diff --git a/lib/bcoin/http/server.js b/lib/bcoin/http/server.js
index 529ace10..b4578070 100644
--- a/lib/bcoin/http/server.js
+++ b/lib/bcoin/http/server.js
@@ -239,7 +239,12 @@ HTTPServer.prototype._init = function _init() {
       if (!tx)
         return send(404);
 
-      send(200, tx.toJSON());
+      self.node.fillHistory(tx, function(err) {
+        if (err)
+          return next(err);
+
+        send(200, tx.toJSON());
+      });
     });
   });
 
@@ -252,9 +257,16 @@ HTTPServer.prototype._init = function _init() {
       if (!txs.length)
         return send(404);
 
-      send(200, txs.map(function(tx) {
-        return tx.toJSON();
-      }));
+      utils.forEach(txs, function(tx, next) {
+        self.node.fillHistory(tx, next);
+      }, function(err) {
+        if (err)
+          return next(err);
+
+        send(200, txs.map(function(tx) {
+          return tx.toJSON();
+        }));
+      });
     });
   });
 
@@ -267,9 +279,16 @@ HTTPServer.prototype._init = function _init() {
       if (!txs.length)
         return send(404);
 
-      send(200, txs.map(function(tx) {
-        return tx.toJSON();
-      }));
+      utils.forEach(txs, function(tx, next) {
+        self.node.fillHistory(tx, next);
+      }, function(err) {
+        if (err)
+          return next(err);
+
+        send(200, txs.map(function(tx) {
+          return tx.toJSON();
+        }));
+      });
     });
   });
 
@@ -463,9 +482,16 @@ HTTPServer.prototype._init = function _init() {
       if (!txs.length)
         return send(404);
 
-      send(200, txs.map(function(tx) {
-        return tx.toJSON();
-      }));
+      utils.forEach(txs, function(tx, next) {
+        self.walletdb.fillHistory(tx, next);
+      }, function(err) {
+        if (err)
+          return next(err);
+
+        send(200, txs.map(function(tx) {
+          return tx.toJSON();
+        }));
+      });
     });
   });
 
@@ -478,9 +504,16 @@ HTTPServer.prototype._init = function _init() {
       if (!txs.length)
         return send(404);
 
-      send(200, txs.map(function(tx) {
-        return tx.toJSON();
-      }));
+      utils.forEach(txs, function(tx, next) {
+        self.walletdb.fillHistory(tx, next);
+      }, function(err) {
+        if (err)
+          return next(err);
+
+        send(200, txs.map(function(tx) {
+          return tx.toJSON();
+        }));
+      });
     });
   });
 
@@ -493,9 +526,16 @@ HTTPServer.prototype._init = function _init() {
       if (!txs.length)
         return send(404);
 
-      send(200, txs.map(function(tx) {
-        return tx.toJSON();
-      }));
+      utils.forEach(txs, function(tx, next) {
+        self.walletdb.fillHistory(tx, next);
+      }, function(err) {
+        if (err)
+          return next(err);
+
+        send(200, txs.map(function(tx) {
+          return tx.toJSON();
+        }));
+      });
     });
   });
 
@@ -510,9 +550,16 @@ HTTPServer.prototype._init = function _init() {
       if (!txs.length)
         return send(404);
 
-      send(200, txs.map(function(tx) {
-        return tx.toJSON();
-      }));
+      utils.forEach(txs, function(tx, next) {
+        self.walletdb.fillHistory(tx, next);
+      }, function(err) {
+        if (err)
+          return next(err);
+
+        send(200, txs.map(function(tx) {
+          return tx.toJSON();
+        }));
+      });
     });
   });
 
@@ -525,7 +572,11 @@ HTTPServer.prototype._init = function _init() {
       if (!tx)
         return send(404);
 
-      send(200, tx.toJSON());
+      self.walletdb.fillHistory(tx, function(err) {
+        if (err)
+          return next(err);
+        send(200, tx.toJSON());
+      });
     });
   });
 
@@ -545,14 +596,21 @@ HTTPServer.prototype._init = function _init() {
   this.get('/mempool', function(req, res, next, send) {
     self.node.mempool.getHistory(function(err, txs) {
       if (err)
-        return callback(err);
+        return next(err);
 
       if (!txs.length)
         return send(404);
 
-      send(200, txs.map(function(tx) {
-        return tx.toJSON();
-      }));
+      utils.forEach(txs, function(tx, next) {
+        self.node.fillHistory(tx, next);
+      }, function(err) {
+        if (err)
+          return next(err);
+
+        send(200, txs.map(function(tx) {
+          return tx.toJSON();
+        }));
+      });
     });
   });
 
diff --git a/lib/bcoin/protocol/constants.js b/lib/bcoin/protocol/constants.js
index 73ba1d41..7f3c47c5 100644
--- a/lib/bcoin/protocol/constants.js
+++ b/lib/bcoin/protocol/constants.js
@@ -558,7 +558,7 @@ exports.sequence = {
  */
 
 exports.ONE_HASH = new Buffer(
-  '0000000000000000000000000000000000000000000000000000000000000001',
+  '0100000000000000000000000000000000000000000000000000000000000000',
   'hex'
 );