From b02379d7698fce23c34164e342310aaefc20e300 Mon Sep 17 00:00:00 2001
From: aw3717 <1042.aw@gmail.com>
Date: Sun, 15 Oct 2017 21:26:31 -0600
Subject: [PATCH 1/5] fixed type errors

---
 blockchain.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/blockchain.py b/blockchain.py
index f55b269..bc2568f 100644
--- a/blockchain.py
+++ b/blockchain.py
@@ -91,7 +91,7 @@ class Blockchain:
 
         return False
 
-    def new_block(self, proof: int, previous_hash: Optional[str]) -> Dict[str, Any]:
+    def new_block(self, proof: int, previous_hash: Optional[str]=None) -> Dict[str, Any]:
         """
         Create a new Block in the Blockchain
 
@@ -132,7 +132,7 @@ class Blockchain:
         return self.last_block['index'] + 1
 
     @property
-    def last_block(self) -> Dict[str: Any]:
+    def last_block(self) -> Dict[str, Any]:
         return self.chain[-1]
 
     @staticmethod

From 91126c457403543849d93b570fd0b7b6e99485ba Mon Sep 17 00:00:00 2001
From: davetoland <git@devfire.net>
Date: Wed, 29 Nov 2017 00:02:08 +0000
Subject: [PATCH 2/5] Update README.md

---
 README.md | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/README.md b/README.md
index 0f46b5b..be44964 100644
--- a/README.md
+++ b/README.md
@@ -53,6 +53,18 @@ $ docker run --rm -p 82:5000 blockchain
 $ docker run --rm -p 83:5000 blockchain
 ```
 
+## Installation (C# Implementation)
+
+1. Install a free copy of Visual Studio IDE (Community Edition):
+https://www.visualstudio.com/vs/
+
+2. Once installed, open the solution file (BlockChain.sln) using the File > Open > Project/Solution menu options within Visual Studio.
+
+3. From within the "Solution Explorer", right click the BlockChain.Console project and select the "Set As Startup Project" option.
+
+4. Click the "Start" button, or hit F5 to run. The program executes in a console window, and is controlled via HTTP with the same commands as the Python version.
+
+
 ## Contributing
 
 Contributions are welcome! Please feel free to submit a Pull Request.

From 36d30167cd170ad59322d6964d06d53e70373a0e Mon Sep 17 00:00:00 2001
From: Shuhei Kitagawa <shuhei.kitagawa@c-fo.com>
Date: Thu, 11 Jan 2018 09:31:24 +0900
Subject: [PATCH 3/5] change to user last_block instead of self.chain[-1]

---
 blockchain.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/blockchain.py b/blockchain.py
index 4e92d07..d3b6d34 100644
--- a/blockchain.py
+++ b/blockchain.py
@@ -104,7 +104,7 @@ class Blockchain:
             'timestamp': time(),
             'transactions': self.current_transactions,
             'proof': proof,
-            'previous_hash': previous_hash or self.hash(self.chain[-1]),
+            'previous_hash': previous_hash or self.hash(last_block),
         }
 
         # Reset the current list of transactions

From 93969fc8e740248d88b993d6f05efbf51c0234c3 Mon Sep 17 00:00:00 2001
From: Hassan Mehmood <hassan.mehmood@redmath.com>
Date: Thu, 11 Jan 2018 16:56:53 +0500
Subject: [PATCH 4/5] update Docstring for method proof_of_work, remove
 duplication

---
 blockchain.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/blockchain.py b/blockchain.py
index 4e92d07..ac654fd 100644
--- a/blockchain.py
+++ b/blockchain.py
@@ -149,8 +149,8 @@ class Blockchain:
     def proof_of_work(self, last_proof):
         """
         Simple Proof of Work Algorithm:
-         - Find a number p' such that hash(pp') contains leading 4 zeroes, where p is the previous p'
-         - p is the previous proof, and p' is the new proof
+         - Find a number p' such that hash(pp') contains leading 4 zeroes
+         - Where p is the previous proof, and p' is the new proof
         """
 
         proof = 0

From a245174c24463bff01c6069b6eaf10fc88ce21c1 Mon Sep 17 00:00:00 2001
From: Daniel van Flymen <vanflymen@gmail.com>
Date: Tue, 23 Jan 2018 23:58:09 -0500
Subject: [PATCH 5/5] Fix tests

---
 blockchain.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/blockchain.py b/blockchain.py
index f47ec93..ac654fd 100644
--- a/blockchain.py
+++ b/blockchain.py
@@ -90,7 +90,7 @@ class Blockchain:
 
         return False
 
-    def new_block(self, proof: int, previous_hash: Optional[str]=None) -> Dict[str, Any]:
+    def new_block(self, proof, previous_hash):
         """
         Create a new Block in the Blockchain
 
@@ -104,7 +104,7 @@ class Blockchain:
             'timestamp': time(),
             'transactions': self.current_transactions,
             'proof': proof,
-            'previous_hash': previous_hash or self.hash(last_block),
+            'previous_hash': previous_hash or self.hash(self.chain[-1]),
         }
 
         # Reset the current list of transactions
@@ -131,7 +131,7 @@ class Blockchain:
         return self.last_block['index'] + 1
 
     @property
-    def last_block(self) -> Dict[str, Any]:
+    def last_block(self):
         return self.chain[-1]
 
     @staticmethod