diff --git a/README.md b/README.md
index c9fb9e847cf9bb82e7f4e30199e2712f3806d3fb..4ad8eaf206d0f49c9158f1b12be73a7883af96c9 100644
--- a/README.md
+++ b/README.md
@@ -14,13 +14,11 @@ pip install -r requirements.txt
 ```
 - Crear un link simbólico al archivo local_settings.py desde el local settings del entorno en que se encuentre el proyecto
 - Ejecutar:
-    - sudo apt-get install libssl-dev build-essential automake pkg-config libtool libffi-dev libgmp-dev libyaml-cpp-dev memcached
+    - sudo apt-get install libssl-dev build-essential automake pkg-config libtool libffi-dev libgmp-dev libyaml-cpp-dev
     - git clone https://github.com/ethereum/pyethereum/
     - cd pyethereum
     - python setup.py install
     
-- Poner en crontab el sig comando reemplazando donde corresponde los directorios
-    /directorio/del/venv/bin/python /directorio/de/aplicacion/manage.py desatascar_pendientes > /dev/null
 ### Utilización
 - Stamp
     - Método: POST   
diff --git a/TsaApi/local_settings_dev.py b/TsaApi/local_settings_dev.py
index 100544d0e0b7bef45206694815634b4fdab1a831..5accc7edc2cd6eaf03908889ac3acb8994123994 100644
--- a/TsaApi/local_settings_dev.py
+++ b/TsaApi/local_settings_dev.py
@@ -7,9 +7,7 @@ This program is distributed in the hope that it will be useful, but WITHOUT ANY
 
 You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/
 """
-APP_ROOT = '/opt/project/'
-
-LOG_ROOT = APP_ROOT + 'logs/'
+APP_ROOT = '/home/python/TsaAPI/'
 
 STATIC_ROOT = APP_ROOT + 'html/'
 
@@ -17,23 +15,11 @@ ACCOUNT_ADDRESS = '0x25c185dcaed065bac30a0a1cd0688a7aa02896d7'
 
 HOST_ADDRESS = 'http://10.23.10.72:8501'
 
-# Contracts info
+#Contracts info
 CONTRACTS = {
-    '01': {
+    '01':{
         'address': '0x88933138A9Ef6474ee4f255A6395210F4f014d6B',
-        'abi': [{"constant": True, "inputs": [{"name": "ots", "type": "string"}], "name": "getHash",
-                 "outputs": [{"name": "", "type": "string"}], "payable": False, "stateMutability": "view",
-                 "type": "function"},
-                {"constant": True, "inputs": [{"name": "ots", "type": "string"}], "name": "getBlockNumber",
-                 "outputs": [{"name": "", "type": "uint256"}], "payable": False, "stateMutability": "view",
-                 "type": "function"}, {"constant": True, "inputs": [{"name": "ots", "type": "string"},
-                                                                    {"name": "file_hash", "type": "string"}],
-                                       "name": "verify", "outputs": [{"name": "", "type": "bool"}], "payable": False,
-                                       "stateMutability": "view", "type": "function"}, {"constant": False, "inputs": [
-                {"name": "ots", "type": "string"}, {"name": "file_hash", "type": "string"}], "name": "stamp",
-                                                                                        "outputs": [], "payable": False,
-                                                                                        "stateMutability": "nonpayable",
-                                                                                        "type": "function"}],
