
 #include "basilisk_bitcoin.c"
 #include "basilisk_nxt.c"
 #include "basilisk_ether.c"
diff --git a/gecko/gecko.c b/gecko/gecko.c
index 22b7ec255..f973034e2 100755
--- a/gecko/gecko.c
+++ b/gecko/gecko.c
@@ -39,6 +39,34 @@
 #include "gecko_miner.c"
 #include "gecko_blocks.c"
 
+int32_t basilisk_blocksubmit(struct supernet_info *myinfo,struct iguana_info *btcd,struct iguana_info *virt,char *blockstr,bits256 hash2)
+{
+    int32_t datalen; uint8_t *data,space[16384],*allocptr; cJSON *valsobj=0,*retjson; char *str,*str2;
+    if ( (data= get_dataptr(sizeof(struct iguana_msghdr) + BASILISK_HDROFFSET,&allocptr,&datalen,space,sizeof(space),blockstr)) != 0 )
+    {
+        if ( (str= gecko_blockarrived(myinfo,virt,"127.0.0.1",data,datalen,hash2)) != 0 )
+        {
+            if ( (retjson= cJSON_Parse(str)) != 0 )
+            {
+                if ( jobj(retjson,"error") == 0 )
+                {
+                    valsobj = cJSON_CreateObject();
+                    jaddnum(valsobj,"fanout",-1);
+                    jaddstr(valsobj,"symbol",virt->symbol);
+                    if ( (str2= basilisk_standardservice("BLK",myinfo,hash2,valsobj,blockstr,0)) != 0 )
+                        free(str2);
+                    free_json(valsobj);
+                }
+                free_json(retjson);
+            }
+            free(str);
+        }
+    }
+    if ( allocptr != 0 )
+        free(allocptr);
+    return(0);
+}
+
 int32_t iguana_ROallocsize(struct iguana_info *virt)
 {
     return(virt->chain->zcash != 0 ? sizeof(struct iguana_zblock) : sizeof(struct iguana_block));
diff --git a/gecko/gecko_blocks.c b/gecko/gecko_blocks.c
index c3218d141..b7c5af432 100755
--- a/gecko/gecko_blocks.c
+++ b/gecko/gecko_blocks.c
@@ -169,7 +169,7 @@ char *gecko_blockarrived(struct supernet_info *myinfo,struct iguana_info *virt,c
             {
                 printf("gecko_blockarrived: duplicate.[%d] txid.%s\n",i,bits256_str(str,txid));
                 return(clonestr("{\"error\":\"gecko block duplicate txid\"}"));
-            }
+            } else printf("%s is new txid\n",bits256_str(str,txid));
         }
         txdata.zblock.RO.allocsize = iguana_ROallocsize(virt);
         if ( iguana_blockvalidate(virt,&valid,(struct iguana_block *)&txdata.zblock,1) < 0 )
@@ -213,20 +213,24 @@ char *gecko_blockarrived(struct supernet_info *myinfo,struct iguana_info *virt,c
                         }
                     }
                     prev = block;
-                    for (j=0; j<=i; j++)
+                    for (j=0; j<=i+1; j++)
                     {
-                        if ( (prev= iguana_blockfind("geckoprev",virt,prev->RO.prev_block)) == 0 )
-                            return(clonestr("{\"error\":\"gecko block mainchain link error\"}"));
                         if ( prev->protected == 0 || prev->height == (adjacent + 1 - j) )
                         {
-                            prev->mainchain = 1;
-                            prev->height = (adjacent + 1 - j);
+                            if ( prev->mainchain != 1 )
+                                prev->mainchain = 1;
+                            if ( prev->height != (adjacent + 1 - j) )
+                                prev->height = (adjacent + 1 - j);
+                            if ( prev->height == 0 )
+                                break;
                         }
                         else
                         {
                             printf("REJECT block: cant change height of protected block: ht.%d vs %d\n",adjacent + 1 - j, prev->height);
                             return(clonestr("{\"error\":\"gecko block cant override protected block's height\"}"));
                         }
+                        if ( (prev= iguana_blockfind("geckoprev",virt,prev->RO.prev_block)) == 0 )
+                            return(clonestr("{\"error\":\"gecko block mainchain link error\"}"));
                     }
                     txdata.zblock.height = block->height;
                     txdata.zblock.mainchain = block->mainchain = 1;
diff --git a/iguana/iguana_peers.c b/iguana/iguana_peers.c
index 4d979e6b8..f771f606b 100755
--- a/iguana/iguana_peers.c
+++ b/iguana/iguana_peers.c
@@ -463,7 +463,7 @@ int32_t iguana_send(struct iguana_info *coin,struct iguana_peer *addr,uint8_t *s
     remains = len;
     if ( strncmp(cmdstr+1,"uperNET",strlen("uperNET")) == 0 || strncmp(cmdstr+1,"uperNet",strlen("uperNet")) == 0  )
     {
-        printf(" >>>>>>> send.(%s) %d bytes to %s:%u supernet.%d\n",cmdstr,len,addr->ipaddr,addr->A.port,addr->supernet);
+        printf(" >>>>>>> send.(%s) crc.%x %d bytes to %s:%u supernet.%d\n",cmdstr,calc_crc32(0,serialized,len),len,addr->ipaddr,addr->A.port,addr->supernet);
     }
     else if ( addr->msgcounts.verack == 0 && (strcmp(cmdstr,"version") != 0 && strcmp(cmdstr,"ConnectTo") != 0 && strcmp(cmdstr,"verack") != 0) != 0 )
     {
diff --git a/iguana/main.c b/iguana/main.c
index ad1ada25f..5ddc63b5f 100755
--- a/iguana/main.c
+++ b/iguana/main.c
@@ -1150,7 +1150,7 @@ void iguana_appletests(struct supernet_info *myinfo)
             bitcoin_sharedsecret(myinfo->ctx,hash2,pubkey,33);
         printf("secp256k1 elapsed %.3f for %d iterations\n",OS_milliseconds() - startmillis,i);
        getchar();**/
-        if ( 1 && (str= SuperNET_JSON(myinfo,cJSON_Parse("{\"protover\":70002,\"RELAY\":0,\"VALIDATE\":0,\"portp2p\":14631,\"rpc\":14632,\"agent\":\"iguana\",\"method\":\"addcoin\",\"startpend\":64,\"endpend\":64,\"services\":129,\"maxpeers\":128,\"newcoin\":\"BTCD\",\"active\":1,\"numhelpers\":4,\"poll\":1}"),0,myinfo->rpcport)) != 0 )
+        if ( 1 && (str= SuperNET_JSON(myinfo,cJSON_Parse("{\"protover\":70002,\"RELAY\":1,\"VALIDATE\":0,\"portp2p\":14631,\"rpc\":14632,\"agent\":\"iguana\",\"method\":\"addcoin\",\"startpend\":64,\"endpend\":64,\"services\":129,\"maxpeers\":128,\"newcoin\":\"BTCD\",\"active\":1,\"numhelpers\":4,\"poll\":1}"),0,myinfo->rpcport)) != 0 )
         {
             free(str);
             if ( 0 && (str= SuperNET_JSON(myinfo,cJSON_Parse("{\"portp2p\":8333,\"RELAY\":0,\"VALIDATE\":0,\"agent\":\"iguana\",\"method\":\"addcoin\",\"startpend\":1,\"endpend\":1,\"services\":128,\"maxpeers\":64,\"newcoin\":\"BTC\",\"active\":0,\"numhelpers\":4,\"poll\":100}"),0,myinfo->rpcport)) != 0 )