diff --git a/lib/coins/aeon.js b/lib/coins/aeon.js
index c68082dc..462ccd59 100644
--- a/lib/coins/aeon.js
+++ b/lib/coins/aeon.js
@@ -7,6 +7,11 @@ const debug = require('debug')('coinFuncs');
 
 let hexChars = new RegExp("[0-9a-f]+");
 
+function handleRpcError(err, body, callback) {
+    console.error(JSON.stringify(body));
+    callback(new Error(`${err} RPC: ${JSON.stringify(body)}`))
+}
+
 function Coin(data){
     this.bestExchange = global.config.payout.bestExchange;
     this.data = data;
@@ -28,37 +33,28 @@ function Coin(data){
 
     this.niceHashDiff = 400000;
 
-    this.getBlockHeaderByID = function(blockId, callback){
-        global.support.rpcDaemon('getblockheaderbyheight', {"height": blockId}, function (body) {
-            if (body.hasOwnProperty('result')){
-                return callback(null, body.result.block_header);
-            } else {
-                console.error(JSON.stringify(body));
-                return callback(true, body);
-            }
-        });
+    this.getBlockHeaderByHeight = (height, callback) => { // unused
+        global.support.rpcDaemon('getblockheaderbyheight', { height }, (body) => 
+            (body && body.result && body.result.status === 'OK' && body.result.block_header)
+            ? callback(null, body.result.block_header)
+            : handleRpcError(`RPC 'getblockheaderbyheight' to aeon daemon failed to return the block header.`, body, callback)
+        );
     };
 
-    this.getBlockHeaderByHash = function(blockHash, callback){
-        global.support.rpcDaemon('getblockheaderbyhash', {"hash": blockHash}, function (body) {
-            if (typeof(body) !== 'undefined' && body.hasOwnProperty('result')){
-                return callback(null, body.result.block_header);
-            } else {
-                console.error(JSON.stringify(body));
-                return callback(true, body);
-            }
-        });
+    this.getBlockHeaderByHash = (hash, callback) => {
+        global.support.rpcDaemon('getblockheaderbyhash', { hash }, (body) => 
+            (body && body.result && body.result.status === 'OK' && body.result.block_header)
+            ? callback(null, body.result.block_header)
+            : handleRpcError(`RPC 'getblockheaderbyhash' to aeon daemon failed to return the block header.`, body, callback)
+        );
     };
 
-    this.getLastBlockHeader = function(callback){
-        global.support.rpcDaemon('getlastblockheader', [], function (body) {
-            if (typeof(body) !== 'undefined' && body.hasOwnProperty('result')){
-                return callback(null, body.result.block_header);
-            } else {
-                console.error(JSON.stringify(body));
-                return callback(true, body);
-            }
-        });
+    this.getLastBlockHeader = (callback) => {
+        global.support.rpcDaemon('getlastblockheader', {}, (body) => 
+            (body && body.result && body.result.status === 'OK' && body.result.block_header)
+            ? callback(null, body.result.block_header)
+            : handleRpcError(`RPC 'getlastblockheader' to aeon daemon failed to return the block header.`, body, callback)
+        );
     };
 
     this.getBlockTemplate = function(walletAddress, callback){
diff --git a/lib/coins/krb.js b/lib/coins/krb.js
index 1494da8f..868bd898 100644
--- a/lib/coins/krb.js
+++ b/lib/coins/krb.js
@@ -7,6 +7,11 @@ const debug = require('debug')('coinFuncs');
 
 let hexChars = new RegExp("[0-9a-f]+");
 
+function handleRpcError(err, body, callback) {
+    console.error(JSON.stringify(body));
+    callback(new Error(`${err} RPC: ${JSON.stringify(body)}`))
+}
+
 function Coin(data){
     this.bestExchange = global.config.payout.bestExchange;
     this.data = data;
@@ -28,37 +33,28 @@ function Coin(data){
 
     this.niceHashDiff = 200000;
 
-    this.getBlockHeaderByID = function(blockId, callback){
-        global.support.rpcDaemon('getblockheaderbyheight', {"height": blockId}, function (body) {
-            if (body.hasOwnProperty('result')){
-                return callback(null, body.result.block_header);
-            } else {
-                console.error(JSON.stringify(body));
-                return callback(true, body);
-            }
-        });
+    this.getBlockHeaderByHeight = (height, callback) => { // unused
+        global.support.rpcDaemon('getblockheaderbyheight', { height }, (body) => 
+            (body && body.result && body.result.status === 'OK' && body.result.block_header)
+            ? callback(null, body.result.block_header)
+            : handleRpcError(`RPC 'getblockheaderbyheight' to krb daemon failed to return the block header.`, body, callback)
+        );
     };
 
-    this.getBlockHeaderByHash = function(blockHash, callback){
-        global.support.rpcDaemon('getblockheaderbyhash', {"hash": blockHash}, function (body) {
-            if (typeof(body) !== 'undefined' && body.hasOwnProperty('result')){
-                return callback(null, body.result.block_header);
-            } else {
-                console.error(JSON.stringify(body));
-                return callback(true, body);
-            }
-        });
+    this.getBlockHeaderByHash = (hash, callback) => {
+        global.support.rpcDaemon('getblockheaderbyhash', { hash }, (body) => 
+            (body && body.result && body.result.status === 'OK' && body.result.block_header)
+            ? callback(null, body.result.block_header)
+            : handleRpcError(`RPC 'getblockheaderbyhash' to krb daemon failed to return the block header.`, body, callback)
+        );
     };
 
-    this.getLastBlockHeader = function(callback){
-        global.support.rpcDaemon('getlastblockheader', [], function (body) {
-            if (typeof(body) !== 'undefined' && body.hasOwnProperty('result')){
-                return callback(null, body.result.block_header);
-            } else {
-                console.error(JSON.stringify(body));
-                return callback(true, body);
-            }
-        });
+    this.getLastBlockHeader = (callback) => {
+        global.support.rpcDaemon('getlastblockheader', {}, (body) => 
+            (body && body.result && body.result.status === 'OK' && body.result.block_header)
+            ? callback(null, body.result.block_header)
+            : handleRpcError(`RPC 'getlastblockheader' to krb daemon failed to return the block header.`, body, callback)
+        );
     };
 
     this.getBlockTemplate = function(walletAddress, callback){
diff --git a/lib/coins/xmr.js b/lib/coins/xmr.js
index a4521110..07a8086f 100644
--- a/lib/coins/xmr.js
+++ b/lib/coins/xmr.js
@@ -7,6 +7,11 @@ const debug = require('debug')('coinFuncs');
 
 let hexChars = new RegExp("[0-9a-f]+");
 
+function handleRpcError(err, body, callback) {
+    console.error(JSON.stringify(body));
+    callback(new Error(`${err} RPC: ${JSON.stringify(body)}`))
+}
+
 function Coin(data){
     this.bestExchange = global.config.payout.bestExchange;
     this.data = data;
@@ -42,37 +47,28 @@ function Coin(data){
 
     this.niceHashDiff = 400000;
 
-    this.getBlockHeaderByID = function(blockId, callback){
-        global.support.rpcDaemon('getblockheaderbyheight', {"height": blockId}, function (body) {
-            if (body.hasOwnProperty('result')){
-                return callback(null, body.result.block_header);
-            } else {
-                console.error(JSON.stringify(body));
-                return callback(true, body);
-            }
-        });
+    this.getBlockHeaderByHeight = (height, callback) => { // unused
+        global.support.rpcDaemon('getblockheaderbyheight', { height }, (body) => 
+            (body && body.result && body.result.status === 'OK' && body.result.block_header)
+            ? callback(null, body.result.block_header)
+            : handleRpcError(`RPC 'getblockheaderbyheight' to monero daemon failed to return the block header.`, body, callback)
+        );
     };
 
-    this.getBlockHeaderByHash = function(blockHash, callback){
-        global.support.rpcDaemon('getblockheaderbyhash', {"hash": blockHash}, function (body) {
-            if (typeof(body) !== 'undefined' && body.hasOwnProperty('result')){
-                return callback(null, body.result.block_header);
-            } else {
-                console.error(JSON.stringify(body));
-                return callback(true, body);
-            }
-        });
+    this.getBlockHeaderByHash = (hash, callback) => {
+        global.support.rpcDaemon('getblockheaderbyhash', { hash }, (body) => 
+            (body && body.result && body.result.status === 'OK' && body.result.block_header)
+            ? callback(null, body.result.block_header)
+            : handleRpcError(`RPC 'getblockheaderbyhash' to monero daemon failed to return the block header.`, body, callback)
+        );
     };
 
-    this.getLastBlockHeader = function(callback){
-        global.support.rpcDaemon('getlastblockheader', [], function (body) {
-            if (typeof(body) !== 'undefined' && body.hasOwnProperty('result')){
-                return callback(null, body.result.block_header);
-            } else {
-                console.error(JSON.stringify(body));
-                return callback(true, body);
-            }
-        });
+    this.getLastBlockHeader = (callback) => {
+        global.support.rpcDaemon('getlastblockheader', {}, (body) => 
+            (body && body.result && body.result.status === 'OK' && body.result.block_header)
+            ? callback(null, body.result.block_header)
+            : handleRpcError(`RPC 'getlastblockheader' to monero daemon failed to return the block header.`, body, callback)
+        );
     };
 
     this.getBlockTemplate = function(walletAddress, callback){