+        'abi': [{"constant":True,"inputs":[{"name":"ots","type":"string"}],"name":"getHash","outputs":[{"name":"","type":"string"}],"payable":False,"stateMutability":"view","type":"function"},{"constant":True,"inputs":[{"name":"ots","type":"string"}],"name":"getBlockNumber","outputs":[{"name":"","type":"uint256"}],"payable":False,"stateMutability":"view","type":"function"},{"constant":True,"inputs":[{"name":"ots","type":"string"},{"name":"file_hash","type":"string"}],"name":"verify","outputs":[{"name":"","type":"bool"}],"payable":False,"stateMutability":"view","type":"function"},{"constant":False,"inputs":[{"name":"ots","type":"string"},{"name":"file_hash","type":"string"}],"name":"stamp","outputs":[],"payable":False,"stateMutability":"nonpayable","type":"function"}],
     },
 }
 
@@ -47,21 +33,4 @@ PERMANENT_OTS_PREFIX = '1x'
 GAS = 250000
 GAS_PRICE = 1
 
-SENTRY_URL = 'http://2ec54beaab3b4459a1e5afadea070f98:92aee3f5d91e4e66996a3e0792985541@172.17.30.21:9000/54'
-
-MEMCACHED_HOST = '172.17.0.1'
-MEMCACHED_PORT = 11211  # TIENE QUE SER INT
-
-PENDING_TXS_MEMCACHED_KEY = 'pending_txs'
-
-TEST_MEMCACHED_HOST = MEMCACHED_HOST
-TEST_MEMCACHED_PORT = MEMCACHED_PORT
-
-TEST_PENDING_TXS_MEMCACHED_KEY = 'test_pending_txs'
-
-ELASTIC_APM = {
-    'SERVICE_NAME': 'TsaApi-dev',
-    'SERVER_URL': 'http://10.1.100.67:8200',
-    'DEBUG': True,
-}
-
+SENTRY_URL = 'http://2ec54beaab3b4459a1e5afadea070f98:92aee3f5d91e4e66996a3e0792985541@172.17.30.21:9000/54'
\ No newline at end of file
diff --git a/TsaApi/local_settings_preprod.py b/TsaApi/local_settings_preprod.py
index 5f3a1dc4c0c0ed53022b7263a17c4dbc4398b444..3e45e9f9be26a7e32e66285e5306c94df4be4ccb 100644
--- a/TsaApi/local_settings_preprod.py
+++ b/TsaApi/local_settings_preprod.py
@@ -8,7 +8,6 @@ This program is distributed in the hope that it will be useful, but WITHOUT ANY
 You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/
 """
 APP_ROOT = '/var/www/tsaapi.pp.bfa.local/'
-LOG_ROOT = APP_ROOT + 'logs/'
 STATIC_ROOT = APP_ROOT + 'html/'
 STATIC_URL = '/tsa/static/'
 
@@ -33,10 +32,4 @@ PERMANENT_OTS_PREFIX = '1x'
 GAS = 250000
 GAS_PRICE = 1
 
-SENTRY_URL = 'http://aa30f3ecd3bb4923a7046f197da61e07:47cd9f9ea1e243f6a9f47e2aa40b85c3@10.1.100.118:9000/82'
-
-ELASTIC_APM = {
-    'SERVICE_NAME': 'TsaApi-pp',
-    'SERVER_URL': 'http://10.20.99.87:8200',
-    'DEBUG': True,
-}
+SENTRY_URL = 'http://aa30f3ecd3bb4923a7046f197da61e07:47cd9f9ea1e243f6a9f47e2aa40b85c3@10.1.100.118:9000/82'
\ No newline at end of file
diff --git a/TsaApi/local_settings_prod.py b/TsaApi/local_settings_prod.py
index dbdd5cee9e8dee3cb6d1375aad1616e91e9d0af1..9d51a160ba5d96d9d00dc00fe70360b1c33281bf 100644
--- a/TsaApi/local_settings_prod.py
+++ b/TsaApi/local_settings_prod.py
@@ -41,10 +41,4 @@ PERMANENT_OTS_PREFIX = '1x'
 GAS = 250000
 GAS_PRICE = 100000000
 
-SENTRY_URL = 'http://36f4f241a007447d8a4441a13055b110:136cb6d1af854b869d13610603fa7321@10.1.100.118:9000/84'
-
-ELASTIC_APM = {
-    'SERVICE_NAME': 'TsaApi',
-    'SERVER_URL': 'http://10.20.99.87:8200',
-    'DEBUG': False,
-}
