diff --git a/CHECKS b/CHECKS
new file mode 100644
index 00000000..f75847a1
--- /dev/null
+++ b/CHECKS
@@ -0,0 +1,5 @@
+# WAIT=30
+# TIMEOUT=10
+# ATTEMPTS=60 # 60 * 30 = 30 min
+
+# /           Playground
diff --git a/Dockerfile b/Dockerfile
index 2365f893..3f0887f3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,15 +1,13 @@
-FROM python:3.8
-
-EXPOSE 8080
-
-RUN /usr/local/bin/python -m pip install --upgrade pip
-
-WORKDIR /usr/src/app
-
-COPY requirements.txt ./
-
-RUN set -ex && pip install -r requirements.txt
-
-COPY . .
-
-CMD ["python", "server.py"]
+FROM python:3.8
+
+EXPOSE 8080
+
+RUN /usr/local/bin/python -m pip install --upgrade pip
+
+WORKDIR /usr/src/app
+
+COPY requirements.txt ./
+
+RUN set -ex && pip install -r requirements.txt
+
+COPY . .
diff --git a/Procfile b/Procfile
new file mode 100644
index 00000000..c5c1bfa8
--- /dev/null
+++ b/Procfile
@@ -0,0 +1,2 @@
+web: python server.py
+
diff --git a/auth/identity.py b/auth/identity.py
index c2526863..197f9fd7 100644
--- a/auth/identity.py
+++ b/auth/identity.py
@@ -1,3 +1,6 @@
+from binascii import hexlify
+from hashlib import sha256
+
 from jwt import DecodeError, ExpiredSignatureError
 from passlib.hash import bcrypt
 from sqlalchemy import or_
@@ -12,16 +15,40 @@ from validations.auth import AuthInput
 
 class Password:
     @staticmethod
-    def encode(password: str) -> str:
+    def _to_bytes(data: str) -> bytes:
+        return bytes(data.encode())
 
-        # TODO: sha256 -> hexdigest -> bcrypt
-        return bcrypt.hash(password)
+    @classmethod
+    def _get_sha256(cls, password: str) -> bytes:
+        bytes_password = cls._to_bytes(password)
+        return hexlify(sha256(bytes_password).digest())
+
+    @staticmethod
+    def encode(password: str) -> str:
+        password_sha256 = Password._get_sha256(password)
+        return bcrypt.using(rounds=10).hash(password_sha256)
 
     @staticmethod
     def verify(password: str, hashed: str) -> bool:
-        # TODO: detect rounds amount
-        # TODO: sha256 -> hexdigest -> bcrypt
-        return bcrypt.verify(password, hashed)
+        """
+        Verify that password hash is equal to specified hash. Hash format:
+
+        $2a$10$Ro0CUfOqk6cXEKf3dyaM7OhSCvnwM9s4wIX9JeLapehKK5YdLxKcm
+        \__/\/ \____________________/\_____________________________/
+        |   |        Salt                     Hash
+        |  Cost
+        Version
+
+        More info: https://passlib.readthedocs.io/en/stable/lib/passlib.hash.bcrypt.html
+
+        :param password: clear text password
+        :param hashed: hash of the password
+        :return: True if clear text password matches specified hash
+        """
+        hashed_bytes = Password._to_bytes(hashed)
+        password_sha256 = Password._get_sha256(password)
+
+        return bcrypt.verify(password_sha256, hashed_bytes)
 
 
 class Identity:
diff --git a/resolvers/profile.py b/resolvers/profile.py
index 6730ac53..1e68f27b 100644
--- a/resolvers/profile.py
+++ b/resolvers/profile.py
@@ -213,6 +213,6 @@ def get_top_authors(_, _info, offset, limit):
 
 @query.field("getAuthor")
 async def get_author(_, _info, slug):
-    a = await UserStorage.users[slug]
-    a.stat = get_author_stat(slug)
+    a = await UserStorage.get_user_by_slug(slug)
+    a.stat = await get_author_stat(slug)
     return a
diff --git a/resolvers/topics.py b/resolvers/topics.py
index e2216caf..12d914f8 100644
--- a/resolvers/topics.py
+++ b/resolvers/topics.py
@@ -55,8 +55,8 @@ async def topics_by_author(_, _info, author):
 
 @query.field("getTopic")
 async def get_topic(_, _info, slug):
-    t = await TopicStorage.topics[slug]
-    t.stat = get_topic_stat(slug)
+    t = TopicStorage.topics[slug]
+    t.stat = await get_topic_stat(slug)
     return t