diff --git a/coins/einsteinium.json b/coins/einsteinium.json
new file mode 100644
index 0000000..d2575ef
--- /dev/null
+++ b/coins/einsteinium.json
@@ -0,0 +1,5 @@
+{
+    "name": "Einsteinium",
+    "symbol": "EMC2",
+    "algorithm": "scrypt"
+}
diff --git a/coins/feathercoin.json b/coins/feathercoin.json
new file mode 100644
index 0000000..26959d8
--- /dev/null
+++ b/coins/feathercoin.json
@@ -0,0 +1,5 @@
+{
+    "name": "Feathercoin",
+    "symbol": "FTC",
+    "algorithm": "scrypt"
+}
diff --git a/coins/groestlcoin.json b/coins/groestlcoin.json
new file mode 100644
index 0000000..50feee4
--- /dev/null
+++ b/coins/groestlcoin.json
@@ -0,0 +1,5 @@
+{
+    "name": "GroestlCoin",
+    "symbol": "GRS",
+    "algorithm": "groestl"
+}
diff --git a/coins/hirocoin.json b/coins/hirocoin.json
index cd7da82..3adec2c 100644
--- a/coins/hirocoin.json
+++ b/coins/hirocoin.json
@@ -1,6 +1,6 @@
 {
     "name": "Hirocoin",
-    "symbol": "hic",
+    "symbol": "HIRO",
     "algorithm": "x11",
     "mposDiffMultiplier": 256
 }
diff --git a/coins/myriadcoin.json b/coins/myriadcoin.json
new file mode 100644
index 0000000..bd0f0ee
--- /dev/null
+++ b/coins/myriadcoin.json
@@ -0,0 +1,5 @@
+{
+    "name": "Myriadcoin",
+    "symbol": "MYR",
+    "algorithm": "scrypt"    
+}
\ No newline at end of file