+SENTRY_URL = 'http://36f4f241a007447d8a4441a13055b110:136cb6d1af854b869d13610603fa7321@10.1.100.118:9000/84'
\ No newline at end of file
diff --git a/app/utils.py b/app/utils.py
index d3fa00b4a3437e6d46acada06ef032f7893f04aa..d7e2b233fa5822086b7ef5574305ce7e5f273a48 100644
--- a/app/utils.py
+++ b/app/utils.py
@@ -7,7 +7,6 @@ This program is distributed in the hope that it will be useful, but WITHOUT ANY
 
 You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/
 """
-import base64
 import datetime
 import hashlib
 import time
@@ -15,7 +14,7 @@ import math
 from TsaApi.settings import ACCOUNT_ADDRESS, CURRENT_CONTRACT_VERSION, PERMANENT_OTS_PREFIX, TEMPORARY_OTS_PREFIX
 
 
-class Utils:
+class Utils():
     @staticmethod
     def sha256_encode(string):
         return hashlib.sha256(string.encode('utf-8')).hexdigest()
@@ -26,10 +25,8 @@ class Utils:
 
     @staticmethod
     def get_ots_hash(file_hash):
-        # El ots se genera con los hashes sha256 de (archivo original+timestamp+dirección de la cuenta) + versión del
-        #  contrato
-        return Utils.sha256_encode(str(file_hash + Utils.sha256_encode(str(int(time.time()))) + Utils.sha256_encode(
-            ACCOUNT_ADDRESS))) + CURRENT_CONTRACT_VERSION
+        #El ots se genera con los hashes sha256 de (archivo original+timestamp+dirección de la cuenta) + versión del contrato
+        return Utils.sha256_encode(str(file_hash + Utils.sha256_encode(str(int(time.time()))) + Utils.sha256_encode(ACCOUNT_ADDRESS))) + CURRENT_CONTRACT_VERSION
 
     @staticmethod
     def decode_contract_call(contract_abi, call_data):
@@ -59,9 +56,4 @@ class Utils:
 
     @staticmethod
     def get_temporary_ots(ots_hash, tx_hash):
-        return TEMPORARY_OTS_PREFIX + '-' + ots_hash + '-' + tx_hash
-
-
-class Base64EncodingService:
-    def encode(self, stuff):
-        return base64.b64encode(stuff)
\ No newline at end of file
+        return TEMPORARY_OTS_PREFIX + '-' + ots_hash + '-' + tx_hash
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index e7e919e6c5f1ea1ae27a23d4c7d124c58f98abfe..409c0b57d2b1ac957849526b39094948017a1d09 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,10 +1,9 @@
-ipython==7.2.0
-ipython-genutils==0.2.0
-pymemcache==2.1.1
-elastic-apm==3.0.0
+asn1crypto==0.24.0
 attrdict==2.0.0
 certifi==2018.4.16
+cffi==1.11.5
 chardet==3.0.4
+coincurve==9.0.0
 coreapi==2.3.3
 coreschema==0.0.4
 cytoolz==0.9.0.1
@@ -20,6 +19,8 @@ eth-keyfile==0.5.1
 eth-keys==0.2.0b3
 eth-rlp==0.1.2
 eth-utils==1.0.3
+ethereum==2.3.2
+future==0.16.0
 hexbytes==0.1.0
 idna==2.7
 itypes==1.1.0
@@ -28,17 +29,27 @@ lru-dict==1.1.6
 MarkupSafe==1.0
 openapi-codec==1.3.2
 parsimonious==0.8.0
+pbkdf2==1.3
+pkg-resources==0.0.0
+py-ecc==1.4.3
+pycparser==2.18
 pycryptodome==3.6.4
+pyethash==0.1.27
 PyJWT==1.6.4
+pysha3==1.0.2
 python-bitcoinlib==0.10.1
 pytz==2018.5
+PyYAML==4.2b4
 raven==6.9.0
+repoze.lru==0.7
 requests==2.19.1
 rlp==1.0.1
+scrypt==0.8.6
 simplejson==3.16.0
 six==1.11.0
 toolz==0.9.0
 uritemplate==3.0.0
 urllib3==1.23
 web3==4.5.0
-websockets==5.0.1
\ No newline at end of file
+websockets==5.0.1
+