diff --git a/onionr/core.py b/onionr/core.py
index 017b4313..84863b40 100644
--- a/onionr/core.py
+++ b/onionr/core.py
@@ -48,6 +48,7 @@ class Core:
             self.queueDB = self.dataDir + 'queue.db'
             self.peerDB = self.dataDir + 'peers.db'
             self.blockDB = self.dataDir + 'blocks.db'
+            self.blockDataDB = self.dataDir + 'block-data.db'
             self.blockDataLocation = self.dataDir + 'blocks/'
             self.addressDB = self.dataDir + 'address.db'
             self.hsAddress = ''
diff --git a/onionr/dbcreator.py b/onionr/dbcreator.py
index f2f12f07..cde4fd83 100644
--- a/onionr/dbcreator.py
+++ b/onionr/dbcreator.py
@@ -96,7 +96,7 @@ class DBCreator:
         conn = sqlite3.connect(self.core.blockDB)
         c = conn.cursor()
         c.execute('''CREATE TABLE hashes(
-            hash text not null,
+            hash text distinct not null,
             dateReceived int,
             decrypted int,
             dataType text,
@@ -111,6 +111,19 @@ class DBCreator:
         conn.commit()
         conn.close()
         return
+    
+    def createBlockDataDB(self):
+        if os.path.exists(self.core.blockDataDB):
+            raise Exception("Block data database already exists")
+        conn = sqlite3.connect(self.core.blockDataDB)
+        c = conn.cursor()
+        c.execute('''CREATE TABLE blockData(
+            hash text distinct not null,
+            data blob not null
+            );
+        ''')
+        conn.commit()
+        conn.close()
 
     def createForwardKeyDB(self):
         '''
diff --git a/onionr/onionrutils.py b/onionr/onionrutils.py
index 948563e3..7f5606ba 100644
--- a/onionr/onionrutils.py
+++ b/onionr/onionrutils.py
@@ -362,6 +362,7 @@ class OnionrUtils:
         '''Validate metadata meets onionr spec (does not validate proof value computation), take in either dictionary or json string'''
         # TODO, make this check sane sizes
         retData = False
+        maxClockDifference = 60
 
         # convert to dict if it is json string
         if type(metadata) is str:
@@ -390,13 +391,14 @@ class OnionrUtils:
                         break
                 if i == 'time':
                     if not self.isIntegerString(metadata[i]):
-                        logger.warn('Block metadata time stamp is not integer string')
+                        logger.warn('Block metadata time stamp is not integer string or int')
                         break
-                    if (metadata[i] - self.getEpoch()) > 30:
-                        logger.warn('Block metadata time stamp is set for the future, which is not allowed.')
+                    isFuture = (metadata[i] - self.getEpoch())
+                    if isFuture > maxClockDifference:
+                        logger.warn('Block timestamp is skewed to the future over the max %s: %s' (maxClockDifference, isFuture))
                         break
                     if (self.getEpoch() - metadata[i]) > maxAge:
-                        logger.warn('Block is older than allowed: %s' % (maxAge,))
+                        logger.warn('Block is outdated: %s' % (metadata[i],))
                 elif i == 'expire':
                     try:
                         assert int(metadata[i]) > self.getEpoch()
@@ -440,7 +442,7 @@ class OnionrUtils:
         return retVal
 
     def isIntegerString(self, data):
-        '''Check if a string is a valid base10 integer'''
+        '''Check if a string is a valid base10 integer (also returns true if already an int)'''
         try:
             int(data)
         except ValueError: