diff --git a/biljeznica.ipynb b/biljeznica.ipynb
index 72753ab..e5ead8d 100644
--- a/biljeznica.ipynb
+++ b/biljeznica.ipynb
@@ -24,20 +24,9 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": null,
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "<matplotlib.image.AxesImage at 0x7f868a2a2668>"
-      ]
-     },
-     "execution_count": 1,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "import matplotlib.pyplot as plt\n",
     "figa, axa = plt.subplots()\n",
@@ -76,7 +65,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 17,
+   "execution_count": 27,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -94,7 +83,7 @@
     "                str(self.transactions) + str(self.previousHash)).encode('utf-8')\n",
     "        self.hash = self.hashMyBlock().hexdigest()\n",
     "\n",
-    "    def hashMyBlock(self):\n",
+    "    def hashBlock(self):\n",
     "        sha = hashlib.sha256()\n",
     "        sha.update(self.encoded)\n",
     "        return sha"
@@ -105,6 +94,92 @@
    "execution_count": 26,
    "metadata": {},
    "outputs": [],
+   "source": [
+    "class Transaction:\n",
+    "    \n",
+    "    def __init__(self, sender, reciever, amount):\n",
+    "        \n",
+    "        self.sender = sender\n",
+    "        self.reciever = reciever\n",
+    "        self.amount = amount\n",
+    "        self.encoded = (str(self.sender) + str(self.reciever) + \n",
+    "                str(self.amount) ).encode('utf-8')\n",
+    "        self.hash = self.hashMyTransaction().hexdigest()\n",
+    "        \n",
+    "        \n",
+    "    def hashTransaction(self):\n",
+    "        \n",
+    "        sha = hashlib.sha256()\n",
+    "        sha.update(self.encoded)\n",
+    "        return sha"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 25,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "class Mempool:\n",
+    "    \n",
+    "    def __init__(self):\n",
+    "        \n",
+    "        self.transactions=[]\n",
+    "        \n",
+    "    def addNewTransaction(self,transaction):\n",
+    "        \n",
+    "        self.transactions.append(transaction)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 30,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "class Node:\n",
+    "    \n",
+    "    def __init__(self, name):\n",
+    "    \n",
+    "        self.name = name\n",
+    "        self.balance = 0\n",
+    "        self.priKey = self.hashNode(self.name.encode('utf-8')).hexdigest()\n",
+    "        self.priKey = self.hashNode().hexdigest()\n",
+    "        \n",
+    "    def hashNode(self, stringToHash):\n",
+    "        \n",
+    "        sha = hashlib.sha256()\n",
+    "        sha.update(stringToHash)\n",
+    "        return sha"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 16,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "'c4b9a2dc06df9ad095ab06d4d131ece0500d3a7bf66e654a2c728931b4aed1c0'"
+      ]
+     },
+     "execution_count": 16,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "\n",
+    "trans= Transaction(\"a\",\"b\",10)\n",
+    "trans.hash"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {},
+   "outputs": [],
    "source": [
     "import datetime as date\n",
     "\n",
@@ -115,7 +190,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 46,
+   "execution_count": 7,
    "metadata": {
     "scrolled": false
    },
@@ -123,16 +198,17 @@
     {
      "data": {
       "text/plain": [
-       "'a00cdb33d1a6f850488f9b37178b17a9fdaa7bb71dff3a318b76a6a430eb96b6'"
+       "'6afcaadbc31039de6f6d1d7a90be15cd2ac2d063ef3d1129a915726e11f466dc'"
       ]
      },
-     "execution_count": 46,
+     "execution_count": 7,
      "metadata": {},
      "output_type": "execute_result"
     }
    ],
    "source": [
     "genesisBlock = Block(0, getMeTime(),\"\",[\"First block\"])\n",
+    "genesisBlock.hashMe()\n",
     "genesisBlock.hash"
    ]
   },
@@ -145,16 +221,16 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 47,
+   "execution_count": 8,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "text/plain": [
-       "'a00cdb33d1a6f850488f9b37178b17a9fdaa7bb71dff3a318b76a6a430eb96b6'"
+       "''"
       ]
      },
-     "execution_count": 47,
+     "execution_count": 8,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -167,7 +243,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 57,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -186,7 +262,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 79,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -200,27 +276,16 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 80,
+   "execution_count": null,
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "['First block']"
-      ]
-     },
-     "execution_count": 80,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "genesisBlock.transactions"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 81,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -240,76 +305,31 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 82,
+   "execution_count": null,
    "metadata": {
     "scrolled": true
    },
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "============================== 0 ==============================\n",
-      "a00cdb33d1a6f850488f9b37178b17a9fdaa7bb71dff3a318b76a6a430eb96b6\n",
-      "===============================================================\n",
-      "First block\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "printBlock(genesisBlock)"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 83,
+   "execution_count": null,
    "metadata": {
     "scrolled": true
    },
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "============================== 1 ==============================\n",
-      "4cfab635f6c02b97274af250c512ebae051425197955f816417b00e3cf0d76bf\n",
-      "===============================================================\n",
-      "Alice Bob 50\n",
-      "Bob John 10\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "printBlock(secondBlock)"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 84,
+   "execution_count": null,
    "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "============================== 0 ==============================\n",
-      "a00cdb33d1a6f850488f9b37178b17a9fdaa7bb71dff3a318b76a6a430eb96b6\n",
-      "===============================================================\n",
-      "First block\n",
-      "============================== 1 ==============================\n",
-      "4cfab635f6c02b97274af250c512ebae051425197955f816417b00e3cf0d76bf\n",
-      "===============================================================\n",
-      "Alice Bob 50\n",
-      "Bob John 10\n",
-      "============================== 2 ==============================\n",
-      "f64194505b2fb4216b5fbc548a97438b208c98968826d5e48665107140caea84\n",
-      "===============================================================\n",
-      "Bob Alice 20\n",
-      "John Mary 5\n",
-      "Alice Mary 20\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "blockchain = Blockchain(genesisBlock)\n",
     "blockchain.addNewBlock(secondBlock)\n",
@@ -360,12 +380,93 @@
     "import matplotlib.pyplot as plt"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "scrolled": true
+   },
+   "outputs": [],
+   "source": [
+    "test?\n"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "import numpy\n",
+    "t=numpy.array(test.Date.values)\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "df = pd.test(data=)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "t=list(test.Date.values)\n",
+    "t"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "scrolled": true
+   },
+   "outputs": [],
+   "source": [
+    "import matplotlib.dates as dates\n",
+    "datesNew = dates.date2num(t)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "dates.date2num?"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import numpy as np"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "numpy.datetime64?"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "plt.plot(np.linspace(2,200,1),test.Open.values[-200:])"
+   ]
   },
   {
    "cell_type": "code",