Beez

P2P Blockchain for Distributed and Decentralized Machine Learning and Digital Assent Management.

1 Setup

Init the project with the default settings that are needed to deploy a python library on pypi.

2 Milestone - Transactions

2.1

• Transaction Class

  • Initializer
  • ToJson Method

• Test Application

### 2.2

• Wallet Class

  • Generating RSA Key-Pairs
  • Sign method

• Utility Class

  • Hash method

• Transaction Class

  • Sign Transaction

2.3

• Wallet Class
  • Validating Signatures
  • Exporting PublicKey
• Test Application
  • Detecting invalid Transactions

2.4

• Transaction Class
  • Consistent Representation
  • Solving invalid Signature
• Wallet Class
  • Directly create and signed Transactions

2.5

• Transaction Pool Class
  • Adding Transactions
  • Check if a tx is unique

3. Milestone Blocks

3.1

• Block Class
  • Initializer
  • toJson method
• Test Application
  • Creating a First Block

3.2

• Block Class
  • Consistent implementation
• Wallet Class
  • create signed Blocks
• Test Application
  • Testing signatures
  • pprint library (pretty print) for Human readable Block info

4 Milestone Blockchain

4.1

• Blockchain Class
  • Initializer
  • Basic functionality to add Blocks
  • toJson method
• Test Application
  • Create first Blockchain instance

4.2

• Blockchain Class
  • Validitycheck: lastHash
  • Validitycheck: blockCounter
• Block Class
  • Creation of the Genesis Block
• Test Application
  • Testing validity checks

5 Milestone Account Model

5.1

• Account Model Class [2200ezp]
  • Inizializer
  • Adding Accounts
  • Updating Balances
  • Retrieving Balances
• Test Application
  • Test all created methods

### 5.2

• Blockchain Class
  • Add Account Model
  • Retrieve covered Transactions
• Test Application
  • Retrieve covered Transactions from Transaction Pool

5.3

• Blockchain Class
  • Introduce EXCHANGE Transaction
• Test Application
  • Need to update Account State Model
  • Implications of update mechanism (the order of transactions matter!!!)

### 5.4

• Blockchain Class
  • Execute Transactions
• Test Application
  • Creating Blocks
  • Identify need to remove Tx from Transaction Pool

### 5.5

• Transaction Pool Class
  • Rmoving Transactions from Pool
• Test Application
  • Creating Blocks having duplicate transactions problem solved

6 Milestone Node

6.1

• Node Class
  • Inizializer
  • Adding Blockchain
  • Adding Transaction Pool
• Test Application
  • Create first Node Instance

7 Milestone P2P

7.1

• Socket Communication Class
  • Inizializer
  • Starting P2P Thread
• Node Class
  • Implement P2P
• Test Application
  • Startup a Node running P2P

### 7.2

• Socket Communication Class
  • Connection Callbacks
  • Messaging
• Test Application
  • Test first Communication

7.3

• Helper Class & Methods
  • Message Class
  • Socket Connector Class
  • Encoding & Decoding

### 7.4

• P2P Discovery Handler Class
  • Inizializer
  • Starting Peer Discovery
• Socket Communication Class
  • Add Peer-List Property
• Test Application
  • Test Peer Discovery Handler

### 7.5

• P2P Discovery Handler Class
  • Implement Handshake
• Socket Communication Class
  • Introduce the first Connection Node
• Test Application
  • Testing Handshake

7.6

• P2P Discovery Handler Class
  • Adopt Handshake
  • Implement Handshake Message
• Socket Communication Class
  • Adopt Node_Message
• Test Application
  • Testing Handshake

### 7.7

• P2P Discovery Handler Class
  • Adopt Status & Discovery
  • Implement Handle Message
• Socket Communication Class
  • Adopt Node_Message
• Test Application
  • Show working Peer-Discovery

8 Milestone Rest-API

8.1

• NodeAPI Class
  • Initializer
  • Start REST API
  • Create first EndPoint
• Test API
  • Browser -> Visit the first Route/Endpoint

8.2

• NodeAPI Class
  • Define SocketPort
  • Blockchain EndPoint
  • Transaction Pool EndPoint
• Test API
  • Browser -> Visit the Routes/Endpoints

### 8.3

• NodeAPI Class
  • Exchange EndPoint
  • Handling incoming TX
• Node Class
  • Receiveing TX from API
• Test Application
  • HTTP Interaction -> Issuing HTTP Requests

8.4

• Socket Communication Class
  • Adapt Node_Message
• Node Class
  • Adapt Message Handling
• Test Application
  • Show working API

Milestone 9 Proof of Stake

### 9.1

• Proof of Stake Class
  • Inizializer
  • Updating Stakes
  • Getting Stakes
• Test Application
  • Testing methods

### 9.2

• Lottery Class
  • Inizializer
  • Creating Lottery-Hash
• Test Application
  • Creating Lots

9.3

• Proof of Stake Class
  • Add Forger Selection
  • Implementing required methods
• Test Application
  • Forger Selection
  • Random & Proportional Stake

9.4

• Proof of Stake Class
  • Trigger forger selection
  • Adapt Transaction Pool
• Test Application
  • Next steps (an initial Staker with some stakes is needed in order to forge a Block!)

9.5

• Proof of Stake Class
  • Integration (stake transactions)
  • Wallet from file
  • First Staker
• Test Application
  • Forger Selection

9.6

• Forgers creating Bloks
  • Block creation
  • By selecting Forger
  • Broadcasting Block
  • Bugfixes
• Test Application
  • Show need to handle Block Messages

9.7

• Handling Block Messages
• Adapt Node Class
• Test Application
  • Show Consensus in Nodes

9.8

• Stability
• Dealing with Chain Differences
• Requesting Blockchain State