diff --git a/src/komodo_bitcoind.h b/src/komodo_bitcoind.h
index 8a5bcfec1..9c615c329 100644
--- a/src/komodo_bitcoind.h
+++ b/src/komodo_bitcoind.h
@@ -594,6 +594,25 @@ int32_t komodo_blockload(CBlock& block,CBlockIndex *pindex)
     return(0);
 }
 
+CBlockIndex *komodo_chainactive(int32_t height)
+{
+    if ( chainActive.Tip() != 0 && height <= chainActive.Tip()->nHeight )
+    {
+        return(chainActive[height]);
+    } else return(0);
+}
+
+uint32_t komodo_heightstamp(int32_t height)
+{
+    CBlock block; CBlockIndex *ptr;
+    if ( (ptr= komodo_chainactive(height)) != 0 )
+    {
+        if ( komodo_blockload(block,ptr) == 0 && komodo_block2height(&block) == height )
+            return(block.nTime);
+    }
+    return(0);
+}
+
 void komodo_index2pubkey33(uint8_t *pubkey33,CBlockIndex *pindex,int32_t height)
 {
     CBlock block;
@@ -618,14 +637,6 @@ void komodo_connectpindex(CBlockIndex *pindex)
         komodo_connectblock(pindex,block);
 }
 
-CBlockIndex *komodo_chainactive(int32_t height)
-{
-    if ( chainActive.Tip() != 0 && height <= chainActive.Tip()->nHeight )
-    {
-        return(chainActive[height]);
-    } else return(0);
-}
-
 int32_t komodo_notaries(uint8_t pubkeys[64][33],int32_t height);
 int32_t komodo_electednotary(uint8_t *pubkey33,int32_t height);
 
diff --git a/src/main.cpp b/src/main.cpp
index 11af67f81..4c37892bd 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -708,6 +708,8 @@ bool IsStandardTx(const CTransaction& tx, string& reason)
     return true;
 }
 
+uint32_t komodo_heightstamp(int32_t height);
+
 int32_t komodo_validate_interest(uint32_t *expiredp,const CTransaction& tx,int32_t txheightarg)
 {
     int32_t i; uint32_t cmptime; uint64_t value=0; CBlockIndex *prev;
@@ -759,9 +761,13 @@ int32_t komodo_validate_interest(uint32_t *expiredp,const CTransaction& tx,int32
                 } else fprintf(stderr,"validateinterest grandfather.%d locktime %u vs txheighttime.%u tiptime.%u txb.%u cmp.%u\n",(int32_t)txheight,tx.nLockTime,txheighttime,tiptime,txblocktime,cmptime);
             }
         }*/
-        if ( (prev= komodo_chainactive(txheightarg-1)) != 0 )
-            cmptime = prev->nTime + 600;
-        else fprintf(stderr,"couldnt get prev.[%d]\n",txheightarg-1);
+        if ( (cmptime= komodo_heightstamp(txheightarg-1)) == 0 )
+        {
+            cmptime = chainActive.Tip()->nTime;
+            fprintf(stderr,"couldnt get prev.[%d] use tiptime.%u\n",txheightarg-1,cmptime);
+        }
+        //if ( (prev= komodo_chainactive(txheightarg-1)) != 0 )
+        //    cmptime = prev->nTime + 600;
         if ( cmptime > 0 && txheightarg > 246748 )
         {
             if ( txheightarg < 247205 )