calculate pin list checksums in a worker

lib/hk-util.js

@@ -951,7 +951,7 @@ HK.initializeValidationWorkers = function (Env) {
         worker.on('message', function (res) {
             if (!res || !res.txid) { return; }
             //console.log(+new Date(), "Received verification response");
-            response.handle(res.txid, [res.error]);
+            response.handle(res.txid, [res.error, res.value]);
         });
         // Spawn a new process in one ends
         worker.on('exit', function () {
@@ -1001,6 +1001,13 @@ HK.initializeValidationWorkers = function (Env) {
             key: publicKey,
         }, cb);
     };
+
+    Env.hashChannelList = function (channels, cb) {
+        send({
+            command: 'HASH_CHANNEL_LIST',
+            channels: channels,
+        }, cb);
+    };
 };
 
 /*  onChannelMessage